一、概述随着冶金、电力、建筑水泥等工业的迅速发展,粉碎原料(矿石)、燃料和在制品的球磨机上的研磨介质——钢球的需要量也在不断增加。以旧的生产方法——铸造和锻压来制造钢球,由于生产率低、质量差、体力劳动强度大、成本高等缺点,已不能适应目前生产的需要。生产钢球的一种新工艺——热轧方法,在我国已被采用,并在不断地推广,特别是无产阶级文化大革命以来,得到迅 I. Overview With the rapid development of industries such as metallurgy, electric power, building cement and so on, the demand for grinding steel ball, which is used to crush raw materials (ore), fuel and in-process ball mill, is also increasing. With the old production methods - casting and forging to manufacture steel balls, because of the low productivity, poor quality, physical strength, high cost shortcomings, can no longer meet the needs of the current production. A new process for producing steel balls, the hot-rolling method, has been adopted in our country and has been constantly promoted, especially since the Great Proletarian Cultural Revolution.