磨球是矿山、水泥、发电等行业球磨机的磨耗品。国内每年要消耗近一百万吨磨球,其中铸球约占五十万吨。目前各种材质的铸造磨球大多是采用砂型铸造方法生产的,少部分由金属型(多为合金铸铁型)生产。两种铸造方法相比,砂型的主要优点是投资少、上马快、工艺简单。金属型的优点是工艺出品率高;可利用余热进行热处理,有利于降低能耗及提高工效,可细化铸球组织,提高内在质量;外观质量好。由于生产铸球的 Ball mill is mine, cement, power generation and other industries ball mill wear goods. Nearly one million tons of balls are consumed each year in China, of which about half a million tons are cast. At present, most of the casting balls of various materials are produced by the sand casting method, and a small part is produced by the metal type (mostly alloy cast iron type). Compared with the two casting methods, the main advantage of the sand mold is less investment, quick loading and simple process. Metal type has the advantage of high production rate; can be used for heat treatment of waste heat, help to reduce energy consumption and improve work efficiency, can refine the ball structure, improve the intrinsic quality; appearance and good quality. Due to the production of cast ball