Strong wear-resistant arc spraying wire containing Ti(C,N) hard phase

Abstract

The invention relates to a strong abrasion resisting electric arc spraying powder core wire containing Ti (C, N) hard phase and a preparation method thereof. The wire comprises the following powder core raw materials by mass percentage: 13-17% of Ti (C, N) powder, 16-20% of Cr powder, 17-23% of Cr2C3 powder, 9-13% of Ni powder, 1-3% of Mo powder, 15-17% of Si-Fe powder, and the rest being Mn-Fe powder. The preparation method comprises the following steps: (1) the powder core raw materials are weighed in proportion; (2) the powder core raw materials are mixed; (3) steel strips are used to wrap the mixed powder core raw materials to form thick wires; (5) the diameter of the thick wires is reduced grade by grade to form finished wire products. The wires can form constant dense protective coating on metal substrates by electric arc spraying, especially supersonic electric arc spraying, the protective coating has Ti(C, N)-based metal ceramic texture and performance, and has the characteristics of stainless steels, has higher hardness, red hardness, abrasion resistance, crater wear resistance and high pyrochemical stability, and is mainly used in surface protection for equipment such as boiler three pipes under high temperature and high abrasion and corrosion.

Description

technical field [0001] The invention relates to a strong wear-resistant electric arc spraying powder core wire material containing Ti (C, N) hard phase, and also relates to a preparation method of the wire material, which can be mainly used in high-temperature and high-abrasion environments such as three boiler tubes Surface protection of lower facilities. technical background [0002] Arc thermal spraying is an economical and effective protection process for large-area protective coatings on the heating surface tubes of coal-fired boilers (water-cooled wall tubes, superheater tubes, and reheater tubes, referred to as boiler "three tubes"). The working conditions of the facilities are harsh, and it is easy to produce high-temperature erosion and corrosion wear. Therefore, it is required that the spraying materials still have strong wear resistance and corrosion resistance under high temperature conditions, and form an effective protective coating. At present, many people hav...

AI Technical Summary

Problems solved by technology

[0002] Arc thermal spraying is an economical and effective protection process for large-area protective coatings on the heating surface tubes of coal-fired boilers (water-cooled wall tubes, superheater tubes, and reheater tubes, referred to as boiler "three tubes"). The working conditions of the facilities are harsh, and it is easy to produce high-temperature erosion and corrosion wear. Therefore, it is required that the spraying materials still have strong wear resistance and corrosion resistance under high temperature conditions, and form an effective protective coating. At present, many people have proposed There are different spraying materials, but there are more or less deficiencies in wear resistance and corrosion resistance, so it is necessary to continuously develop new high-performance surface protection materials