Industry News

What are the manufacturing processes of the radiator


This is an excellent heat dissipation material widely used in modern heat dissipation. Most of the industry uses 6063 T5 high-quality aluminum, whose purity can reach more than 98%. It is favored by major manufacturers because of its strong heat conductivity, low density and low price.

According to the thermal resistance and heat generation of Intel and AMD CPUs, aluminum extrusion manufacturers develop corresponding molds to heat aluminum ingots to a certain temperature, so that their physical morphology can be changed, and then come out of the molds to obtain various raw materials for heat sinks we want; Then it can be used by cutting, trenching, grinding, deburring, cleaning and surface treatment.

Aluminum casting radiator

Although the price of aluminum extruded heat sink is low and the manufacturing cost is low, due to the limitation of the soft aluminum material itself, the ratio of its fin thickness to fin height generally does not exceed 1:18. Therefore, PC manufacturers have put forward a more appropriate scheme to increase the number of fins by increasing the heat dissipation area and keeping the heat dissipation space unchanged; Bend the fins to increase the heat dissipation area; Heat the aluminum ingot from solid to liquid, pass through the mold, and then cool it to become the heat sink we want.

Aluminum cutting radiator

Although the effect that this aluminum extrusion cannot achieve is solved in terms of heat dissipation area, the precision of the mold now directly affects the overall shape and heat dissipation capacity of our radiator, so more manufacturers begin to think of using precision machining tools to directly cut the aluminum ingots into the shape we want, so that no deformation will occur during the processing, It will not allow impurities to enter the heat sink during aluminum extrusion, and it can also maximize our heat dissipation area.

Copper cutting radiator

The aluminum extruded heat sink that has been used for such a long time, no matter how our processing technology is changed, it is difficult to meet the increasing heat output of CPU. Some manufacturers have to spare no expense in cost and seek copper instead of aluminum. Since the thermal conductivity of copper is far greater than aluminum, the thermal conductivity is multiplied, which is beneficial to our heat dissipation; However, because the hardness of copper is far greater than that of aluminum, it is a severe test for the manufacturing process during the processing. Therefore, the traditional extrusion process can no longer be applied to copper, and has to be processed in this way.

Aluminum and copper stack heat sink

One thing worth our attention is that cost and profit are always the ultimate goal pursued by manufacturers, so major manufacturers began to come up with a more optimized scheme, which is to make copper and aluminum sheets into heat sinks of various shapes we want by folding and pressing them, and then connect them with appropriate heat sink baseplates by welding, which not only meets our requirements for heat dissipation, It also speeds up the progress of our production, making mass production easier

Copper embedded radiator

The most perfect solution of this compromise solution should be the copper inlaying technology initiated by AVC. This is a harmonious unity of the advantages of copper, such as high heat conduction speed, high density and strong heat absorption capacity, and the advantages of traditional aluminum extrusion, such as light density, low price and convenient mass production