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Tailor welding method of thick aluminium alloy plate

An aluminum alloy plate, aluminum plate technology, applied in welding equipment, arc welding equipment, metal processing equipment, etc., can solve the requirements of X-ray flaw detection level II weld, high cost of electron beam welding, low tensile strength, etc. question

Inactive Publication Date: 2011-05-04
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Electron beam welding is expensive and must be carried out in a vacuum chamber, and the size of the welded plate is limited by the space of the vacuum chamber
Manual molten electrode argon arc welding is currently welding aluminum alloy plates with a thickness of more than 60mm. The internal defects cannot meet the requirements of X-ray flaw detection II level welds, and the tensile strength of the welds is less than 65% of the tensile strength of the base metal.

Method used

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  • Tailor welding method of thick aluminium alloy plate
  • Tailor welding method of thick aluminium alloy plate

Examples

Experimental program
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specific Embodiment

[0027] Use molten electrode argon arc welding, the specific implementation steps are as follows:

[0028] (1) The two tailor-welded aluminum sheets 1 and 2 are grooved 3 respectively, and the welded groove 3 is mechanically cleaned to remove the oxide film and other impurities on the groove;

[0029] (2) Aluminum alloy plates 1 and 2 are preheated, and the preheating temperature is kept in the range of 70°C to 150°C, that is, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C, 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, and keep the ambient temperature at 13°C~26°C, the ambient temperature is 13°C, 16°C, 19.5°C , 23°C, 26°C, ambient humidity less than 50%;

[0030] (3) Seam two tailor-welded aluminum alloy plates 1 and 2, keep the gap between the two plates at 0mm to 5mm, and the gap between the two plates is 0mm, 1mm, 2mm, 3mm, 4mm or 5mm;

[0031] (4) Carry out back welding: first weld one section to the center, then weld two sections on both sides, and th...

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Abstract

The present invention belongs to a welding method of aluminium alloy plate, specifically relates to a tailor welding method of thickness aluminium alloy plate. The method of the present invention has the advantages that by the welding technology method of the present invention, tailor welding of an aluminium alloy plate more than 60mm in thickness can be welded by manual consumable electrode argon welding; level II welding joint requirements of X-ray fault detection are satisfied; and the tensile strength of welding joint reaches 96% of the strength of the base metal.

Description

technical field [0001] The invention belongs to a welding method for aluminum alloy plates, in particular to a tailor welding method for large aluminum alloy plates. Background technique [0002] At present, manual metal argon arc welding and electron beam welding are mainly used for welding thick aluminum alloy plates. Electron beam welding is expensive and must be carried out in a vacuum chamber, and the size of the welded plate is limited by the space of the vacuum chamber. Manual molten electrode argon arc welding is currently welding aluminum alloy plates with a thickness of more than 60mm. The internal defects cannot meet the requirements of X-ray flaw detection level II welds, and the tensile strength of the welds is less than 65% of the tensile strength of the base metal. Contents of the invention [0003] The object of the present invention is to provide a tailor welding method for a thick aluminum alloy plate that can meet the requirements of X-ray flaw detectio...

Claims

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Application Information

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IPC IPC(8): B23K9/025B23K9/235B23K9/173B23K33/00B23K103/10
Inventor 郎培新邢鹏李迺钜曹保奇陈素娟
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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