Aluminum Parts CNC Machine Tool Processing requires attention to material cooling, mainly for the following reasons:
First, after aluminum products are cast, there will be a certain degree of porosity and crystal defects inside, accompanied by very high temperatures and residual thermal stresses. If these internal stresses and structural defects are not eliminated through proper cooling treatment, the internal structure of the aluminum parts will be unstable, which will affect their mechanical properties. Specifically, excessively high temperatures will cause the temperature of aluminum parts to drop slowly, making it easy for aluminum parts to deform, crack or have other quality problems during the cooling process.
Second, proper cooling treatment can effectively eliminate or reduce intergranular corrosion inside aluminum parts and reduce thermal stress and residual stress. This is because during the casting process of aluminum parts, the aluminum liquid is impacted by high-temperature liquid aluminum, and certain internal residual stress and thermal stress will be generated after solidification. Through proper cooling, these residual stresses can be effectively released, reducing the risk of cracks and deformation on the surface of aluminum parts.
Third, cooling treatment can also eliminate porosity and crystal defects generated during the casting process. Excessive temperature will prevent the gas and impurities in the aluminum liquid from being fully discharged, forming porosity and crystal defects. Proper cooling can accelerate the solidification process of aluminum liquid, making it easier to discharge gas and impurities, thereby improving the quality and surface quality of aluminum parts.
Fourth, from the perspective of safe production, if aluminum liquid is always in a high temperature state, it is easy to cause dangerous situations such as fire and explosion. Through cooling treatment, the temperature of aluminum liquid can be reduced and the probability of safety accidents can be reduced.
In summary, attention should be paid to material cooling during Aluminum Parts CNC Machine Tool Processing, mainly because proper cooling treatment can eliminate residual stress and thermal stress inside aluminum parts, reduce the risk of cracks and deformation on the surface of aluminum parts; eliminate porosity and crystal defects generated during casting, improve the quality and surface quality of aluminum parts; at the same time, reduce the temperature of aluminum liquid and reduce the probability of safety accidents. Therefore, cooling treatment is an indispensable and important link in the processing of aluminum products.
