Wear resistance steel medium alloy lining board

Abstract

The invention provides a wear resistance steel medium alloy lining board, comprising the following compositions in percentage by weight: 0.65 to 0.95 percent of C, 1.8 to 2.5 percent of Cr, trace Mo, trace Ni, trace W, 0.6 to 0.8 percent of Mn, 0.4 to 0.6 percent of Si, less than or equal to 0.035 percent of P, less than or equal to 0.025 percent of S, and trace Re. Each composition is selected according to the content required by the wear resistance steel medium alloy lining board, and the lining board is cast. The lining board can reach excellent mechanical performance. Compared with the existing corrosion resistance lining board, the lining board reduces cost, and improves the service life by twice.

Description

Technical field: [0001] The invention relates to a wear-resistant steel, in particular to a wear-resistant steel medium-carbon alloy lining plate for a steel ball coal mill. Background technique: [0002] Steel ball coal mills are widely used in cement, mining, electric power and other industries. As the main wearing part, the liner has a huge annual consumption. At present, the materials used in the steel ball coal mill liners used in our country are mainly high manganese steel, and alloy steel materials are also used to make them. [0003] Due to the low initial hardness of high manganese steel, the wear resistance of high manganese steel lining is guaranteed by work hardening caused by high impact, but the impact hardening speed of most high manganese steel lining is lower than its wear speed, Therefore, the wear resistance of the high manganese steel liner will be greatly reduced; moreover, the yield strength of high manganese steel is low, and the high manganese steel...

AI Technical Summary

Problems solved by technology

[0003] Due to the low initial hardness of high manganese steel, the wear resistance of high manganese steel lining is guaranteed by work hardening caused by high impact, but the impact hardening speed of most high manganese steel lining is lower than its wear speed, Therefore, the wear resistance of the high manganese steel liner will be greatly reduced; moreover, the yield strength of high manganese steel is low, and the high manganese steel liner is prone to plastic deformation during use, which shortens the life of the workpiece and makes it difficult to disassemble and replace the liner

[0004] Alloy steel linings, especially thicker alloy steel linings, can meet the requirements of high hardness, high toughness and high wear resistance, but some precious iron alloys are added in the manufacturing process of alloy steel linings, such as adding more than 0.6% Ferromolybdenum, etc., resulting in high cost of the liner, it is not easy to promote the use of large-scale