WO2004092432A1 - プレス成形性および連続抵抗スポット溶接性に優れたアルミニウム合金板およびその製造方法 - Google Patents
プレス成形性および連続抵抗スポット溶接性に優れたアルミニウム合金板およびその製造方法 Download PDFInfo
- Publication number
- WO2004092432A1 WO2004092432A1 PCT/JP2004/005258 JP2004005258W WO2004092432A1 WO 2004092432 A1 WO2004092432 A1 WO 2004092432A1 JP 2004005258 W JP2004005258 W JP 2004005258W WO 2004092432 A1 WO2004092432 A1 WO 2004092432A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- less
- aluminum alloy
- resistance spot
- spot weldability
- press formability
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/003—Aluminium alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0605—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two belts, e.g. Hazelett-process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
- C22F1/043—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 of alloys with silicon as the next major constituent
-
- 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
- C22F1/05—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 of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
Definitions
- the present invention relates to an outer panel or other structural material of a home appliance or an automobile for assembling a product by resistance spot welding after or before press forming, which is excellent in press formability and continuous resistance spot weldability. And a method of manufacturing the same.
- Patent Document 1 Japanese Patent Application Laid-Open No. 62-207851 discloses a method for producing a rolled plate such as a pod sheet having good moldability.
- Claim 4 contains Si: 0.4 to 2.5%, Mg: 0.1 to 1.2%, Cu: 1.5% or less, Zn: 2.5% or less, Contains one or more selected from the group consisting of Cr: 0.3% or less, Mn: 0.6% or less, Zr: 0.3% or less, with the balance being A1 and inevitable
- a method for manufacturing a rolled aluminum alloy sheet comprising continuously forming a molten aluminum alloy comprising impurities into a sheet having a thickness of 3 to 15 mm, performing cold rolling, solution treatment, and quenching.
- Patent Document 2 Japanese Unexamined Patent Application Publication No. 2001-262264 discloses, as a material for an automobile panel or the like having good bending properties, claims 1 to 3 of the same publication, As%, Mg: 0.1 to 2.0% s S i: 0.1 to 2.0%, Fe: 0.1 to 1.5% and the balance A 1 as essential components A1-Mg-Si-based A1 alloy plate with excellent toughness and bendability, with a maximum particle size of Fe / Si-based compound of 5 / im or less and an average crystal grain size of 30 ⁇ or less In claim 2, as mass%, Mg: 0.1 to 2.
- G% S i 0.1 to 2.0%, Fe: 0.1 to 1.5%, Cu: 2.0 % Or less and the balance A 1 as essential components, the maximum particle size of Fe, Si, and Cu compounds is 5 ⁇ m or less, and the average crystal grain size is 30 / zm or less.
- a 1 -Mg-S according to claim 1 or claim 2 containing at least one component selected from the group consisting of: V: 0.3% or less; Ti: 0.03% or less. There is description of i-system A1 alloy plate.
- Patent Document 1 Japanese Patent Application Laid-Open No. 62-207851
- Patent Document 1 Japanese Patent Application Laid-Open No. 62-207851
- the size of the intermetallic compound to be crystallized is small, and as a result, a sufficient amount of a relatively large compound that affects the crystal grain size during recrystallization cannot be obtained. And the number of continuous resistance spot welding is small.
- Patent Document 2 Japanese Patent Application Laid-Open No. 2000-262264
- a continuous production method employs a continuous production method and solidifies at a cooling rate of 10 ° C./sec or more.
- a maximum cooling rate of 30 ° C / sec is adopted. Since the cooling rate is slow, the size of the intermetallic compound that crystallizes during the production is large, and as a result, a sufficient amount of a relatively large compound that affects the crystal grain size during recrystallization cannot be obtained, and after the solution treatment The grain size is large and the pressability is poor, and the number of continuous spots in resistance spot welding is small.
- An object of the present invention is to provide an aluminum alloy sheet excellent in press formability and continuous resistance spot weldability, and a method for producing the same.
- the present inventors can optimize the size and number of intermetallic compounds to be crystallized if the melt cooling rate during solidification is set to an optimum range in an appropriate composition range.
- Aluminum alloy The present invention was completed on the basis of the finding that the sheet was excellent in press formability and continuous resistance spot weldability.
- Mg 0.3 to 1.0%
- Si 0.3 to 1.2%
- Fe 0.10 to 1.0%
- Mn Contain 0.05-0.5%
- the balance consists of A1 and unavoidable impurities
- the average recrystallized grain size is less than 25 ⁇
- the recrystallized grain size is fine, and the number of compounds having the optimum size is large, so that press formability and continuous resistance spot weldability are excellent.
- the strength is further improved.
- the recrystallized grain size is fine and the strength is further improved.
- Ti at 0.05% or less Ti at 0.05% or less and B at 0.01% or less, it is possible to more reliably prevent structural cracks during manufacturing.
- a molten alloy having the above composition is poured into a rotating belt ⁇ which is forcedly opposed to each other and cooled at a cooling rate of 40 to 90 ° C. during solidification of the molten metal.
- an aluminum alloy sheet having excellent press formability and continuous spot weldability and a method for producing the same are provided.
- Mg and Si are added for improving the strength and imparting press formability. If the content is less than the lower limit, the effect is small, and if the content exceeds the upper limit, the pressability is inferior.
- Cu is added to further improve the strength and press formability. If it is less than the lower limit, the effect is small, and if it exceeds the upper limit, the corrosion resistance is reduced.
- Z r promotes crystallization of an intermetallic compound of A 1 3 Z r, increases the further number crystallized out recrystallization number nucleus compound number of a particular size, the size of the recrystallized grains order to make fine To improve the press formability by fine recrystallization. If the amount is less than the lower limit, the effect is small, and if the amount exceeds the upper limit, coarse crystals are formed and the rolling property is reduced.
- T i 0.05% or less, or T i: 0.05% or less; B: 0.01% or less]
- T i 0.
- B 0.01% or less
- a combination of Ti and Ti in the above range may be added.
- the effect is synergistic when the content is combined with Ti.
- the lower limit of Ti is 0.002% or more
- the lower limit of B is 0.0005% or more.
- the unavoidable impurities come from aluminum ingots, returned materials, smelting jigs, etc., and Cr, Ni, Zn, Ga, and V are typical elements. Since Cr is added to prevent the stress corrosion cracking of the A1-Mg alloy, it is easy to mix from the returned material, but in the present invention, it is acceptable if it is less than 0.3%. Ni is less than 0.2%, 0 & 1 is less than 0.1% each, and unavoidable impurities other than those mentioned above should be suppressed to less than 0.3% in order to maintain formability in total. It is.
- recrystallized grains after the solution treatment are refined, they can be formed without breakage even if the workability of the press is increased and the drawing height is increased, and press formability is improved. If the upper limit is exceeded, the effect will be reduced and the skin after pressing will not be beautifully finished.
- Preferred recrystallized grain sizes are 20 ⁇ or less and 15 Zm or less.
- the seizure phenomenon caused by the reaction between the copper electrode and A 1 is prevented when resistance spot welding is continuously performed, and the number of electrode replacement operations is reduced. Productivity is improved.
- the preferred number of compounds is 600,000 Zmm 2 or more.
- a slab with a thickness of 5 to 10 mm is poured by pouring into a rotating belt that is forcedly opposed to each other at the time of fabrication, and then solidifying at a cooling speed of 40 to 90 ° C / sec. The slab is drawn out from the counter pouring side and rolled directly or wound into a coil.
- twin rolls are used to pour molten metal between confronting rotating rolls that are forced to cool, quench the molten metal on the roll surface, and continuously take out a slab thinner than the non-poured side.
- Casting method twin-belt casting method in which molten metal is poured between rotating belts that have been forcedly cooled relative to each other, the molten metal is rapidly cooled on the belt surface, and slabs with a smaller thickness than the non-poured side are continuously taken out.
- the cooling rate during solidification is considerably higher at 300 ° C./sec or more, and the compound size in the obtained slab is small, so that the plate of the present invention cannot be obtained.
- twin belt manufacturing method the molten metal is rapidly cooled on the belt surface, but the cooling rate is not as high as in the twin roll manufacturing method.
- the present invention adjusts the manufacturing conditions of the twin-belt manufacturing method to set the cooling rate of the molten metal at 40 to 90 ° C./sec (at a position of 1/4 of the plate thickness), and the equivalent circle diameter is 1 to 6 ⁇ m.
- the intermetallic compound is formed at a concentration of 5,000 / mm 2 or more. If the cooling rate of the molten metal is less than 40 ° C / sec, coarse compounds are crystallized and the number of compounds in the above specified size range is insufficient, and the recrystallized grains do not become finer. I can't. On the other hand, when the temperature exceeds 90 ° C / sec, fine compounds are crystallized, and the number of compounds in the specified size range is insufficient, so that a plate with similarly refined recrystallized grains cannot be obtained.
- the slab obtained by the twin belt manufacturing method is cold-rolled into a plate having a desired thickness, solution-treated, and recrystallized.
- annealing may be performed during the cold rolling, but the rolling ratio of the rolled sheet to be subjected to the solution treatment is 55% or more.
- the solution treatment is performed in a continuous annealing furnace.
- the heating temperature is 500 ° C or more, and the cooling rate to 100 ° C is 1 ° C / sec or more.
- the size of the recrystallized grains of the solution-treated rolled sheet is determined by the combination of the size and number of the intermetallic compound and the rolling rate, and the recrystallized grains having an average recrystallized grain size of 25; um or less.
- a plate having the following formula is obtained. Such a plate can be used as is or at 1-5% for flatness. It can be put to practical use through a skin pass or leveler.
- Blank 1 1 2.5 mm
- the recrystallized grain size was measured by a cross force method.
- the examples according to the present invention have a high cylindrical drawing height and excellent press formability, and also have a large number of continuous hit points and excellent spot weldability.
- the cylindrical drawing height is low and the press formability is poor, and the intermetallic compound having a circle equivalent diameter of 16 ⁇ m has a small amount of crystal.
- the comparative example having a large particle size (sample No. 14 1920) had a small number of continuous spots and was inferior in continuous resistance spot weldability.
- the aluminum alloy plate according to the present invention has also excellent in continuous resistance spot weldability, the surface of the press-formed body is beautifully finished, and since it can be assembled continuously by resistance spot welding, the productivity is excellent, and it is a 600-based alloy plate. It has excellent industrial value, for example, its strength is improved by baking after application of paint, etc., and it can be widely used for applications such as body sheets of automobiles.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04727133A EP1614760A4 (en) | 2003-04-15 | 2004-04-13 | ALUMINUM ALLOY PLATE WITH EXCELLENT PRESS-FORMABILITY AND POINT WELDABILITY WITH CONTINUOUS RESISTANCE AND MANUFACTURING METHOD THEREFOR |
CA002521006A CA2521006A1 (en) | 2003-04-15 | 2004-04-13 | Aluminum alloy plate excellent in press formability and continuous resistance spot weldability and method for production thereof |
US10/553,316 US20070062618A1 (en) | 2003-04-15 | 2004-04-13 | Aluminum alloy plate excellent in press formability and continuous resistance spot weldability and method for production thereof |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003110732 | 2003-04-15 | ||
JP2003-110732 | 2003-04-15 | ||
JP2004048360A JP4379149B2 (ja) | 2003-04-15 | 2004-02-24 | プレス成形性および連続抵抗スポット溶接性に優れたアルミニウム合金板およびその製造方法 |
JP2004-048360 | 2004-02-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004092432A1 true WO2004092432A1 (ja) | 2004-10-28 |
Family
ID=33302213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/005258 WO2004092432A1 (ja) | 2003-04-15 | 2004-04-13 | プレス成形性および連続抵抗スポット溶接性に優れたアルミニウム合金板およびその製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070062618A1 (ja) |
EP (1) | EP1614760A4 (ja) |
JP (1) | JP4379149B2 (ja) |
KR (1) | KR100710795B1 (ja) |
CA (1) | CA2521006A1 (ja) |
TW (1) | TW200504226A (ja) |
WO (1) | WO2004092432A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200530406A (en) * | 2003-12-26 | 2005-09-16 | Nippon Light Metal Co | Method for producing Al-Mg-Si based aluminum alloy plate excellent in bake-hardenability |
WO2006126281A1 (en) * | 2005-05-25 | 2006-11-30 | Nippon Light Metal Co., Ltd. | Aluminum alloy sheet and method for manufacturing the same |
EP2072628B1 (en) * | 2007-12-19 | 2017-10-18 | ST Extruded Products Germany GmbH | High strength crash resistant aluminium alloy |
EP2553131B1 (en) | 2010-03-30 | 2019-05-08 | Norsk Hydro ASA | High temperature stable aluminium alloy |
JP2012177171A (ja) * | 2011-02-28 | 2012-09-13 | Sumitomo Light Metal Ind Ltd | リチウムイオン電池電極集電体用アルミニウム合金箔およびその製造方法 |
KR20130058998A (ko) | 2011-11-28 | 2013-06-05 | 현대자동차주식회사 | 연속주조용 알루미늄합금 및 그 제조방법 |
KR101581607B1 (ko) * | 2011-12-02 | 2015-12-30 | 가부시키가이샤 유에이씨제이 | 알루미늄 합금재를 이용한 열교환기용 핀재와 이를 포함하는 알루미늄 합금 구조체 |
MY164145A (en) * | 2012-01-27 | 2017-11-30 | Uacj Corp | Aluminum alloy material for heat exchanger fin, manufacturing method for same, and heat exchanger using the said aluminum alloy material |
TWI507532B (zh) * | 2013-03-14 | 2015-11-11 | Superalloyindustrial Co Ltd | High strength aluminum magnesium silicon alloy and its manufacturing process |
DE102015013540A1 (de) * | 2015-10-19 | 2017-04-20 | Trimet Aluminium Se | Aluminiumlegierung |
CN107022698A (zh) * | 2016-02-02 | 2017-08-08 | 中兴通讯股份有限公司 | 一种高导热压铸铝合金及其制备方法 |
EP3497256B1 (de) * | 2016-08-15 | 2020-07-01 | Hydro Aluminium Rolled Products GmbH | Aluminiumlegierung und aluminiumlegierungsband für den fussgängeraufprallschutz |
EP3981893A1 (de) | 2020-10-07 | 2022-04-13 | AMAG rolling GmbH | Platte aus einer gewalzten aluminiumlegierung und herstellung solch einer platte |
CN117467872B (zh) * | 2023-12-27 | 2024-03-19 | 中铝材料应用研究院有限公司 | 具有高电极打点数的6000系列铝合金板材及其制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05261562A (ja) * | 1992-03-18 | 1993-10-12 | Sumitomo Light Metal Ind Ltd | A1−Mg−Si系アルミニウム合金材料のスポット溶接法 |
JP2000144294A (ja) * | 1998-11-12 | 2000-05-26 | Kobe Steel Ltd | プレス成形性およびヘム加工性に優れたアルミニウム合金板 |
JP2001262264A (ja) * | 2000-03-21 | 2001-09-26 | Kobe Steel Ltd | 靱性および曲げ性に優れたAl−Mg−Si系Al合金板 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3177071B2 (ja) * | 1993-07-26 | 2001-06-18 | 富士写真フイルム株式会社 | 平版印刷版支持体 |
US6344096B1 (en) * | 1995-05-11 | 2002-02-05 | Alcoa Inc. | Method of producing aluminum alloy sheet for automotive applications |
JPH10152762A (ja) * | 1996-11-21 | 1998-06-09 | Furukawa Electric Co Ltd:The | Di加工性に優れるアルミニウム合金硬質板の製造方法 |
JP2000262264A (ja) * | 1999-03-18 | 2000-09-26 | Daiichi Reito:Kk | 冷霧式解凍方法と冷霧式解凍装置 |
-
2004
- 2004-02-24 JP JP2004048360A patent/JP4379149B2/ja not_active Expired - Fee Related
- 2004-04-08 TW TW093109748A patent/TW200504226A/zh not_active IP Right Cessation
- 2004-04-13 WO PCT/JP2004/005258 patent/WO2004092432A1/ja not_active Application Discontinuation
- 2004-04-13 EP EP04727133A patent/EP1614760A4/en not_active Withdrawn
- 2004-04-13 CA CA002521006A patent/CA2521006A1/en not_active Abandoned
- 2004-04-13 US US10/553,316 patent/US20070062618A1/en not_active Abandoned
- 2004-04-13 KR KR1020057018560A patent/KR100710795B1/ko not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05261562A (ja) * | 1992-03-18 | 1993-10-12 | Sumitomo Light Metal Ind Ltd | A1−Mg−Si系アルミニウム合金材料のスポット溶接法 |
JP2000144294A (ja) * | 1998-11-12 | 2000-05-26 | Kobe Steel Ltd | プレス成形性およびヘム加工性に優れたアルミニウム合金板 |
JP2001262264A (ja) * | 2000-03-21 | 2001-09-26 | Kobe Steel Ltd | 靱性および曲げ性に優れたAl−Mg−Si系Al合金板 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1614760A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1614760A1 (en) | 2006-01-11 |
TW200504226A (en) | 2005-02-01 |
KR20050118299A (ko) | 2005-12-16 |
TWI299755B (ja) | 2008-08-11 |
EP1614760A4 (en) | 2006-10-18 |
JP2004332106A (ja) | 2004-11-25 |
US20070062618A1 (en) | 2007-03-22 |
JP4379149B2 (ja) | 2009-12-09 |
CA2521006A1 (en) | 2004-10-28 |
KR100710795B1 (ko) | 2007-04-25 |
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