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Method for producing a welded joint

A welding connection, welding rod technology, applied in welding/welding/cutting items, welding medium, welding equipment, etc., can solve the problem of ineffective application of fusion welding method

Active Publication Date: 2015-01-14
MAGNA E CAR SYSEMS & OG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] For such high-strength aluminum alloys (such as 7075 alloy), it is known that fusion welding methods (such as arc welding) cannot be effectively applied due to the copper content in the alloy
Therefore, usually more expensive joining methods are applied for these metals

Method used

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Embodiment Construction

[0011] Developments of the invention are given in the subclaims, the description and the drawings.

[0012] The high-strength copper-containing aluminum alloy is preferably 7075 aluminum alloy, so that the other beneficial properties of this alloy can be used for parts that are still easy to weld.

[0013] The high-strength aluminum alloy of the first metal may also be 7020 aluminum alloy.

[0014] The second metal may be an aluminum alloy, and in particular, the second metal may also be a high-strength copper-free aluminum alloy.

[0015] The second metal is preferably 7075 aluminum alloy or 7020 aluminum alloy.

[0016] The second metal can also be a conventional steel sheet, so that the connection according to the invention can be produced, for example, between a 7075 aluminum alloy and a conventional sheet steel. For this purpose, the thin steel sheet is usually galvanized beforehand.

[0017] In order to achieve the best welding results, it is preferred to use electrod...

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Abstract

A method for producing a welded joint between a high-strength aluminium alloy with a copper proportion as a first metal and a second metal, in which the welded joint is produced by CMT welding.

Description

technical field [0001] The invention relates to a method for forming a welded connection between a high-strength copper-containing aluminum alloy (hochfeste Aluminumlegierung mit Kupferanteil) as a first metal and a second metal. Background technique [0002] It is known that such high strength aluminum alloys (such as 7075 alloy) cannot be efficiently applied by fusion welding methods (eg arc welding) due to the copper content of the alloy. Therefore, generally more expensive joining methods are applied for these metals. [0003] For example US 5769306 discloses a friction welding method specifically for such alloys. [0004] JPH1147959 A discloses friction stir welding (Rührreibschweiβen) for high-strength aluminum alloys. [0005] Especially in the automobile manufacturing industry, it is desirable to manufacture lighter car bodies by, for example, joining steel with high-strength aluminum, and to replace heavier steel parts with high-strength aluminum parts. Such high...

Claims

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Application Information

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IPC IPC(8): B23K9/173
CPCB23K35/286B23K9/232B23K9/164B23K9/173B23K9/23B23K2203/10B23K2103/10
Inventor W·卡纳
Owner MAGNA E CAR SYSEMS & OG
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