Usually, there are several ways of casting metal as below:
Three types of ordinaryincludes green , dry sand mold, Chemical hardening sand mold.
Specialcan be divided into natural mineral sand as the special casting of main molding materials according to the molding material(such as ， clay ，shell mold casting，negative pressure casting，full mold process, ceramic mold casting，etc. The metal as the main and special casting of mould material(such as metal mold casting, pressure casting ,continuous casting, low pressure casting , , etc.
Casting metal process usually includes:
Casting mould(Make liquid metal be containers of solid casting)
Mold can be divided into sand mold , metal mold, ceramic mould ,graphite type and so on according to the materials，can be divided into type of one-time , type of semipermanent and type of permanent according to the number of using
Melting and pouring Casting metal，casting metal（casting alloy）
There are mainly, and casting non-ferrous alloy.
The passage above talks about several ways of casting metal