四 新的压铸技术 压铸与其它铸造方法比较,铸件质量高,价格低廉,但适用范围还不广泛。从压铸生产和设计者的立场来看,问题归纳如下: (1)质量不稳定,可靠性差; (2)铸件气孔多,难以确定解决的措施; (3)生产率难以进一步提高; (4)强度要求高时,不能进行固溶化处理; Four new die-casting technology compared with other casting methods, casting high quality, low price, but the scope of application is not extensive. From the die-casting production and designer standpoint, the problems are summarized as follows: (1) the quality is unstable and the reliability is poor; (2) there are many holes in the casting and it is difficult to determine the solution; (3) the productivity is hard to be further improved; (4) Requirements are high, can not be solution treatment;