... 3.High temperature resis high purity graphite crucibles for melting high temperature metals A crucible is a ... kneading, second grinding, moulded forming, baking, impregnation with pressure, second baking, graphitization in high temperature, refinement ... kneading, second grinding, isotropic forming, baking, impregnation with pressure, second baking, graphitization in high temperature, refinement ...