国内外矿山机械中破碎和研磨设备的耐磨材料过去大都是用高锰钢。近年来,随着技术的发展,出现了一些新的材料,例如低合金钢、合金铸铁等。我国工人阶级在毛主席革命路线指引下,发扬“独立自主,自力更生”的精神,近年来也有不少创造,既节约了合金材料,又延长了易磨损件的寿命。现将一些情况汇总如下,其中引用的国外资料,本着“洋为中用”的精神只是作为借鉴。 At home and abroad mining machinery crushing and grinding equipment, wear-resistant materials used to be mostly high manganese steel. In recent years, with the development of technology, there have been some new materials, such as low alloy steel, alloy cast iron and so on. Under the guidance of Chairman Mao’s revolutionary line, our working class has promoted the spirit of “independence, self-reliance and self-reliance.” In recent years, many of our working classes have also created the alloy materials and prolonged the life of wearing parts. A few things are summarized as follows. The foreign materials quoted here refer only to the spirit of “using foreign products for intermediate purposes”.