Two-fluid bimetal compound poured crushing hammer manufacturing method

Abstract

The invention relates to a two-fluid bimetal compound poured crushing hammer manufacturing method. The method comprises the steps that casting is conducted, specifically, a hammer handle pouring system and a hammer pouring system are arranged on a sand mold; high-chromium cast iron and low-carbon alloy steel are smelted, a hammer handle part adopts a low-carbon alloy steel material, and a hammer part adopts a high-chromium cast iron material; a hammer handle is poured at first, according to the weight of the hammer, after 3-15 seconds, a binding agent is added to the low alloy steel liquid surface of a sand mold cavity, and then high-chromium alloy is started to be poured; after pouring is completed, still standing is conducted, after molten steel is cooled and solidified, a semi-finished compound hammer can be obtained; and the semi-finished compound hammer is subjected to heat treatment, and the compound hammer product is obtained finally. By adding the binging agent in the process, a fusion layer which is compact in structure, free of shrinkage cavities, loose and high in strength is formed on an interface of two metals, and the binding strength of the two metals is improved.

Description

technical field [0001] The invention relates to the field of hammer crushers, in particular to a hammer used in the hammer crusher, and in particular to a method for manufacturing a double-liquid bimetal compound casting crushing hammer. Background technique [0002] In metallurgy, mining, building materials and machinery industries, many machine parts are in service under extremely harsh working conditions, which requires not only high wear resistance, but also high strength and toughness of the parts. In this regard, the bimetal wear-resistant material produced by composite casting technology can make the casting have high wear resistance and high strength and toughness at the same time, which can greatly improve the service life of machine parts. [0003] Bimetal composite casting technology refers to casting two or more metal materials with different structures and performance characteristics into a complete casting, so that different parts of the casting have different ...

AI Technical Summary

Problems solved by technology

[0005] However, the existing manufacturing methods of bimetallic composite hammers, whether it is solid-liquid bimetallic process or double-liquid bimetallic process, only rely on the mutual fusion and penetration of two metals to combine, due to the difference in properties of the two metals , resulting in many casting defects in the bimetal joint and low strength of the joint. In production, the process is difficult to control and the yield is low; in use, the bimetal joint is prone to damage and collapse. , even breaking

This phenomenon greatly reduces the service life of the hammer head, and sometimes the equipment is damaged due to the breakage of the hammer head

Images