Hollow tungsten electrode TOPTIG welding method

Abstract

The invention discloses a hollow tungsten electrode TOPTIG welding method. The method is achieved through a TOPTIG welding gun. A tungsten electrode in the TOPTIG welding gun is a hollow tungsten electrode, and the hollow tungsten electrode is used for generating welding arcs. A gas inlet is formed in the top end position of the TOPTIG welding gun, the hollow tungsten electrode is internally provided with an inner hole, and included angles between the two sides of the bottom end of the hollow tungsten electrode and the vertical direction are 20 degrees. The hollow tungsten electrode TOPTIG welding method comprises the steps that S1, inert protective gas is fed into the gas inlet and the TOPTIG welding gun; S2, a welding wire is fed into the arcs from a wire feeding nozzle in a manner thatthe included angle between the welding wire and the TOPTIG welding gun is 20 degrees and then welding begins, and meanwhile, to guarantee that the welding current can be within a certain range, the gas flow speed of the inert protective gas fed into the inner hole is controlled to be within 5 L / min-10 L / min. According to the hollow tungsten electrode TOPTIG welding method, the maximum allowable current for TOPTIG welding is increased, the welding wire deposition rate is increased, the weld penetration of a weldable workpiece is increased, and the welding efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of TIG (Tungsten Inert Gas Welding, tungsten argon arc welding) welding, and in particular relates to a hollow tungsten TOPTIG welding method. Background technique [0002] The welding process of argon tungsten arc welding is stable and the welding quality is good. However, there are obvious defects in this method: the single-pass weld penetration is shallow, the deposition rate is low, and it is not suitable for thick plate welding. Improving the welding efficiency of TIG welding while maintaining the advantages of good weld formation and high welding quality has always been the research goal of welding workers, and many efficient welding methods based on TIG welding have emerged. [0003] TOPTIG welding is a new type of robotic TIG wire filling process. Its key part is the welding torch integrated with the wire feeding system. It has the advantages of good accessibility of the welding torch, fast depositi...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a hollow tungsten electrode TOPTIG welding method, which can increase the maximum allowable current during TOPTIG welding, increase the deposition rate of welding wire in the welding process, and improve welding efficiency, so as to solve the existing problems. In TOPTIG welding technology, the welding range is limited due to the small welding current. The specific technical scheme is as follows:

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