The method of single-sided gas welding and double-sided forming of aluminum busbar

Abstract

The invention provides a method for single-sided gas welding and double-faced forming of aluminum busbars. The method comprises the steps that (1) a pre-prepared special welding mold is arranged, and the mold comprises a flat-plate-shaped adiathermic base, a containing tank formed in the surface of the base, and a weld pool tank which is formed in the bottom face of the containing tank and extends in the width direction of the containing tank; (2) the two aluminum busbars are placed on the mold, and the faces of welding of the busbars are made to flush with the two edges of the weld pool tank; (3) gaps formed between the faces of the welding of the aluminum busbars are separated into a plurality of sectors, and multilayer welding is started from a first sector, so that the front face and the back face of a welding seam of the sector are formed consistently; and (4) the welding process implemented in the step (3) is repeatedly conducted on the rest of the sectors until welding seams of all the sectors are formed. According to the method, the welding only needs to be conducted on one side of each aluminum busbar, so that it is ensured that the two faces of the welding seams are formed well. The situations of weld beading, downward falling and incomplete fusion are avoided, and the welding speed can be improved.

Description

technical field [0001] The invention relates to the field of gas welding, in particular to a method for forming aluminum bus bars on one side by gas welding and on both sides. Background technique [0002] The busbar refers to the power busbar in the electrical cabinet, which has a large current flow capacity. Because metal aluminum has a low melting point and is not prone to irregular flow after melting, metal aluminum is usually used as the material of the busbar to make an aluminum busbar. [0003] In practice, multiple aluminum busbars need to be connected by welding to meet the requirements of long-distance power transmission. In the prior art, when gas welding is used to weld the aluminum busbars, the end surfaces of the aluminum busbars are first brought into contact, and then welding is performed from both sides of the contacting end surfaces of the aluminum busbars with a welding torch. In the welding process, in order to penetrate the weld, it is easy to have wel...

AI Technical Summary

Problems solved by technology

In the welding process, in order to penetrate the weld, it is easy to have welding bumps and burrs, and in order to reduce the welding burrs and burrows, it often occurs that there is no penetration and no fusion, thereby reducing the effective area of ​​the weld and increasing the strength of the joint. decline

In both cases, the welding quality will be seriously affected

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