sand casting  molding method 
  
Solidification of liquid metal forming mainly refers to the method of forming the sand casting  process, it is the first to create a shape, size and requirements of the corresponding parts of the mold cavity, and sand casting  filling of liquid metal into the cavity, until the cooling after solidification, and access to parts (known as sand casting ) method.

A lot of solidification method of forming, in accordance with liquid metal into the mold filling methods can be divided into Gravity Casting (liquid metal filling the cavity by its own gravity), low pressure die casting, squeeze casting, stainless steel casting pressure casting (liquid metal under pressure from a certain filling cavity) and so on. According to the formation of the different mold materials sand casting can be divided into a type (such as sand casting, ceramic-type casting, shell casting) and the permanent type (such as metal type casting). For sand casting, in accordance with the different sand binder, a clay sand, resin sand, silicate sand, die casting in China such as O modeling methods are based on manual modeling and mechanical modeling. In addition, some special sand casting thing forming solidification, but also the use of continuous casting (such as sand casting a long cross-section), centrifugal casting (cylindrical casting), it is type casting, investment casting and other methods.