Aluminum die casting technology

In addition to aluminum extrusion technology, another process that is often used to make heat sink is aluminum die casting. By melting the aluminum ingot into liquid, filling it into the metal model, the heat sink can be made directly by die casting machine. The heat sink can be made into a variety of three-dimensional shapes by pressure casting method. The heat sink can be made into complex shapes according to the demand, and can also be made with the fan and air flow direction The heat sink with flow guiding effect can make thin and dense fins to increase the heat dissipation area, which is widely used because of its simple process. ADC12 is commonly used as die casting aluminum alloy. Due to its good formability, ADC12 is suitable for thin castings. However, due to its poor thermal conductivity (about 96 w / m.k), aa1070 aluminum alloy is widely used as die casting material in China. Its thermal conductivity is about 200 W / m.k, which has good heat dissipation effect.

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