一、前言反击式破碎机是冶金、建材行业中的常用设备,其中板锤是最易磨损的零件。目前在国内这些零件主要是用高锰钢(ZGMn13)制造的。然而,这种工况不足以使高锰钢件产生足够的加工硬化,因而高锰钢潜在的耐磨性并不能得到充分的发挥,使用寿命较短。不但材料费用增加,也降低了设备的运转率,增加了工人的劳动强度。近年来,西安交通大学等单位在建材行业中试用高铬耐磨铸铁板锤,使用寿命显著提高,给使用单位带来了较大的经济效益。不过从破碎的物料来看,主要是破碎石英 I. Introduction Impact Crusher is a commonly used equipment in the metallurgy and building materials industries, in which the hammer is the most easily worn parts. Currently in the country these parts are mainly made of high manganese steel (ZGMn13). However, this condition is not enough to make high manganese steel parts produce enough work hardening, so the potential wear resistance of high manganese steel and can not get full play, short service life. Not only material costs increase, but also reduce the equipment operation rate, increasing the labor intensity of workers. In recent years, Xi’an Jiaotong University and other units in the building materials industry in the trial of high chromium wear-resistant cast iron hammer, the service life significantly increased, to the use of units has brought greater economic benefits. However, from the broken material point of view, mainly broken quartz