WO2018194059A1 - 鋼板及びその製造方法 - Google Patents
鋼板及びその製造方法 Download PDFInfo
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- WO2018194059A1 WO2018194059A1 PCT/JP2018/015876 JP2018015876W WO2018194059A1 WO 2018194059 A1 WO2018194059 A1 WO 2018194059A1 JP 2018015876 W JP2018015876 W JP 2018015876W WO 2018194059 A1 WO2018194059 A1 WO 2018194059A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
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- C—CHEMISTRY; METALLURGY
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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- C—CHEMISTRY; METALLURGY
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- C21D6/00—Heat treatment of ferrous alloys
- C21D6/001—Heat treatment of ferrous alloys containing Ni
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- C—CHEMISTRY; METALLURGY
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- C—CHEMISTRY; METALLURGY
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- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C—CHEMISTRY; METALLURGY
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
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- C—CHEMISTRY; METALLURGY
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- C—CHEMISTRY; METALLURGY
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C—CHEMISTRY; METALLURGY
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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- C—CHEMISTRY; METALLURGY
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- C—CHEMISTRY; METALLURGY
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- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- C—CHEMISTRY; METALLURGY
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- C21D8/0273—Final recrystallisation annealing
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- C—CHEMISTRY; METALLURGY
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- Y10T428/12986—Adjacent functionally defined components
Definitions
- the present invention relates to a steel plate and a manufacturing method thereof, and particularly relates to a steel plate for cans and a manufacturing method thereof.
- the present invention is an invention made with such circumstances, and provides a steel plate for cans having high strength, excellent formability and appearance, and reduced variation in r value in the plate width direction of the steel plate, and a method for producing the same. To do.
- the present inventors have intensively studied a method for obtaining a steel plate for cans which has high strength, excellent formability and appearance, and further has reduced r value variation in the plate width direction of the steel plate. As a result, it was found that the characteristics of the steel sheet can be controlled by appropriately adjusting the chemical components of the steel sheet and further controlling the annealing conditions after cold rolling.
- the present invention has been further studied based on the above findings, and the gist thereof is as follows.
- T the annealing temperature (° C.)
- t the time (seconds) that passes through the annealing soaking zone
- X the plate tension in the soaking zone (MPa)
- a steel plate for cans having high strength and excellent formability and appearance and a steel plate for cans having high strength and excellent formability and appearance, and further reduced variation in r value in the plate width direction of the steel plate. Can be provided.
- the r value is a ratio of the strain amount in the width direction to the strain amount in the plate thickness direction at the time of tensile deformation, and is one of indexes representing formability (deep drawability).
- the r value is preferably large.
- a large r value means that the strain amount in the plate thickness direction is smaller than the strain amount in the width direction, and deep drawing can be performed without reducing the plate thickness.
- it is effective to reduce the amount of C. However, if the amount of C is reduced, it becomes difficult to ensure strength.
- both high strength and high r value are achieved without increasing the cost and without increasing the anisotropy of the steel sheet.
- Ti, Nb, B, or the like is not added in order to leave a solid solution C for ensuring strength. Further, by reducing the addition of Al, N is suppressed from becoming AlN, and solid solution N for ensuring the strength remains. As a result, both high strength and high r value are achieved.
- C is an element added to ensure strength. If the amount of C is less than 0.0010%, the required strength cannot be ensured. If the amount of C exceeds 0.0035%, the required r value cannot be secured. For this reason, the amount of C is 0.0010% or more and 0.0035% or less, and it is preferable to set it to 0.0015% or more and 0.0035% or less from the viewpoint of securing appropriate strength.
- Al is an element usually used for deoxidation of steel.
- the addition amount is reduced as much as possible in order to make N in the steel solute N without changing to AlN. If the content of Al in the steel sheet is less than 0.005%, solid solution strengthening of N can be obtained without substantially changing the solid solution N in the steel to AlN. If the Al content is less than 0.005%, a good ferrite crystal aspect ratio can be obtained.
- deoxidation is performed with Mn described later in order to reduce Al in the steel sheet as much as possible.
- a preferable Al amount is 0.003% or less, and more preferably 0.002% or less.
- Si is an element effective for securing strength and effective for deoxidation, but is not an essential element in the present embodiment. If the Si content exceeds 0.050%, surface defects called scale patterns are generated in the hot rolling process, and the appearance is impaired, so the Si content is 0.050% or less. In order to obtain effects of deoxidation and ensuring strength, it is preferable to contain 0.005% or more. For this reason, Si amount is preferably 0.005% or more and 0.050% or less, and more preferably 0.005% or more and 0.030% or less from the viewpoint of corrosion resistance.
- Mn is an element effective in preventing hot cracking due to S and stabilizing the appearance.
- it since it is a deoxidizing element that changes to Al, it is contained in an amount of 0.10% or more. Excessive addition of Mn deteriorates the corrosion resistance, deteriorates the cold rolling property and formability due to hardening of the steel sheet, and adversely affects the appearance. For this reason, the amount of Mn is 0.10% or more and 0.50% or less.
- P is an element that hardens steel and deteriorates workability. Moreover, in order to cause a shaping
- S 0.040% or less
- S is an element that exists as an inclusion in steel and reduces ductility. Further, it causes surface cracking and causes poor appearance and deterioration of corrosion resistance, so the content is made 0.040% or less. When particularly good corrosion resistance is required, the content is preferably 0.005% or less.
- the S content may be 0, but may be contained by 0.001% or more for convenience of desulfurization cost and time.
- N is an element necessary for increasing the strength of the steel sheet by solid solution strengthening. Even if N is not intentionally added, 0.0010% or more is usually contained as an impurity, and by reducing the amount of Al, solid solution strengthening by N can be obtained, so the lower limit is not specified. On the other hand, if N exceeds 0.0050%, the r value decreases, so the content is made 0.0050% or less.
- the preferable lower limit of N is 0.020% from the viewpoint of strength, and the preferable upper limit is 0.0040% from the viewpoint of r value.
- the balance of the component is Fe and impurities.
- the structure of the steel sheet of the present embodiment is a structure composed of ferrite and inclusions and / or precipitates, and the ratio of the length in the sheet thickness direction (aspect ratio) to the length in the sheet width direction of the ferrite crystal grains is 0. 70 or more.
- a large aspect ratio means that the crystal grains are not crushed by rolling.
- the aspect ratio of ferrite crystal grains can be made 0.70 or more by adding Al to less than 0.005 mass%.
- securing an aspect ratio of 0.70 or more is an effective means for setting the minimum r value to 1.50 or more without performing special N addition. That is, suppressing Al addition is an effective means for setting the minimum r value to 1.50 or more.
- the total elongation of the steel sheet can be improved by controlling the aspect ratio.
- the total elongation is generally small, about 1.0 to 2.5%, but preferably 3.0 by appropriately controlling the aspect ratio. %, More preferably 4.0% or more of total elongation can be obtained.
- the total elongation is measured by a metal material tensile test method shown in “JIS Z 2241 (2011)”.
- the measurement method of aspect ratio is as follows.
- the cross-section perpendicular to the rolling direction at the center of the plate width is etched with Nital and magnified by 1000 times with an optical microscope.
- the thickness of the crystal structure in the field of view of total thickness (mm) x 0.20 mm The length and the length in the plate width direction are measured, and the length in the plate thickness direction / the length in the plate width direction is referred to as an aspect ratio. Then, the aspect ratio of all tissues in the visual field is calculated, and the average value is defined as the aspect ratio. Observation may be performed in one field of view.
- the steel sheet of the present embodiment has a yield strength of 500 MPa or more, and in the range of 0 to 90 ° in the rolling direction, the minimum r value is 1.50 or more, the average r value is 1.70 or more, r The difference between the maximum value and the minimum value is 0.50 or less.
- the yield strength is 500 MPa or more from the viewpoint of ensuring the buckling strength of the can body.
- the yield strength is measured by a metal material tensile test method indicated in “JIS Z 2241 (2011)”.
- the yield strength can be made 500 MPa or more by setting the steel components in the above-described range and performing appropriate temper rolling as described later.
- a method of forming a cylinder so that the rolling direction is the circumferential direction of the can normal grain
- a method of forming a cylinder so that the direction perpendicular to the rolling is the circumferential direction of the can The minimum r value is preferably 1.50 or more because the can may be produced in either direction.
- the steel sheet of the present embodiment has a minimum r value of 1.50 or more and an average r value of 1.70 or more in the range of 0 to 90 ° with respect to the rolling direction, so that it is formed even if the yield strength is 700 MPa. Generation of wrinkles at the time can be suppressed.
- the minimum r value is preferably 1.60 or more, more preferably 1.70 or more.
- the average r value is preferably 1.75 or more, more preferably 1.80 or more. Although the maximum value of r value is not specified, it is substantially 2.50 or less.
- the difference between the maximum value and the minimum value of the r value in the range of 0 to 90 ° with respect to the rolling direction is 0.5 or less. That is, since the in-plane anisotropy is small, the ear rate described later is good, and the earrings on the two-piece body during can making are small.
- the r value is often measured at 0 °, 45 °, and 90 ° with respect to the rolling direction, but the minimum r value, maximum r value, and average r value in this embodiment are 0 to 90 ° in the rolling direction.
- the r value is measured in increments of 1 ° within the range, and obtained from the obtained value.
- the r value was calculated based on crystal orientation data obtained by an EBSD (Electron Backscatter Diffraction, electron beam backscatter diffraction) method using a scanning electron microscope.
- EBSD Electro Backscatter Diffraction, electron beam backscatter diffraction
- the steel components are adjusted as described above, and in the annealing process after hot rolling, winding, and cold rolling, the grain growth is promoted and the aspect ratio of the ferrite crystal grains is appropriately controlled. To do. Thereby, it is possible to achieve both high strength and high r value at low cost without adding a large amount of alloy element and N.
- Annealing can be performed by, for example, continuous annealing. If the annealing temperature is too low, it will be in an unrecrystallized state and the steel will be hardened. If it is too high, the steel will become soft and hinder the operation.
- T is the annealing temperature (° C.)
- t is the time (seconds) that passes through the annealing soaking zone
- X is the plate tension in the soaking zone (MPa)). It implements so that the value derived
- the minimum r value can be 1.50 or more by setting the value of the expression (1) to 100 or more. Further, as shown in FIG. 4, by setting the value of the expression (1) to 280 or less, the difference between the maximum r value and the minimum r value can be set to 0.50 or less.
- the variation of the r value in the sheet width direction of the steel sheet can be reduced by setting the value of the expression (1) within the above range.
- the variation of the r value in the plate width direction is obtained by measuring the average r value at each location based on the above measurement method at three locations 10 mm from the center of the steel plate and both ends in the steel plate width direction.
- the soaking zone time is preferably 25 to 60 seconds as long as the formula (1) is satisfied. Further, the plate tension in the soaking zone is preferably 5 to 25 MPa within a range satisfying the formula (1).
- temper rolling is performed on the annealed steel sheet.
- a two-stand temper mill can be used.
- the rolling rate of temper rolling is 18% or more in order to make the yield strength of the steel plate 500 MPa or more.
- the upper limit of the rolling rate is not particularly defined, but 40% is close to the upper limit of the rolling rate on the temper rolling equipment, and is a guideline value that cannot increase the yield strength even if the rolling rate is increased further.
- the surface of the steel plate may be plated with Sn, Cr or the like. After plating, a resin film may be attached to one side or both sides of the steel plate surface.
- FIG. 5 is a schematic view of a steel plate having plating and / or a resin film.
- (A) is only plating
- (b) is only a resin film
- (c) is a form having plating and a resin film.
- FIG. 5 shows an example in which plating and / or a resin film is provided only on one side of a steel plate, it may be provided on both sides of the steel plate. Moreover, the structure where both sides differ may be sufficient, for example, one side is provided only with plating, and the other side is provided with plating and a resin film.
- the aspect ratio of the ferrite crystal grains is controlled by reducing the Al content and suppressing the formation of AlN. Furthermore, by appropriately controlling the annealing conditions that combine soaking temperature, soaking time, and soaking tension, the growth of crystal grains is controlled to achieve a high r value. It is possible to reduce the difference between the maximum value and the minimum value, and further reduce the variation of the r value in the plate width direction.
- a steel plate for cans having high strength and excellent formability and appearance can be obtained.
- even a steel plate for cans having a thickness of less than 0.2 mm can have excellent formability and appearance while having high strength.
- the thickness of the steel plate is not particularly limited, but the thickness of the steel plate for cans is generally about 0.12 to 0.18 mm.
- Example 1 Cold-rolled steel sheets having the components shown in Table 1 were annealed at the annealing temperature, soaking time shown in Table 2, and soaking in the soaking zone, and subjected to temper rolling. A 16 mm steel plate for cans was produced.
- the aspect ratio, yield strength, minimum r value, average r value, and difference between the maximum r value and the minimum r value of the ferrite crystal grains were measured by the method described above.
- wrinkles, ear rate, moldability, and appearance were evaluated by the following procedure.
- Wrinkle evaluation is performed by visually observing the shape of the can after making the can and confirming the presence or absence. The case where there is no wrinkle is “G” (Good), and the case where there is a wrinkle is “P” (Poor). .
- the ear rate is obtained by punching a disk of ⁇ 124 mm from a steel plate, creating a cylindrical ⁇ 60 mm cup using a punch and a die, measuring the height of the entire circumference, and calculating variations.
- the average value was calculated by measuring the height at 360 points on the entire circumference of the cup, and (maximum value ⁇ minimum value) / average value ⁇ 100 was defined as the ear rate, and 5% or less was accepted.
- Formability is evaluated by visually checking for cracks and twists in the processed product after molding. “G” (Good) when there is no crack or twist, and “P” (Poor) when there is a crack or twist. It was.
- the steel sheet for cans according to the present embodiment was excellent in wrinkle evaluation and ear rate evaluation, and showed excellent performance in formability and appearance.
- Example 2 No. in Table 1 and Table 2 5, no. for twelve steel plates, the r value variation in the plate width direction was measured.
- the variation of the r value is the difference between the maximum value and the minimum value of the average r value at the three locations, as measured in the same manner as in Example 1 at three locations, 10 mm from the center and both ends of the steel plate. evaluated.
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Abstract
Description
100≦0.027×ln(t)×T×ln(X)≦280 (1)
(ただし、Tは焼鈍温度(℃)、tは焼鈍均熱帯を通過する時間(秒)、Xは均熱帯での板張力(MPa))
Cは、強度を確保するために添加される元素である。C量が0.0010%未満では、必要な強度が確保できない。C量が0.0035%を超えると、必要なr値を確保できない。このため、C量は、0.0010%以上0.0035%以下であり、適切な強度の確保する観点から、0.0015%以上0.0035%以下とすることが好ましい。
Alは、通常、鋼の脱酸に用いられる元素である。本実施形態の鋼板においては、鋼中のNをAlNにすることなく固溶Nとするために、その添加量は極力少なくする。鋼板中のAlの含有量が0.005%未満であれば、鋼中の固溶NをほぼAlNにすることなく、Nの固溶強化が得られる。また、Al量が0.005%未満であれば、良好なフェライト結晶粒のアスペクト比が得られる。鋼板中のAlを極力少なくするため、本実施形態では、後述のMnにより脱酸を行う。好ましいAl量は0.003%以下であり、より好ましくは0.002%以下である。
Siは、強度確保に有効な元素であり、また、脱酸にも有効であるが、本実施形態では必須の元素ではない。Si量が0.050%を超えると、熱延工程でスケール模様と呼ばれる表面欠陥が発生し、外観が損なわれるので、Si量は0.050%以下とする。脱酸、強度確保の効果を得るためには、0.005%以上含有させることが好ましい。このため、Si量は、0.005%以上0.050%以下が好ましく、耐食性の観点から、0.005%以上0.030%以下がより好ましい。
Mnは、Sによる熱間割れを防止して外観を安定させる上で有効な元素である。また、本実施形態ではAlに変わる脱酸元素であるので、0.10%以上含有させる。Mnの過度の添加は、耐食性を悪化させ、鋼板の硬質化による冷間圧延性、成形性を悪化させ、外観に悪影響を与えるため、0.50%以下とする。このため、Mn量は、0.10%以上0.50%以下である。
Pは、鋼を硬質化させ、加工性を悪化させる元素である。また、成形不良をひきおこし、外観にも悪影響を与えるため、含有量は0.040%以下とする。より成形性を確保するには、0.020%以下とするのが好ましい。Pの含有量は0でもよいが、脱りんコスト及び時間の都合から、0.001%以上含有してもよい。
Sは、鋼中に介在物として存在し、延性を低下させる元素である。さらに、表面割れを引き起こし外観不良、耐食性の劣化をもたらすので、含有量は0.040%以下とする。特に良好な耐食性が要求される場合は、0.005%以下とすることが好ましい。Sの含有量は0でもよいが、脱硫コスト及び時間の都合から、0.001%以上含有してもよい。
Nは、固溶強化による鋼板強度の増加に必要な元素である。Nは意図的に添加しなくとも、通常、不純物として0.0010%以上含有され、Al量を低減することにより、Nによる固溶強化は得られるので、下限は規定しない。一方、Nが0.0050%を超えるとr値が低下するので、0.0050%以下とする。強度の観点からNの好ましい下限は0.020%であり、r値の観点から好ましい上限は0.0040%である。
0.027×ln(t)×T×ln(X) (1)
(ただし、Tは焼鈍温度(℃)、tは焼鈍均熱帯を通過する時間(秒)、Xは均熱帯での板張力(MPa))
で導かれる値が、100以上280以下を満たすように実施し、r値をコントロールする。
表1に示す成分の冷延鋼板に、表2に示す焼鈍温度、均熱帯通板時間、均熱帯での板張力で焼鈍を施し、さらに調質圧延を施し、板厚0.14~0.16mmの缶用鋼板を製造した。
表1、表2のNo.5、No.12の鋼板について、板幅方向でのr値のばらつきを測定した。r値のばらつきは、鋼板の中央部、両端からそれぞれ10mmの位置の3箇所で、実施例1と同様に平均r値を測定し、3箇所の平均r値の最大値、最小値の差で評価した。
2 Sn又はCrめっき層
3 樹脂フィルム
Claims (9)
- 質量%で、
C :0.0010~0.0035%、
Si:0.050%以下、
Mn:0.10~0.50%、
P :0.040%以下、
S :0.040%以下、
Al:0.005%未満、及び
N :0.0050%以下
を含有し、残部がFe及び不可避的不純物であり、
フェライト結晶粒の板幅方向長さに対する板厚方向長さの比の平均値が0.70以上であり、
降伏強度が500MPa以上であり、
圧延方向0~90°の範囲で、r値の最小値が1.50以上、r値の平均値が1.70以上、r値の最大値と最小値の差が0.50以下である
ことを特徴とする鋼板。 - 圧延方向0~90°の範囲で、r値の最小値が1.60以上、r値の平均値が1.75以上であることを特徴とする請求項1に記載の鋼板。
- 鋼板表面にSnめっき層を有する請求項1又は2に記載の鋼板。
- 鋼板表面にCrめっき層を有する請求項1又は2に記載の鋼板。
- 片面又は両面の表面に、さらに樹脂フィルムを有する請求項1~4のいずれか1項に記載の鋼板。
- 質量%で、
C :0.0010~0.0035%、
Si:0.050%以下、
Mn:0.10~0.50%、
P :0.040%以下、
S :0.040%以下、
Al:0.005%未満、及び
N :0.0050%以下
を含有し、残部がFe及び不可避的不純物であるスラブに、熱延、酸洗、冷延を施し、
得られた冷延鋼板に、下記(1)式を満たす焼鈍温度T、均熱帯を通過する時間t、及び均熱帯での板張力Xにて、焼鈍を施し、
その後調質圧延を行う
ことを特徴とする鋼板の製造方法。
100≦0.027×ln(t)×T×ln(X)≦280 (1)
(ただし、Tは焼鈍温度(℃)、tは焼鈍均熱帯を通過する時間(秒)、Xは均熱帯での板張力(MPa)) - 鋼板表面にSnめっきを施すことを特徴とする請求項6に記載の鋼板の製造方法。
- 鋼板表面にCrめっきを施すことを特徴とする請求項6に記載の鋼板の製造方法。
- 片面又は両面の表面に、さらに樹脂フィルムを被覆することを特徴とする請求項6~8のいずれか1項に記載の鋼板の製造方法。
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| US16/605,778 US11098386B2 (en) | 2017-04-17 | 2018-04-17 | Steel sheet and method of manufacturing same |
| JP2018548011A JP6460295B1 (ja) | 2017-04-17 | 2018-04-17 | 鋼板及びその製造方法 |
| PE2019002048A PE20191770A1 (es) | 2017-04-17 | 2018-04-17 | Chapa de acero y metodo para fabricacion de la misma |
| MX2019012329A MX2019012329A (es) | 2017-04-17 | 2018-04-17 | Lamina de acero y metodo de fabricacion de la misma. |
| CONC2019/0011441A CO2019011441A2 (es) | 2017-04-17 | 2019-10-16 | Chapa de acero y método para fabricación de la misma |
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| JPH0741903A (ja) * | 1993-08-02 | 1995-02-10 | Nippon Steel Corp | 加工性に優れ異方性の小さい深絞り用熱延鋼板およびその製造方法 |
| JPH10280089A (ja) * | 1997-04-03 | 1998-10-20 | Kawasaki Steel Corp | 2ピース変形缶用鋼板および2ピース変形缶体、ならびにそれらの製造方法 |
| JP2005200751A (ja) * | 2004-01-19 | 2005-07-28 | Jfe Steel Kk | 耐二次加工脆性およびめっき密着性に優れた高成形性燃料タンク用めっき熱延鋼板およびその製造方法 |
| JP2016079505A (ja) * | 2014-10-10 | 2016-05-16 | Jfeスチール株式会社 | 王冠用鋼板およびその製造方法 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019167933A1 (ja) * | 2018-02-28 | 2019-09-06 | Jfeスチール株式会社 | 冷延鋼板及びその製造方法 |
| JP6631762B1 (ja) * | 2018-02-28 | 2020-01-15 | Jfeスチール株式会社 | 冷延鋼板及びその製造方法 |
| US11345974B2 (en) | 2018-02-28 | 2022-05-31 | Jfe Steel Corporation | Cold rolled steel sheet and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| US20200123631A1 (en) | 2020-04-23 |
| JPWO2018194059A1 (ja) | 2019-04-25 |
| MX2019012329A (es) | 2019-12-19 |
| US11098386B2 (en) | 2021-08-24 |
| JP6460295B1 (ja) | 2019-01-30 |
| CO2019011441A2 (es) | 2020-04-01 |
| PE20191770A1 (es) | 2019-12-17 |
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