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Several cooling methods commonly used in die casting molds

2023-10-17

For the life of the die casting mold, it is also important to do a good job of cooling in time when the temperature of the die-casting mold is high. The cooling methods of die-casting molds include water cooling, air cooling, heat pipe cooling and indirect cooling.

(1) Water cooling: A cooling water channel is set on the die-casting mold, so that the circulating water flows into the forming insert or core, and the heat is taken out of the mold. Water cooling has high cooling efficiency and can effectively reduce the temperature of the cavity surface, but it increases the complexity of the die-casting mold structure, and is mainly used for molds that require large heat dissipation. In order to prevent condensation on the surface of the cavity, the temperature of the cooling water should be higher than the room temperature.

(2) Air-cooling: For parts in the die-casting mold that are difficult to cool with water, air-cooling can be used, and air-cooling can be blown by a blower or compressed air. Air cooling can not only cool the die-casting mold, but also blow the paint evenly, disperse the volatile gas of the paint, and reduce the pores of the casting. The cooling temperature of air cooling is much lower than that of water cooling.

(3) Heat pipe cooling: mainly used for small parts that are difficult to directly cool with cooling water. In the small parts that need to be cooled, use the special heat of the heat pipe to export, and then use the cooling water to cool the heat pipe.

(4) Indirect cooling: Alloys with high heat transfer coefficient (ammonium bronze, tungsten-based alloy, etc.) can be used for indirect cooling at the hot joint of the mold temperature machine die-casting mold. Comes with cooling fins at the end for enhanced cooling.

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