已经有次观看 wencong在2014-07-04发布

Channel：Non-ferrous Metal 标签： Casting,  mechanical  manufacturing  process 

简介：Mechanical manufacturing process based casting material is cast as a solid but more than the original metal is heated to a liquid form (for example: tungsten, molybdenum, copper, iron, aluminum, tin, lead), and the mold material may be sand, or metal ceramics. In response to the different requirements, the methods used will be different.