Variable-polarity plasma arc wake flame guide tool and welding method

A plasma arc and welding method technology, applied in the field of ion arc tail flame diversion tooling and welding, can solve problems such as the inability to meet the requirements of variable polarity plasma arc welding process, increase cost, ensure welding seam quality, and ensure temperature gradient Effect

Active Publication Date: 2019-03-01
BEIJING SATELLITE MFG FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When welding aluminum alloy products, aluminum alloy products need to use welding tools to fix the butt weld seam to prevent product welding deformation. Welding grooves are designed on the back of the welding seams. The sink method cannot meet the process requirements of variable polarity plasma arc welding

Method used

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  • Variable-polarity plasma arc wake flame guide tool and welding method
  • Variable-polarity plasma arc wake flame guide tool and welding method
  • Variable-polarity plasma arc wake flame guide tool and welding method

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Embodiment

[0046] A variable polarity plasma arc tail flame diversion tool, the specific technical scheme is as follows:

[0047] Depending on the welding form of the product, different plasma arc tail flame diversion methods can be used. The ratio of the width W of the U-shaped groove of the plate 15 to the width w of the weld is 3, and the width of the U-shaped groove of the plate 15 is hereinafter referred to as The ratio of W to the diameter of the outer gun head 11 is 1.5. In this embodiment, the width w of the weld seam is 10 mm, the width W of the U-shaped groove is 30 mm, and the diameter of the gun head 11 is 20 mm. When the U-shaped groove is a closed inner cavity or the exhaust is poor, it is necessary to open an exhaust hole 14 in the U-shaped groove to discharge the high-pressure and high-temperature gas generated by welding, and to ensure that the outgoing position is well ventilated with the outside world. Specifically, when the height H of the U-shaped groove is greater t...

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Abstract

The invention relates to a variable-polarity plasma arc wake flame guide tool. The variable-polarity plasma arc wake flame guide tool comprises an upper pressing plate (12) and a lower weighing plate(15), wherein the upper pressing plate (12) and the lower weighing plate (15) are respectively located on both sides of an external butt material (4); the upper pressing plate (12) is connected with the lower weighing plate (15) so as to fix the external butt material (4); the lower weighing plate (15) is in a shape of a U-shaped groove; the weld width of the external butt material (4) is w; and the ratio of the width W of the U-shaped groove of the lower weighing plate (15) to the weld width w is 2 to 4, and the ratio of the width of the groove of the upper pressing plate (12) to the diameterof an external gun head (11) is 1.2 to 2.5. The variable-polarity plasma arc wake flame guide tool is used for preferably guiding the welding wake flame; in the welding process of a large complex camber structure, the structure of the tool and a welding method are optimized, so that the large complex camber structure is welded, and the welding quality and the welding precision are guaranteed.

Description

technical field [0001] The invention relates to a variable polarity plasma arc tail flame diversion tooling and a welding method, belonging to the field of mechanical engineering and welding. Background technique [0002] Polarity-variable plasma arc welding is one of the three high-energy beam welding methods, which can achieve one-time welding without groove opening, and compared with other welding methods, it has low cost, fewer defects such as pores and slag, and is suitable for aluminum alloys. The welding aspect has been widely used. [0003] The torch head part mainly includes tungsten electrode 3, plasma gas 2, shielding gas 1, and plasma arc 5 during polarity-variable plasma arc welding. A large amount of high-pressure and high-temperature gas is generated during the welding process of the butt joint material 4, and the high-pressure and high-temperature gas can pass through The small hole 7 in the welding process enters the back side of the weld to form a tail fla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K10/02
CPCB23K10/02
Inventor 魏松葛一凡黄宁姜坤章朋田曾如川杜会桥刘鑫
Owner BEIJING SATELLITE MFG FACTORY
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