Aluminum alloy die-casting includes aluminum, magnesium, zinc alloy series die-casting products, which are widely used in automobiles, telecommunications, motorcycles, home appliances and other industries. Aluminum alloy die-casting release agent is a necessary additive in the production process. Due to the different volume and size of the product, the different complexity of the structure, and the different post-processing requirements of the product, the requirements for the release agent are also different.
The zinc alloy material is heated and melted (aluminum melting point 660.4 °C), injected into the mold cavity under high pressure in the liquid state, and the mold ejector is opened and the mold ejector is removed in a short time. In order to ensure the smooth release of the product, the release agent must be sprayed on the surface of the mold cavity before injection.
Aluminum alloy die casting release agents must meet the following requirements:
1. Oil. As an effective material for metal-to-metal barriers, silicone fluids are the ideal choice. The fluid must be resistant to high temperatures and do not affect post-processing properties (e.g. for aluminium coatings).
2. Water-based. Due to the high temperature of the mold, any solvent-based release agent is not suitable. Using water as the dispersion medium, the water evaporates rapidly in a high-temperature environment, and the effective material for demoulding is evenly distributed on the surface of the mold cavity. Uniform film formation, strong adhesion, high temperature erosion resistance, good demoulding performance.
3. Emulsion. Choose the right emulsifier emulsifier to emulsify silicone oil to prevent it from carbonizing at high temperatures. to keep the surface of the product and the cavity clean.
4. There is no corrosion on castings and mold equipment. The wheel gallery of casting products is clear, the surface is smooth and traceless, and does not affect the coating. Volatiles are smokeless, non-toxic, do not pollute the environment, and do not harm the health of operators.