Shell refractory

Refractory material is the basic material of investment casting shell. The main properties of the shell, such as high temperature strength, thermochemical stability, thermal expansion, air permeability and shell removal, are all affected by the characteristics of refractory material.The surface quality of shell and casting is also affected by the size distribution and purity of refractories.Therefore, in order to obtain high quality shell, it is appropriate to choose good quality, stable performance, abundant resources, moderate price, harmless to human health refractory.

There are many kinds of refractories used in investment casting shell, which can be roughly divided into: refractory for shell surface layer, refractory for shell reinforcement layer and refractory for ceramic core.