Lightweight high manganese steel liner for crusher and preparation method thereof

Abstract

The invention discloses a light-weight high manganese steel lining plate for a crusher and a preparation method of the light-weight high manganese steel lining plate. The light-weight high manganese steel lining plate comprises the following chemical components in percentage by mass: 1.0-1.5 percent of C, 0.3-0.5 percent of Si, 18-26 percent of Mn, 6-8 percent of Al, 0.002-0.005 percent of B, 0.01-0.03 percent of RE (La and Ce mischmetal), less than 0.01 percent of P, less than 0.03 percent of S and the balance of Fe and inevitable impurities, and the density of the lining plate is 6.6-7.1 g / cm<3>. The preparation method comprises the steps of smelting, casting, separating, heat treatment and shot blasting, and the density of the light-weight high manganese steel lining plate is 9-15 percent lower than that of a conventional high manganese steel lining plate. Besides, the adopted steel has excellent hardness and impact ductility, and the wearing resistance of the adopted steel is 40 percent or above higher than that of ordinary high manganese steel. The light-weight high manganese steel lining plate has the advantages of low cost, high wearing resistance and low density.

Description

technical field [0001] The invention belongs to the technical field of mineral processing equipment, in particular to a light-weight high-manganese steel liner for a crusher and a preparation method thereof. Background technique [0002] With the continuous expansion of the production scale of enterprises and the reduction of ore grades, the production capacity of crushers is getting larger and larger, and my country is gradually moving towards the direction of large-scale crushers; however, the world's energy is becoming increasingly scarce, resulting in rising fuel prices and saving energy. Consumption has become the consensus of countries all over the world. Energy consumption and steel consumption in the process of crushing materials have become the focus of investigation and research in many countries. Traditional liner materials are generally made of high manganese steel, and the annual consumption of high manganese steel liners in the country reaches millions of tons....

AI Technical Summary

Problems solved by technology

In recent years, some ultra-high manganese crusher liners have appeared, such as the patent of publication number CN102433508A, which provides an ultra-high manganese crusher liner and its preparation method; although its wear resistance is 30% higher than that of ordinary high manganese steel , but when used on large crushers, due to the heavy weight of the liner, the energy consumption is increased, resulting in the comprehensive effect of the increased wear resistance being not so obvious; and patent No. CN1080327 discloses a low alloy crusher wear-resistant liner and manufacturing process, the invention has higher production cost due to the addition of expensive molybdenum and copper

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