Radiator bottom design

Most people believe that fins are the key to heat dissipation, but in fact, the bottom fins are also an important part of heat dissipation that cannot be ignored. The bottom design of aluminum radiators should adhere to the principle of gradually thinning from the heat source to both sides, in order to ensure that the heat absorbed by the heat source can be quickly transferred to the surrounding thinner parts, achieving efficient heat dissipation. Otherwise, the heat from the heat source cannot quickly diffuse around, which will affect the radiator to further absorb the heat from the heat source.

Radiator fin design

Designing the radiator in the shape of a fin is not only to increase the contact area with the heat source and absorb more heat, but also to increase the contact area between the radiator and the air for faster heat dissipation into the air. Some people here wonder if the thicker the fins, the better the heat dissipation effect? In fact, this is not the case. The overall area of the radiator is limited. The more fins there are, the larger the contact area to absorb more heat. However, this also means that the spacing between fins becomes smaller. At this point, the air flow speed in each channel decreases, making it more difficult for the radiator to dissipate heat into the air. If the fins become thicker, the corresponding number of fins will decrease, and heat absorption may not necessarily increase. Therefore, when producing aluminum profile radiators, manufacturers need to make reasonable and precise calculations for the design of fins based on demand, and strictly follow the planning for production. Only in this way can the finished product meet the heat dissipation needs in a good condition.

Aluminum extrusion forming technology

It is not difficult to see that the radiator has extremely high requirements for shape design and dimensional accuracy, and the radiator needs to be error free during the molding process to achieve the expected heat dissipation effect. Aluminum extrusion forming is a method of processing aluminum profiles for parts by applying strong pressure to the aluminum alloy material placed in the mold cavity, causing directional deformation of the aluminum alloy, thereby obtaining the required cross-sectional shape, size, and possessing certain mechanical properties. The use of aluminum extrusion molding technology in the radiator can achieve high precision, good surface quality, and stable overall structure of the finished product, ensuring the qualification rate of the product. The traditional die-casting manufacturing and welding technology cannot achieve such good results. Not only is it difficult to meet the accuracy requirements, but the welded joints are prone to corrosion and affect the overall stability of the aluminum profile structure.

Surface treatment of aluminum profiles

The factors that affect the heat dissipation effect of aluminum profile radiators are not only the area, shape, and convective area with air, but also the thermal radiation ability, which cannot be ignored. Radiative heat dissipation is a heat dissipation method in which infrared radiation is emitted from the surface of a higher temperature object and heat is received by the surface of a lower temperature object. Aluminum profile radiators use radiative heat dissipation to transfer high heat from the heat source to the lower temperature part, achieving balanced heat dissipation and improving heat dissipation performance. However, ordinary aluminum radiators do not perform well in radiative heat dissipation. Instead, anodic oxidation is used to form an oxide film on the surface of aluminum radiators to enhance their thermal radiation ability and improve their heat dissipation performance.