随着现代科学技术的发展,对铸造生产提出了新的要求:不但要保证铸件内在质量,外部质量和工作性能,而且还要满足产品设计和用户提出的一些特殊要求(如品种、交货时间、价格等)。否则,将被其它工艺,如:冲压、精锻、粉末冶金、焊接、塑料制品等代替。 今后,越来越明确铸件是一种商品,可以供应外厂、也可以出口。因此铸件的商业竞争不仅 With the development of modern science and technology, new requirements are put forward for foundry production: not only the inherent quality, external quality and workability of castings but also the special requirements of product design and users (such as variety, delivery time , Price, etc.). Otherwise, will be other processes, such as: stamping, precision forging, powder metallurgy, welding, plastic products, etc. instead. In the future, it is becoming more and more clear that castings are a commodity that can be supplied to outside plants as well as exported. Therefore, not only the commercial competition casting