Method for preparing high-temperature wear resistant lining plate by plasma arc cladding

Abstract

The invention discloses a method for preparing a high-temperature wear resistant lining plate by plasma arc cladding. The method comprises the steps as follows: removing rust, greasy dirt and oxide skin on the surface of a metal base; preparing metal-based ceramic particle reinforced alloy powder according to the metal base and the work requirement; mixing mixed alloy powder with white emulsion; uniformly coating the mixed alloy powder onto the surface of the metal base; controlling the thickness of a precoating layer to be 0.8-2 mm; naturally drying; fixing the metal base with the precoating layer to a machine tool of plasma arc cladding equipment; conducting single-pass scan on the precoating layer on the surface of the metal base by plasma arc; and uniformly cladding the surface of the metal base along with the movement of the plasma arc so as to obtain a cladding layer with the cladding thickness of 0.3-1.5 mm. The high temperature resistant compound lining plate prepared by the method is low in cost and stable in quality, is suitable for large-scale production, can meet the requirements of field high-temperature wear condition and can be effectively prolonged in service life.

Description

technical field [0001] The invention belongs to the field of mechanical processing technology, and in particular relates to a method for preparing a high-temperature wear-resistant liner by plasma arc cladding. Background technique [0002] With the development of industrial modernization, there are more and more high-temperature production environments, such as blast furnaces, coke ovens, continuous casting production systems in the metallurgical field, refining and synthesis systems in the petrochemical field, etc. Generally, the operating temperature of these high-temperature occasions can reach Above 800°, this working condition puts forward higher requirements for the high-temperature liner in work: it is required to meet high temperature resistance, oxidation resistance, wear resistance, high temperature impact resistance and other properties. The selection of high-temperature liners directly affects the safe production and continuous production of enterprises, and al...

AI Technical Summary

Problems solved by technology

However, these materials have high cost, poor high-temperature oxidation resistance, especially low high-temperature wear resistance and high-temperature impact resistance, resulting in low service life of high-temperature liners, affecting continuous production of enterprises, and increasing production costs.

[0003] In recent years, a lot of research work has been carried out at home and abroad to address the problems of low life and high cost of high-temperature linings, but they mainly focus on the research of a single material

Since the performance of a single material in terms of strength, toughness, hardness, high temperature resistance, wear resistance and oxidation resistance cannot be taken into account, the developed single material high temperature liner is not due to the shock of cooling and heat under the actual complex high temperature conditions on site. Cracking is due to high temperature oxidation failure, low high temperature wear resistance, high cost and low reliability, which cannot meet the needs of modern enterprises