The heat sink plays an important role in the construction of the radiator. In addition to the active heat dissipation of the fan, the quality of a radiator depends largely on the heat absorption and heat conduction capabilities of the heat sink itself.

XNUMX. According to the materials used, it can be divided into:

a. Aluminum heat sink

b. Copper heat sink

c. Copper-aluminum combined heat sink

d. Heat pipe radiator

two. According to the process technology, it can be divided into:

a. Aluminum extruded heat sink:

This is an excellent heat dissipation material widely used in modern heat dissipation. Most of the industry uses 6063 T5 high-quality aluminum material, and its purity can reach

More than 98%, its thermal conductivity is strong, density is low, and price is cheap, so it has been favored by major manufacturers. Based on Intel and AMD CPU

Considering the thermal resistance value and heat generation, aluminum extrusion manufacturers develop corresponding molds to heat the aluminum ingot to a certain temperature to make it physically shape

The state is changed, and then after coming out of the mold, we get the various heat sink raw materials we want; then they are cut, grooved, and punched

It can be used after grinding, deburring, cleaning and surface treatment.

b. Aluminum cast heat sink:

Although aluminum extruded heat sinks are cheap and have low manufacturing costs, they are limited by the soft texture of the aluminum itself.

The ratio of chip thickness to fin height generally does not exceed 1:18, so PC manufacturers continue to increase the heat dissipation area, and the heat dissipation space

Under the requirement of constant time, manufacturers have proposed a more suitable solution, encrypting the fins to increase the number of fins; bending the fins,

Thereby increasing the heat dissipation area; heating the aluminum ingot from solid state to liquid state, passing through the mold, and then cooling becomes the heat sink we want.

c. Aluminum cutting heat sink:

Although the heat dissipation area has solved the effect that this kind of aluminum extrusion cannot achieve, the precision of the mold now directly affects our

The overall shape and heat dissipation capacity of their heat sinks have led to more manufacturers beginning to think of using precision cutting tools of processing machinery to directly cut aluminum ingots into blocks.

Cut to the shape we want, so that there will be no deformation during the processing, and various impurities will not be included in the aluminum extrusion process.

Entering the heat sink can also maximize our heat dissipation area.

d. Copper cutting heat sink:

The aluminum extruded heat sink has been used for such a long time. No matter how we change our processing technology, it is difficult to meet the ever-increasing number of CPUs.

In order to generate heat, some manufacturers have to spare no expense in terms of cost and seek copper instead of aluminum. Since the thermal conductivity of copper is much greater than that of aluminum, the thermal conductivity

The doubling of the force is of great benefit to our heat dissipation; however, since the hardness of copper is much greater than that of aluminum, during the processing process,

It is a severe test for the manufacturing process. Therefore, the traditional extrusion molding process can no longer be applied to copper, and has to become this cutting process.

way to process.

e. Aluminum and copper stack heat sink:

One thing worthy of our attention is that cost and profit are always the ultimate goals pursued by manufacturers, so major manufacturers have begun to

We came up with a more optimized plan. We folded copper and aluminum sheets to make heat sinks of various shapes we wanted, and then combined them with appropriate

The various heat sink bottom plates are connected together by welding, which not only meets our heat dissipation requirements, but also speeds up our production.

production progress, making mass production easier

f. Copper-aluminum welded heat sink

g. Embedded copper heat sink:

The most perfect solution to this compromise solution is AVC's pioneering copper inlay technology. This is because copper conducts heat quickly and has high density.

The advantages of strong heat absorption capacity are harmoniously unified with the advantages of traditional aluminum extrusion: light density, low price, and convenient mass production;

h. Copper-inlaid heat sink:

Another solution is that FOXCONN pioneered the use of copper blocks at the bottom of the radiator in contact with the CPU. Copper absorbs heat quickly and conducts heat efficiently.

It has strong characteristics and can quickly transfer a large amount of heat energy generated by the CPU operation to the nickel-plated copper block, and between the copper block and the aluminum extruded heat sink

Thermal paste is used to tightly combine with it, so that a large amount of heat energy can quickly diffuse to the aluminum extruded heat sink and be taken away by the rotation of the fan.

i. Shaping heat sink:

Today, as heat dissipation requirements continue to increase, smart Japanese people have begun to think of using thin and dense heat dissipation fins and huge heat dissipation bottom plates.

Pressure to fit. This technology can be arbitrarily combined and matched with copper and aluminum fins and copper and aluminum base plates, and it also effectively avoids

During the welding process, the uneven thermal conductivity of various solder pastes creates new thermal resistance disadvantages. Allowing customers to have more choices and thermal solutions

Diversity of programs. However, due to the particularity of its processing, current mass production still has the problem of high cost.

j. Copper aluminum and heat pipe embedded heat sink:

Heat pipes are a major discovery in the field of heat transfer in recent years. They were also the first to be used for heat dissipation in notebook computers and major high-end communications industries.

The main heat dissipation material. Due to its amazing heat conduction speed and physical properties of recycling, our heat dissipation becomes easier and

Creates endless possibilities.