EP2357263A1 - Procédé de régulation de la variation de la capacité de raffinage des grains de l'alliage al-ti-c par régulation du taux compression - Google Patents

Procédé de régulation de la variation de la capacité de raffinage des grains de l'alliage al-ti-c par régulation du taux compression Download PDF

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Publication number
EP2357263A1
EP2357263A1 EP10723902A EP10723902A EP2357263A1 EP 2357263 A1 EP2357263 A1 EP 2357263A1 EP 10723902 A EP10723902 A EP 10723902A EP 10723902 A EP10723902 A EP 10723902A EP 2357263 A1 EP2357263 A1 EP 2357263A1
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EP
European Patent Office
Prior art keywords
alloy
press process
controlling
compression ratio
crystal grain
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.)
Granted
Application number
EP10723902A
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German (de)
English (en)
Other versions
EP2357263B1 (fr
EP2357263A4 (fr
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.)
Sun Xing Chemical and Metallurgical Materials (Shenzhen) Co Ltd
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Sun Xing Chemical and Metallurgical Materials (Shenzhen) Co Ltd
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Publication of EP2357263A1 publication Critical patent/EP2357263A1/fr
Publication of EP2357263A4 publication Critical patent/EP2357263A4/fr
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    • 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.
  • 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. 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 temperature sensors 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 ⁇ 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 50 can be water.
  • the Al-Ti-C alloy comes out from the rolling mill 30 and forms an Al-Ti-C alloy rod.
  • 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.
  • 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.
  • 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. By controlling a flow rate of the cooling fluid, 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 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 4m/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.

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  • 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)
  • Metal Rolling (AREA)
  • Extrusion Of Metal (AREA)
EP10723902.2A 2010-02-05 2010-05-10 Procédé de régulation de la variation de la capacité de raffinage des grains de l'alliage al-ti-c par régulation du taux compression Not-in-force EP2357263B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010101100600A CN101838783B (zh) 2010-02-05 2010-02-05 通过控制压缩比来控制铝钛碳合金晶粒细化能力的变化量的方法
PCT/CN2010/072550 WO2011022985A1 (fr) 2010-02-05 2010-05-10 Procédé de régulation de la variation de la capacité de raffinage des grains de l'alliage al-ti-c par régulation du taux compression

Publications (3)

Publication Number Publication Date
EP2357263A1 true EP2357263A1 (fr) 2011-08-17
EP2357263A4 EP2357263A4 (fr) 2012-12-05
EP2357263B1 EP2357263B1 (fr) 2014-09-03

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EP10723902.2A Not-in-force EP2357263B1 (fr) 2010-02-05 2010-05-10 Procédé de régulation de la variation de la capacité de raffinage des grains de l'alliage al-ti-c par régulation du taux compression

Country Status (6)

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

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Publication number Priority date Publication date Assignee Title
CN102676957B (zh) * 2012-03-14 2014-01-15 河南理工大学 用于复杂导热系统的耐蚀铝合金及其生产方法
CN115341116B (zh) * 2021-05-12 2023-04-18 中国科学院过程工程研究所 一种铝钛碳氮中间合金细化剂及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988009392A1 (fr) * 1987-05-22 1988-12-01 Bäckerud Innovation Ab Procede pour la production d'alliages-mere et alliages-mere pour traitement de recuit d'affinage structural de bains d'aluminium en fusion
GB2299099A (en) * 1995-03-18 1996-09-25 Christopher Duncan Mayes Process for producing grain refining master alloys.
CN1290760A (zh) * 2000-10-20 2001-04-11 山东大学 一种铝－钛－碳中间合金的制备方法
EP1205567A2 (fr) * 2000-11-10 2002-05-15 Alcoa Inc. Production de structure de grains ultrafins dans les alliages d'aluminium bruts de coulée
CN1912160A (zh) * 2006-09-05 2007-02-14 中国铝业股份有限公司 一种Al－Ti－C中间合金的制备方法

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US4612073A (en) * 1984-08-02 1986-09-16 Cabot Corporation Aluminum grain refiner containing duplex crystals
US5100488A (en) * 1988-03-07 1992-03-31 Kb Alloys, Inc. Third element additions to aluminum-titanium master alloys
RU2021048C1 (ru) * 1993-02-01 1994-10-15 Новолипецкий металлургический комбинат Способ подготовки прокатных валков к эксплуатации
US5481086A (en) * 1994-08-09 1996-01-02 Dynamic Systems Inc. High temperature deformable crucible for use with self-resistively heated specimens
KR100526302B1 (ko) * 2003-07-04 2005-11-08 주식회사 Slm 알루미늄-규소 합금의 결정립 미세화제
JP4734578B2 (ja) * 2005-05-30 2011-07-27 国立大学法人大阪大学 マグネシウム合金板材の加工方法およびマグネシウム合金板材
US20100221141A1 (en) * 2005-06-07 2010-09-02 Babette Tonn Aluminum plain bearing alloy
CN101768708B (zh) * 2010-02-05 2012-05-23 深圳市新星轻合金材料股份有限公司 通过控制压缩比来控制铝钛硼合金晶粒细化能力的变化量的方法

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Publication number Priority date Publication date Assignee Title
WO1988009392A1 (fr) * 1987-05-22 1988-12-01 Bäckerud Innovation Ab Procede pour la production d'alliages-mere et alliages-mere pour traitement de recuit d'affinage structural de bains d'aluminium en fusion
GB2299099A (en) * 1995-03-18 1996-09-25 Christopher Duncan Mayes Process for producing grain refining master alloys.
CN1290760A (zh) * 2000-10-20 2001-04-11 山东大学 一种铝－钛－碳中间合金的制备方法
EP1205567A2 (fr) * 2000-11-10 2002-05-15 Alcoa Inc. Production de structure de grains ultrafins dans les alliages d'aluminium bruts de coulée
CN1912160A (zh) * 2006-09-05 2007-02-14 中国铝业股份有限公司 一种Al－Ti－C中间合金的制备方法

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Title
FUNG-CHI CHANG, WENG-SING HWANG, CHUNG-HAM LEE, CHUN-FU WU, JIN-BIN YANG: "FORGING CONDITION FOR REMOVING POROSITIES IN THE HYBRID CASTING AND FORGING PREOCESS OF 7075 ALUMINUM ALLOY CASTING", MATERIALS TRANSACTIONS/JAPAN INSTITUTE OF METALS, vol. 45, no. 6, 1 July 2004 (2004-07-01), pages 1886-1890, XP002685788, JAPAN *
LI JIAN-GUO, HUANG MIN, MA MO, YE WEI, LIU DONG-YU, SONG DONG-MING, BAI BING-ZHE, FANG HONG-SHENG: "PERFORMANCE COMPARISON OF ALTIC AND ALTIB MASTER ALLOYS IN GRAIN REFINEMENT OF COMMERCIAL AND HIGH PURITY ALUMINUM", TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, vol. 16, 1 June 2006 (2006-06-01), pages 242-253, XP002685789, China *
See also references of WO2011022985A1 *

Also Published As

Publication number Publication date
GB2479853A (en) 2011-10-26
CN101838783A (zh) 2010-09-22
GB201114921D0 (en) 2011-10-12
EP2357263B1 (fr) 2014-09-03
ES2519167T3 (es) 2014-11-06
US20110192503A1 (en) 2011-08-11
GB2479853B (en) 2012-02-08
EP2357263A4 (fr) 2012-12-05
WO2011022985A1 (fr) 2011-03-03
CN101838783B (zh) 2012-01-04

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