Liner plate for vertical coal grinding and crushing machine and processing technology thereof

Abstract

The invention discloses a liner plate for a vertical coal grinding and crushing machine and a processing technology thereof. The liner plate comprises the following components in percentage by mass: 2.4-3.2% of C, equal to or less than 1.0% of Si, 0.5-1.5% of Mn, 18.0-23.0% of Cr, equal to or less than 3.0% of Mo, 0.08% of P, 0.08% of S, equal to or less than 2.0% of Ni and equal to or less than 1.2% of Cu. According to the liner plate and the processing technology thereof, the problem about hardenability, creep resistance and wear resistance of wearproof super-high manganese alloy steel is well solved, the initial hardness and the overall mechanical performance of the super-high manganese alloy steel are improved, the various technic indexes of a semi-autogenous mill are improved, the overhauling times and time are reduced to avoid repeated operations, the cost is reduced, the benefit is increased, sufficient toughness and impact resistance are realized, and the mechanical property and the wear resistance of the liner plate can be improved at the same time; and multicomponent alloy elements can realize solid solution in high-manganese austenite, so that the liner plate is intensified, and the strength performance including the yield strength and the tensile strength of the liner plate are improved.

Description

technical field [0001] The invention belongs to the field of liner plate processing, and in particular relates to a liner plate for a vertical mill coal crusher and a processing technology thereof. Background technique [0002] The semi-autogenous mill is the main crushing and grinding equipment in the production of thermal power, mining, chemical, metallurgy and other industries at home and abroad, and the liner and grinding ball are the main working parts of the semi-autogenous mill in normal operation. With the development of modern production, the diameter of semi-autogenous mills is getting larger and larger, and mills with a diameter of about five meters have been widely used in production, so the quality requirements for liners and grinding balls are getting higher and higher. Due to the long-term harsh working conditions of liners and grinding balls, the amount of maintenance and replacement is quite large, which not only wastes manpower, material resources, and fina...

AI Technical Summary

Problems solved by technology

Due to the long-term harsh working conditions of liners and grinding balls, the amount of maintenance and replacement is quite large, which not only wastes manpower, material resources, and financial resources, but also directly affects production efficiency and civilized production of modern enterprises.

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