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Automatic tig welding method for single-side welding and double-side forming of aluminum alloy butt ring seam without backing

A technology of single-sided welding double-sided and welding method, applied in the field of aluminum alloy welding, can solve the problems of unsightly welding seam, deformation, low production efficiency, etc.

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

At present, the girth welds with aluminum alloy thickness less than 12 mm are mostly welded by double-sided welding and double-sided forming or single-sided welding and double-sided forming with backing. The edge of the welding seam is seriously collapsed and the deformation is serious, and it needs to be corrected after welding
Low production efficiency and high cost Weld formation is not beautiful, prone to defects such as pores, inclusions, lack of fusion, and incomplete penetration

Method used

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  • Automatic tig welding method for single-side welding and double-side forming of aluminum alloy butt ring seam without backing
  • Automatic tig welding method for single-side welding and double-side forming of aluminum alloy butt ring seam without backing
  • Automatic tig welding method for single-side welding and double-side forming of aluminum alloy butt ring seam without backing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An automatic TIG welding method for single-side welding and double-side forming of aluminum alloy butt joint without liner, including the following steps:

[0014] The first step is to use acetone to clean the oil around the butt joint of the cylinder before welding, and use a stainless steel wire wheel to remove the 50mm inner oxide film around the butt joint of the cylinder. The thickness of the cylinder is 8mm and the diameter is 200mm.

[0015] The second step is to preheat before welding, the temperature is 110°C, and the debugging control panel controls the welding current, voltage, welding speed, and wire feeding speed in real time. The specific parameters are as follows:

[0016]

[0017] The third step is to use an automatic argon tungsten arc welding machine for welding. The first layer is welded without adding welding wire to form the back, the second layer is filled with welding wire, the third layer is added with welding wire, and the welding torch swings...

Embodiment 2

[0020] The first step is to use acetone to clean the oil around the butt joint of the cylinder before welding, and use a stainless steel wire wheel to remove the 50mm inner oxide film around the butt joint of the cylinder. The thickness of the cylinder is 10mm and the diameter is 800mm.

[0021] The second step is to preheat before welding. The temperature is 130°C. The debugging control panel controls the welding current, voltage, welding speed and wire feeding speed in real time. The specific parameters are as follows:

[0022]

[0023] The third step is to use an automatic argon tungsten arc welding machine for welding. The first layer is welded without adding welding wire to form the back, the second layer is filled with welding wire, the third layer is added with welding wire, and the welding torch swings to form the cover.

[0024] After the first layer of welding, the back of the weld has the same height and width, and a 5mm deep groove is formed on the front of the w...

Embodiment 3

[0026] The first step is to use acetone to clean the oil around the butt joint of the cylinder before welding, and use a stainless steel wire wheel to remove the 50mm inner oxide film around the butt joint of the cylinder. The thickness of the cylinder is 11mm and the diameter is 1400mm.

[0027] The second step is to preheat before welding. The temperature is 140°C. The debugging control panel controls the welding current, voltage, welding speed and wire feeding speed in real time. The specific parameters are as follows:

[0028]

[0029] The third step is to use an automatic argon tungsten arc welding machine for welding. The first layer is welded without adding welding wire to form the back, the second layer is filled with welding wire, the third layer is added with welding wire, and the welding torch swings to form the cover.

[0030] After the first layer of welding, the back of the weld has the same height and width, and a 6mm deep groove is formed on the front of the ...

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Abstract

Aluminum alloy butt circular seam without liner single-sided welding double-sided forming automatic TIG welding method, use acetone to clean the oil around the butt circular seam of the cylinder body before welding, and use stainless steel wire wheel to remove the inner oxide film around the butt ring seam of the cylinder body. Preheating, debugging the control panel to control the welding current, voltage, welding speed, wire feeding speed matching in real time, using automatic tungsten argon arc welding machine welding, welding the first layer without adding wire back forming, adding welding wire filling in the second layer, Three layers of welding wire are added, and the welding torch is oscillated to form the cover surface. The invention adopts simple equipment, convenient operation, realizes welding automation, stable welding, fast welding speed, low production cost, less filler wire, less welding layers, and less deformation after welding. No correction is required, the appearance is beautiful and the welding seam quality is high.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy welding, in particular to an automatic TIG welding method for single-sided welding and double-sided forming of aluminum alloy butt ring seams without liners. Background technique [0002] Aluminum alloy is widely used in aerospace, shipbuilding, transportation, electric power and other industries due to its light weight, high specific strength, good corrosion resistance, non-magnetic properties, good formability and good low temperature performance. At present, the girth welds with aluminum alloy thickness less than 12mm are usually welded by double-sided welding and double-sided forming or single-sided welding and double-sided forming with backing. The edge of the weld seam is severely collapsed and the deformation is serious, and it needs to be corrected after welding. Low production efficiency, high cost, unsightly weld formation, easy to produce pores, inclusions, incomplete fusion, in...

Claims

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Application Information

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