Dalian Aluminum Die Casting Release Agent Application Technology Sharing

Dalian aluminum alloy die-casting includes aluminum, magnesium and zinc alloy die-casting products, which are widely used in cars, telecommunications, motorcycles, household appliances and other professions. Aluminum alloy die-casting release agent is a necessary auxiliary in the production process. Because the volume and size of the products are different, the degree of structural disorder is different, and the post-processing requirements of the products are different, the requirements for release agents are also different.

The zinc alloy material is heated and melted (aluminum melting point 660.4 ℃), and injected into the mold cavity under high pressure under liquid state, and the mold ejector is opened and ejected in a short time. In order to ensure the smooth release of products, it is necessary to spray release agent on the surface of mold cavity before injection.

It is necessary to satisfy the following requirements for aluminum alloy die-casting release agent:

1. Oil. As a useful barrier material between metals, organosilicon oil is the ideal choice. This silicone oil must have the characteristics of high temperature resistance without affecting the post-processing performance (such as aluminum product coating).

2. Aqueous. Because the mold is at high temperature, any solvent-based release agent is not suitable. With water as the dispersion medium, in the high temperature environment, the water will evaporate rapidly, and the useful materials for demoulding will be evenly distributed on the surface of the mold cavity. Uniform film formation, strong adhesion, high temperature scouring resistance, good demoulding performance.

3. Emulsion. Select appropriate emulsifier to emulsify silicone oil to prevent its carbonization at high temperature. In order to maintain the cleanliness of the product and mold cavity surface.

4. There is no corrosion to castings and mold equipment. The contour of casting products is clear, and the surface is smooth and clean without trace, without affecting the coating. Volatiles are smokeless, non-toxic, non-polluting to the environment and damaging to the health of operators.