Automatic welding and cooling device and welding method

Abstract

The invention relates to an automatic welding and cooling device and welding method, and belongs to a welding device and a welding method. The technical problems that when pipes are welded, heat radiation performance is poor, and thin and small pipes cannot be welded are mainly solved. According to the technical scheme, the device and method are characterized in that a telescopic air cylinder (5) is arranged in an air cylinder sleeve (6), a cooling chamber (2) is arranged at one end of the telescopic air cylinder (5), a cooling pipe (1) is arranged at the other end of the cooling chamber (2), a water outlet (3) is connected into one side of the cooling chamber (2), and a water inlet (4) is connected into the other side of the cooling chamber (2). The device and method are mainly used for welding and cooling the small pipes or the thin-wall pipes.

Description

technical field [0001] The invention relates to a cooling device and a welding method, in particular to an automatic welding cooling device and a welding method. Background technique [0002] At present, metal pipe to pipe butt welding is an indispensable content in pipe manufacturing and technical application. However, the welding heat process will promote the grain growth in the welding heat-affected zone, resulting in the degradation of the performance of the welded joint, and the welded pipe is easy to weld through and deform. To this end, through certain cooling means, reduce the heat input of the welding heat process to the weld area, control the welding heat cycle in the welding heat affected zone, reduce the width of the welding heat affected zone as much as possible, and reduce the high temperature residence time. Reducing the growth of fine grains is one of the core technologies to effectively guarantee and improve the microstructure and performance of pipe-to-pip...

AI Technical Summary

Problems solved by technology

[0004] The technical scheme adopted by the present invention to solve the technical problem is: it mainly inserts an automatic welding cooling device containing circulating cooling water into the inside of the pipe when welding the pipe, and then performs welding, so that the high temperature generated by welding on the outer wall of the pipe is conducted to the pipe through the pipe wall. The automatic welding cooling device, and then the heat is taken away by the circulating cooling water, so as to achieve the purpose of quickly cooling down the welding place of the pipe while welding, which can ensure that the pipe will not be deformed or melted due to the high temperature of the welding place during welding, which will affect the welding effect , especially to solve the problem that thin-walled pipes are generally difficult to weld or even impossible to weld

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