Polishing process for hard alloy mold

The invention discloses a polishing process of a hard alloy mold, and relates to the technical field of hard alloy mold machining, the hard alloy mold is firstly subjected to oil removal and water removal treatment, then rough polishing is carried out, finally, the hard alloy mold is placed in a closed space, and sand blasting polishing is carried out on the hard alloy mold; and the sand blasting and polishing process is adjusted according to the roughness and/or hardness of the hard alloy mold. The novel die polishing process is adopted, so that the surface of the die is smoother, the consistency is better, the problem that a deep and small groove cannot be polished in a traditional mode is solved, meanwhile, the repair amount of the die is reduced, and the working efficiency of bench workers is improved; the whole finish degree of the mold finished product is improved and the service life is prolonged; the surface defects of numerical control blade pressing are obviously reduced, the surface quality is obvi