To improve the function of the die casting mold, "heat treatment" is required, including quenching, annealing, and tempering. After these heat treatments, the die casting mold factory can effectively improve the service life and stability of the die casting mold.
Die casting mold factories need to use special heat-resistant mold steel when producing the die casting mold. Compared with ordinary carbon steel, it takes much longer to reach the top of the S curve for this kind of steel. Therefore, this kind of mold steel needs only sufficient heat treatment. The mold can be fully heated, and cooling in the air can save time and reduce processes.
However, the die casting mold factory found that if the diecast model block made of this material is heated to high temperature in the air without protection, it will appear to be scrapped due to oxidative decarburization or burnout of the surface.
Therefore, mold factories need to prevent oxidative decarburization during the heat treatment of die-casting molds. For this reason, die-casting mold factories often purchase vacuum furnaces, salt bath furnaces, inert gas (N2 or Ar) furnaces, and other equipment. Just pay attention to the heating temperature to obtain the effect of non-oxidation decarburization.