Heat sink is a kind of device for heating electronic components in electrical appliances, mostly made of aluminum alloy, brass or bronze made of plates, sheets, multi-sheets, etc., such as the CPU CPU in the computer to use a considerable heat sink, TV power tube, line tube, power amplifier tube in the power amplifier tube to use heat sink.

Unmanned vending machine shipping gearbox general heat sink in use to apply a layer of thermal grease on the contact surface between electronic components and heat sink, the absorbed heat is internally conducted to various parts of the heat sink, making full use of the larger heat capacity and surface area; A layer of copper is plated on the surface of the aluminum alloy heat sink, making the appearance of the product look like an all-copper heat sink. However, its interior is still aluminum alloy, so there is nothing special about its heat dissipation ability.

We must pay attention to such products, and merchants are likely to advertise products in pure copper materials, thereby increasing the selling price. The materials of memory heat sinks on the market can be basically divided into copper and aluminum alloys. Different materials have different thermal conductivity, which is related to the composition, density, molecular structure and other factors of the material. For the same material, the main factors affecting its thermal conductivity are density and humidity.