TW384313B - High strength steels having high impact energy absorption properties and a method for producing the same - Google Patents

Abstract

The present invention provides high strength steels having high impact energy absorption properties used for energy absorbing automotive components, such as front side members, and also provides a method for producing the same. The high strength steels having high impact energy absorption properties, according to the present invention, are the steels which have the microstructure of mixtures of ferrite and/or bainite with the third component including retained austenite of the volume fraction between 3% and 50%, with the dominating microstructural component of either ferrite or bainite, and the average flow stress sigma dyn (Mpa) between 3 and 10% of equivalent strain, should be greater than the value of 0.776 x TS + 250, where TS(Mpa) is the maximum flow stress obtained by static tensile test at 5x10<-4>~5x10<-3>(1/s) of strain rate before the pre-deformation, as well as the work hardening coefficient between 1~5% of strain greater than 0.080.

Description

A7 B7

Consumption of the central naked quasi-stationary worker of the Ministry of Economic Affairs of the People's Republic of China Du Duan IL 5. Description of the invention (The present invention relates to a high-strength hot-stamped panel with high dynamic deformation resistance, a cold-stamped panel, and a manufacturing method thereof. Because it can effectively absorb the impact energy at the time of collision, it can be used for automobile components to provide safety for vehicle occupants. In recent years, the protection of passengers during automobile collisions is considered to be the most important performance of automobiles. High-speed high-speed deformation resistance materials have become much anticipated. For example, when a passenger car crashes in the front, if this material is used in the so-called front end side frame of the frame, 'the impact energy can be absorbed by the material being crushed, And to mitigate the impact of this kind of impact on passengers. As the distortion speed of various parts of the car during collision can reach 103 (l / s), if the impact absorption energy of the material is considered, it must be clearly understood. If the anatomy is the resistance to dynamic deformation at high distortion speeds, it is also effective to consider how to save energy, reduce the emission of C02, and simultaneously achieve the goal of lightweight car weight. The need for high-strength steel plates is to increase β. For example, the inventors have suggested in the report of high-speed deformation characteristics and impact energy of high-strength steel plates made by CAMP-ISIJVol. 9 (1996) ρρ. 1112 to 1115. l03 (l / s) dynamic strength comparison in the field of high distortion speed l0_3 (i / s) static strength at low distortion speed can be greatly increased, and the deformation resistance can be changed by the structure of the reinforcing material Speed dependence, and TRIP (Metamorphically Induced Plasticity) steel and DP (Fat Grain Iron / Matian Loose Iron Duplex) type copper are more excellent in formability and impact absorption energy than other high-strength steel plates. For the high-strength steel sheet with residual Vostian iron and good impact resistance, and its manufacturing method, the paper XA sample rate T ^^ Ui () x297i: in ----- ----- cf, {Please read the “Notes on the back side before writing this page”) Order 'Μ Printed by the Central Standards Bureau of the Ministry of Economic Affairs Λ_Consumer Cooperative Cooperative A7 __B7_ V. Description of the invention (2) It will be affected by the disclosure Absorptive energy can only be solved by the rise of the falling stress caused by the accompanying increase in the deformation speed Section, but did not expressly order to enhance the impact absorption energy, in addition to the amount of residual austenite of how to control the characteristics of the residual austenite. If so, although the dynamic deformation characteristics of parts constituting materials that have impact energy absorption energy at the time of a car collision have been gradually explained, of course, for steel materials for automobile components with better impact energy absorption energy, attention should be paid to those The characteristics and selection of materials based on which standards have not yet been explained. Also, after the steel for automobile components is pressed and formed into the shape of the required component, it is usually painted, baked and assembled in the automobile to face the actual collision phenomenon. . However, it is not clear which steel should be used to strengthen the structure of the steel material after such pre-deformation + baking treatment to improve its impact energy absorption energy during impact. Therefore, the object of the present invention is to provide a High-strength steel plate showing high impact energy absorption and manufacturing method thereof. This high-strength steel plate is a steel material that can be processed into a component that can absorb the impact energy of the front side frame of a frame when a car crashes.爰 is the high-strength steel plate of the present invention which can display high impact energy absorption energy, namely: (1) the microscopic structure of the steel plate finally obtained contains fat iron and / or toughened iron, The main phase contains a volume fraction of 3 ~ 50% of the residual third-phase composite structure of Vostian Iron, and its equivalent distortion is 0% or more and 10% or less before it is deformed and then 5X102 ~ 5X103 (I / s) Distortion speed range 3 ~ 10% of equivalent distortion range equivalent deformation stress during deformation This paper size is applicable + National National Standard (CMS) A4 specification (210X297 mm) L—Il · ---- C Fly-mounted—— ( (Please read the note on the back before filling in this page)

* tT i / w -6-A7 __ ._B7_ V. Description of the invention (3) The value adyn (MPa) can meet the distortion speed of 5X10 · 4 ~ 5X 10.3 · (1 / s) before applying the pre-deformation. The maximum stress TS (MPa) in the static tensile test measured by the standard surface is expressed by the formula adyn20.766XTS + 250, and its work hardening index of distortion of 1 to 5% can meet the high strength steel plate with high dynamic deformation resistance above 0.080. Also, (2) The above-mentioned (1) work hardening index with a drop strength X distortion of 1 to 5% can more satisfy a high-strength steel plate with a high dynamic deformation resistance of more than 40. Also, (3) The microscopic structure of the finally obtained steel sheet contains ferrous iron and / or toughened iron, which is a kind of steel containing any one of the main phases and containing 3 to 50% of the residual Vostian iron. The 3rd phase compound structure, and its equivalent distortion is 0% to 10%, and then it is deformed first and then deformed at 5X102 ~ 5X 103 (Ι / s). The average value of deformation stress in the scope of the Ministry of Economic Affairs, Central Bureau of Standards, W? Industrial Consumption Cooperation, Du Yinxian (please read the note on the back, and then fill out this page) -crdyWMPa), which can be satisfied before it is applied to the first deformation. 5x10-3 (1 / s) distortion stress range measured in the state of maximum stress TS (MPa) expressed by the formula σ dyn 2 0.766 X TS + 250, and the above residual Vostian iron t solid solution [C] The average Mn of steel is equal to the value determined by {Mn eq = Mn + (Ni + Cr + Cu + Mo) / 2} (M) M = 678 —428 X [C] —33 Mn eq is 70 or more and 250 or less. It can also satisfy the difference between the residual Vostian iron scoring ratio before the pre-deformation and the residual Vostian iron volume fraction after the equivalent distortion of 5% after the pre-deformation is the residual Tian Tiehuan's integral rate is above 3%, and the work hardening index of distortion of 1 ~ 5% is above 0.080, and the above-mentioned residues. The average crystal grain size of Resota Tin is 5 or less, and the average crystals of the above-mentioned residual Vosda Iron The ratio of the particle size to the size of the main paper is applicable to the Chinese National Standard (CNS) M specification (210X297 mm) 7. A7 B7 V. Description of the invention (4) Average grain size of ferrous iron or toughened iron in the phase It is 0.6 or less, and the average particle size of the main phase is 10 # m or less, preferably 6 / zm or less, and the Asta scattered iron «integration rate is 3 to 30%, and the average crystal grain size of the Asada loose iron is 10 / zm or less. It is preferably 5 or less, the integral rate of the ferrite grain iron is 40% or more, and the drop ratio is 85% or less. The value of the tensile strength X total elongation is 20,000 or more. Any of the high strengths with high dynamic deformation resistance. Steel plate. Also, (4) Contains C: 0.03% or more and 0.3% or less by weight, and one or both of Si1 and A1 total 0.5% or more and 3.0% or less, and it contains He 11, 1 ^, (: 1 'as required) One or two of 0,11,1 ^ 〇, totaling 0.5% to 3.5%, and the rest are high-strength steel plates with Fe as the main component, or the high-strength steel plates may further contain 1 ^, 1 'as required. One, two or more of 丨, 3,?, 8, € 3, 1 ^ 1 ^, where one or two or more of Nb, Ti, and V total 0.3% or less, P is 0.3% or less, and B is 0.01% Below, Ca is 0.0005% or more and 0.01% or less, REM: 0.005% or more and 0.05% or less, and the rest are Fe-based high-strength steel plates with high dynamic deformation resistance. (Please read the note $ on the back side before filling this page) (5) The manufacturing method of the high-strength hot-rolled steel sheet with high dynamic deformation resistance according to the present invention is a continuous method having the composition shown in (4) above. Flat steel blanks are cast and sent directly to the hot-rolling project as they are, or hot-rolled after cooling and heating, that is, Ar3 — 50aC ~ Ar3 + 120 ° C plus The hot rolling is completed at a temperature, and the hot rolling is followed by an average cooling rate of 5 t / sec or more in the cooling process. &Quot; ------v After cooling, the hot rolled steel sheet is wound at a temperature of 500 t or less. The microscopic structure of hot-rolled steel sheet contains ferrous iron and / or toughened iron. It is a kind of main phase and contains 3 ~ 50% residual Voss by volume fraction. This paper applies Chinese national standards (CNS). A4 specification (210X297 mm) Printed by the Central Ministry of Economic Affairs of the Central Bureau of Work, Consumer Cooperatives A7 B7 V. Description of the invention (5) Tiantie's third-phase composite organization, and its equivalent distortion is 0% to 10% The average deformation stress σ dyn (1 ^? 3) of 3 to 10% of the equivalent distortion range when deforming at the deformation speed range of 5X102 ~ 5X103 (l / s) after the first deformation can satisfy the pre-deformation The expression adyn2 0.766XTS + 250 expressed in the maximum tensile stress TS (MPa) of the static tensile test measured in the range of distortion speed range of 5 fathers 10-4 to 5 fathers 10-3 (1/3), and its distortion 1 ~ A work hardening index of 5% can meet the manufacturing method of high-strength hot-rolled steel plates with high dynamic deformation resistance above 0.080. Also, ( 6) When the hot rolling processing temperature of (5) above is Ar3-50 ° C ~ Ar3 + 120 ° C, the metal parameters are carried out: A can meet the following hot rolling formulas (1) and (2) And the average cooling rate of the outflow table is set to 5 ° C / sec or more, and the above-mentioned metal parameter: the relationship between A and the winding temperature (CT) can satisfy the condition of formula (3), and the winding has high dynamics Method for manufacturing high-strength hot-rolled steel sheet with resistance to deformation "9 ^ 1ogA ^ 18 (1) △ T221XlogA- 178 (2) CTS6XlogA + 312 ........ (3) (7) Furthermore, the invention has high A method for manufacturing a high-strength cold-rolled steel sheet resistant to dynamic deformation is to continuously cast a flat steel blank having the composition shown in the above (4), and directly send it to the hot-rolling project as it is, or after hot-rolling after cooling and heating, and The hot-rolled steel sheet coiled after hot rolling is subjected to pickling and cold rolling. When the final product is annealed by continuous annealing process, the temperature is below IX (Ac3 —Ac 丨) + Ac / C above Ac3 + 50 ° C After annealing for 10 seconds to 3 minutes, it is cooled to 550 ~ 700 ° C at a cooling rate of 1 ~ 10 ° C / s. The paper size is applicable to Chinese National Standard (CNS) A4. Specifications (210X297 mm) L -------- ci ------ tr ----- Q (Please read the note f on the back before filling in this page) -9-Central Ministry of Economic Affairs橾 Associate Bureau w; Industrial and Consumer Cooperatives Printed Oxygen A7 B7 V. Invention Description (6) The primary cooling stop temperature 'Yan' is followed by a secondary cooling rate of 10 ~ 20 ° C / sec to cool to 15 ~ 450 &lt; After the secondary cooling stop temperature, the fan garden was kept at a temperature of 150 to 500 ° C for 15 to 20 minutes and then cooled to room temperature, and the cooling condition after annealing was 0 ° &gt; &lt; ( Ac3-Ac D + Ac, above ° C, above Ac3 + below 50 ° C, annealing for 10 seconds to 3 minutes, and then cooling to a secondary cooling rate of 550 ~ 720 ° C at a cooling rate of 1 ~ 10eC / sec. Start temperature Tq, and then cool at a secondary cooling rate of ~ 200 ° C / s to a temperature Tem determined by the steel composition and annealing temperature To — the secondary cooling end temperature above 100t and below Tem! ^ After that, Toa is maintained at a temperature above Te-50 ° C and below 500 ° C for 15 seconds to 20 minutes and then cooled to room temperature. The microscopic structure of the cold-rolled steel plate finally obtained contains ferrous iron and / Or toughened iron is a structure in which any one of the main phases is combined with the third phase containing 3 ~ 50% residual Vostian iron, and its equivalent distortion is 0% to 10%. Deformed first and then within 3 to 10% of the equivalent distortion range when deformed at a distortion speed range of 5X 102 to 5X103 (1 / s). The average deformation stress σ dyn (MPa) can meet the requirements of its application. The formula (Tdyn20.766XTS + 250, and its monumental change 1 ~) expressed in the maximum stress TS (MPa) of the static tensile test measured in the range of distortion speed of 5X 1〇'4 to 5 father 10 (1/3) before deformation. A 5% work hardening index can meet the manufacturing method of high-strength cold-rolled steel plates with high dynamic deformation resistance above 0.080. Brief description of the circle The first circle is 5X 102 ~ 5 X l 〇3 (i / s) distortion speed range deformation of 3 to 10% equivalent distortion range of the average deformation stress (jdyn-TS and TS relationship diagram; This paper uses China National Standard (CNS) A4 size (210X297 mm) (please read Note f on the back before filling in this 3f) • Binding and ordering A7 B7 Printed by the Central Government Bureau of the Ministry of Economic Affairs 5. Description of the invention (Figure 2 shows the relationship between the deformation hardening index of the steel plate 1 ~ 5% and the dynamic energy absorption (J); the third circle shows the yield strength X distortion of the steel plate 1 ~ 5% work hardening index A diagram showing the relationship with the dynamic energy absorption (J); Figure 4a is a schematic diagram of the impact crush test member (cap type) for measuring the dynamic energy absorption in Figure 3; Figure 4b is a test piece surface used in Section 4aJ0 Fig. 4c is a model circle of the impact crush test method; 为本 5 is the △! Of the hot rolling process of the present invention: the relationship between the metal parameter A and the circle; The relationship between the temperature and the metal parameter A is displayed. Figure 7 is a graph showing the annealing cycle of the continuous annealing process of the present invention. Figure 8 is the secondary cooling stop temperature (Te) of the continuous annealing process of the present invention and maintained thereafter. Relationship between temperature (Toa). The impact absorbing member at the front end of the frame, such as the impact absorbing member, is made by bending and forging the steel plate. The impact during the collision of the car is such that it is processed and baked before being applied. Therefore, steel plates with high impact energy absorption are still required after processing and baking of such components. The inventors have studied the results of impact absorbing components that can meet the above requirements for many years, and understand the actual components such as steel plates that are formed and processed. When it contains an appropriate amount of residual Vostian iron, it is more suitable for high strength with excellent impact absorption characteristics. The paper size is applicable to China Standards (CNS) A4 (210X297 mm) l · --- ^ ----- 07 ^ .------ 1T ----- (Please read the note on the back before filling in this page) 11 Printed A7 B7 printed by the Consumers Cooperative of the Central Bureau of the Ministry of Economic Affairs V. Invention Description (8 ) Steel plate. That is, the most suitable micro-vision tissue is found to contain ferrous iron and / or toughened iron that are easily solidified and strengthened by various replacement elements, and any of them is the main phase and contains 3 to 50% by volume. In the deformation, the residual phase 3 of the hard Asada loose iron, Wastfield iron, has a high dynamic deformation resistance when the third phase has a composite structure. It was also determined that the third phase of the early micro-vision structure is a composite structure containing Asada loose iron, and when a certain condition can be satisfied, a high-strength copper plate with high dynamic deformation resistance can be obtained. Then, the inventors conducted experiments and review results based on the above-mentioned cognition, and found that the shock-absorbing member such as the front end side frame of the frame is equivalent to the pre-deformation amount of the forming process, and sometimes it may reach The maximum is more than 20%, but the equivalent distortion is greater than 0% and less than 10%. Therefore, by grasping the effect of pre-deformation in this range, the behavior of the entire member after pre-deformation can be estimated. Therefore, in the present invention, the equivalent distortion of 0% to 10% is selected as the pre-deformation amount given when the component is processed. Figure 1 shows the mean value of the deformation stress of the shock energy absorbed energy index of the present invention at the time of 5 × 102 ~ 5 × 103 (l / s) distortion rate. The equivalent deformation stress range of the 3 ~ 10% equivalent distortion range during deformation is dyn Raw material strength (TS) {This is the relationship between the maximum stress TS (MPa) in the static tensile test measured in the range of 5X10 · 4 ~ 5X10_3 (1 / s) distortion speed. The shock absorbing member of the front end side frame of the frame has a hat-shaped cross-sectional shape. According to the analysis by the inventors, the deformation results of these members when they are crushed by high-speed impact are found to have reached a maximum distortion of 40% or more, but More than 70% of the total absorbed energy is absorbed by less than 10% of the high-speed stress-distortion diagram. Therefore, the dynamic deformation resistance during high-speed deformation below 10% is used as the paper size. This paper is applicable to China National Standards (CNS) A4—Specifications (2 丨 0X297 mm)-(Please read the precautions on the back before filling this page. )

, 1T -12-A 7 __; _ B7_ V. Description of the invention (9) It is the energy absorption index of high-speed impact energy. In particular, since the variable is most important in the range of 3 to 10%, the average stress in the range of equivalent distortion of 3 to 10% when deforming in the high speed tensile deformation range of 5X102 to 5 X103 (Ι / s) distortion speed is taken as 7dyn. Indicators of energy absorption of impact energy》 Printed by the Central Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives (please read the note f on the back, and then fill out this page). The average stress of 3 to 10% during high-speed deformation, adyn, usually follows The static tensile strength of the steel before the pre-deformation and baking treatment {5X10 · 4 ~ 5Xl (T3 (l / s) distortion speed range measured in the maximum tensile static stress test: TS (MPa)} increases and increases "therefore Increasing the static tensile strength of the steel (the static raw material strength has the same meaning) can directly promote the component to increase the impact energy absorption energy. However, the higher the strength of the steel, the more the moldability of the component is deteriorated, making it more difficult to obtain the required component shape. #Steel with the same tensile strength (TS) 8 ^ 乂 High crdyn is more suitable. Due to this relationship, the steel is deformed after 0% to 10% and then deformed in the range of 5X102 ~ 5X103 (1 / s). 3 ~ 10% of equivalent distortion range during deformation The average deformation stress ordyn, if it can meet the maximum stress TS (MPa) expressed in the static tensile test measured at 5X 10 · 4 ~ 5X 10_3 (l / s) distortion speed before the prior deformation is applied. -TS2-0.234xTS + 250, the impact energy absorption energy of actual components is higher than other steels, and it is not necessary to increase the total weight of the component to increase the impact energy absorption energy, but it can be provided with high dynamic deformation resistance High-strength steel plate. Also, the above-mentioned relation cr dyn — Ding 8 2-0.234 Father Ding 8 + 250 and (7 4 Ya 112 0.766 Father Ding 8 + 250 are equal compensation, the following is calculated using the formula of £ 7dyn20.766XTS + 250 Note: Secondly, the inventors also found that in order to improve the safety of impact resistance, it is possible to increase the processing hard paper size when the pre-processing is indicated by the distortion 1 to 5% work hardening index. ) A4 size (210X297mm) -13-A7 B7 Printed by the Ministry of Economic Affairs, China Food and Beverage Bureau, Shellfisher Consumer Cooperative, Co., Ltd. 5. Description of the invention (10) To increase the initial deformation resistance at the beginning of the collision, it is necessary to borrow f The existence of metamorphic Asada scattered iron in the present deformation North breakage and improvement in high impact deformation (Tdyn. That is, as described above, the microscopic structure of the steel is controlled, as shown in the second and third laps, it is best to use copper's work hardening index of 0.080 or more 0.108 or more, and the work hardening finger color that reduces its drop strength X distortion is 40 or more, preferably 54 or more, and improve the impact safety mentioned above. "The impact safety of automotive components refers to the dynamic energy absorption and steel plate processing." Observe the relationship between the chemical index and the yield strength X work hardening index. It can be seen that if these values are increased, the dynamic energy absorption can be increased. Therefore, for the crash safety index of automotive components, if the yield strength is the same, Work hardening index, if the drop strength is different, ρ copper plate drop strength X work hardening index, respectively evaluated and considered to be appropriate β dynamic energy absorption is based on the impact crush test shown in Figures 4a, 4b and c It was obtained as follows. That is, after forming the steel plate into a test piece shape (angle fSR = 5 mm) as shown in Fig. 4b, spot welding with a current of 0.9 times the dust hail current with an electrode having a tip diameter of 5.5 mm was performed at 35 mm intervals. 3 After forming a component (hat-shaped model) with a test piece 2 on the two ceilings 1 as shown in Fig. 4a, and baking and coating at 170 ° C for 20 minutes, then approximately as shown in Fig. 4c The 15Kg drop weight 4 was dropped from a height of 10m, and the component placed on the seat 5 with the shock absorber 6 was crushed in the longer direction, and the change in area from the load displacement coil at that time was calculated. The deformation workload of bit = 0 ~ 150mm is taken as the dynamic energy absorption. The work hardening index of the distortion of the steel plate is 1 to 5%, and the work hardening index of the yield strength X distortion of 1 to 5% is obtained from the following. That is, add the steel plate (CNS) Α4Λ #-(210X297 ^) IJ ---? ---------- 1T ------ ο (please read the note $ on the back before filling (This page) 14-

V. Description of the invention (u) The test piece is JIS-5 (punctuation distance 50mra, parallel width 25mm), and the tensile test is performed at a distortion speed of 0_001 / S, and the yield strength and work hardening index (distortion 1 ~ 5% of n). The microstructure of the steel of the present invention will be described below. If there is an appropriate residual Vostian iron in the steel, the deformation will be abnormal when it is deformed (formed), so it can improve the work hardening index and inhibit necking to improve formability. The above-mentioned appropriate amount of residual Vostian iron is preferably 3% to 50%. That is, if the hip integral rate of the residual Vostian iron is less than 3%, the post-forming bottle parts cannot exhibit their work-hardening performance when they are subjected to impact deformation. The deformation load is stopped at a low level and the deformation workload is reduced, and The dynamic energy absorption is lower so that a higher tensile strength X total elongation cannot be obtained. In addition, if the volume fraction of the residual Vostian iron exceeds 50%, a slight deformation of the forming process will cause the abnormal deformation of the Asada iron caused by flail processing, and it is impossible to expect an increase in the tensile strength X total elongation rate. Significantly hardening during punching causes deterioration of the diameter expansion ratio, and even if the forming of the component can be performed barely, the excellent processing hard performance cannot be exerted when the formed component is subjected to colliding and colliding deformation. Therefore, the above-mentioned residual Vostian iron should be determined from this viewpoint. The amount. Also 'except for the above condition of «integration rate of 3% to 50% of the residual Vostian iron', the average crystal grain size of the residual Vostian iron is preferably the following, preferably 3 to m, which is also a better condition_ . Because, if the residual Vosstian iron's integral rate is 3 ~ 50%, but if its average crystal grain size exceeds 5, the residual Vosstian iron in the surface cannot be dispersed and fine, resulting in The upward action of the characteristic is only local and not appropriate. Also use this paper as a CNS ... (2 丨 mm)-one (read the notes on the back and then fill out this page) Order 6 Printed by the Central Ministry of Economic Affairs 印 Printed by the employee consumer cooperatives -15 -Shellfish consumer cooperation of the Central Rubbing Bureau of the Ministry of Economic Affairs, Du Yinyu A7 _ B7 _; _ 5. Description of the invention (12), the average crystal grain size of the above-mentioned residual Vostian iron is the average of the main phase fertilized iron or altered iron When the particle size ratio is 0.6 to 7 and the average crystal grain size of the main phase is 10 or less, and the microscopic structure is 6 # or less, it has the best impact safety and formability. The inventors have found that at the same level of tensile strength (TS: MPa), the average stress adyn in the above equivalent distortion range of 3 to 10% is based on the amount of solid dissolved carbon in the residual Vostian iron contained in the iron plate before the component is processed. {Expressed as [C] (weight%)} The average Mη of the steel material is changed by the same amount (Mn eq) Mn eq = Mn + (Ni + Cr + Cu + Mo) / 2. The carbon concentration in the residual Vosstian iron can be obtained by X-ray analysis and shifting spectroscopy. For example, by using X-ray analysis using κα line of Mo, using the (200) plane and (211) plane of the ferrous grain iron. The integrated reflection intensity of the (200) plane, (220) plane, and (311) plane of Vostian Iron was calculated by the method shown in the Journal of The Iron and Steel Institute, 206 (1968), p60. The experimental results conducted in this #mingren et al. Also found that if it is the solid solution carbon content [C] in the obtained residual Vostian iron, the value calculated from the Mn eq obtained from the replacement alloy element added to the steel M is M = 678 -428 X [C] -33XMn eq is 70 or more and 250 or less, and the residual Vostian iron hip integral rate (V0) before the first deformation is applied to the residual Vostian after the first deformation at an equivalent distortion of 5%. Difference in iron volume fraction (V5): {(V ())-(VS)} is more than 30% of the integral rate of the residual Vostian iron ship before the previous deformation, the cones have the same static tensile strength but more Can display larger adyn. At this time, such as M &gt; 250, the strength improvement effect caused by the deformation of the residual Vosstian iron in deformation is limited to the very low distortion range, so that almost all of the residual Vosstian iron is wasted when the component is deformed in advance. For the standard of this paper, the Chinese National Standard (CNS) Α4 specification (210X297 mm) L ——.---- oi ------ 1T --------- Q (Jing Xianwen Read the note on the back of the page and fill in this page] A7 _ ._ B7 _ V. Description of the invention (13) The crdyn can not have any effect when the high-speed deformation is improved, so the upper limit of 25 is &amp; If it is less than 70, although the residual Vastian iron metamorphism continues during the deformation process, it does not produce sufficient metamorphosis in the low distortion range 'to the equivalent distortion of 3 to 10% Fanyuan's average stress adyn still remains in the face Low degree, and the static tensile strength TS cannot satisfy the relationship (7dyn20.766xTS + 250), so the lower limit of μ is limited to 70. Also, regarding the location of the residual Vostian iron, the soft target teaches iron when deformed as The main recipient of distortion is that it is difficult to receive β-change after leaving the residual T (Wotian Iron) that is not iron. As a result, the deformation at the level of 1 to 5% is difficult to metamorphose, and its effect is weakened by loose iron in Asada. Therefore, it is appropriate to connect the residual Vostian iron to the fertile iron. Therefore, the integral rate of ferrite iron should be 40. % Or more is preferably 60% or more. And its average crystal grain size (flat 'equal circle diameter) is preferably 10 / zm or less, preferably the following. As the above-mentioned fertilized iron constitutes the softest structure in the knitting structure, t , Is an important factor that determines the work hardening index and the yield ratio of the yield strength X distortion of 1 to 5%, so it is better to control the value within the above specified value of the integral rate. In addition, the integral rate of the ferrous grain iron is increased and Fine graining can increase the carbon fertility of the unaltered Vosstian iron and finely disperse it. It effectively acts on the Asa loose iron and residual tissue produced by the unorthodox Vostian iron to refine the residual Vosstian iron's share. The air factor is increased. Refined, it is helpful to improve the crash safety and formability. Secondly, it should be 3% ~ 30% by volume and its average knot. The average equal circle diameter) is 10 or less, preferably 6 # m or less. The generation of movable dislocations of granular iron contributes to the reduction of the reduction ratio and the improvement of the work hardening index, and meets the above-mentioned normative values. The paper size is applicable to the Chinese national standard (CT ^) A4 (210X 297 mm) I --- V ---- 0 ^! F Xu first read the note far on the back and then fill out this page)-Order * Printed by the Central Laboratories Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives 17 A7 B7 Amendment V. Description of Invention (14 ) (Please read the note on the back before filling in this page) The impact safety and formability can be improved to achieve a better level of characteristics. Descent strength X distortion 1 ~ 5% work hardening index 2 54 and The step-down ratio S is 85%. The relationship between the volume fraction and average crystal grain size of the Asada loose iron is that too small a volume fraction and too large an average crystal grain size will cause its effect to be limited to local influences, making it impossible to achieve the above characteristics. In addition, regarding the existence of the above-mentioned Asada loose iron, if the Asada loose iron is not adjacent to the fat iron, the movable dislocation of the Asada loose iron is not easy to cause the effect of the thin iron to be thin. It is better to be connected with fertilizer and iron. ”The printed material of the Shellfish Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is here to explain the chemical composition of the above-mentioned microstructure and high-strength steel plates that have various characteristics and their content specification values. The high-strength steel sheet used in the present invention contains 0: 0.03% to 0.3% by weight, 0.5% to 3.0% of one or both of 8 丨 and 81, and Mn, Ni, Cr, Cu, and Mo as required. One or two or more of them are 0.5% to 3.5% in total, and the residual is mainly composed of Fe. Or the high-strength steel sheet further contains one or two or more of Nb, Ti, V, P, B, Ca, and REM as required, that is, one or two or more of Nb, Ti'V, or 0.3% or less and P 0.3% or less in total , B 0.01% or less, Ca 0.0005% or more and 0.01% or less, REM 0.005 or more and 0.05% or less, and the remaining high strength steel sheet with high dynamic deformation resistance mainly composed of Fe. The following is a detailed description of these chemical components and their contents (both by weight). C: C is the cheapest element that contributes to the stabilization of Vosstian iron at room temperature and is the most important element of the present invention. The average C content of steel not only affects the integral rate of residual Vosstian iron that can be ensured at room temperature, but also can be enhanced by concentrating it in the undistorted Vosstian iron during the manufacturing process. Stability during iron processing 18 This paper size is in accordance with China National Standard (CNS) A4 (210X297 mm). Printed by A7 B7, Shellfish Consumer Cooperative, Central Bureau of the Ministry of Economic Affairs. 5. Description of invention (15). However, when the amount of added Dong is less than 0.03%, the residual Vostian iron cannot be guaranteed to be more than 3%, so 0.03% is the lower limit. In addition, as the average C content of steel increases, the residual Vostian iron can be ensured.之 The increase of the integral rate can ensure the stability of the residual Vostian Iron while ensuring the Vostian Iron Skeleton integral rate. For example, when the C content of steel is too high, it will increase the strength of the steel by more than necessary, which will not only hinder the formability of forging and processing, but also increase the dynamic stress more than the increase in static strength. Deterioration restricts the use of steel for components, so the upper limit is 0.3% "

Si, A1: Si and A1 are the stabilizing elements of ferrous grain iron, and have the effect of increasing the processing rate of copper by increasing the integral rate of fat grain iron skeleton. In addition, both Si and A1 can suppress the production of Xueming carbon iron, and effectively condense C in Vosstian iron. Therefore, it is an indispensable addition for the retention of Vostian iron with an appropriate rate of integration at room temperature. element. This kind of additive element that can inhibit the production of Xueming carbon iron can be used besides Si and Al? The same effect can be expected with 〇11, Cr, Mo, etc. if these elements are added in an appropriate amount. However, when one or both of Siyu A1 is less than 0.5% in total, the inhibitory effect of Xueming carbon iron is not sufficient, and most of the C added for the stabilization of Vostian Iron are all carbides. The form is wasted, so that the volume fraction of the residual Vosstian iron required by the present invention cannot be ensured, or the manufacturing conditions required to ensure the residual Vosstian iron are not suitable for mass production engineering conditions, so the lower limit is 0.5% or less. When the total of one or both of Si and A1 exceeds 3.0%, it will provoke the fertilized iron or toughened iron that is the parent phase to harden or brittle, which will not only prevent the deformation rate from increasing to increase the deformation resistance, but also cause steel processing. Reduced toughness, reduced toughness, and even increased steel costs, and surface treatment characteristics such as chemical treatment are also significantly degraded. This paper size is applicable to China National Standard (CNS) A4 specification (210 × 297 mm)! -I-^ ------ ---- 1T ——---- ο (谙 Read the precautions on the back before filling out this page) 19 Printed by the Central Ministry of Economic Affairs Bureau Consumers Cooperatives A7 B7 V. Invention Description (16), so The upper limit is 3.0%. When the surface properties are required to be particularly superior, consideration must be given to avoid the generation of Si scale, or vice versa to make Sig 1,0% in order to fully produce the Si scale to avoid its strong eyes.

Mn, Ni, Cr, Cu, Mo: Mn, Ni, Cr, Cu, and Mo are all Vostfield iron stabilizers' are elements that stabilize Vastfield iron at room temperature. In particular, when the addition amount of c is limited due to the solubility relationship, the addition of an appropriate amount of this type of Vostian iron can stabilize the residue of Vostian iron, and these elements are not as good as A1 and Si. However, it also has the effect of suppressing the production of Xueming carbon iron, which can help C thicken the role of Vostian Iron «• Moreover, these elements can be strengthened by solid solution A and Si together to form the mother grains. Iron or iron can increase the resistance to dynamic deformation at high speeds. However, when the total amount of one or two of these elements is less than 0.5%, the required residual Vostian iron cannot be ensured. At the same time, the strength of the steel is reduced, which makes it impossible to effectively reduce the weight of the vehicle. The lower limit is 0.5%. In addition, when the total of these elements exceeds 3.5%, it will provoke hardening of the fertile grain iron or dysprosium iron that is the parent phase, which will hinder the increase in deformation resistance by increasing the deformation resistance, and cause the decline in the workability and toughness of the steel As well as the rise in steel costs, 3.5% is the upper limit. The Nb, Ti, and V added as required can increase the strength of the copper material by forming into broken compounds, nitrides, or gas barrier compounds, but if the total exceeds 0.3%, it is the parent iron grain. Or, a large amount of these carbides, nitrides, or carbonitrides will be precipitated in the toughened iron particles and in the particle boundary, resulting in the formation of a source of movable dislocations during high-speed deformation, and high dynamic deformation resistance cannot be obtained. The most important aspect of the present invention is to concentrate C in the residual Vosda paper. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 1 .-: ------------- .ΤΓ ------ ο (please read "Note f on the back side before filling in this page") 20 Central Bureau of Standards, Ministry of Economic Affairs, Shellfish Consumer Cooperative, India Ben A7 B7 V. Description of Invention (17) Iron constitutes obstacles And waste C, so 0.3% is the upper limit. Also, B or P may be added as needed. Among them, B is effective for strengthening the particle boundary and the high strength of the copper material. However, if the amount of B exceeds 0.01%, the effect will be saturated and the strength of the steel plate will be increased above the required level. This will hinder the improvement of high-speed forming. The deformation resistance promotes the reduction of the component workability, so 0.01% is the upper limit. Moreover, although P is effective in increasing the strength of the steel and ensuring the residual Vostian iron, if it exceeds 0.2%, it will not only cause the cost of steel to rise. In addition, it will increase the deformation resistance of the fat iron and toughened iron of the main phase above the required level, which will hinder the increase of deformation resistance during high-speed deformation and cause deterioration of natural crack resistance, fatigue characteristics, and deterioration of toughness. , So the upper limit is 0.2%. From the viewpoint of preventing the deterioration of secondary workability, creep, spot weldability and recyclability, it is appropriate to set it to 0.02% or less. Also, 'the unavoidable inclusion S contained in it, self-preventing vulcanization system The deterioration of the formability (especially the hole expansion ratio) and spot weldability due to the presence of the material should be considered, and it should be set to 0.01% or less. In addition, Ca can be added by 0.0005% or more by improving the formability (especially the hole expansion ratio) by controlling the morphology (spheroidization) of sulfide-based intermediaries. Increase the negative effect (deterioration of the hole expansion ratio) to consider, that is, 0.01% as the upper limit. In addition, REM also has the same effect as Ca, so its addition amount is set to 0.005% to 0.05% »Secondly, in order to obtain the high-strength steel sheet of the present invention, the manufacturing methods of the hot-rolled steel sheet and the cold-rolled steel sheet are described in detail. The manufacturing method of the high-strength hot-rolled steel sheet and cold-rolled steel sheet with high dynamic deformation resistance according to the present invention is to apply the continuous casting flat steel blank with the above composition to the paper size of China National Standard (CNS) A4 (210X297) Mm) 〇Ί ------ tr ------ (Please read the note f on the back before filling in this page) 21, the formability is deteriorated. If it exceeds Ar, the dynamic deformation resistance σ A7 B7 V. Description of the invention (18) Directly send it to the hot rolling project as it is, or heat-rolled after cooling. In addition to the usual continuous pounding, this type of hot rolling can also be applied to continuous thin sheet casting and hot rolling continuous technology (endless rolling). However, if the reduction in the percentage of ferrite grain iron is considered, the average crystallization of the microstructure of the thin steel plate The coarsening of the particle size causes the thickness of the steel sheet to be processed into the hot-rolled slab (the initial panel slab is preferably 25 mm or more. In addition, the hot rolling speed in the final path of the hot-rolling process is also due to the above-mentioned problem-- " Hot rolling should be performed at 500 mpm or more, and preferably at least 600 mpm. Especially in the manufacture of high-strength hot-rolled copper plates, the above-mentioned hot-rolling processing temperature should be set to Ar3-50 ° C ~ Αγ3 determined by the chemical composition of the steel. + 120 ° C temperature range. Because if it is less than Ar3-50 ° C, it will produce machining grain iron, which will cause dynamic deformation and tensile resistance ^ adyn, work hardening performance of 1 ~ 5 兕 3+ 12 (TC is due to 锢At the same time, the coarse dyn of the microstructure of the plate and the work hardening performance of 1 ~ 5% are degraded. At the same time, the kfe from the rust scale is not appropriate. The steel plate formed by the above hot rolling will enter the winding process, and it should be It is better to coil at a temperature below 500 ° C. If the temperature exceeds 500 ° C This will cause the reduction of the duty factor of the residual Vosstian iron. In addition, if you want to obtain Asada loose iron, you can set the winding temperature below 350 ° C. The above winding conditions are when the hot rolled steel plate is supplied after winding. Conditions, such as cold-rolled and annealed cold-rolled steel sheets, are not subject to the above-mentioned conditions, but can be bypassed under normal manufacturing conditions. In particular, in the present invention, the processing temperature of the hot-rolling process can be found, and the processing enters the side. There is a connected relationship between the temperature and the winding temperature. That is, as shown in the 5th and 6th circles, the above-mentioned processing temperature, the temperature on the processing entry side, and the winding temperature have specific conditions that are uniquely determined. That is, in hot rolling Processing temperature Ar, this paper size adopts China National Standard (CNS) A4 specification (210X297 mm) ------ IT -------- D (Please read the note of the $ on the back before reading) * Nest page) Printed by Zhengong Consumer Cooperative of Central Ministry of Economic Affairs 22 Printed by Zhengong Consumer Cooperative of Central Government Bureau of Economic Affairs A7 B7 V. Description of the invention (19) —50t ~ Ar3 + 120 ° C temperature range Metal parameters: A can satisfy the following hot rolling formulas (1) and (2) , But the above metal parameters: A can be expressed as follows: A = e * Xexp {(75282-42745 XCeq) / (1.978X (FT + 273)]} But, FT: processing temperature (.C)

Ceq: carbon equivalent = C + Mneq / 6 (%)

Mneq: Shovel equivalent = Mn + (Ni + Cr + Cu + Mo) / 2 (%) Final path distortion speed (s · 1) £-(v / ^ / if xA,) x (l / Vr) x / n {l / (l—r)} h: the thickness of the end plate entering the end plate h2: the thickness of the end plate exiting the end r: (h, -h2) / h1 R: roll diameter v; the exit side velocity of the last passage △ T: Processing temperature (processing temperature at the exit end of the last track) First entry temperature (processing temperature at the entry end of the first track) Αγ3: 901-325C% + 33Si%-92Mneq Then, set the average cooling rate of the outflow table to 5 Above ° C / second, and it is better to coil according to the above-mentioned metal parameter: A and the winding temperature (CT) can satisfy the condition of formula (3). 9 ^ 1ogA ^ 18 (1) AT &gt; 2lXlogA- 178 (2) CT ^ 6XlogA + 312 ........ (3) This paper adopts China National Standard (CNS) A4 specification (210X297 mm) (Please read the note on the back of the page before filling in this page.) Order ο. 23 The Central Ministry of Economic Affairs rubs out Λ Negative Workers Consumer Cooperatives Co., Ltd. Yinben A7 B7 V. Invention Talk (20) In the above formula (1), such as If logA is less than 9, it is sufficient from the viewpoint of the generation of residual r and the refinement of the micro-vision structure, which will cause the dynamic deformation to offset σ dyn and the work hardening performance of 1 to 5%. For another example, if iOgA exceeds 18, the equipment to be achieved needs to be more disguised as magic ”and in (2), if the condition of (2) cannot be satisfied, the remaining 7 is excessively stable, although the remaining on the way of deformation can be carried out. However, 'r metamorphosis' cannot fully deform in the low distortion range, which will cause dynamic deformation resistance to adyn, work hardening performance of 1 to 5%, and the like. As shown in formula (2), the lower limit of ΔΤ can be alleviated by reducing iOgA. And since the equipment should be enlarged, the upper limit of the 'ΔT' of the reduction of the residual Vostian iron's integral rate and the coarsening of the micro-vision structure should be set at 300 ° C. Moreover, if the winding temperature does not satisfy the relationship of formula (3), it will have an adverse effect on ensuring the residual amount, or the residual r is too stable when the residual T is obtained, or the residual r is still deformed during the deformation. , But can not be fully deformed in the low distortion range, will cause dynamic deformation resistance adyn, 1 ~ 5% work hardenability .. «can deteriorate. Moreover, the limit of the bypass temperature can be relaxed by increasing 10 gA. In addition, when the duty factor of the Asada loose iron is 23%, each ct can be 35 (TC). However, in order to suppress the excessive production of Asada loose iron, it is desirable to make CTg 25 ° C better β. Second, the cold rolling of the present invention The steel plate is delivered to the cold-rolled copper plate at a rolling rate of 40% or more after the hot-rolled and wire-taken projects, and the cold-rolled steel plate is then annealed. The annealing is performed as shown in Figure 7 The annealing ring is most suitable for annealing. When the final product is annealed in this continuous annealing process, it is annealed at 0_1X (Ac3-Ac 丨) + Ac, above ° C and above Ac3 + 50 ° C for 10 seconds to 3 minutes. Then, once at 1 ~ 10 ° C / sec &gt; This paper size applies Chinese National Standard (CNS) A4 specification (210 × 297 mm)-* \ p, &quot; \ o · ^ ------ tr ------ (Please read the note on the back first and then fill in the note) 24. Consumers 'Cooperatives' Seal of the Ministry of Economic Affairs, China ’s Ladder and Quasi-Staff Bureau A7-_B7_ V. Description of the invention (21) However, the speed is cooled down to The primary cooling stop temperature Tq in the range of 550 ~ 720 ° C, followed by cooling to the secondary cooling stop temperature Te at a secondary cooling rate of 10 ~ 200 ° C / s And keep in Toa for 15 seconds to 20 minutes and then cool to room temperature. ”The annealing temperature is less than the temperature determined by the chemical composition of the steel, Ac 丨 and Ac3 (as published by Maruzen; WC Leslie" Copper and Iron Materials Science "p273). In the case of O.lXiAc ^ -AcO + Ac / C, the amount of Wastfield iron obtained at the annealing temperature is too small to stably retain the remaining Wastfield iron in the final steel sheet, so 0.1 X (Ac3 — Ac 丨) + Ac / C is the lower limit. In addition, if the annealing temperature exceeds Ac3 + 50 ° C, any steel properties will not be improved, which will cause cost increase. Therefore, Ac3 + 5 (TC is the upper limit of the annealing temperature. At this temperature The annealing time is at least 10 seconds for the equalization of the temperature of the steel plate and the guarantee of the amount of iron in Wastian. However, if the above effect is more than 3 minutes, the effect will be saturated and the cost will increase. The iron in the field is transformed into fat iron, which makes C concentrated in the unreformed gray iron. It is very important to stabilize the iron in the iron field in Tuvos. If its cooling rate is less than It / s, it will take a large production line for production. Poor sex, so the lower limit is 1 ° C / s If the cooling rate exceeds 10 ° C / sec, it will not be able to fully promote the metamorphosis of the target iron. Finally, it is difficult to ensure the residual Vostian iron in the steel plate. Therefore, the upper limit is 10 ° C / sec. When the temperature is less than 550 ° C, the boron iron is generated during the cooling, which will waste the stability of Vostian Iron and discard C. In the end, a sufficient amount of residual Vostian iron cannot be obtained. Furthermore, if the above cooling is only carried out to more than At 720 ° C, it can not fully promote the iron metamorphosis of the fertilizer. In order to avoid the occurrence of cooling during the secondary cooling following the rapid cooling (please note the precautions on the back of Min Jing before filling out this page) d. .Tr This paper is again applicable to the Chinese national standard (CNS> A4 specifications ( 210X297 mm) -25-Printed on A7 B7 by Shellfish Consumer Cooperative of Central Bureau of the Ministry of Economic Affairs -------------V. Description of invention (22) Polymorphic iron and carbon iron compounds Precipitation, the minimum cooling rate must also be maintained above i0r / s, but if it exceeds 200r / s, it will cause difficulties in equipment capabilities. The cooling temperature of the secondary cooling is less than 15 ° At time c, almost all of the Vastfield iron remaining before cooling was transformed into Asada loose iron, so that it is impossible to ensure the residual Vastfield iron β and the cooling stop soil degree exceeds 450 ° C, and the dynamic deformation resistance finally obtained adyn will be reduced immediately. In order to stabilize the remaining Vosstian iron in the steel plate at room temperature, it is more appropriate to change the carbon concentration of Vostian to further improve the carbon concentration of Vostian iron. When it is lower than the temperature maintained for the toughening iron metamorphosis treatment, it should be heated to this temperature. If the heating speed is maintained at 5 ° c / sec ~ 50 ° c / sec, the fan garden will not cause the final characteristics of the copper plate to deteriorate. On the contrary, if the secondary cooling stop temperature is higher than the toughened iron processing temperature, such as Forced cooling to a toughened iron processing temperature at a cooling rate of 5 ° C / sec to 20CTC / sec, even if directly transported to a heating zone with a target temperature set in advance, the final characteristics of the steel plate will not be degraded β In addition, when the steel sheet is maintained at less than 150 ° C or when it is maintained at more than 50 ° C, sufficient residual Vostian iron cannot be ensured. Therefore, the holding temperature range is from 15 to 500eC. This Time, if the holding time of 15 (TC ~ 500t is not caught for 15 seconds, it is impossible to obtain the final required amount of residual Wastfield iron due to inadequate metamorphic iron metamorphosis. If it exceeds 20 minutes, it will be toughened. After the metamorphosis of iron, carbon iron compounds will be precipitated or wave iron metamorphism will be generated, resulting in the waste of C ′ required to generate the residual Vosstian iron, and the required amount of residual Vosstian iron cannot be obtained, so it takes 15 seconds to 20 minutes. For holding time, and to maintain toughening iron metamorphosis for 15 〇 ° c ~ 500 ° C, regardless of whether it is isothermally maintained, or within this temperature range, this paper ΛΑ is suitable for CNS (consideration) • ^ 1-1-1 II— 11 ^ -1 * ^ 1 H— — ^ 1 —Λιν— II (please read the note f on the reverse side before filling out this page) Order -Γ ·. 26 A7 B7 Zhongji Department of the Central Government Zhun Λzhengong Cooperative Cooperative Yin ¾ 5. Description of the invention (23) The temperature is intentionally changed without deteriorating the final characteristics of the steel sheet. The preferred cooling conditions after annealing according to the present invention are m〇1x (Ac3_ ACD + Ac / C above A (: After annealing at a temperature below 3 + 50 ° C for 10 seconds to 3 minutes, it is cooled to 55 to 72 ° at a cooling temperature of 1 to 10 ° C / second. 〇Second cooling start temperature Tq in the range, followed by cooling at a secondary cooling rate of 10 ~ 200 / second to the temperature determined by the annealing temperature T0 of the surface material composition: Tem-100 ° C or more and Tem or less The temperature Te is reached at the end of the secondary cooling, and then maintained at a temperature of Te_50 ° C and 500 ° C below Toa for μ seconds to 20 minutes and cooled to room temperature. This is the method of expressing the quenching end overflow degree of the continuous annealing cycle shown in the eighth circle as a function of the component annealing temperature To, and annealing below a certain limit value, and the over-aging temperature To The relationship between the end of quenching temperature Te is regulated by β. Here, Tem is the starting temperature of the Asada loose iron metamorphosis remaining at the quenching start temperature Tq. That is, Tem is a value that removes the influence of the C concentration in Vostian iron. (T1) The difference between the values (T2) indicating the effect of C concentration: Tem = T1-T2. Here T1 is the temperature calculated based on the concentration of solid solution elements other than C, and T2 is the temperature calculated from the concentration of c in the self-residual Vostian iron at the time Tq determined by the composition of the steel plate and the annealing temperature. And 'Ceq_ is the carbon equivalent remaining in Vosstian iron at the annealing temperature To. So T1 is, T1 = 561-33 X {Mn% + (Ni + Cr + Cu + Mo) / 2} 'and T2 is, Ac, = 723-0.7 X Μη%-16.9 XNi% + 29.1 X Si% + 16.9XCr%, and {Please read the notes on the back before filling out this outfit.-Α This paper is suitable for HU home transfer (CNS) Congba (2 similar to 297 books) 27 A7 Political Year 47 双双 _Β7 _ V. Description of the invention (24) (Read the note f on the back before filling in this purchase)

Ac3 = 910- 203 X (C%) 1 / 2— 15.2 XNi% + 44.7 X Si% + 104 XV% + 31.5 XMo% -30 XΜη%-llXCr% -20XCu% + 70XP% + 40XA1% + 400 χΉ% And expressed by the annealing temperature To, when Ceq · = (Ac3 — Aq) XC / (To — Aq) + (Μη + Si / 4 + / Ni / 7 + Cr + Cu + 1.5Mo) / 6, / ', If it exceeds 0.6, take T2 = 474X (Ac3-AcDXC / CTo-Aq), if it is below 0.6, take D2 = 474 father (into (; 3-eight &lt;: 1) father 0 / {3 father ( <&Lt;: 3-in (: 1) XC + [(Mn + Si / 4 + Ni / 7 + Cr + Cu + 1.5Mo) /2-0.85)] XCTo-Aq)}. Printed by the Shellfish Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, that is, if Te is less than (Tem- 100) ° C, almost all Vostian iron will be transformed into Asada loose iron, so it is not possible to obtain the required residue of Vostian. iron. In addition, if Te exceeds Tem, the resulting steel sheet becomes soft and the dynamic strength expected from the static strength (TS) cannot be obtained. Therefore, Tem is the upper limit of Te. Moreover, when Toa is above 50 ° C, boron iron and even carbon iron compounds will be generated, and waste C, which is indispensable for the production of residual Vosted iron, will not be able to obtain the required amount of residual Vosted iron. In addition, If Toa is less than Te-50 ° C, additional cooling facilities or the temperature difference between the temperature of the steel plate and the steel plate of the continuous annealing furnace will be caused by the unevenness of the material, so this temperature is the lower limit. The above steel plate composition and manufacturing method can be produced; the microscopic structure of the steel plate contains ferrous iron and / or toughened iron, which is a kind of main phase and contains 3 to 50% residual Vostian iron. The third phase of the composite 28 paper is again applicable to China's National Standard (CNS) A4 specification (210X297 mm) «Printed by the Central Industry and Technology Bureau of the Ministry of Economic Affairs of the Bayer Consumer Cooperative A 7 B7 5. Invention Description (25) Organization , And its equivalent distortion of 0% to 10% is pre-deformed, and the deformation stress in the range of 5X 102 to 5X 103 (l / s) is 3 to 10% of the equivalent distortion range when deforming. 7dyn (MPa), which can meet the 5X10 · 4 ~ 5xl (T3 (l / s) The maximum stress TS (MPa) in the static tensile test measured by the speed fan group is calculated by the formula crdyng 0.766 XTS + 250, and the work hardening index of distortion of 1 to 5% can meet the high strength steel plate with high dynamic deformation resistance of more than 0.080 " In addition, the steel sheet of the present invention may be subjected to annealing, quenching and rolling, electroplating, etc. to produce the target product. The examples are to explain the present invention based on the examples. <Example 1> The 15 types of steel materials shown in Table 1 are heated. To 1050 ~ 1250 ° C, hot rolled, cooled, and coiled under the manufacturing conditions shown in Table 2 to produce hot rolled steel sheets. "Steels that can meet the composition and manufacturing conditions of the present invention are shown in Tables 3 and 4. Contains «integral rate 3 ~ 50% initial residual Vostian iron 'with an M value of 70 or more and 250 or less determined by the solid solution [C] of the steel in the residual Vostian iron. The score is 5% to the residual Vostian Iron Skeleton integral rate after the first deformation.) / The initial residual Vostian Iron Boat integral rate is 20.3, which is moderately stable, and both can display CTdyn Xin 0.766XTS + 250 and 1 ~ 5%. Work hardening index go.〇80, 1 ~ 5% work hard Chemical index X drop strength 240 excellent impact resistance safety, and both formability and spot weldability are even more obvious. This paper is not used in the national standard rate (CNS) A4 ^ (210X297 mm) ~: -(Please read “Note f on the back side before filling out this page): Binding d 29

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7 7 AB V. Description of the invention (printed by the Central Government Bureau of the Ministry of Economic Affairs of the Ministry of Economic Affairs and Consumer Cooperatives) T &gt; but Changbei Pan ^ 0 guide. * 1: 7500 ° ~ 7000 ° 150 ° \ filial t— * U &gt; fo o 00 -0 〇 \ Ϊ-Λ u &gt; r〇1 thin i 00 o oo DJ GO ioiu% oo δ 00 δ -4 8 00 S \ 〇 ° i is y; oo 8 00 8 s Ui 8 8 i 8 1 S i § § § | l N &gt; 1— * k) »M · ^ N &gt; I: ίο ί〇io S) 5o IO k &gt; N) to * 4 ^ μ -* s: * — * bo oo H- * OO 诹 η 8 g S ΰ os 8 Η- »8 s &gt; m4 s N- * S s — δ &gt; — * H- * \ m 1 UJ s { 3 D; Cj cyi 1 1 »— * 3 ►» * δ HM * u &gt; Si 5 * 2t 孓 5 sb; δ H · * &gt; — »bR s 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇 〇〇 柰 S 丰 鸟 1— * 8 sb? S δ S u &gt; δ? ° 1 Killing period § u &gt; s u &gt; Di U &gt; 8 U) o Ul u &gt; bi O to δ u &gt; s s &gt; u &gt; J 1 Back 柰 丰 〇〇〇〇〇〇XXX 〇〇〇〇〇〇〇〇〇 柰 3 &gt; 2 雉 Su Feng —J ——: ---- of- (Please read the note on the back first) Then fill out this buy) order Ο This paper applies China National rub scale quasi (CNS) A4 size (210X297 mm) 31 V. invention is described in (28) T ^ holding polonium $ 54: 4 &amp; 9 Cen. i5 &quot;.

Printed by the Consumer Cooperative of the Central Bureau of the Ministry of Economic Affairs of the AB 5: Cj n3 s 00 On Lft u &gt; NJ I 1 1 m 1 | | IIIIIIIIII i IIIN y * OJ OJ Processing Button Weaving m * &lt; = &gt; (〇l / l bo Kl and other circular diameters at δ Rongye s gg s 00 s ss a% I 5; 1 to Lh 1 1 yi δ; 5; N &gt; to &lt; &gt; K &gt; 〇S 00 1 1 O 糸 o 〇〇o δ ooo to particle size ratio of main phase 1 tmm * o 1 1 b Η N- «KM Kj Ν« · 1— · Mo * y C? JML% 4 * m »皤OJ Ο Ln 〇〇tsj — v〇〇〇1 〇 u »Private o \ o 〇〇 \ Ul 〇s ij% fai m» Tian »1 3 ο 糸 I 〇o fe oh 1 • 〇'8 〇S 2 〇 \ o 2 wo P o {V (0 &gt; V (5) J / V (0) I 1 1 1 1 1 1 1 1 1 1 ww bs 1 U &gt; Ui &lt; equal 8 direct travel μπι Tian Tian 〇 ο 〇 oo 〇〇〇〇〇〇〇C / i 9s o M o «Production rate% 枭 军% 1 GO 00 • V · 00 00 W 〇ΰ 1 CO 1 WS 1 85 5 1« 6 Μ * s 5 s S s ΰί 1 · ^ IS 2 〇1 〇 〇〇1 1 〇〇〇〇〇〇〇〇〇1 — J_1_Γ— ι _------ ίτ—— —--- ϋ (Please read the note on the back before filling in this page) The paper size Applicable to China National Standard (CNS) A4 specification (210X297mm) V. Description of invention (29) * 1: σφη- (0.766χτ8 + 250) A7 B7

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Η- * u \ &gt; — * OJ c Η- * f * ο VC όο --4 ON t-Λ u &gt; ONΟ 瀹 瀹 3ί U) Η- * § 2 o S Di VI name au% £ KJi a Recognition § i 00 ο δ «-Λ 1 ^ Bong m bowl ^ l · · m taste 1 SI s I KJi 8 Φ s b5 cn iji S 8 b3 〇Ln g &gt; g 1 Ui δ b3 Ο 迖 迖 Μ UJ OJ N «A u &gt; ^ W ρ Η ** i ο § p § ρ s ΙΟ bg ρ i P Picture ρ ►— * ρ 8 p S pi ρ § ρ —« μΛ Ο § Preparation times ο b2 κ bR b3 〇 \ VX% ON S S ΟΟ ss 00 S5 S es Η · * Η- * 8 s Si ο — 8 o κ · * 1 H- * 00 «tn y; 1 s η -* § g Ο ΰ Luo X • H times Ξ η 3 * -1 «ih ϋ · ο phase Sh bowl ϋ · muddy 3 * 4» bowl ϋ · η 蚪 i4- n 蚪 S 'Ί * 3 * 侔 ϋ · η Η 5h bowl 0 * 4β a * bowl O a * -i «3 · ϋ- η a · Ί * Sh bowlϋ na * -1« a * n ϋ- n 5h + »ϋ · ra * 5h bowl ϋ- η a * phase η ϋ · η Ί * a * η is- 8! fg * ¥ m 1 SU \ KJ &gt; iy »kj% U \ U &gt; u * Ul times ^ t oblique oblique sighting system £ Ο s Ui g SS Ο § Η »* 3 Η ** 00 s 00 ΟΟ $ Q Lean 1 5 ϊ Μ S Ί η- ^ 1 Ui k) »-« * 1 u &gt; ζ〇 念 U) UJ δ u bo Lfi U) * fm Hanging B Bing Road Vibrating Age i S n · »s ο υ; y Oj L; NM * HA N- * a: L * j On 1— &gt; ίhand: s 0 * --------- ό ------- Yu ------ cr (Please read the note on the back of the page before filling in the nest) This paper size is applicable to China National Standards (CNS) A4 specifications (210X297 mm) 33 A7 B7 V. Description of the invention (& lt Example 2 &gt; The 25 kinds of steel materials shown in Table 5 were wound after hot rolling and cooling at Aγ3 or higher, and were pickled and then cold rolled. Then calculate the temperature of ACl, VIII (: 3) from the steel composition and perform the heating, cooling, and holding treatments as shown in Table 6 for annealing, and then cool to room temperature. It can meet the manufacturing conditions and composition conditions of the present invention. Each steel, as shown in Tables 7 and 8, can clearly indicate that the M value determined by the solid solution [C] in the residual Vosstian iron and the average Mn eq of the steel is 70 or more and 250 or less, both of which are adyng0.766xTS + 250, and The work hardening index value of distortion of 1 to 5% is superior to 40. ** \! V '' ------ IT ------ (Please read the note f on the back first (Fill in this page again.) The printed paper size of the Zhengong Consumer Cooperative of the Central Bureau of Standards and Commerce of the Ministry of Economic Affairs applies to the Chinese National Standard (CNS) A4 (210X297 mm).

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7 B V. Description of the invention (31) Printed by the Consumers ’Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs * 1: Mn + NH〇fQHM &gt; a u &gt; — ΰ to 00 Η · * 5; itchy p p f3 ρ P ρ p ί3 p E3 s LA os ρ p N- * ρ ρ 5ί ο 1¾ P ρ p Ej P KJ p ίο ρ Ε3 ρ? 3 ο ο y ρ Ε3 Ο 泫 η 1 smi — ζ — u &gt; o · — * δ y M * — NN- «) &amp; oo § * ^ Λ i Ν &gt; 8 y — ί— · yw — p — N · * M» · b ·· *) &amp; — to 's MM s P d 8 Ρ C: 〇 i § 〇p ρ o by o 〇y | og • M * 0 1 ooo 0 1 0 〇 § ρ 8 M p ί3 ο ο UJ § ο p § u &gt; 1 ρ 1 ο 1 ο 1 〇 By ro ο ο ο 〇0 1 1 0 1 Ρ § 0 1 0 1 O% o § 0 1 0 1 ο 1 1 1 1 1 ο 1 o S os ο § ρ § ο § ο § ο 'S LA 1 cn 〇1 ο to 's ο s 1 1 1 ososos ο ο SP g N · ^ Η · * ο • S 1 1 1 1 1 ο S ο .¾ ο 耷 dagger § P § 1 o § i 1 iii 1 1 1 ο 1 O ii 1 o § i ο 1 Ρ § 1 ο 1 ο § ρ § 2 * — &gt; · NMk b! Kk ic u &gt; b: O is s IB * ►— * Ν »δ P» * c: Desk » -* Is N «* MBA S Κ) S bl ίίb {No * k 1 S u: c: § g δ b: QS g &gt; S 1 〇o • 8 ο to% ρ 1 d δ &lt; P 0 1 wos S — ta * | M *) S to g »-* u &gt; y» mm * ssi ο Ν «* Ν- * s * sp D! o S δ Ul su δ KJ% o hi δ ij» δ u% s Lh Ο fe P or 2 δ Ul ο o in P § ο fci δ * Μ * ο δ: S § oy K) tarn * N »«) £ N- * S to 茗 ε to y tmm * δ δ 1 » · »S! G • xj« a * »^ &gt; i« • 4 ca SO ss CJ kM «I 萏 茜 — 00 N- * Private ss NBA 窆 1 s solvent s 00 s 00 So 00 s 8S 00 3 Lh 1 I 00 00 SS δ drop S5 id ** 4 s KJ \ oo 茗 1 00 N ^ »δ 2 οο 25 00 §; II treasure | 1 1 1 i I 1 1 s J3 s it S £ 11 ¥; £ sr Pan Tongpan painting t £ 1 £ »£ Fen i Ά 1 t &amp; 1 lift £ heavy £ 宭 t £ 1 * desire &gt; recognize children 0 = ·» Benjin --------— · Packing— (Please read the precautions on the back before filling in this page) The size of the paper is in accordance with China National Standard (CNS) A4 specification (210X297 mm) 35 A7 B7 V. Description of the invention ("Central Standards of the Ministry of Economic Affairs") Local Shellfish Consumer Cooperatives India OJ bi U &gt; L »J N &gt; OJ ►- * NJ 8 VO 00 1— * IW gg § g ON 00 〇 \ oo ON OO g § § gg § gg If IS: \ ίο S gsgg 1: δ SS so bo ss S ss δ s S η i 1 00 8 1 00 s OO 8 o oo o 00 o 00 8 S 1 00 o 3 i 9〇8 〇i 00 8 1 00 δ 00 8 Η Wiping Gas 9 & &gt; r S 8 8 S sss S sss S ss 8 sss I— ^ s 8 s 8 S Ul Ln Crt ΐ-Λ KJt u% &lt; -r * OO 00 U \ Ut i-ft OO oo ί-Λ U \ 〇 °? 〇 卺 〇〇 real o 1 | 卺 〇 real o δ o § I 1 85 〇soaoa O On § ON § ON § os real o 〇 \ 00 o 〇 ° s 1— »8 1—ft 8 8 hA S »—k 8 μ-» 8 1— »8 &gt; — * s — s 8 1—» 8 s 8 s h &gt; * s UJ o OJ o 8 — 8 N- * 8 § Nk 8 8 8 ΙΟ r? UJ 8 〇〇u &gt; 8 U &gt; 8 CO 8 OJ 8 8 b! 〇bi 〇KjJ bi o i g u &gt; 8 OJ 8 U) 8 § bi 〇 bi O 〇 o bi 〇 bl 〇 u &gt; Recognize o ^ $. . 5 U \ to iJt M LA UJ to f3 »—k Ul fo JjTJ UJ N &gt; N« * S) t-Λ U »Hk t3 will 00 Ul oo V / l K fo Lft? 3 U \ W 〇0§ ο b \ o 55 〇〇Ut K &gt; 〇In Ό o δ o U) 〇soso δ o In U \ o is o Ιλ O In ►— * ooi / l ON 〇 £ o £ ooso iji U &gt; o Pit 4 U \ L Lh s § stub § f3 o u &gt; S 1— * H- * like U) 8 o Cj H- * o: gs; H- * H- * uniform ►- * u &gt; 00 〇os d K) u &gt; UJ% cen ► «* U3 Ϊ3 OJ bi SO v〇UJ to 00 00 ΪΟ oo u &gt; H- * 00% u &gt; iu iiii § u &gt; s bi O u &gt; 8 ii u &gt; K &gt; o ΰ oiii u &gt; 8 iii bi oo 〇〇〇〇〇; o 〇〇〇〇iio oo 〇§ OO o 00 〇oo o OO 〇oo oi Di 〇s 00 〇oo o oo oo oo OO 〇 桊 孝 1 (Please read the back first (Notes for filling in this page)

This paper size applies the Chinese National Standard (CNS) A4 specification (210 X297 mm) 36 5 3 / V Ming • Luan Mingfa

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Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs τί $ 3έcen. * 1: Q &lt; ib®- (0.766XTS + 250). UJ ㈡ u &gt; y K ΰ 00 5; Cn SO 5: sv〇Ul Μ »Dad § m * \ 〇Μ CJ K) a «• ji S v0000 Μ a u &gt; m? Is-% mgsg ft ¢ 5« * 4 3 u &gt; 1 6 § 85 U% η Nye 6: N &gt; 6 Ui fcS K &gt; i K Ν · * κ «δ 0.142 1 0.164 1 0.132 0.086 1 i 1 0.141! I 1 0.144 1 1 0.126 | I 0.112 | 1 0.118 1 1 0.122] 1 0.0® 1 1 0.116 | | 0.122 | | 0.103 | 1 0.112 | 1 0.116 | I 0.112 | I 0.105 | 1 0.095 | 1 0.095 1 1 0.107 |, 0.117 1 1-5% value a 5ί ss U) 00 bs) £ «sa K δ PS ii § ΝΜ» ο P si 1 1 P 3 g P 2ί 1 1 δ 1 1 1 ob \ P m · * i 〇 · s% § o id 1 1 1 20152 24344 27168 26815 i 1 i 21090 23086 1 23345 1 I 24064 * | 2704 « 21665 I | 22440 Ί 23424 22295 22746 1 22473 | II 25172 1 22855 ι 24768 TSXT.E1 MPs ^% _ 〇Π it na * Π Ϊ 5a · η 蛘 3 * na * w O b- ο 5Α- O 輙 oa * &amp; is ο a * ¥ $ 〇 * η η ah 掬 $ 〇 »W HI a *» ϋ · 〇a * 輙 ah »〇 * a · ϋ O * O a * card» 辠 m ϋ-na · »o ¥ ϋ-5 ¥ a * 钵$ 〇a · ¥ ϋ- η 3 * ¥ »Pre-transformation 1 I Ch u» ij% Ln LTl Ui U% Vi KJ% tmrn * KJ \ OJ 〇 »Ul (• Λ pre-transformation equivalent mussel and mussel Hr Buddy Clam BH4 S UI § iS 00 o IS ^ * 4 δ i hn * 00 N〇 «Ul δ i ί Μ Q t 1% 1 to lh s S: U 00 gu ΰ KU is 〇〇 • 〇 bo bo -if &gt; I 7 IM »(Please read the note on the back and fill in this purchase first) Please use the Chinese standard (CNS) ) A4 size (210X297 mm) -38-DuPont A7 _B7, Duty Printing and Consumer Cooperation of the Central Bureau of Standards, Ministry of Economic Affairs V. Description of the invention (35) The micro-vision organization is evaluated by the following methods: The identification, transformation, and observation of the scattered iron and the residual tissues of Asahi, Asada, and the measurement of the average crystal grain size (average circle diameter) and the measurement of the duty factor are based on erosion solvents and JP-A-59-219473. The solvent was developed to cross-section the steel sheet in the rolling direction, and a photomicrograph was taken at a magnification of 1,000 times. The average diameter of the Dong circle of the residual Vostian iron was calculated from the cross section of the rolling direction by the solvent disclosed in Japanese Patent Application No. 3-351209, and the photo was taken with a magnification of 1000 times. And observe the distribution location with the same photo. The residual Vosstian iron volume fraction (Vr: unit%) was calculated from the X-ray analysis of the Mo-Kα line according to the following formula. V 7 = (2/3) {100 / (0.7 X a (211) / r (220) + 1)} + (1/3) {100 / (0.78 X a (211) / r (311) +1 )} But 'α (211), r (220), α (2ΐι), 7 (311) represent the surface strength ο the concentration of C (Cr: unit%) of the residual r is analyzed by the X-ray of the Cu-Kα line. Calculate the lattice constant (unit A: Angstrom) of the reflection angles of the (200) plane, (220) plane, and (311) plane of Staine Iron, and then calculate it according to the following formula. C7 * = (lattice number 3.572) / 0,033 The characteristic evaluation is evaluated by the following method. The tensile test was performed using JIS No. 5 (distance between 50mm and 25mm in parallel) at a distortion rate of 0.001 / s to determine the tensile strength (TS), yield strength (YS), and total elongation ( T.E1), work hardening index (11% to 5% of domain change), and calculate the Y3 parent work hardening index, reduction ratio (11) This paper size applies to China National Standard (CNS) A4 specifications (210X297 Mm) —l ·! '---- 9 ------ tr --------- ο. {Please read the note on the back before writing the ball I) 39 A7 B7 V. Invention description (36) = YS / TSX 100), TSXT.E1. For flange elongation, the 20mm punched hole is extruded from its non-deformed surface with a 30-degree conical punch, and the expansion of the hole diameter (d) and the initial hole diameter (do, 20mm) when the crack penetrates through the thickness of the plate is calculated. Hole ratio (d / do). Spot weldability is a spot welding test piece that is joined by a tip diameter electrode that is 5 times the square root of the steel plate to generate 0.9 times the dust current. When a steel chisel is used to break, if the so-called peeling break occurs, the compensation is Not suitable. As described above, the present invention can stably provide a high-strength hot-rolled steel sheet and a cold-rolled steel sheet for automobiles with excellent collision safety and formability that have not previously been achieved at a low cost, and widen the use and use conditions of the high-strength steel sheet. ίI ----- ο! (Please read the note f on the back before filling out this page) Order the printed paper on the paper of the Ministry of Economic Affairs, Central Bureau of Standards and Commerce, Consumer Cooperatives, and apply the Chinese National Standard (CNS) A4 specification (210X297 mm) 40

Claims (1)

A8 B8 C8 D8 Sixth, the scope of application for patent No. 86117962 Patent application printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Shellfish Consumer Cooperative Co., Ltd. Amendment This amendment dated June 88 is a high-strength variable steel plate with high dynamic deformation resistance, which is characterized by: The microscopic structure of the steel plate is a third-phase composite structure containing ferrous grain iron and / or altered iron as one of the main phases containing 馑 integral rate of 3 ~ 50% residual Vostian iron. And it is deformed by the equivalent distortion of 0% to 10% before it is deformed and then deformed at 5X 10-2 ~ 5 X 103 (1 / S) _3 ~ 10% of the political distortion range when deforming under the change speed range The average deformation stress σ dyn (MPa) is the maximum stress TS that can meet the static tensile test measured in the range of 5X 10 · 4 ~ 5X 10.3 · (1 / s) distortion speed before it is applied to the first deformation. (MPa) The expression σ dyn 毳 0.766XTS + 250, and the work hardening index of 1 to 5% distortion can satisfy 0.080 or more. 2. For example, the high-strength steel plate with high dynamic deformation resistance in item 1 of the scope of the patent application is characterized in that the value of the work hardening index of the above-mentioned steel plate's yield strength X distortion 1 ~ 5% can satisfy more than 40 "3. The high-strength steel plate with high dynamic deformation resistance is characterized in that the retraction structure of the finally obtained steel plate contains ferrous iron and / or toughened iron, and it is a kind of which contains 为主 integral rate of 3 ~ 50% of the third-phase composite structure of Wastian Iron, and its equivalent distortion of 0% to 10% is deformed first and then deformed in the range of 5X102 ~ 5X103 (i / s) distortion speed. The average deformation stress σ dyn of the equivalent distortion range of ~ 10% can satisfy the residual tensile force measured under the distortion speed range of 5X 10 · 4 ~ 5 X 10 · 3 (1 / s) before the pre-deformation is applied. The expression of the maximum stress TS (MPa) in the test is σ dyng 0.766 × 1. This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) 41 ------------- --------------- Line (Please read the precautions on the back before filling this page) A8B8C8D8 item has high dynamic deformation /, The scope of patent application is TS + 250, and the average solution η of the solid solution [c] and the steel in the above-mentioned residual Vostian iron is determined by the value {M eq = Mn + (Ni + Cr + Cu + Mo) / 2} (M) M = 678-428X [C] A 33Mneq is 70 or more and 250 or less, and its residual Vostian iron 艟 integral rate before its pre-deformation is equal to its residual distortion of 5% after pre-deformation. The difference of the integral rate is the residual Vostian iron ship before the pre-deformation. The integral rate is more than 30%, and the work hardening index of distortion of 1 ~ 5% can be more than 0.080. For example, a high-strength steel sheet with high dynamic deformation resistance according to any one of the scope of application for patents 1 to 3, characterized in that: the average grain size of the residual Vostian iron k is 5 / zm or less, and the residual Voss The ratio of the average grain size of Tiantie to the average grain size of ferrous grains or toughened iron in the main phase is 0.6 or less, and the average grain size of the main phase is 10 kernels or less, preferably 6 仏 mf The next "» 5. If the patent application for any of the high-strength steel plates of i ~ 3, it is characterized by the fact that the points of the above-mentioned steel plates of Asada scattered iron are 3 ~ 30%, and the average crystal grains of the Asada scattered iron The diameter is 10 M m or less, preferably 5 β m or less. 6. A high-strength steel sheet with high dynamic deformation resistance, such as any one of claims 1 to 3, is characterized by: Grain Iron Skeleton points rate is above 40%. 7. If the high-strength steel sheet with high dynamic deformation resistance is in any of the items 1 to 3 of the scope of patent application, it is characterized by: * This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) -------------------- Order i! ------- line (Jing first "read the note on the back and then fill in this page) Intellectual Property of the Ministry of Economic Affairs Printed by the Bureau ’s Consumer Cooperatives 42 A8B8C8D8 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives, Du printed 6. Scope of Patent Application The above-mentioned steel sheet has a reduction ratio of 85% or less and a tensile strength X total elongation of more than 20,000. 8. The high-strength steel plate with high dynamic deformation resistance according to any of the items i to 3 of the scope of the patent application, characterized in that the above steel plate contains, by weight, C: 0.03% or more and 0.3% or less, and Si and A1. Either one or both parties should be 0.5% to 3.0% in total, and one or both of them should contain Mn, Ni, Cr, Cu, Mo as required, and the total amount should be 0.5% to 3.5%, and the rest shall be Fe. Principal component 09. For example, the high-strength steel plate with high dynamic deformation resistance in item 8 of the scope of patent application is characterized by: 'The above-mentioned steel plate is based on heavy directors and must contain one or two of Nb, Ti, V, and PiB as required Above, among them, ^, 14, and ¥, or two or more of them are 0.3% or less in total, p is 0.3% or less, and B is 0.01% or less. 10. As the patent application scope No. 8 has a high dynamic deformation resistance The high-strength steel sheet is characterized in that the above-mentioned steel sheet further contains Ca: 0.0005% or more and 0.01% or less, and REM: 0.005% or more and 0.05% or less as needed. 11. The high-strength steel plate with high dynamic deformation resistance according to item 9 of the patent application group is characterized in that the above steel plate further contains Ca: 0.0005% or more and 0.01% or less, and REM: 0.005% or more and 0.05 by weight. % the following. 12. —A method for manufacturing high-strength hot-rolled steel plate with high dynamic deformation resistance The paper size is applicable to China National Standard (CNS) A4 (210 X 297 public love) 43 ------------ -------- Order i ·! ------- line (I first read the note on the back of the page and then write this page in Yunnan) A8B8C8D8 Shellfish consumer cooperation of Intellectual Property Bureau of the Ministry of Economic Affairs Scope of patent application: it will contain C: 0.03% or more and 0.3% or less, one or both of Si and A1 total 0.5% or more and 3.0% or less, and one or both of Mn, Ni, Cr, Cu, Mo The above total is 0.5% or more and 3.5% or less, and one or two or more of Nb, Ti, V, P, B, Ca, and REM are contained as required, and one or two or more of Nb, Ti, and V are 0.3 or more in total. Below, P 0.3% or less, B 0.01% or less, Ca 0.0005% to / '' '/ · up to 0.01%, REM: 0.005 to 0.05%, and the remaining' 1 continuous casting flat steel blanks with Fe as the main component Directly send the hot-rolling project as it is, or heat-roll after cooling and heating, that is, complete hot-rolling at the processing temperature of Ar3 ~ 50 ° C ~ Ar3 + 120 ° C, and then continue the hot rolling during the cooling process. After the average cooling is above 5 ° C / sec, the hot-rolled steel sheet is characterized by being coiled at a temperature of 500 ° C or less, and the microstructure of the hot-rolled steel sheet contains ferrous iron and / or modified iron. It is a third-phase composite tissue with any of the main phases containing hip score of 3 ~ 50% residual Vostian iron, and its equivalent distortion is 0% to 10% before being deformed before 5X 102 ~ 5X 103 (l / s) Distortion speed range 3 ~ 10% of the equivalent distortion range during deformation. The mean deformation stress σ dyn (MPa) can satisfy 5X10-4 ~ 5Xl0_3 before it is deformed. (l / s) The maximum stress TS (MPa) in the static tensile test measured under the distortion speed range is expressed by the formula σ dyn 2 0.766 X TS + 250, and the work hardening index of its distortion of 1 ~ 5% can satisfy 0.080 or more. 13. The manufacturing method of high-strength hot-rolled steel sheet with high dynamic deformation resistance, such as item 12 of the scope of patent application; This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 public love) 44 ------ ------- 0 ^ -------- Order ί! ------- line ο · (Please read the note on the back before filling out this page> A8B8C8D8 VI. Application The scope of the patent is to carry out its metal parameters in the temperature range of the above hot rolling processing temperature from Ar3-50 ° C to Ar3 + 120 ° C: A can meet the following hot rolling of formulas (1) and (2), and the above Metal parameters: A can be expressed as follows: Α = ε * Xexp {(75282- 42745 X Ce,) / C 1.978 X (FT + 273)]}, but FT: processing temperature (° C) I 丨 'Ceq: Carbon equivalent = C + Mneq / 6 (%) Mneq: Shovel equivalent = Mn + (Ni + Cr + Cu + Mo) / 2 (%) e ^ Last path distortion distortion degree (s · 1) ε = (v / yfRxh ^) x (l / Vr) x lw {l / (l— r)} h: the thickness of the end diameter of the final path into the end h2: the thickness of the end diameter of the last path of the exit r: (h! ~ h ^ / h, R : Roller diameter v: Speed at the exit side of the last track △ T: Processing temperature (processing temperature at the exit side of the last track)-Processing entry temperature (processing temperature at the entrance end of the first track) Ar3: 901- 325C% + 33Si%- 92Mneq will then set the average cooling rate of the outflow station at 5 ° C / sec or more, and take the condition that the relationship between the above-mentioned metal parameter: A and the winding temperature (CT) can satisfy the formula (3). logA ^ 18 (1) △ T221 XlogA-178 (2) CT ^ 6XlogA + 312 ........ (3) This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ( Please read "Notes on the back before filling this page) .0 ^ —---- Order ---------- Printed by the Consumers’ Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 45 Printed by the Industrial and Consumer Cooperatives A8 B8 C8 D8 6. Scope of patent application-a method for manufacturing high-strength cold-rolled steel plates with high dynamic deformation resistance: It will contain one of C: 0,03% or more and 0.3% or less, Siyu A1 or Both parties add 0.5% to 3% in total, and one or two or more kinds of Mn, Ni, Cr, Cu, Mo are required to contain 0.5% to 3.5% in total, and Nb, Ti, V, P, B, and One of Ca, REM, or two or more, and one or two or more of Nb, Ti, and V total 0.3% / /%% or less' P 0.3% or less, B 0.01% or less, Ca 0.0005% or more and 0.01% or less, REM : Above 0.005 and below 0.05%, and the remaining continuous cast flat steel slabs with Fe as the main component are directly sent to the hot rolling project as they are, or they are hot rolled after cooling and heating , And the hot-rolled steel sheet wound after hot rolling is subjected to acid 'washing and cold rolling, and then annealed by continuous annealing process to make the final product, at 0.1X (Ac3 — AcJ + Ac 丨. C above Ac3 + 50 ° After annealing at a temperature below C for 10 seconds to 3 minutes, it is cooled to a primary cooling stop temperature in the range of 550 to 720 ° C at a cooling rate of 1 to 10eC / second, and then twice to 10 to 200 ° C / second. After the cooling rate is cooled to the secondary rapture stop temperature of 15 ~ 45 ° C, it is held at a temperature of 150 ~ 500 t for 15 seconds ~ 20 minutes and then cooled to the room. The microscopic structure of the cold-rolled steel sheet contains Fertilized iron and / or dysprosium iron is a structure in which any one of the main phases is combined with the third phase containing 3 to 50% residual Vostian iron, and the equivalent distortion is more than 0% Below 10%, the deformation should be performed at a distortion speed of 5X102 ~ 5X 103 (Ι / s) before the deformation of Fanyuan's 3 ~ 10% equivalent distortion range. The average deformation force should be adyn (MPa), which can meet its application. Static tensile test measured in the range of 5X 10 · 4 ~ 5X 10_3 (l / s) distortion speed before pre-deformation. The paper size is applicable to China National Standard (CNS) A4. (210 X 297 mm) 46 -------------------- Order i -------- line (please read the note f on the back before making up (Buy and buy) A8B8C8D8 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Shellfish Consumer Cooperatives. 6. The expression of the maximum stress TS (MPa) in the scope of patent application. Σ dyn 2 0.766 X TS + 250, and its distortion of 1 to 5% of the work hardening index Can meet above 0.080 0 15. The method for manufacturing high-strength cold-rolled steel plate with high dynamic deformation resistance as described in item 14 of the patented tellurium patent garden; when the product is annealed in the continuous annealing process described above, the product is produced at 0.1X (A 卩 3 — Ac 丨) + Ac 丨. After annealing at a temperature above C and below Ac3 + 50 eC for 10 seconds to 3 minutes, it is cooled to a secondary cooling start temperature Tq of 550 to 720 eC at a primary cooling rate of 1 to 10 eC / s, followed by 10 to 200 °. The secondary cooling rate of d / s is cooled to a temperature determined by the annealing temperature To of the steel composition Tem — 100eC or more and Tem or less. After the secondary cooling temperature Te, the temperature is maintained at Te — 50 ° C or more and 500eC or less for 15 seconds. It is characterized by cooling to room temperature in ~ 20 minutes, and the microscopic structure of the cold-rolled steel sheet contains ferrous iron and / or toughened iron. It is a kind of which contains a hip score of 3 ~ 50% of the third phase composite structure of Wastfield Iron, and its equivalent distortion of 0% to 10% is first deformed, and then deformed at 5X 102 ~ 5 X103 (Ι / s) distortion rate. The average deformation stress σ dyn (MPa) in the range of 3 ~ 10% equivalent distortion can meet the deformation stress measured at 5X 10 · 4 ~ 5X l0-3 (l / s) before applying the first deformation. Work hardening with the expression σ dyn 2 0.766 XTS + 250 with distortion of 1 ~ 5% by the maximum stress TS (MPa) in static tensile test 0.080 or more. This paper size applies to China National Standard (CNS) A4 (210 X 297 male dragon) 47 ------------ ο -------- tr -------- -^ ό, (Please read the Note $ on the back side before filling out this page)