Lining plate for large semi-autogenous mill and preparation method of lining plate

Abstract

The invention discloses a lining plate for a large semi-autogenous mill and a preparation method of the lining plate, and belongs to the technical field of metal casting manufacturing. The lining plate comprises the following components in percentage by weight: 0.60 to 0.80 percent of C, 1.80 to 2.20 percent of Cr, 0.30 to 0.60 percent of Mo, 0.30 to 0.80 percent of Si, 0.60 to 0.80 percent of Mn, 0.50 to 1.00 percent of Ni, 0.10 to 0.20 percent of V, 0.01 to 0.0.03 percent of Nb, 0.005 to 0.015 percent of Re, less than or equal to 0.025 percent of S, less than or equal to 0.025 percent of P and the balance of Fe and inevitable impurities. Through adjustment of raw material components and proportions and combination of a heat treatment method, the prepared lining plate has the characteristics of excellent wear resistance, good comprehensive mechanical properties, simple preparation method and low production cost, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a lining plate for a large-scale semi-autogenous mill and a preparation method thereof, and belongs to the technical field of metal casting manufacturing. Background technique [0002] Economic development is inseparable from the operation of mechanical equipment. At present, semi-autogenous mills are commonly used in metallurgy, mining and other fields. Impact and friction, and at the same time lift the material and the grinding body, so that it has a certain movement shape inside the mill to enhance the crushing and grinding effect of the grinding body on the material. The key parts of the mill. During the service process, the mill liner will be subjected to strong impact, wear and even corrosion, which will have a certain impact on the life and work efficiency of the liner. [0003] At present, the widely used lining material is high manganese steel series, which has a low yield strength, and the lining plate is easily defo...

AI Technical Summary

Problems solved by technology

During the service process, the mill liner will be subjected to strong impact, wear and even corrosion, which will have a certain impact on the life of the liner and work efficiency

[0003] At present, the widely used liner material is high manganese steel series, its yield strength is low, and the liner is easy to deform during use, often causing breakage, easy to deform during use, resulting in difficulty in maintenance and disassembly; although the wear-resistant cast iron series has high hardness, but it is brittle and easy to break, because it is not suitable for working conditions with strong impact

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