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目前,球磨机中的磨球,大多仍沿用高锰钢。由于高锰钢属加工硬化型耐磨材料,在高冲击下,表面形成硬化层,产生优异的耐磨性能。然而,在球磨机破碎中,磨球以滚动碰撞为主,冲击性不大,高锰钢表面难以形成硬化层。体现不出耐磨的优越性。国外七十年代已研制出高铬系白口铁,并应用于工业生产。如美国Climax钼公司的Cr_(15)5MO_3和Cr_(15)MO_2Cu_1。国内七十年代末,某些单位也致力于高铬白口铁的研究,由于普遍存在破碎率高等问题,影响了
At present, the ball mill ball, most still use high manganese steel. As the high-manganese steel is a hardened wear-resistant materials, the high impact, the surface hardening layer, resulting in excellent wear resistance. However, in the ball mill crushing, grinding ball to the main rolling impact, impact is not large, high manganese steel surface hard to form a hardened layer. Reflect the superiority of wear-resistant. Seventies abroad has developed a high chromium white iron, and used in industrial production. Such as the United States Climax molybdenum company Cr_ (15) 5MO_3 and Cr_ (15) MO_2Cu_1. In the late 1970s, certain units were also devoted to the research of high-chromium white-tin. Due to the prevalence of higher crushing rate, some affected