Black Anodized Aluminum Extruded Radiator

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   Although the heat sink is a small part, it is an important device for dissipating heat from the heat-prone electronic components in the electrical appliance. For example, the computer will generate a lot of heat  for a long time running, the heat sink in the CPU can play the role of cooling, which can prolong the life of the computer. So how is a heat sink made and how does it work?

  Heat sinks are available in a variety of material options. which are silver, copper, aluminum and steel. Different materials have important influence factors on the heat dissipation effect of the radiator. From the analysis of thermal conductivity, silver is the best, but silver is not the first material because the price of silver is too expensive. Copper's thermal conductivity is a second rank, almost twice than aluminum, but the density and cost is much higher than aluminum, so aluminum is the most commonly used material. Regardless of price or thermal conductivity, aluminum is the first option.

 

How does heat sink work?

The working principle of the radiator is very simple. which is by increasing the surface area. Therefore, the requirement for the heat sink is that the heat absorption is very fast, and the heat loss is also very fast, which has a good heat transfer effect.

 

How to build a anodized aluminum extruded heat sink?

The extrusion process is available for mass production of aluminum heat sink extrusions, with less investment, short development cycle and low production cost. A commonly used aluminum extrusion material is aluminum 6063, which has good thermal conductivity. Its working principle is to heat the aluminum ingot to 520-540℃ under high pressure, so that the aluminum liquid flows through the extrusion die with grooves to make the heat sink. Then cut the extruded heat sink profile, profile grooves and other processing processes, which are the heat sinks we usually see.

Aluminum extrusion process to make fins. The ratio of the thickness and length of the fins is limited within a certain range, the ratio of pin-fin type. It is one of the main criteria for testing aluminium extrusion technology. The larger the PIN-FIN ratio, the larger the effective cooling area of the heat sink. It is difficult to improve the heat dissipation area in a limited space, so the heat dissipation effect of the aluminum extrusion heat sink is not very ideal. In heat sink processing, the aluminum extrusion process is mainly used to make layered fins or cylindrical fins

Anodizing is a very common surface finish in heat sink area, anodizing is an electrolytic oxidation process in which the surface of aluminum and aluminum alloys is usually transformed into a layer of oxide film, which has protective, decorative and other functional properties. So anodizing process can extend the heat sink life and improve the reliability of heat sinks.

 

Product specifications

Varieties of heat sink

Thermal simulation

Factory and workshop

Extruding process

 

Certificates

 

Sinda Thermal is a leading thermal manufacturer in China, our factory was founded in 2014, and located in Dongguan city, China, we are offering varieties of heatsinks and other precious metal parts. Our plant possesses 30 sets advanced and high precious CNC machines and stamping machines, also we have many testing and experiment instruments and professional engineering team, so our company can manufacture and provide high quality products with high precision and excellent thermal performance. Sinda Thermal is devoted to a range of heat sinks which are widely used in new power supply, New energy vehicles, Telecommunications, Servers, IGBT, and Madical. All the products accord with Rohs/Reach standard, and the factory is qualified by ISO9001 and ISO14001. Our company has been a partner with many customers for good quality, excellent service and competitive price. Sinda Thermal is a great heat sink manufacturer for the global customers .

 Why choose us

1, High precise and adequate facilities;

2, Professional design and engineering team to provide excellent service;

3, Mature production process to manufacture the best heat sinks;

4, Perfect quality system to make sure the quality of the products;

5, More competitive price than trade companies.

 

FAQ

Q: Are you a manufacturer or a trade company?

A: We are a self-owned factory.

Q: How many employees in your company?

A: over 100 people.

 

Q: Can I visit your factory?

A: Yes, welcome! also you can visit our factory online by VR.

 

Q: Can you help to design a heat sink for me?

A: Yes, we can do the OEM and ODM.

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