Micro-alloying spot welding process distance-adjustable alloy powder roller coating equipment

Abstract

The invention discloses distance regulating type alloy powder rolling coating equipment of a micro alloy spot welding process. The equipment comprises a base, wherein an ascending and descending clamping seat is arranged above the base; a rolling coating groove is formed in the ascending and descending pressing seat; a linear sliding element parallel to the rolling and coating groove is fixed on the ascending and descending pressing seat; an ascending and descending coating roller assembly is fixed on the linear sliding element; the ascending and descending coating roller assembly extends into the rolling coating groove; the ascending and descending coating roller assembly rolls along the rolling coating groove. When being used, the distance regulating type alloy powder rolling coating equipment of the micro alloy spot welding process has the obvious effects that the alloy powder can be efficiently, stably and uniformly coated on the surface of a metal plate in a multi-point way; the operation is simple; the speed is high; after the long-time use, the abrasion is small; the alloy powder coating quality is high; the long-effect stability is realized; the spot welding quality of the brittle metal can be favorably improved.

Description

technical field [0001] The invention relates to a spot welding auxiliary device, in particular to a distance-adjustable alloy powder roller coating equipment for a microalloying spot welding process. Background technique [0002] When spot welding metals such as Mg and Al, due to their high brittleness, it is difficult to form a solid solution during spot welding, so the welding quality is not good. In an earlier study, the researchers found that for spot welding between homogeneous metal Mg, by using Cu-Al-Zn three metal powders, a microalloyed zone can be formed at the welded joint of metal Mg, thereby harvesting the nugget Regular symmetry, the excellent effect of increasing the size of the nugget; and in the follow-up research, it was found that for the spot welding between dissimilar metals, the use of appropriate alloy powder can also form a micro-alloyed area at the welded joint, improving the spot welding. welding quality. [0003] When using alloy powder to improv...

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Problems solved by technology

[0003] When using alloy powder to improve spot welding quality, it is necessary to prepare the alloy powder into a high-viscosity mixture with a volatile solvent, and then coat it on the surface of the metal material. The existing technology is to use a brush to brush the alloy powder on the welded lap At the joint, this treatment method is inefficient, and the quality of manual brushing is difficult to guarantee, and it is easy to cause spot welding quality problems due to uneven thickness

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