1、零件的材料及机械性能要求。零件材料的工艺特性和力学性能大致决定了毛坯的种类。河北铸造厂家介绍(shao)例如(ru)铸(zhu)铁零件(jian)(jian)(jian)用(yong)(yong)(yong)铸(zhu)造毛坯；钢(gang)质(zhi)零件(jian)(jian)(jian)当形(xing)状较简单(dan)且力学(xue)性(xing)能要求不(bu)高(꧟gao)时常用(yong)(yong)(yong)棒料，对于重要的钢(gang)质(zhi)零件(jian)(jian)(jian)，为获得良好的力学(xue)性(xing)能，应选用(🍃yong)(yong)(yong)锻件(jian)(jian)(jian)，当形(xing)状复(fu)杂力学(xue)性(xing)能要求不(bu)高(gao)时用(yong)(yong)(yong)铸(zhu)钢(gang)件(jian)(jian)(jian)；有色金属零件(jian)(jian)(jian)常用(yong)(yong)(yong)型材或铸(zhu)造毛坯。
