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An aluminum alloy automatic tig no liner single-side welding double-side forming process

A single-sided welding and double-sided forming technology, applied in the field of aluminum alloy welding, can solve the problems of low welding seam pass rate, welding seam prone to cracks, workpiece deformation, etc. Beautiful effect of welding seam forming

Inactive Publication Date: 2016-06-22
陕西国德电气制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above welding method, there are the following problems: low efficiency, high labor intensity, unable to meet the needs of mass welding production; severe overheating of the weld seam, significantly low joint strength, and the weld seam area is prone to brittleness, and the weld seam within a plate thickness of 6 mm is easily Cracks are generated; the workpiece is seriously deformed, and the weld seam and heat-affected zone are obviously collapsed; the pass rate of the weld seam is low, and the pass rate of the weld seam is 70% on average after X-ray flaw detection (JB4730-2005II level)

Method used

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  • An aluminum alloy automatic tig no liner single-side welding double-side forming process
  • An aluminum alloy automatic tig no liner single-side welding double-side forming process
  • An aluminum alloy automatic tig no liner single-side welding double-side forming process

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Experimental program
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Effect test

Embodiment 1

[0019] An aluminum alloy automatic TIG liner-free single-sided welding and double-sided forming process, comprising the following steps:

[0020] The first step is to select welding equipment and materials, using an automatic TIG girth welding machine, which can control the welding current, arc voltage, welding speed and wire feeding speed. Argon gas above %, the welding wire adopts ER5356Φ1.6mm welding wire, the cerium tungsten electrode Φ is 4.8mm, and the nozzle diameter of the welding torch is 19mm.

[0021] The second step is assembly and cleaning. Assembly is carried out first, assembly accuracy: misalignment ≤ 0.5mm, gap ≤ 0.5mm, and then tack welding, using MIG semi-automatic unilateral point to fix the block and cylinder, and then use acetone and stainless steel wire The wheel removes the oil and oxide film within 50mm on both sides of the groove, refer to figure 1 , 6 ~ 8mm thick aluminum alloys 1 and 2 use I-shaped groove 3, the groove angle is 50°,

[0022] The t...

Embodiment 2

[0029] An aluminum alloy automatic TIG liner-free single-sided welding and double-sided forming process, comprising the following steps:

[0030] The first step is to select welding equipment and materials, using an automatic TIG girth welding machine, which can control the welding current, arc voltage, welding speed and wire feeding speed. Argon gas above %, the welding wire adopts ER5356Φ1.6mm welding wire, the cerium tungsten electrode Φ is 4.6mm, the nozzle aperture of the welding torch is Φ18mm,

[0031] The second step is assembly and cleaning. Assembly is carried out first, assembly accuracy: misalignment ≤ 0.5mm, gap ≤ 0.5mm, and then tack welding, using MIG semi-automatic unilateral point to fix the block and cylinder, and then use acetone and stainless steel wire The wheel removes the oil and oxide film within 50mm on both sides of the groove, refer to figure 2 10-14mm thick aluminum alloys 1 and 2 use a blunt V-shaped bevel 3 with a bevel angle of 70°.

[0032] T...

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PUM

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Abstract

An aluminum alloy automatic TIG liner-free single-sided welding and double-sided molding process, firstly select welding equipment and materials, then assemble and clean, then perform positioning welding, and then use acetone and stainless steel wire wheels to remove the 50mm on both sides of the groove Oil stains and oxide film, put the shell on the welding operation frame, adjust the welding torch and the groove to the center, preheat, weld the first layer without welding wire, after welding the first layer, use a stainless steel wire wheel to remove the weld surface Oxide film, revealing metallic luster, welding the second layer, adding welding wire cover, welding torch and cylinder welding direction vertical swing to form weld seam, the invention has high efficiency, low labor intensity; high welding quality, beautiful shape, no undercut and Arc crater cracks; the workpiece is not easy to deform; the advantages of high weld pass rate.

Description

technical field [0001] The invention relates to the field of aluminum alloy welding, in particular to an aluminum alloy automatic TIG padless single-sided welding and double-sided forming process. Background technique [0002] For aluminum alloys with a thickness of 6-14mm, the traditional welding methods mostly use double-sided welding with opening grooves, or single-sided welding and double-sided forming with gaskets. Using the above welding method, there are the following problems: low efficiency, high labor intensity, and cannot meet the needs of mass welding production; the weld seam is seriously overheated, the joint strength is obviously low, and the weld seam area is prone to brittleness, and the weld seam within 6mm thickness is easy to Cracks are generated; the workpiece is seriously deformed, and the weld seam and heat-affected zone are obviously collapsed; the pass rate of the weld seam is low, and the pass rate of the weld seam is 70% on average after X-ray flaw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/167B23K9/02B23K9/095B23K9/235B23K33/00
Inventor 张铁民袁东
Owner 陕西国德电气制造有限公司
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