Aluminum alloy piece welding method

A welding method and aluminum alloy technology, applied in welding equipment, welding accessories, welding/welding/cutting items, etc., can solve problems such as weld cracks, reduce dust pollution, have good toughness, and improve repair effects

Active Publication Date: 2016-07-06
HENAN PINGGAO ELECTRIC +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a welding method for aluminum alloy parts, aiming to solve the problem that weld cracks are prone to occur after welding aluminum alloy parts in the prior art

Method used

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  • Aluminum alloy piece welding method
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  • Aluminum alloy piece welding method

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Embodiment Construction

[0025] Embodiment of the welding method of aluminum alloy parts in the present invention: the welding method is a mixed welding method of dissimilar welding wires for key structural parts of aluminum alloys used in high-voltage electrical products, and is especially suitable for plate thicknesses ranging from 30 mm to 90 mm and welding angle heights exist High quality soldering between the 6061 boards. Taking the key structural parts of aluminum alloy used in high-voltage electrical appliances as an example, the mixed welding method of dissimilar welding wires includes the following steps:

[0026] 1) Clean the riveting tooling and check all the welding parts, use cleaning agent to clean the dust and oil on the weld and its 50mm range, and use a wire brush or thousand blades to clean the oxide film at the welding groove;

[0027] 2) riveting each welding sub-piece on the riveting tooling to obtain the base metal 24;

[0028] 3) Carry out horizontal welding on the base metal...

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Abstract

The invention discloses an aluminum alloy piece welding method. The aluminum alloy piece welding method comprises the following steps that firstly, bottoming welding is conducted on a welding line of aluminum alloy base metal through an ER5356 welding stick in a TIG welding manner, and a bottoming welding flux layer is formed on the welding line of the aluminum alloy base metal; secondly, filling welding is conducted on the bottoming welding flux layer through an ER4043 welding stick in a TIG welding manner, and a filling welding flux layer is formed on the bottoming welding flux layer; and thirdly, capping welding is conducted on the filling welding flux layer through an ER5356 welding stick in a TIG welding manner. According to the aluminum alloy piece welding method, the filling welding flux layer is formed in the manner that the ER4043 welding stick is welded to the bottoming welding flux layer with the ER5356 welding stick, the characteristic that the tenacity of the welding flux layer formed through welding of the ER4043 welding stick is good is utilized, the tenacity of the whole welding line is improved, the problem that welding cracks occur in the position of the welding line after the aluminum alloy base metal is cooled is avoided, and accordingly the pass percent of a welded finished product of the aluminum alloy base metal is increased.

Description

technical field [0001] The invention relates to a welding method for aluminum alloy parts, in particular to a welding method with a plate thickness ranging from 30 mm to 90 mm and a welding angle height between 30 mm and 90 mm. Fillet weld welding method between 6061 plates. Background technique [0002] At present, in order to realize the functions of light weight, good electrical conductivity and excellent mechanical properties, the conductive structural parts in UHV switchgear mostly use aluminum alloy welded parts. At present, after the classification of different aluminum alloy materials in the same industry in China, one of the welding materials of ER5183, ER4043, and ER5356 welding wire is mostly used for welding between aluminum alloy parts. Such as figure 1 and figure 2 As shown, the traditional manufacturing method of support flange 1 in UHV switchgear is based on the welding material recommended by the wire grade, and ER5356 welding wire is used between the 6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/02B23K9/16B23K9/23B23K9/32B23K103/10B23K101/18
CPCB23K9/02B23K9/164B23K9/167B23K9/23B23K9/32B23K2101/18B23K2103/10
Inventor 孟祥喜常秀丽李宏楼胡延伟张全民王赏
Owner HENAN PINGGAO ELECTRIC
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