Induction brazing welding method for metal part

Abstract

The invention discloses an induction brazing welding method for a metal part. The method utilizes induction brazing welding equipment and then is implemented according to the following steps of: a step 1 of selecting the induction brazing welding equipment and determining related parameters; a step 2 of carrying out weldment surface processing, i.e. roughening the welding surface of a weldment, processing the metal-plated surface of the weldment, carrying out matched selection between the weldment and a soldering flux, a brazing filler metal, a welding temperature and a brazing clearance and selecting each process parameter of induction brazing; a step 3 of assembling and fixing the weldment; and a step 4 of implementing welding. According to the induction brazing welding method disclosed by the invention, the induction welding and the induction brazing welding of structures of different materials, pipe fittings, sheets, tube plates and the like are implemented, the sealing performance of a weld joint is improved, the intensity of the weld joint is reduced, the electrical conductivity is obviously improved, and the weld joint has a reliable quality.

Description

technical field [0001] The invention belongs to the technical field of induction welding and relates to an induction brazing welding method for metal parts. Background technique [0002] Induction brazing is the result of the comprehensive interaction of current collection, magnetism, heat, phase change, mechanics, welding, metallurgy, etc. The existing theories explain their mechanisms independently from their own principles. There are many induction heating engineering design and calculation theories. Insufficient, so far there is no complete coupling theory that can use mathematical methods to accurately quantitatively and qualitatively couple the heating physical process. [0003] At present, the internationally popular theoretical research method is to use various temperature measuring instruments to measure the time and temperature curves and high-speed zoom cameras to record the induction brazing process for specific products, and then use the finite difference method...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a kind of induction brazing welding method of metal parts, which solves the existing problems in the prior art, such as carbon steel, stainless steel, silver and silver alloy, aluminum and other heterogeneous welding materials composed of them, which are easy to reduce the welding temperature. Seam tightness, reducing weld strength and conductivity, causing welds to absorb moisture and cause weld corrosion

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