There are more and more models of profile radiators, insert radiators, and electronic radiators, with hundreds to thousands of specifications, which are commonly used in electronics, household appliances, mechanical equipment and other fields. The main function is to absorb the heat generated by the electronic components, and then transfer and radiate it, thereby reducing the temperature of the components and avoiding damage to the components due to too high operating temperature; currently commonly used heat sink materials mainly use aluminum alloy and copper Alloy, and other materials. Let's introduce it below.
The material can be aluminum or copper, and it can be embossed into the desired shape. This process has low cost, is suitable for mass production, and can be used for components with low thermal density. The embossed components also have the convenience of automation in assembly, so the cost can be further reduced.
The extrusion manufacturing method is to force the material to flow into the die hole under high pressure to form the solid into a continuous strip of constant cross-section. Extrusion is the most widely used method in the manufacture of radiators, and the investment in equipment is underlined. Rectangular needle-shaped heat sinks can be produced by cross-cutting, and jagged fins can be produced to increase performance by 10-20%, but it will reduce the speed of extrusion. The aspect ratio of the extrusion can be as high as 6, and the aspect ratio can be as high as 10 when using a special mold design.
Casting electronic radiator
The molten metal is pressurized into a metal mold to produce components of precise dimensions. This technology can produce high-density needle-shaped heat sinks. High fixture cost is a big cost investment, but low component cost suitable for mass production can make up for this part. The thermal conductivity of the cast radiator will be reduced by the infiltration of gas during solidification, resulting in porosity.
This is a new heat sink manufacturing method. The fins are processed with special tools, so that the arc-shaped precision slices are cut out from metal blocks. Because the fins and the metal blocks are the same material, there is no heat sink or folding heat dissipation. Disadvantages of the device. Due to the improvement of process technology, high-density fins can also be manufactured at present. Currently, 6063 aluminum is used, and the cutting of copper is still in the experimental stage. Since the cutting depth can be quite low, the thickness of the fin can be thinner, and a lighter and higher performance heat sink can be designed.