Multi-stage rapid conversion gas protection device for argon arc welding of elbow parts

Abstract

The invention discloses a multi-stage rapid conversion gas protection device for argon arc welding of elbow parts. The multi-stage rapid conversion gas protection device for argon arc welding of elbowparts comprises a mounting seat, wherein the mounting seat is arranged at the end part of an elbow part, a plug for fixing the port of the part is arranged on the mounting seat, a plurality of part mounting grooves are machined in the surface of one side, matched with the part port, of the plug, the part mounting grooves are circular arc-shaped grooves which are concentrically arranged, and different part mounting grooves are matched with the parts with different sizes; and the mounting seat penetrates through the plug and is provided with an argon through hole, and argon is introduced into the elbow part from the outside of the mounting seat through the argon through hole. According to the multi-stage rapid conversion gas protection device for argon arc welding of elbow parts, the purpose of providing welding protection for the elbow parts with various sizes and specifications can be realized by the same fixture, the fixture is convenient to install, the production efficiency can beimproved, the tooling cost can be reduced, and the application prospect is wide.

Description

technical field [0001] The invention relates to a welding tool, in particular to a multi-stage fast switching gas protection device for argon arc welding of elbow parts. Background technique [0002] Argon arc welding is a non-melting tungsten inert gas shielded welding technology that uses argon as a shielding gas. During welding, argon gas is ejected from the nozzle of the welding torch at a certain flow rate, and a gas protective layer is formed around the arc to isolate the air, so as to prevent oxygen, nitrogen, etc. role, so as to obtain high-quality welds. [0003] The welding seam quality requirements of aero-engine pipeline elbow parts are high, and ray perspective is generally required. In order to improve the pass rate of the first inspection of the weld seam, it is necessary to inject argon gas inside the part during welding to protect the back of the weld seam. . A set of traditional fixtures for special plugs can only process parts of one size. Because there...

AI Technical Summary

Problems solved by technology

A set of traditional fixtures for special plugs can only process parts of one size. Because there are many types of aero-engines developed, elbow parts have many specifications and small batches, the traditional plug processing method not only takes up a lot of tooling costs, but also It is also not conducive to the management of tooling

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