A method of manufacturing a high wear-resistant slurry nozzle

Abstract

The invention discloses a manufacturing method of a high abrasion-resistant slurry nozzle. The manufacturing method comprises the following steps of (1) blanking processing, (2) laser cladding, specifically, laser cladding comprises (1) nozzle external surface treatment and (2) nozzle internal hole treatment, (3) nozzle finishing, specifically, nozzle finishing comprises (1) nozzle external surface treatment and (2) nozzle internal hole treatment, (4) nozzle checking, and (5) nozzle assembly assembling. According to the technical scheme of the manufacturing method of the high abrasion-resistant slurry nozzle, the unique manufacturing method is adopted, through a laser cladding technology and based on the advantage that combination of abrasion-resistant materials formulas is convenient, thefact that an easy-to-process high temperature-resistant material matrix is clad with a cladding layer with good high temperature resistance and excellent abrasion resistance in the process of nozzlemanufacturing is achieved, so that the abrasion resistance of a nozzle internal hole is better, the service life of the nozzle is prolonged, the foundation is laid for safety, economy and long periodstability of a device, and the economic benefit is improved.

Description

technical field [0001] The invention relates to a manufacturing method of a high wear-resistant slurry nozzle. Background technique [0002] The coal-water slurry nozzle (burner) is the key equipment of the coal-water slurry gasification device, and the slurry nozzle is the core component of the equipment. Its service life determines the safe, stable and long-term operation of the entire device, and determines the Therefore, improving the wear resistance of the slurry nozzle is a long-term research topic of research institutes and nozzle manufacturers at home and abroad. The methods currently used generally include: improving the high-temperature wear resistance of the material of the nozzle part; using surface wear-resistant coating technology for the working part of the nozzle; using cemented carbide inserts and other methods to prolong the service life. At present, the problems existing in the manufacturing methods of various injection combustion nozzles are as follows: ...

AI Technical Summary

Problems solved by technology

[0003] 1. It is made of high-performance integral materials, which has poor machining process, difficult welding, high cost and unsatisfactory service life;

[0004] 2. Due to the limitation of the thickness of the coating layer of the nozzle using the surface coating technology, once the coating layer is worn out, the rapid wear of the base material will quickly deteriorate the working conditions of the combustion furnace (the nozzles of some domestic enterprises using this technology have been exposed the seriousness of the problem);

[0005] 3. The nozzle made by the cemented carbide ring inserting method has serious problems of cracking or partial cracking of the cemented carbide ring during use.

[0006] To sum up the current situation, it can be seen that the existing manufacturing methods have obvious problems in terms of economy, safety of use and service life.