Powder cored wire for preparing carbon-nitrogen alloyed wear-resistant coating by arc spraying

Abstract

A powder cored wire for preparing a carbon-nitrogen alloyed wear-resistant coating by arc spraying. The preparation of the wire and the rolling of the wire and the wire sheath are performed by routine methods. The wire comprises the following components by mass: 0.12-0.18% of C, 0.30-0.42% of Si, 1.30-1.42% of Mn, 3.08-3.18% of Ni, 1.75-1.85% of B, 16.00-16.20% of Cr, 0.14-0.22% of Nb, 0.45-0.57% of Ti, 0.18-0.26% of V, 0.10-0.14% of N, and the balance of Fe. The invention can increase the wear resistance of the coating, and provide the coating with high bonding strength.

Description

technical field [0001] The invention relates to a powder core wire material for preparing a carbon-nitrogen alloyed wear-resistant coating by electric arc spraying. Background technique [0002] Materials and their components cause early failure and scrap due to wear, resulting in a great waste of energy and materials. According to the surveys and statistics conducted by various countries for many years, the loss caused by wear and tear alone accounts for about 1% of the total output value of the national economy. Failures caused by various types of wear often occur on the surface of materials and their components. In order to improve the reliability of parts and prolong their service life, many countries are working hard to research and apply various new technologies and new processes to improve the surface performance of parts. A large number of practical, advanced and efficient surface engineering technologies have been developed. It has become one of the key technologi...

AI Technical Summary

Problems solved by technology

In recent years, some achievements have been made in the research of wear-resistant coatings by arc spraying, but there are still many shortcomings, such as the bonding strength between most coatings and the substrate is not high; due to poor protection, there are many oxides, and the coating structure is not dense. The coating does not have good comprehensive performance, etc.

At present, carbon-strengthened alloy wire is mainly used to prepare arc spraying wear-resistant coating, but this wire has the problem that carbides are easy to grow and fall off, resulting in low bonding strength.