I. First, select the right steel material for the mold base and mold core cavity. For example, to produce a pair of one-to-four turnover box molds, a pre-hardened steel with a hardness higher than 33 must be used as the mold base, and then suitable mold standard parts are selected.
Second, the hardness of each steel must be controlled, not too hard.
. Then, the friction and guide parts of the turnover box mold must be finished, and no manual operation can be used.
4. Finally, some mold companies will use the return material for mold injection. At this time, we must consider the following two points: A. How to ensure that small impurities in plastic do not damage the core and cavity; B. How to prevent impurities from entering the mold Cavity.