Different castable has different sintering temperature, only heating to the sintering temperature of the bonding strength. When it is formed, it can be hardened or sintered according to the hardening characteristics.

Pouring material is mainly used in direct contact with the molten part so particles and powder material to high density, volume stability and corrosion resistance, pouring material for induction furnace have insulation. Bonded castable choice is also very important, commonly used acidic castable sodium silicate, silicate, silica gel binder, wherein the dry castable with alkaline borate; magnesia castable used chloride and sulfate etc.. The dry castable with solvent amount of iron, chrome castable used mirabilite. In addition, the choice of the binder of the castable material should be appropriate, without the binder, and only with a small amount of cosolvent.