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    Manufacturing process of heat sink
    source:admin time:2020-02-19
    Aluminum extruded heat sink
    This is an excellent heat dissipation material widely used in modern heat dissipation. Most of the industry uses 6063t5 high-quality aluminum material. Its purity can reach more than 98%. It has strong heat conduction ability, small density and low price, so it is favored by major manufacturers. According to Intel and AMD Considering the thermal resistance value of CPU and its calorific value, the aluminum extrusion manufacturer formulates the corresponding mold, heats the aluminum ingot to a certain temperature, so that its physical form can be changed, and then comes out of the mold to get the various radiator raw materials 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 fins is low and the manufacturing cost is low, due to the limitation of the soft aluminum material itself, the ratio of fin thickness to fin height is generally not more than 1:18, so PC manufacturers are increasing the heat dissipation area, and the heat dissipation space is unchanged, so manufacturers put forward a more appropriate scheme to encrypt fins, so as to Increasing the number of fins; bending the fins to increase the heat dissipation area; heating the aluminum ingot from solid to liquid through the mold, and then cooling it becomes the heat sink we want.
    Aluminum cutting radiator
    Although the effect that this kind of aluminum extrusion can't achieve is solved from the area of heat dissipation, the precision of the mold now directly affects the overall shape and heat dissipation capacity of our heat sink, so more manufacturers begin to think of cutting the block aluminum ingot directly to the shape we want with the precise cutting tools of the processing machinery, so that there will be no deformation in the processing process It will not let all kinds of impurities enter into the heat sink in the process of aluminum extrusion, but also can maximize our heat dissipation area.
    Copper cutting radiator
    No matter how to change our processing technology, it is difficult to meet the increasing heat output of CPU after using such a long time of aluminum extruded heat sink. Some manufacturers have to sacrifice aluminum for copper at no cost. Because the thermal conductivity of copper is far greater than that of aluminum, and the heat transfer energy is multiplied, which is of great benefit to our heat dissipation. However, the hardness of copper is far greater In aluminum, so in the process of processing, it is a severe test for the manufacturing process. Therefore, the traditional extrusion process can not be applied to copper, but has to be this way of cutting.
    Aluminum and copper stack fins
    One thing we should pay attention to is that cost and profit are always the ultimate goal pursued by manufacturers, so major manufacturers began to come up with more optimized plans, which are to make copper and aluminum sheets into the fins of various shapes we want by folding and pressing, and then connect them with the appropriate bottom plates of various fins by welding, so as to achieve our dispersion The requirement of heat also speeds up our production and makes mass production easier
    Copper heat sink
    The most perfect solution to this compromise is the copper inlay technology pioneered by AVC. This is a harmonious combination of the advantages of copper heat conduction speed, high density and strong heat absorption ability with the advantages of traditional aluminum extrusion, such as light density, low price and convenient mass production;
    Copper inlaid radiator
    Another solution is Foxconn's initiative to change the part at the bottom of the radiator which is in contact with the CPU into copper block, which is characterized by fast heat absorption and strong heat conduction ability. It quickly brings a large amount of heat generated by the CPU operation to the copper block with nickel plating on the surface, while the copper block and the aluminum extruded heat sink are closely combined with the heat transfer paste, so that a large amount of heat can quickly spread to the aluminum extruded heat sink and be fan And take it away.
    Slotted radiator
    With the increasing requirement of heat dissipation, the Japanese begin to think of using thin and dense fins to fit the bottom plate with great pressure. This technology can be used to combine and match copper and aluminum fins with copper and aluminum bottom plates at will, and also can effectively avoid the disadvantages of new thermal resistance caused by uneven heat conduction of various solder pastes during the welding process. Make customers have more choice and diversity of hot solutions. However, due to the particularity of its processing, the current mass production still has the problem of too high cost.
    Chimeric radiator
    Heat pipe is a major discovery in the field of heat transfer in recent years, and it is also the first major heat sink material used in notebook computers and high-end communication industries. Because of its amazing heat conduction speed and the physical characteristics of recycling, our heat dissipation becomes easier and creates infinite possibilities.

    Changzhou Yinxu Aluminum Co., Ltd

    No.20, Xinhu Road, Xueyan Town, Wujin District, Changzhou

    technical support:Souchi Tec

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