[go: up one dir, main page]

US20110192503A1 - Method for controlling variations of al-ti-c alloy grain refinement ability through controlling compression ratio - Google Patents

Method for controlling variations of al-ti-c alloy grain refinement ability through controlling compression ratio Download PDF

Info

Publication number
US20110192503A1
US20110192503A1 US12/867,195 US86719510A US2011192503A1 US 20110192503 A1 US20110192503 A1 US 20110192503A1 US 86719510 A US86719510 A US 86719510A US 2011192503 A1 US2011192503 A1 US 2011192503A1
Authority
US
United States
Prior art keywords
alloy
controlling
press process
compression ratio
refinement ability
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/867,195
Inventor
Xuemin Chen
Qingdong Ye
Jianguo Li
Chaowen Liu
Yueming Yu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Sunxing Light Alloy Materials Co Ltd
Original Assignee
Sun Xing Chemical and Metallurgical Materials (Shenzhen) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sun Xing Chemical and Metallurgical Materials (Shenzhen) Co Ltd filed Critical Sun Xing Chemical and Metallurgical Materials (Shenzhen) Co Ltd
Assigned to SUN XING CHEMICAL & METALLURGICAL MATERIALS (SHENZHEN) CO., LTD. reassignment SUN XING CHEMICAL & METALLURGICAL MATERIALS (SHENZHEN) CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, XUEMIN, LI, JIANGUO, LIU, CHAOWEN, YE, QINGDONG, YU, YUEMING
Publication of US20110192503A1 publication Critical patent/US20110192503A1/en
Assigned to SHENZHEN SUNXING LIGHT ALLOYS MATERIALS CO., LTD. reassignment SHENZHEN SUNXING LIGHT ALLOYS MATERIALS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUN XING CHEMICAL & METALLURGICAL MATERIALS (SHENZHEN) CO., LTD.
Abandoned legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising

Definitions

  • the present invention relates to processing techniques, especially relates to a method for controlling variations of Al(aluminum)-Ti(titanium)-C(carbon) alloy crystal grain refinement through controlling a ratio of sectional area of Al—Ti—C alloy before press processing to after press processing (namely compression ratio) during a production of the Al—Ti—C alloy.
  • Al—Ti—C alloy is much popularly employing in Al material machining as a most efficient preliminary alloy for Al and Al alloy coagulation crystal grain refinement.
  • a refinement ability of the Al—Ti—C alloy crystal grain is a very important factor when judging a quality of Al processing material.
  • the US aluminum association has specially ruled an AA value to represent the crystal grain refinement ability.
  • the AA value is a value that can be used for measuring the Al—Ti—C alloy crystal grain refinement ability, and the lesser the AA value is, the better the refinement ability of the Al—Ti—C alloy is. That is, the lesser AA value that the Al—Ti—C alloy added during Al and Al alloy producing process has, the more refined the crystal grain of the Al and Al alloy are. With a development of the process and refinement technology, the AA value is decreased from 250 at very beginning to 170. Presently, alloy fabrication technology is focused on material components, melting process, and such like. However, a quality control during a press process of the Al—Ti—C alloy has been ignored or indifferent to people.
  • the press process includes mill rolling and cast extrusion machine extruding, and many believe that a ratio of the sectional area before press process to that after press process (defined as compression ratio), a variation of temperatures before and after press process, a line speed at exit, and a quantity of the standers have relations with the refinement ability of the Al—Ti—C alloy crystal grain, and there is no quantitative optimal control method for control the refinement ability of the Al—Ti—C alloy crystal grain through these respects including compression ratio.
  • compression ratio a ratio of the sectional area before press process to that after press process
  • One exemplary embodiment of the present invention is a method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy including: A. establishing a relationship between variations of refinement ability of Al—Ti—C alloy crystal grain and parameters of press process of the Al—Ti—C alloy; setting the parameters of press process and controlling the variation of the refinement ability of the Al—Ti—C alloy crystal grain through controlling a value of the compression ratio.
  • FIG. 1 is a schematic view of continuous casting and tandem rolling manufacturing process employing a method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy according to an exemplary embodiment of the present invention.
  • FIG. 2 is a schematic view of continuous casting and continuous extruding manufacturing process employing the method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy.
  • FIG. 3 is a schematic, plane structural view of part of a rolling mill used for the method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy.
  • FIG. 4 is a schematic, plane structural view of a cast extrusion machine used for the method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy.
  • the continuous casting and tandem rolling machines includes a rolling mill 30 and a cooling module for Al—Ti—C alloy during a cooling press process.
  • the cooling module includes a temperature sensor for detecting a temperature before the press process of the Al—Ti—C alloy and a temperature after the press process of the Al—Ti—C alloy.
  • the press process of the Al—Ti—C alloy is completed through a cooperation of two rollers 31 of the rolling mill 30 , and the Al—Ti—C alloy maintains solid state before, after, and during the press process.
  • an instantaneous temperature of the Al—Ti—C alloy is about the same as an input temperature, and after the pressure being released, an instantaneous temperature of Al—Ti—C alloy is about the same as an output temperature, therefore it is convenient to detect temperatures of the two points.
  • Al—Ti—C alloy melt is put into a crystallize wheel 20 from a crucible 10 thereby forming an Al—Ti—C alloy bar. Thereafter, the bar-shaped Al—Ti—C alloy is put into the rolling mill 30 to conduct press process.
  • An amount of standers of the rolling mill 30 could be 3, 4, 5, 6, 7, 8, 9 or 10. In the illustrated embodiment as shown in FIG. 1 , an amount of standers of the rolling mill 30 is 10.
  • one stand of the rolling mill 30 is shown in enlarged view. The two rollers 31 of the rolling mill 30 are rolling inward and toward each other. S 1 is denoted for the sectional area before press process, and S 2 is denoted for the sectional area after the press process.
  • the cooling module is configured for spraying cooling fluid 50 onto the rollers 31 of the rolling mill 30 .
  • the cooling fluid 50 can be water.
  • the Al—Ti—C alloy comes out from the rolling mill 30 and forms an Al—Ti—C alloy rod.
  • ⁇ AA K ⁇ D ⁇ V /( ⁇ T ⁇ n )
  • K is a constant and can be calculated according the data of table 1 to be 5.13.
  • AT represents a temperature variation of the Al—Ti—C alloy before the press process and after the press process.
  • N represents the number of the standers of the rolling mill 30 .
  • the press process parameters including temperature variation ⁇ T, line speed of the outlet V, and the amount of the standers are normally fixed, and through controlling on the compression ratio of the press process of the Al—Ti—C alloy, the refinement ability variation ⁇ AA can be controlled precisely.
  • ⁇ T 4° C.
  • V 6 m/s
  • the continuous casting and continuous extruding machines includes a casting extrusion machine 40 and a cooling module for Al—Ti—C alloy during a cooling press process.
  • the press process of the Al—Ti—C alloy is competed in a roller of the casting extrusion machine 40 .
  • the Al—Ti—C alloy maintains solid state before, after, and during the press process.
  • an instantaneous temperature of the Al—Ti—C alloy is about the same as an friction heat temperature
  • an instantaneous temperature of Al—Ti—C alloy is about the same as an temperature outputted from the casting extrusion machine 40 , therefore it is convenient to detect temperatures of the two points.
  • Al—Ti—C alloy melt is put into a crystallize wheel 20 from a crucible 10 thereby forming an Al—Ti—C alloy bar. Thereafter, the bar-shaped Al—Ti—C alloy is put into the casting extrusion machine 40 to conduct press process.
  • Al—Ti—C alloy melt is put into a crystallize wheel 20 from a crucible 10 thereby forming an Al—Ti—C alloy bar. Thereafter, the bar-shaped Al—Ti—C alloy is put into the casting extrusion machine 40 to conduct press process.
  • An amount of the standers of the casting extrusion machine 40 is as shown in FIG. 2 .
  • S 1 is denoted for the sectional area before press process
  • S 2 is denoted for the sectional area after the press process.
  • the temperature of the Al—Ti—C alloy is raised when being processed in the casting extrusion machine 40 and the Al—Ti—C alloy is altered into semifluid.
  • the cooling module spraying cooling fluid into the casting extrusion machine 40 .
  • a temperature difference ⁇ T of the Al—Ti—C alloy before the press process and after the press process can be controlled within a proper range.
  • the cooling fluid can be water.
  • the Al—Ti—C alloy comes out from the casting extrusion machine 40 and forms an Al—Ti—C alloy rod.
  • ⁇ AA K ⁇ D ⁇ V /( ⁇ T ⁇ n )
  • ⁇ AA AA 1 ⁇ AA 2 , wherein AA 1 represents a refinement ability value of the Al—Ti—C alloy before the press process, AA 2 represents a refinement ability value of the Al—Ti—C alloy after the press process.
  • K is a constant and can be calculated according the data of table 1 to be 5.13.
  • ⁇ T represents a temperature variation of the Al—Ti—C alloy before the press process and after the press process.
  • V represents a line speed of the outlet.
  • the press process parameters including temperature variation ⁇ T, line speed of the outlet V, and the amount of the standers are normally fixed, and through controlling on the compression ratio of the press process of the Al—Ti—C alloy, the refinement ability variation ⁇ AA can be controlled precisely.
  • ⁇ T 150° C.
  • V 4 m/s
  • the method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy has overcome the deficiencies of conventional technique for Al—Ti—C alloy process, and proved that variations of the refinement ability can be controlled through controlling a compression ratio of sectional area of Al—Ti—C alloy.
  • the variations of the refinement ability of Al—Ti—C alloy crystal grain can be precisely controlled by controlling the compression ratio.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Forging (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Extrusion Of Metal (AREA)
  • Metal Rolling (AREA)

Abstract

A method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy including: A. establishing a relationship between variations of refinement ability of Al—Ti—C alloy crystal grain and parameters of press process of the Al—Ti—C alloy; setting the parameters of press process and controlling the variation of the refinement ability of the Al—Ti—C alloy crystal grain through controlling a value of the compression ratio.

Description

  • The present invention relates to processing techniques, especially relates to a method for controlling variations of Al(aluminum)-Ti(titanium)-C(carbon) alloy crystal grain refinement through controlling a ratio of sectional area of Al—Ti—C alloy before press processing to after press processing (namely compression ratio) during a production of the Al—Ti—C alloy.
    • GENERAL BACKGROUND
  • Currently, Al—Ti—C alloy is much popularly employing in Al material machining as a most efficient preliminary alloy for Al and Al alloy coagulation crystal grain refinement. A refinement ability of the Al—Ti—C alloy crystal grain is a very important factor when judging a quality of Al processing material. Usually, the better the Al—Ti—C alloy crystal grain refinement ability is, the higher yield strength and the better malleability of the Al material are. Therefore, the Al—Ti—C alloy manufacturers and research organizations are forward into developing improvements of the Al—Ti—C alloy crystal grain refinement ability. The US aluminum association has specially ruled an AA value to represent the crystal grain refinement ability. The AA value is a value that can be used for measuring the Al—Ti—C alloy crystal grain refinement ability, and the lesser the AA value is, the better the refinement ability of the Al—Ti—C alloy is. That is, the lesser AA value that the Al—Ti—C alloy added during Al and Al alloy producing process has, the more refined the crystal grain of the Al and Al alloy are. With a development of the process and refinement technology, the AA value is decreased from 250 at very beginning to 170. Presently, alloy fabrication technology is focused on material components, melting process, and such like. However, a quality control during a press process of the Al—Ti—C alloy has been ignored or indifferent to people. The press process includes mill rolling and cast extrusion machine extruding, and many believe that a ratio of the sectional area before press process to that after press process (defined as compression ratio), a variation of temperatures before and after press process, a line speed at exit, and a quantity of the standers have relations with the refinement ability of the Al—Ti—C alloy crystal grain, and there is no quantitative optimal control method for control the refinement ability of the Al—Ti—C alloy crystal grain through these respects including compression ratio.
  • What is needed, therefore, is a method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy that can overcome the above-described deficiencies.
    • SUMMARY
  • It is an object of the present invention to provide a method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy.
  • One exemplary embodiment of the present invention is a method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy including: A. establishing a relationship between variations of refinement ability of Al—Ti—C alloy crystal grain and parameters of press process of the Al—Ti—C alloy; setting the parameters of press process and controlling the variation of the refinement ability of the Al—Ti—C alloy crystal grain through controlling a value of the compression ratio.
  • Other novel features and advantages will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of at least one embodiment of the present invention. In the drawings, like reference numerals designate corresponding parts throughout various views, and all the views are schematic.
  • FIG. 1 is a schematic view of continuous casting and tandem rolling manufacturing process employing a method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy according to an exemplary embodiment of the present invention.
  • FIG. 2 is a schematic view of continuous casting and continuous extruding manufacturing process employing the method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy.
  • FIG. 3 is a schematic, plane structural view of part of a rolling mill used for the method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy.
  • FIG. 4 is a schematic, plane structural view of a cast extrusion machine used for the method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy.
    •  DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
  • Reference will now be made to the drawings to describe preferred and exemplary embodiments in detail.
  • It has been proved that during a press process of the Al—Ti—C alloy, a pressure parameter of the press process is directly related with the refinement ability of the Al—Ti—C alloy crystal grain by experiments conducted by inventors of the present application using continuous casting and tandem rolling machines, and continuous casting and continuous extruding machines. The pressure parameter is closely relevant to the refinement ability of the Al—Ti—C alloy crystal grain. The following is a table 1 showing part of the experiments data.
  • TABLE 1
    S1 (mm2) S2 (mm2) D = S 1 S 2 ΔT (° C.) V (m/s) n Δ AA AA1 AA2
     760 70.8 10.7 3 3 7 7.9 170 162
     780 70.8 11.0 3 3 7 8.1 170 162
     800 70.8 11.3 3 3 7 8.3 170 162
     960 70.8 13.6 3 3 7 9.9 170 160
     980 70.8 13.8 3 3 7 10.1 170 160
    1000 70.8 14.1 3 3 7 10.4 170 160
    1160 70.8 16.4 3 3 7 12.0 170 158
    1180 70.8 16.7 3 3 7 12.2 170 158
    1200 70.8 16.9 3 3 7 12.4 170 158
     760 70.8 10.7 4 6 8 10.3 170 160
     780 70.8 11.0 4 6 8 10.6 170 159
     800 70.8 11.3 4 6 8 10.9 170 159
     960 70.8 13.6 4 6 8 13.0 170 157
     980 70.8 13.8 4 6 8 13.3 170 157
    1000 70.8 14.1 4 6 8 13.6 170 156
    1160 70.8 16.4 4 6 8 15.8 170 154
    1180 70.8 16.7 4 6 8 16.0 170 154
    1200 70.8 16.9 4 6 8 16.3 170 154
     760 70.8 10.7 5 9 10 9.9 170 160
     780 70.8 11.0 5 9 10 10.2 170 160
     800 70.8 11.3 5 9 10 10.4 170 160
     960 70.8 13.6 5 9 10 12.5 170 157
     980 70.8 13.8 5 9 10 12.8 170 157
    1000 70.8 14.1 5 9 10 13.0 170 157
    1160 70.8 16.4 5 9 10 15.1 170 155
    1180 70.8 16.7 5 9 10 15.4 170 155
    1200 70.8 16.9 5 9 10 15.7 170 154
  • There is an international standard for the Al—Ti—C alloy production that the final product of the Al—Ti—C alloy should have a diameter of 9.5 mm, that is a sectional area of 70.8 mm2. Contents of table 1 is part of experiments data conducted by continuous casting and tandem rolling machines using a method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy according to an exemplary embodiment of the present invention. The continuous casting and tandem rolling machines includes a rolling mill 30 and a cooling module for Al—Ti—C alloy during a cooling press process. The cooling module includes a temperature sensor for detecting a temperature before the press process of the Al—Ti—C alloy and a temperature after the press process of the Al—Ti—C alloy. The press process of the Al—Ti—C alloy is completed through a cooperation of two rollers 31 of the rolling mill 30, and the Al—Ti—C alloy maintains solid state before, after, and during the press process. During the press process, there are two points of temperatures that one point of the temperature is before the pressure being imposed and the other point of the temperature is after the pressure being released. Before the pressure being imposed, an instantaneous temperature of the Al—Ti—C alloy is about the same as an input temperature, and after the pressure being released, an instantaneous temperature of Al—Ti—C alloy is about the same as an output temperature, therefore it is convenient to detect temperatures of the two points.
  • Referring to FIG. 1, Al—Ti—C alloy melt is put into a crystallize wheel 20 from a crucible 10 thereby forming an Al—Ti—C alloy bar. Thereafter, the bar-shaped Al—Ti—C alloy is put into the rolling mill 30 to conduct press process. An amount of standers of the rolling mill 30 could be 3, 4, 5, 6, 7, 8, 9 or 10. In the illustrated embodiment as shown in FIG. 1, an amount of standers of the rolling mill 30 is 10. Referring to FIG. 3, one stand of the rolling mill 30 is shown in enlarged view. The two rollers 31 of the rolling mill 30 are rolling inward and toward each other. S1 is denoted for the sectional area before press process, and S2 is denoted for the sectional area after the press process. There are at least two temperature sensors provided therein, which are configured to detect the temperature of the Al—Ti—C alloy before the press process and the temperature of the Al—Ti—C alloy after the press process. A scope of temperatures of the Al—Ti—C alloy before the press process is between 300° C.-450° C. The temperature of the Al—Ti—C alloy is raised when being processed in the rolling mill 30. The cooling module is configured for spraying cooling fluid 50 onto the rollers 31 of the rolling mill 30. By controlling a flow rate of the cooling fluid 50, a temperature difference ΔT of the Al—Ti—C alloy before the press process and after the press process can be controlled within a proper range. In the illustrated embodiment, the cooling fluid 50 can be water. The Al—Ti—C alloy comes out from the rolling mill 30 and forms an Al—Ti—C alloy rod.
  • From the data shown in table 1, the relation between the parameters of the press process and the refinement ability variation ΔAA can be conclude as the formula described below:

  • ΔAA=K·D·V/(ΔT·n)
  • In the formula, ΔAA=AA1−AA2, wherein AA1 represents a refinement ability value of the Al—Ti—C alloy before the press process, AA2 represents a refinement ability value of the Al—Ti—C alloy after the press process. K is a constant and can be calculated according the data of table 1 to be 5.13. D represents the compression ratio, and D=S1/S2, S1 is denoted for the sectional area before press process, and S2 is denoted for the sectional area after the press process. AT represents a temperature variation of the Al—Ti—C alloy before the press process and after the press process. V represents a line speed of the outlet, and V=3ΔT−6, V≧1 m/s. Currently the line speed V can reach high to 30 m/s. N represents the number of the standers of the rolling mill 30.
  • The above-mentioned formula ΔAA=K·D·V/(ΔT·n) is applicable to both single stander and a plurality of standers, that is, whether the computation is for total standers or for single stander, the formula is applicable. When n=1, the computation means for the last one of the standers, and the sectional area of the Al—Ti—C alloy products output from the last stander is 70.8 mm2.
  • In the production of the Al—Ti-c alloy, the press process parameters including temperature variation ΔT, line speed of the outlet V, and the amount of the standers are normally fixed, and through controlling on the compression ratio of the press process of the Al—Ti—C alloy, the refinement ability variation ΔAA can be controlled precisely. As shown in table 1, when ΔT=4° C., V=6 m/s, and n=8, by controlling the compression ratio D from 10.7 to 16.9, the refinement ability ΔAA can raised from 10.3 up to 16.3, and when the AA1 value maintains at 170, the AA2 value can be changed from 160 to 154.
  • TABLE 2
    S1 (mm2) S2 (mm2) D = S 1 S 2 ΔT (° C.) V (m/s) n Δ AA AA1 AA2
    760 70.8 10.7 149 3 1 1.1 170 169
    780 70.8 11.0 149 3 1 1.1 170 169
    800 70.8 11.3 149 3 1 1.2 170 169
    960 70.8 13.6 149 3 1 1.4 170 169
    980 70.8 13.8 149 3 1 1.4 170 169
    1000 70.8 14.1 149 3 1 1.5 170 169
    1160 70.8 16.4 149 3 1 1.7 170 168
    1180 70.8 16.7 149 3 1 1.7 170 168
    1200 70.8 16.9 149 3 1 1.8 170 168
    1360 70.8 19.2 149 3 1 2.0 170 168
    1380 70.8 19.5 149 3 1 2.0 170 168
    1400 70.8 19.8 149 3 1 2.0 170 168
    760 70.8 10.7 150 4 1 1.5 170 169
    780 70.8 11.0 150 4 1 1.5 170 168
    800 70.8 11.3 150 4 1 1.5 170 168
    960 70.8 13.6 150 4 1 1.9 170 168
    980 70.8 13.8 150 4 1 1.9 170 168
    1000 70.8 14.1 150 4 1 1.9 170 168
    1160 70.8 16.4 150 4 1 2.2 170 168
    1180 70.8 16.7 150 4 1 2.3 170 168
    1200 70.8 16.9 150 4 1 2.3 170 168
    1360 70.8 19.2 150 4 1 2.6 170 167
    1380 70.8 19.5 150 4 1 2.7 170 167
    1400 70.8 19.8 150 4 1 2.7 170 167
    760 70.8 10.7 149 5 1 1.8 170 168
    780 70.8 11.0 149 5 1 1.9 170 168
    800 70.8 11.3 149 5 1 1.9 170 168
    960 70.8 13.6 149 5 1 2.3 170 168
    980 70.8 13.8 149 5 1 2.4 170 168
    1000 70.8 14.1 149 5 1 2.4 170 168
    1160 70.8 16.4 149 5 1 2.8 170 167
    1180 70.8 16.7 149 5 1 2.9 170 167
    1200 70.8 16.9 149 5 1 2.9 170 167
    1360 70.8 19.2 149 5 1 3.3 170 167
    1380 70.8 19.5 149 5 1 3.4 170 167
    1400 70.8 19.8 149 5 1 3.4 170 167
    760 70.8 10.7 151 6 1 2.2 170 168
    780 70.8 11.0 151 6 1 2.2 170 168
    800 70.8 11.3 151 6 1 2.3 170 168
    960 70.8 13.6 151 6 1 2.8 170 167
    980 70.8 13.8 151 6 1 2.8 170 167
    1000 70.8 14.1 151 6 1 2.9 170 167
    1160 70.8 16.4 151 6 1 3.3 170 167
    1180 70.8 16.7 151 6 1 3.4 170 167
    1200 70.8 16.9 151 6 1 3.5 170 167
    1360 70.8 19.2 151 6 1 3.9 170 166
    1380 70.8 19.5 151 6 1 4.0 170 166
    1400 70.8 19.8 151 6 1 4.0 170 166
  • Contents of table 2 is part of experiments data conducted by continuous casting and continuous extruding machines designed by the applicant and using a method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy according to an exemplary embodiment of the present invention. The continuous casting and continuous extruding machines includes a casting extrusion machine 40 and a cooling module for Al—Ti—C alloy during a cooling press process. The press process of the Al—Ti—C alloy is competed in a roller of the casting extrusion machine 40. The Al—Ti—C alloy maintains solid state before, after, and during the press process. During the press process, there are two points of temperatures that one point of the temperature is before the pressure being imposed and the other point of the temperature is after the pressure being released. Before the pressure being imposed, an instantaneous temperature of the Al—Ti—C alloy is about the same as an friction heat temperature, and after the pressure being released, an instantaneous temperature of Al—Ti—C alloy is about the same as an temperature outputted from the casting extrusion machine 40, therefore it is convenient to detect temperatures of the two points.
  • Referring to FIG. 2, Al—Ti—C alloy melt is put into a crystallize wheel 20 from a crucible 10 thereby forming an Al—Ti—C alloy bar. Thereafter, the bar-shaped Al—Ti—C alloy is put into the casting extrusion machine 40 to conduct press process.
  • Referring to FIG. 2, Al—Ti—C alloy melt is put into a crystallize wheel 20 from a crucible 10 thereby forming an Al—Ti—C alloy bar. Thereafter, the bar-shaped Al—Ti—C alloy is put into the casting extrusion machine 40 to conduct press process. An amount of the standers of the casting extrusion machine 40 is as shown in FIG. 2. Referring to FIG. 4, S1 is denoted for the sectional area before press process, and S2 is denoted for the sectional area after the press process. There are at least two temperature sensors provided therein, which are configured to detect the temperature of the Al—Ti—C alloy before the press process and the temperature of the Al—Ti—C alloy after the press process. The temperature of the Al—Ti—C alloy is raised when being processed in the casting extrusion machine 40 and the Al—Ti—C alloy is altered into semifluid. The cooling module spraying cooling fluid into the casting extrusion machine 40. By controlling a flow rate of the cooling fluid, a temperature difference ΔT of the Al—Ti—C alloy before the press process and after the press process can be controlled within a proper range. In the illustrated embodiment, the cooling fluid can be water. The Al—Ti—C alloy comes out from the casting extrusion machine 40 and forms an Al—Ti—C alloy rod.
  • From the data shown in table 1, the relation between the parameters of the press process and the refinement ability variation ΔAA can be conclude as the formula described below:

  • ΔAA=K·D·V/(ΔT·n)
  • In the formula, ΔAA=AA1−AA2, wherein AA1 represents a refinement ability value of the Al—Ti—C alloy before the press process, AA2 represents a refinement ability value of the Al—Ti—C alloy after the press process. K is a constant and can be calculated according the data of table 1 to be 5.13. D represents the compression ratio, and D=S1/S2, S1 is denoted for the sectional area before press process, and S2 is denoted for the sectional area after the press process. ΔT represents a temperature variation of the Al—Ti—C alloy before the press process and after the press process. V represents a line speed of the outlet. N represents the number of the standers of the casting extrusion machine 40, and n=1.
  • The above-mentioned formula ΔAA=K·D·V/(ΔT·n) is applicable to casting extrusion machine 40 with single stander. When n=1, the computation means for the last one of the standers, and the sectional area of the Al—Ti—C alloy products output from the last stander is 70.8 mm2.
  • In the production of the Al—Ti-c alloy, the press process parameters including temperature variation ΔT, line speed of the outlet V, and the amount of the standers are normally fixed, and through controlling on the compression ratio of the press process of the Al—Ti—C alloy, the refinement ability variation ΔAA can be controlled precisely. As shown in table 2, when ΔT=150° C., V=4 m/s, and n=1, by controlling the compression ratio D from 10.7 to 19.8, the refinement ability ΔAA can raised from 1.5 to 2.7, and when the AA1 value maintains at 170, the AA2 value can be changed from 169 to 167.
  • The method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy has overcome the deficiencies of conventional technique for Al—Ti—C alloy process, and proved that variations of the refinement ability can be controlled through controlling a compression ratio of sectional area of Al—Ti—C alloy. By adopting the present invention, with the parameters of press process, the temperature variation before and after the press process, the line speed of outlet, and the amount of the standers being set fixed, the variations of the refinement ability of Al—Ti—C alloy crystal grain can be precisely controlled by controlling the compression ratio. The greater the variation is, the better the refinement ability of Al—Ti—C alloy crystal grain is with a certain AA value before the press process and a lesser AA value after the press process.
  • It is to be understood, however, that even though numerous characteristics and advantages of exemplary and preferred embodiments have been set out in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Claims (1)

1. A method for controlling variations of Al—Ti—C alloy crystal grain refinement ability through controlling a compression ratio of sectional area of Al—Ti—C alloy comprising:
a. establishing a relationship between variations of refinement ability of Al—Ti—C alloy crystal grain and parameters of press process of the Al—Ti—C alloy:

ΔAA=K·D·V/(ΔT·n)
wherein ΔAA=AA1−AA2, AA1 represents a refinement ability value of the Al—Ti—C alloy before the press process, AA2 representing a refinement ability value of the Al—Ti—C alloy after the press process, K being a constant, wherein D=S1/S2,S1 being denoted for the sectional area before press process, and S2 being denoted for the sectional area after the press process, wherein ΔT represents a temperature variation of the Al—Ti—C alloy before the press process and after the press process, V representing a line speed of an outlet, n representing a number of the standers of process machine; and
b. setting the parameters V, ΔT, and n, and controlling the ΔAA value through controlling a value of the compression ratio D.
US12/867,195 2010-02-05 2010-05-10 Method for controlling variations of al-ti-c alloy grain refinement ability through controlling compression ratio Abandoned US20110192503A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN2010101100600A CN101838783B (en) 2010-02-05 2010-02-05 Method for controlling variable quantity of grain refinement capability of TiAl carbon alloy by compression ratio control
CN201010110060.0 2010-02-05
PCT/CN2010/072550 WO2011022985A1 (en) 2010-02-05 2010-05-10 Method for controlling variation of grain refining ability of al-ti-c alloy by controlling compression ratio

Publications (1)

Publication Number Publication Date
US20110192503A1 true US20110192503A1 (en) 2011-08-11

Family

ID=42742455

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/867,195 Abandoned US20110192503A1 (en) 2010-02-05 2010-05-10 Method for controlling variations of al-ti-c alloy grain refinement ability through controlling compression ratio

Country Status (6)

Country Link
US (1) US20110192503A1 (en)
EP (1) EP2357263B1 (en)
CN (1) CN101838783B (en)
ES (1) ES2519167T3 (en)
GB (1) GB2479853B (en)
WO (1) WO2011022985A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102676957A (en) * 2012-03-14 2012-09-19 河南理工大学 Anti-corrosion aluminum alloy for complex heat conduction system and production method thereof
CN115341116A (en) * 2021-05-12 2022-11-15 中国科学院过程工程研究所 Aluminum-titanium-carbon-nitrogen intermediate alloy refiner and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2021048C1 (en) * 1993-02-01 1994-10-15 Новолипецкий металлургический комбинат Method of preparing rolls for operation
US5481086A (en) * 1994-08-09 1996-01-02 Dynamic Systems Inc. High temperature deformable crucible for use with self-resistively heated specimens
CN1290760A (en) * 2000-10-20 2001-04-11 山东大学 Method for preparing aluminium-titanium-carbon intermediate alloy
WO2006131129A1 (en) * 2005-06-07 2006-12-14 Technische Universität Clausthal Aluminium plain bearing alloy
US20080075624A1 (en) * 2005-05-30 2008-03-27 Osaka University Magnesium alloy sheet processing method and magnesium alloy sheet
US8286457B2 (en) * 2010-02-05 2012-10-16 Shenzhen Sunxing Light Alloys Materials Co., Ltd. Method for controlling variations of Al—Ti—B alloy grain refinement ability through controlling compression ratio

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612073A (en) * 1984-08-02 1986-09-16 Cabot Corporation Aluminum grain refiner containing duplex crystals
SE8702149L (en) * 1987-05-22 1988-11-23 Baeckerud Innovation Ab ALUMINIUMFOERLEGERING
US5100488A (en) * 1988-03-07 1992-03-31 Kb Alloys, Inc. Third element additions to aluminum-titanium master alloys
GB2299099A (en) * 1995-03-18 1996-09-25 Christopher Duncan Mayes Process for producing grain refining master alloys.
CA2361484A1 (en) * 2000-11-10 2002-05-10 Men Glenn Chu Production of ultra-fine grain structure in as-cast aluminum alloys
KR100526302B1 (en) * 2003-07-04 2005-11-08 주식회사 Slm Additive for miniaturing crystallization of aluminium-silicon alloy
CN100402681C (en) * 2006-09-05 2008-07-16 中国铝业股份有限公司 Preparation method of Al-TiC master alloy

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2021048C1 (en) * 1993-02-01 1994-10-15 Новолипецкий металлургический комбинат Method of preparing rolls for operation
US5481086A (en) * 1994-08-09 1996-01-02 Dynamic Systems Inc. High temperature deformable crucible for use with self-resistively heated specimens
CN1290760A (en) * 2000-10-20 2001-04-11 山东大学 Method for preparing aluminium-titanium-carbon intermediate alloy
US20080075624A1 (en) * 2005-05-30 2008-03-27 Osaka University Magnesium alloy sheet processing method and magnesium alloy sheet
WO2006131129A1 (en) * 2005-06-07 2006-12-14 Technische Universität Clausthal Aluminium plain bearing alloy
US20100221141A1 (en) * 2005-06-07 2010-09-02 Babette Tonn Aluminum plain bearing alloy
US8286457B2 (en) * 2010-02-05 2012-10-16 Shenzhen Sunxing Light Alloys Materials Co., Ltd. Method for controlling variations of Al—Ti—B alloy grain refinement ability through controlling compression ratio

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Machine translation of CN 1290760, 2001. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102676957A (en) * 2012-03-14 2012-09-19 河南理工大学 Anti-corrosion aluminum alloy for complex heat conduction system and production method thereof
CN115341116A (en) * 2021-05-12 2022-11-15 中国科学院过程工程研究所 Aluminum-titanium-carbon-nitrogen intermediate alloy refiner and preparation method thereof

Also Published As

Publication number Publication date
EP2357263B1 (en) 2014-09-03
ES2519167T3 (en) 2014-11-06
GB2479853B (en) 2012-02-08
GB201114921D0 (en) 2011-10-12
CN101838783B (en) 2012-01-04
CN101838783A (en) 2010-09-22
GB2479853A (en) 2011-10-26
WO2011022985A1 (en) 2011-03-03
EP2357263A1 (en) 2011-08-17
EP2357263A4 (en) 2012-12-05

Similar Documents

Publication Publication Date Title
CN104588430B (en) Non-ferrous metal continuous casting-rolling-extrusion integral processing forming device and method
CN104874758B (en) Continuous casting weight pressing control method
CN104070070B (en) Control method for improving rolling force of precisely rolled strip steel and thickness precision through tension compensation
CN107617647B (en) Method for producing hot-rolled strip steel with thickness less than or equal to 1.2mm by continuous casting and rolling of sheet billet
CN105177475B (en) A kind of method for producing 8021 alloy double zero foil aluminum foil stocks
CN109351896A (en) A kind of rolling method of super-large diameter 6061 aluminum alloy special-shaped section ring
JPH0366457A (en) Apparatus for controlling twin roll type continuous casting machine
US20110192503A1 (en) Method for controlling variations of al-ti-c alloy grain refinement ability through controlling compression ratio
US8286457B2 (en) Method for controlling variations of Al—Ti—B alloy grain refinement ability through controlling compression ratio
JPS58205655A (en) Method and device for producing thin strip quickly cooled by twin rolls
CN103143584B (en) A kind of device for the preparation of structure and properties uniform alloy
CN113245485A (en) Metal ring rolling process
CN101554650A (en) Method for controlling online calibration of pulling-straightening roller gap under light pressure of bloom caster
US20150258592A1 (en) Width-altering system for strip-shaped rolled material
CN113083906B (en) Production control method for reducing deformed steel bar detection waste
CN118341844B (en) A device and method for detecting wave patterns in hot-rolled strip
US5435161A (en) Extrusion method utilizing variable billet preheat temperature
CN102400072B (en) Method for producing magnesium and magnesium alloy plates
CN101775564B (en) Method for controlling variation of grain refinement ability of aluminum-titanium-boron alloy during pressure processing
CN116550749A (en) Rolling method for controlling negative deviation of bar
JP3611803B2 (en) Method for isobaric extrusion of metal material and extrusion apparatus
CN105642678A (en) Roll gap dynamic setting method
CN114054513A (en) A method and device for controlling strip tension in a double-frame skin pass mill
US20090136379A1 (en) Manufacturing method for wide-range fine-grained magnesium alloy thin-sheet material
CN101209460B (en) Method for realizing stable control of elongation by using thickness control system

Legal Events

Date Code Title Description
AS Assignment

Owner name: SUN XING CHEMICAL & METALLURGICAL MATERIALS (SHENZ

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, XUEMIN;YE, QINGDONG;LI, JIANGUO;AND OTHERS;REEL/FRAME:024826/0202

Effective date: 20100810

AS Assignment

Owner name: SHENZHEN SUNXING LIGHT ALLOYS MATERIALS CO., LTD.,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SUN XING CHEMICAL & METALLURGICAL MATERIALS (SHENZHEN) CO., LTD.;REEL/FRAME:028950/0553

Effective date: 20120910

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION