The correct preheat production plan of the mold

1.If the die casting mold needs to be preheated before production, the cooling water of the mold shall be temporarily closed, and then the water volume shall be gradually adjusted according to the mold temperature. When preheating the mold, be careful not to make the mold local overheating (dark red phenomenon), in case the mold annealing.

2.When preheating the mold, it is forbidden to use two-block injection or pressurized injection.It must be heated effectively without damaging the mold according to the design requirements of the mold.For those with thermostatic tubing, use a mold temperature controller for heat preservation and heating.If there is no thermostatic tubing, gas can be used to increase the temperature. When heating, it should be done gently, evenly and slowly so that the temperature rise of the core and the core seat can be synchronized with the expansion.When the mold temperature preheats to about 220°, run each moving part to prevent the normal operation from being affected by the phenomenon of tight biting due to thermal expansion.After producing about 10 molds at low pressure, the high pressure production parameters were adjusted and qualified products were extracted.In the early stage of die casting production, it was found that the sprue part and the casting part of the finished product had the phenomenon of aluminum sticking pull caused by impact.If there is running material, should be cleaned up in time, otherwise the more tight the pressure, the more difficult to clean up.