Alloy material for surfacing

Abstract

The invention discloses an alloy material for build up welding. The alloy material for build up welding comprises, by weight, 30 parts to 50 parts of mineral powder, 100 parts to 300 parts of alloy powder, 30 parts to 40 parts of silicate, 25 parts to 30 parts of calcium carbonate, 5 parts to 10 parts of carbon fibers and 6 parts to 8 parts of PTFE and PE mixtures, mineral powder is a mixture of one or several of rutile powder, fluorite powder, cryolite powder, feldspar powder, titanium iron ore powder, PTFE and PE are low polymer, and the degree of polymerization ranges from 80 to 120. According to the scheme, the carbon fibers and the PTFE and PE mixtures are added in the alloy material for build up welding, the alloy material can serve as a passivation carbon source while the strength and the attaching performance of a composition material are improved, and in the welding process, oxidization of the carbon fibers, carbonization of PTFE and PE and scum forming are used for reducing permeation of impurities like oxygen in environment.

Description

technical field [0001] The invention relates to a welding material, in particular to an alloy material for surfacing welding. Background technique [0002] Surfacing welding, as an economical and rapid process method for surface modification of materials, is more and more widely used in the manufacture and repair of parts in various industrial sectors. In order to play the role of the surfacing layer most effectively, it is hoped that the surfacing welding method adopted has a small dilution of the base metal, a high deposition speed and excellent performance of the surfacing layer, that is, high-quality, high-efficiency, low-dilution rate surfacing welding technology. Surfacing materials are mainly added to the weld as filler metal and become the main component of the weld metal. In order to ensure the quality and performance of the weld, there are strict regulations on the content of each metal element in the material, especially for harmful The content of impurities (su...

AI Technical Summary

Problems solved by technology

[0003] Welding material is an important factor to determine the quality of the weld. There is no doubt that the surfacing material is a mixture of pure metal materials and non-metal materials. There is an obvious two-phase layer between the two, and the combination is not good. It is easy to fall off, crack or even be damaged when it is bumped or improperly stored, resulting in defects and affecting welding quality

In addition, in the welding process, high skill is required, otherwise it is very easy for welding slag to mix into the weld seam or even cause structural defects such as dark holes, which will affect the welding quality, etc.