Crusher duplex metal abrasion-proof backing block and manufacture method thereof

Abstract

The invention discloses a crusher double-metal wear-resistant lining board and a method for manufacturing the same. Materials of a wear-resistant block comprise (by weight percentage): 1.8 to 2.4 percent of C, 0.4 to 1.2 percent of Si, 0.6 to 2.0 percent of Mn, 13 to 22 percent of Cr, 0.2 to 0.4 percent of Mo, less than 0.06 percent of p, less than 0.06 percent of s, and the balance being Fe and inevitable impurities. Materials of a board body comprise: 0.9 to 1.1 percent of C, 1.0 to 1.3 percent of Mn, 0.4 to 0.8 percent of Si, less than 0.08 percent of p, less than 0.06 percent of s, 0.02 percent of Re and inevitable impurities. The wear-resistant block is cast at a temperature of between 1,360 and 1,400 DEG C. The board body is cast at a temperature of 40 DEG C higher than the normal casting temperature. The wear-resistant block and the board body are heated for 1 hour to 300 to 400 DEG C, heated to 1,000 to 1,050 DEG C at a speed of 50 to 80 DEG C per hour, kept at the temperature for 3 to 4 hours, and quenched in water for water toughening. The method can ensure that interfaces of two alloys are combined completely, the internal stress is distributed uniformly, the product is wear-resistant and free from cracks, the service life of the product is prolonged, and the consumption of spare parts is reduced.

Description

technical field [0001] The invention belongs to the technical field of crushers, and in particular relates to a method for manufacturing a bimetallic wear-resistant liner used in mine rough crushers. Background technique [0002] Lining plates on machinery such as crushing, milling, and flotation, which are widely used in mining, metallurgy, coal, and refractory energy industries, are the main wear-resistant parts. At present, the materials of liners used in various industries mainly include high manganese steel, Several single metal materials such as multi-element low-alloy steel and chromium-based white cast iron; high-manganese steel is generally used under high-load and high-impact stress conditions, and Mn13 is the most commonly used in mine crushers. High-manganese steel Mn13 It is a traditional wear-resistant alloy. The structure after water toughening treatment is single-phase austenite, which has excellent toughness. At the same time, this material has strong deform...

AI Technical Summary

Problems solved by technology

[0005] The present invention discloses a bimetallic wear-resistant liner for a crusher and a manufacturing method thereof. And the process problems existing in casting and heat treatment, so as to improve the wear resistance and service life of the rough crusher liner, improve equipment productivity and crushing efficiency