Aluminum and aluminum alloy handwork double-gun double-face TIG welding technique

A welding technology, aluminum alloy technology, applied in welding equipment, metal processing equipment, welding/welding/cutting items, etc., to solve the effect of low welding efficiency, stable process parameters and process, and strong adaptability

Inactive Publication Date: 2009-07-08
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a double-sided TIG welding technology for aluminum and aluminum alloy manual double-gun double-sided TIG welding, thereby canceling the welding groove, two-layer two-pass welding and double-sided forming, and solving the TIG welding position of aluminum and aluminum alloy vertical welding. Difficulties in welding process and operation technology, realize aluminum and aluminum alloy double gun double-sided TIG vertical welding to improve weld quality and greatly improve welding production efficiency

Method used

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  • Aluminum and aluminum alloy handwork double-gun double-face TIG welding technique
  • Aluminum and aluminum alloy handwork double-gun double-face TIG welding technique
  • Aluminum and aluminum alloy handwork double-gun double-face TIG welding technique

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Embodiment 1

[0020] Using the invented double-gun double-sided TIG welding technology, the longitudinal welds of 5083-O aluminum alloy half elbows with wall thicknesses of 8mm, 10mm, 12mm, 16mm and 20mm series were welded. The upward vertical welding process is adopted, the welding wire is SALMg-3 welding wire, the welding joint is in the form of "I" type butt joint without groove, and the butt joint gap is 3mm to 8mm. Double torch welding adopts a high-frequency arc ignition device. Under the guidance of the front welding torch, the two torches basically start arcing at the same time. Welding wire is added to the front side, and the inclination angles α and β of the welding torch are controlled at 70° to 100° during the welding process, and the angle θ between the welding wire and the welding torch is kept at 80° to 110°. The tungsten electrode does not swing left and right; the welding current is attenuated when the arc is stopped, and the argon gas must be cut off with a delay of 5s to ...

Embodiment 2

[0025] Using the invented double-gun and double-sided TIG welding technology, the ring welds of 5A01 aluminum alloy shrimp joint elbow pipes with wall thicknesses of 6mm, 10mm, 12mm and 16mm were welded. The upward vertical welding process was adopted, and the welding wire was 5B01 welding wire. , Welded joints are in the form of non-groove corner joints, and the butt gap is 3mm to 8mm. Double torch welding adopts a high-frequency arc ignition device. Under the guidance of the front welding torch, the two torches basically start arcing at the same time. Welding wire is added to the front side, and the inclination angle α and β of the welding torch are controlled at 70°~100° during the welding process, and the angle θ between the welding wire and the welding torch is kept at 80°~110°; the tungsten electrode does not swing left and right; And the argon should be cut off after a delay of 5s to 7s. See Table 4 for other welding parameters preferred under this condition:

[0026]...

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Abstract

The invention introduces a manual double-torch double-side TIG welding technology for welding aluminum and aluminium alloy. The welding process comprises the following steps: a vertical upward welding technique is adopted, two manual welding torches simultaneously and respectively initiate arc and weld at the front side and the reverse side of welding joints to be welded; two tungsten electrodes are basically aligned; the two welding torches move simultaneously and share a melting bath; the front side of welding lines are filled with welding sticks while the reverse side is not. Welding parameters such as the reverse side welding torch current and the like are less than the welding parameters of the front side welding torch; once weld penetration is achieved and both sides are shaped; argon shield is adopted in the process of welding; inclination angles Alpha and Beta are controlled within the range of 70-100 degrees, the included angle Theta between the welding sticks and the welding torches is maintained within the range of 80-110 degrees. According to the welding technology of the invention, irregular space curve welding lines of medium wall are welded, the applied technology is flexible and the adaptability is high, thus simplifying production procedures and process steps, greatly improving welding efficiency, avoiding possibility of causing interlayer defects due to multilayer welding and improving interior quality of welding lines and appearance quality thereof.

Description

technical field [0001] The invention relates to an aluminum and aluminum alloy welding technology, in particular to a manual double-gun double-sided TIG welding technology for aluminum and aluminum alloy. Background technique [0002] The rapid development of modern petroleum, chemical, shipbuilding and other industries has led to the wide application of aluminum and aluminum alloy equipment and pipelines. High-quality, high-efficiency, low-cost, and low-investment welding technology will be the first choice for modern industrial production. Traditional ordinary manual tungsten argon arc welding (TIG for short) has been difficult to meet the requirements of mass welding production and processing. Manual double-gun double-sided TIG Welding technology came into being under this condition. At present, there are relatively few relevant technical materials about double-gun double-sided TIG welding of aluminum and aluminum alloys. [0003] At present, the commonly used welding m...

Claims

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Application Information

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IPC IPC(8): B23K9/16B23K103/10
Inventor 刘志颖余巍李国林
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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