本文评价了美国各种工业型磨矿球的冲击和磨损性质。采用美国八个主要制造厂的球进行了实验室试验,包括煅造钢球、铸造钢球和合金的白口铁球。试验时重复冲击直至破裂或冲击300,000次为止。也进行了触点磨损试验。结果表明,球的冲击寿命有很大不同,由几千次到500,000次。较次的工业球经实验室回火热处理后,其寿命增加s This article evaluates the impact and wear properties of various industrial ball mills in the United States. Laboratory tests were conducted using balls from eight major U.S. plants, including white iron balls forged steel balls, cast steel balls and alloys. Repeated impact test until rupture or impact 300,000 times so far. Contact wear tests were also performed. The results show that the ball’s impact life varies widely, from thousands to 500,000. Less industrial ball by the laboratory tempering heat treatment, its life expectancy increased s