Views: 40 Author: Site Editor Publish Time: 2021-11-11 Origin: Site
Let's look at the characteristics of aluminum profiles: aluminum heat sinks have the characteristics of beautiful appearance, light weight, good heat dissipation performance, and good energy-saving effect. In addition, the decorative performance of aluminum profile is very strong: when aluminum is used for decoration or some specific occasions, its surface needs to be processed by anodizing and painting to obtain the corresponding color and surface structure. Aluminum profile has better corrosion resistance. Good, its anodizing performance, surface treatment performance, and coating performance are all excellent.
In China, extruded aluminum heatsink is widely used in industries such as machinery, automobiles, wind power generation, construction machinery, air compressors, railway locomotives, household appliances, etc. due to its superior performance. Without exception, custom heat sinks are becoming more and more popular to use aluminum profiles, and aluminum extrusion molding is mainly used. This is because the size of the blanks formed by extrusion is good, the production cycle is short, and the cost is relatively low.
The heat dissipation performance of aluminum is three times that of steel. The thermal conductivity of aluminum is 167W/m.K. The thermal conductivity of steel is 50W/m.K. W is heat; M is material thickness; K is temperature. The thermal conductivity coefficient is defined as: per unit length, per K, how many W of energy can be transmitted, the larger the value, the better the thermal conductivity. We can see that the thermal conductivity of aluminum is 3 times that of steel, indicating that the thermal conductivity of aluminum is 3 times that of steel.
Moreover, anodized aluminum heat sink not only has good heat dissipation, but also has good thermal conductivity, pressure resistance, and metal thermal strength. The thermal strength of aluminum is 2.277W/Kg℃, while 0.4W/Kg℃ of cast iron is 0.76W/Kg℃ of steel, and 1.728W/Kg℃ of copper and aluminum. Aluminum has large heat dissipation capacity, fast heat dissipation, and efficiency. The biggest feature of the aluminum heat sink, the appearance is electrostatic sprayed, the design is beautiful, and the decoration is good. The general evaluation is: comprehensive production does not pollute the environment or water quality. The heat dissipation strength is four times that of cast angle. The light weight is one-tenth that of cast iron. Beautiful and generous, occupying little room space, environmental protection and energy saving. It is in line with the "lightweight, efficient, environmentally friendly, and energy-saving" character requirements for the development of heat sinks in my country.
From the aspect of making custom heat sink, aluminum alloy is the best choice of material. Whether it is energy saving, material saving, decoration, price, weight, etc., all have advantages. That is, copper-aluminum, steel-aluminum, stainless steel-aluminum and other composite products with aluminum all contain aluminum. The problem is that it is not as good as steel pipes from the angle of bending, but the heat dissipation of steel pipes is definitely not as good as that of aluminum; from the perspective of price, it is a special point; from the perspective of anti-corrosion, steel is Phosphate first and then anti-corrosion, the process is cumbersome, while aluminum alloy is oxidized anti-corrosion or direct anti-corrosion. Therefore, heat sinks made of aluminum alloy are superior to custom heat sinks made of other materials in any respect.