Aluminum heat sink

Aluminum alloy profiles are widely used in the manufacture of high-power heat sinks, mainly due to their good thermal conductivity, light weight, high strength, and easy processing. In order to manufacture efficient high-power heat sinks, the following are some key methods and steps:

1. Material selection

High thermal conductivity aluminum alloy:

Select aluminum alloys with excellent thermal conductivity, such as 6063, 6061 or 1100 aluminum alloy, to ensure rapid heat conduction.

2. Design optimization

Heat sink design:

Design complex heat sink structures, such as fins, needles or sheets, to increase the heat dissipation area.

Use special-shaped fins such as trapezoidal and wavy shapes to improve air flow and heat dissipation efficiency.

Overall structural design:

Consider the air flow path, optimize the shape and layout of the heat sink, and ensure good air convection.

Perform thermal simulation analysis on the heat sink, optimize the fin spacing and shape, and ensure uniform heat dissipation.

3. Production process

Extrusion molding:

Produce aluminum alloy profile heat sinks through extrusion process to ensure product consistency and precision.

Use high-quality molds to ensure the complexity and fineness of the heat sink structure.

Welding technology:

For complex structures, friction stir welding, brazing and other processes can be used to combine different components into a whole to improve the structural strength and thermal conductivity of the radiator.

Surface treatment:

Anodize the radiator to enhance corrosion resistance and improve heat dissipation performance.

Spraying thermal conductive coating or thermal conductivity enhancement coating can be used to further improve heat dissipation efficiency.

IV. Assembly and installation

Close contact:

Ensure close contact between the radiator and the heat source (such as power devices), and use thermal grease or thermal conductive gaskets to reduce thermal resistance.

Fixed method:

Use screws, clips or clamps to firmly fix the radiator to ensure that it will not loosen during operation.

V. Testing and optimization

Performance test:

Perform strict thermal performance tests on the finished radiator to measure the heat dissipation capacity and temperature distribution to ensure that it meets the design requirements.

Improvement and optimization:

According to the test results, adjust the design and production process to further optimize the performance of the radiator.

VI. Other considerations

Environmental adaptability:

Consider the use environment of the radiator, design dustproof, waterproof and other characteristics to ensure stable operation under various conditions.

Cost control:

On the premise of ensuring heat dissipation performance, choose economical and efficient production processes and materials to control costs.

Examples in practice

CPU radiator:

Adopt aluminum alloy heat sinks with multi-layer thin-sheet structure, and use fans to assist heat dissipation to ensure efficient heat dissipation.

LED lamp radiator:

Adopt large-area fin structure extruded from aluminum alloy profiles to improve heat dissipation efficiency and extend LED life.

Power electronic equipment radiator:

Adopt aluminum alloy cooling plate, coolant inside, combined with fin heat dissipation, suitable for high-power inverters, power modules, etc.

Through the above methods and steps, efficient aluminum alloy profile high-power radiators can be manufactured to ensure that the equipment maintains good heat dissipation performance during high-power operation, extend equipment life, and improve reliability.