... : heating is very uniformed, the welding will be good. Expansion is equaled in every direction, mould will be difficult to split and ... such as Monocrystalline Silicon,EDM(electrical discharge machining),kinds of graphite moulds in continuous casting,precious Metals Smelting,high temperature corrosion ... ,Cemented Carbide sinter,Vacuum Furnace and Diamond sinter and etc. exothermic welding graphite mould