所谓精密铸造亦是指：用精密铸型获得精密铸件的铸造方法。又叫失蜡铸造,它的产品精密、复杂、接近于零件最后形状，可不加工或很少加工就直接使用，故熔模铸造是一种近净形成形的先进工艺。它包括：熔模铸造、陶瓷型铸造、金属型铸造、压力铸造、消失模铸造。 其中较为常用的是熔摸铸造：选用适宜的熔模材料制造熔模；在熔模上重复沾涂料与撒砂工序，硬化型壳及干燥；再将内部的熔模溶化掉，获得型腔；焙烧型壳以获得足够的强度，烧掉残余的熔模材料，；浇注所需要的金属材料；脱壳后清砂，从而获得高精度的成品。Ancient China: Prince afternoon tripod, copper cut-off, bronze lion, are a masterpiece of casting. 40 years since the 20th century, investment casting for industrial production, the half-century has been developing a faster pace. In particular, the rapid development of European and American countries. Now Casting for the aerospace, weapons departments, almost used in all industrial sectors, especially electronics, petroleum, chemical, energy, transportation, light industry, textiles, pharmaceuticals, medical equipment, pumps and valves and other departments. China's rapid development in recent years. Investment casting investment casting technology to not only produce small castings, and can produce large castings, the largest size profile Castings nearly 2m, while the minimum wall thickness less than 2mm. While castings have become more sophisticated, in addition to alignment tolerances,

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