Filling metallic particles for overlay welding and its preparation method

Abstract

The invention discloses a stuff metal particle used in stack welding, wherein the particles are 0.1-5.0mm, comprising S less than 0.05%, P less than 0.05%, oxygen less than 60ppm, and nitrogen less than 60ppm, while other chemical components are set by object metal. The metal particles are directly granulated from waste steel and iron alloy, with high alloy utilization and low cost. The invention can prepare stuff metal particles with corrosion resistance, abrasion resistance and thermal resistance, with high alloy content.

Description

technical field

[0001] The invention relates to a welding material and a production method thereof, in particular to a novel filler metal particle for surfacing welding and a preparation method thereof. Background technique

[0002] Most of the mechanical parts are made of metal materials. Due to the relative movement between parts or between parts and materials, wear will occur; due to environmental influences, there will be chemical and electrochemical effects, which will cause the metal surface of the parts to be damaged. Corrosion; Some parts may be both worn and corroded, resulting in abrasion. With the development of modern industry, mechanical parts often work under extremely complex and harsh conditions, and a large number of mechanical equipment are often scrapped due to wear, corrosion or abrasion. This requires that the surface of mechanical equipment under the working conditions of high temperature and high pressure, high load, oxidation, and corrosion has good ...