在机械加工中,人们总想尽可能地少切削甚至无切削,这样能节省许多材料和加工工时,降低成本,提高劳动生产率。在塑料等非金属材料成型工艺中,首推注塑成形。从我们日常生活中的缸盆杯匙到电视机外壳、汽车仪表板,都是在大大小小的注塑机上一次成型的。 在金属材料的成型工艺中,铸造是最大宗最常用的一项。铸造的 In machining, people always want to cut as much as possible without cutting, which can save a lot of materials and working hours, reduce costs and improve labor productivity. In plastic and other non-metallic materials molding process, the most important injection molding. From our pot mugs in our daily life to TV housings, automotive dashboards, are molded on injection molding machines of all sizes. In the metal forming process, casting is the largest one of the most commonly used. Casting