A heat sink is a passive heat exchanger that transfers heat by using increased surface area to maximize heat transfer. The heat sink is typically a metallic part which can be attached to a device releasing energy in the form of heat, with the aim of dissipating that heat to a surrounding fluid to prevent the device overheating. Aluminum alloy is hard enough and also cheap and light.
Tolerance of dimensions directly affect the heat sink overall modelling and heat capacity. CNC machining cutting will not appear in the process of machining deformation, won't make various impurities in the process of aluminum extrusion into the heat dissipation, at the same time maximize the cooling area.
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