Post-treatment exhaust system pipe fitting welding protection structure

Abstract

The invention provides a post-treatment exhaust system pipe fitting welding protection structure. The post-treatment exhaust system pipe fitting welding protection structure comprises an adjusting support, a conveying air cylinder, a high-temperature-resistant spacer, a fixing plate, a gas collecting device, a gas collecting baffle and a brush; a welding gun support is movably connected with the adjusting support, and a welding gun is fixedly connected with the welding gun support through bolts; the tail end of a piston rod of the conveying air cylinder is fixedly connected with a frame body of the adjusting support; the high-temperature-resistant spacer is fixedly connected with the lower end of an argon conveying pipe; the gas collecting device is connected with the left end of the high-temperature-resistant spacer through welding; the fixing plate comprises a front pressing plate and a rear pressing plate, and the rear surface of the front pressing plate is movably connected with the rear pressing plate through a hinge piece; and a semicircular welded junction is formed in the right end of the high-temperature-resistant spacer, and the high-temperature-resistant spacer is an arc-shaped cover body with a downward opening. According to the post-treatment exhaust system pipe fitting welding protection structure, a gas protection environment can be formed, blackening probabilityof weld joints is reduced, the conditions of weld defects such as weld penetration are reduced, and the welding quality is greatly improved.

Description

technical field [0001] The invention belongs to the field of argon arc welding components, and more specifically relates to a welding protection structure for pipe fittings of an aftertreatment exhaust system. Background technique [0002] Argon arc welding is a welding technique that uses argon as a shielding gas. Also known as argon gas shielded welding. It is to pass argon protective gas around the arc welding to isolate the air from the welding area and prevent the oxidation of the welding area. Argon arc welding technology is based on the principle of ordinary arc welding, using argon gas to protect the metal welding material, and through high current to make the welding material melt into a liquid state on the base material to be welded to form a molten pool, so that the welded metal and the welding material It is a welding technology that achieves metallurgical combination of materials. Since argon gas is continuously supplied during high-temperature fusion welding,...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the present invention provides a post-processing exhaust system pipe fitting welding protection structure to solve the problem that similar argon arc welding has uneven gas protection when welding at the open seam, and blackening of the weld seam is prone to occur. Welding defects such as piercing

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