Identify the Advantages of Different Radiator Aluminum Profiles and Heat Sinks

There are various types of mechanical equipment, electronic and electrical radiators. Different radiator profiles have different advantages and disadvantages in playing different roles. The aluminum industry summarizes their respective characteristics.

1.

Extruded aluminum profile:

The fins and the base plate are integrated without splicing. The heat conduction inside the radiator is uniform and the thermal conductivity is high. The disadvantage is that it is limited by the extrusion process, and the profile size and fin spacing, thickness and plate height are limited.

2.

Semi-extruded aluminum profile

Semi-embedded: Due to the process limitations of extruded aluminum profiles, the spacing of the plates cannot be too narrow, and the aluminum plate is inserted between the two plates by inserting and pressing, and tightly fixed.

Because half of the fins are inserted, and the aluminum plate is not integrated with the base plate, the heat transfer aluminum profile processing efficiency of the inserted part is not as good as one, and the heat resistance is greater than that of pure extruded aluminum. This kind of radiator can reduce the cross-sectional size of the profile through the extrusion process of the aluminum profile radiator, and the extruded aluminum profile cannot process radiator products.

3.

Fin splicing type

First make the fins, then stack the fins together, press them through pressure treatment, and tightly combine the parts together. This process can be used as a radiator of any width and height. The disadvantage is that the fins are separated from the fins, the thermal resistance is large, and the thermal conductivity is greatly reduced.

4.

Insertion type

It consists of a base plate and multiple heat sinks. First, the blade side is milled into the blade slot, and one end of the fin is inserted into the blade slot and pressed. In this type of radiator, only a small aluminum profile processing part at the end of the aluminum part is inserted into the base plate, the contact heat conduction area is limited, the thermal resistance is too large, and the consistency of the thermal resistance parameters is also poor. In theory, this method is not limited to any size of process radiator, the processing is simple, and the market price has a comparative advantage.

The material of the radiator of the heater we often use is made of aluminum profiles. Its main function is to dissipate heat for the heater. Because the material of the aluminum profile is sold relatively cheaply in the market and the heat dissipation effect is better, it is a better choice to use aluminum profiles as heat sinks.

The copper and aluminum alloy are the common material used heat sink. Both of them have its own advantages and disadvantages.

Copper has good thermal conductivity, but it is expensive, difficult to process, too heavy (many pure copper heat sinks exceed the weight limit of the CPU), small heat capacity, and easy to oxidize in air.

Aluminum alloys are used to provide sufficient hardness instead of pure aluminum which is too soft to be used directly. The advantages of aluminum alloys are low price and light weight, but the thermal conductivity is much worse than copper. Some heat sinks take their strengths and embed a copper plate on the base of the aluminum alloy heat sink.

Aluminum profile heat sinks have the characteristics of beautiful appearance, light weight, good heat dissipation performance, and good energy saving effect. The surface of the processed aluminum profile heat sink is anodized for surface treatment to increase the corrosion resistance, wear resistance and appearance of the aluminum.

Aluminum profile heat sinks are widely used in:

machinery, automobiles, wind power generation, engineering machinery, air compressors, railway locomotives, household appliances and other industries due to their superior performance, aluminum profile processing.