The workshop master of Enchuang Aluminum Alloy Die Casting Factory told me: During the die casting process, the mold requires a certain temperature, and the temperature of the mold is an important factor in the die casting process. The mold temperature generally refers to the surface temperature of the mold. Its standard state should be about 1/3 of the pouring temperature of the alloy liquid. The mold temperature greatly affects the mechanical properties, dimensional accuracy and life of the die-casting mold. Enchuang Aluminum Alloy Die-casting Factory Workshop Operate strictly according to the specifications.

To obtain high-quality castings with stable quality, the mold temperature must be strictly controlled within the optimal process range, which requires the application of a mold cooling system to ensure that the mold works within a constant temperature range.

Enchuang Aluminum Alloy Die Casting Factory adopts two methods: First, the mold temperature control adopts a proprietary mold heating and cooling device system that does not use fuel as a medium. The second is to set up a cooling device in the die-casting mold to adjust the heat balance of the die-casting mold. For large die-casting molds, due to their large volume, large heat capacity, and long cycle time, the die-casting mold heats up slowly. At this time, there is no need to set up a cooling channel near the cavity, and only a cooling channel is set around the sprue sleeve to reach the die-casting mold. The purpose of thermal balance. Sometimes the mold cavity is complex and the temperature difference between different parts is large, so the die-casting mold is not only equipped with cooling channels, but also heating channels, thus forming a cooling-heating system to adjust the heat balance of the die-casting mold. At this time, the working medium is mostly oil. .

There are two main cooling methods for molds in Enchuang aluminum alloy die-casting factory: air cooling and water cooling.

1. Air cooling method
The wind power of the air cooling method comes from a blower or compressed air machine, which relies on the wind power to enhance the heat dissipation of the mold. There is no need to install a cooling device in the mold. Therefore, the structure is simple, but the cooling speed is slow and the production efficiency is low. It is suitable for molds that require small heat dissipation.

2. Water cooling method
Add a cooling water channel in the mold to allow circulating water to flow into the molding insert or core. The cooling speed is faster than air cooling, the production efficiency is high, and the control is convenient. It is suitable for molds that require large heat dissipation.

Based on the wall thickness characteristics of the castings and the mold structure, Enchuang Aluminum Alloy Die Casting Factory adopts a point cooling structure for centralized circulation cooling in some parts. This cooling method has strong local cooling intensity and troublesome cooling channel cleaning. It is suitable for cooling important parts of the mold. , some complex molds use point cooling structure to cool many places. For the cooling of other parts, the easiest way to clear the channel is to process through holes along the cavity, and use copper tubes to connect the outside for circulating cooling. This cooling method is very common.

The cooling water channel is arranged in the area with the highest temperature and concentrated heat in the mold cavity, and the flow path must be smooth. The diameter of the cooling water channel is Φ15~20mm for large molds and Φ8~10mm for small molds. The distance between the hole wall and the gate or cavity wall is generally 10~15mm.