Aluminium Heat Sink  Manufacturers, Traders, Suppliers

Cooling technology Renewal and repair of:

• Aluminium cooler for water, oil and charge air
• Heat exchanger
• Copper/brass radiators for old- and youngtimers

Our areas of application are very diverse, for

• Forwarding agencies
• Public Transport Services
• Car and truck workshops
• Agricultural cooperatives
• Mechanical Engineering
• Final consumer

Fischer Elektronik, founded in 1968, is one of Europe’s leading manufacturers of electro-mechanical components such as heatsinks, enclosures, connectors and thermal interface materials.
At our headquarters in Lüdenscheid, North Rhine-Westphalia, which covers an area of 28,000 m², over 400 employees ensure manufacturing under optimal conditions.
The application of the most modern techniques and production processes as well as the continuous development of new products are of utmost importance to us.
Our standard product portfolio comprises over 75,000 items, which can be easily traced in our well-known catalogues.
Besides our vast standard portfolio, we are specialized in offering customer-specific solutions, either based on our standard items or completely new developments.
Our extraordinary production depth allows to put almost every customer demand into practice.
Highest quality and environmental awareness belong to our company’s philosophy and are practiced throughout the entire enterprise
Since 1994, Fischer Elektronik is certified according to ISO 9001 for its quality management system and has obtained its certificate according to ISO 14001 for its environmental management system shortly after in 1998. Since 2011, Fischer Elektronik is also certified according to DIN ISO/IEC 27001 for its information security management system..

A heat dissipation device that compresses aluminum ingots into specific shapes through high temperature and high pressure. It has the characteristics of lightweight, high thermal conductivity, and customization
Mainly made of 6061 and 6063 aluminum alloys, with a thermal conductivity of 160-180 W/m · K

1、 Material and mold parameters
Material selection:
The heat transfer coefficient of pure aluminum AL1070/1050/1010 reaches 22670W/m · K, alloy aluminum 6063 is 180W/m · K, and die cast aluminum A380 is only 96W/m · K.
The cold heading process can achieve ultra-thin fins of 0.7mm, with a spacing of 1mm and a length to diameter ratio of 1:50 or more (extrusion process usually 1:25).
Mold requirements:
Use H13 steel or tungsten steel molds (hardness HRC45-50), and polish the working belt to Ra ≤ 0.8 μ m.
Equipment weighing over 3000 tons can form large-sized radiators of 2600mm × 260mm in one go.
2、 Cold heading process parameters
Molding parameters:
The forging force is 100-1000kN, the servo drive accuracy is ± 0.01mm, and the recommended temperature for warm forging is 580-780 ℃.
The three-dimensional intake design is superior to traditional two-dimensional extrusion, improving heat dissipation efficiency.
Welding process:.
Nitrogen protected brazing/vacuum brazing is suitable for thin-walled parts (such as AL3003/4045), while friction stir welding is suitable for thick walled parts.
3、 Performance and Testing
Heat dissipation performance:
Pure aluminum cold heading heat sink can reduce the volume of 5W LED lamps by 30% and increase the power to 7W.
Quality inspection:
Dimensional tolerance ± 0.1mm, surface roughness Ra ≤ 0.8 μ m, requires air tightness testing (leakage rate ≤ 0.1%)
4、 Process optimization direction
Mold lifespan: Using tungsten steel cold extrusion molds (such as YG8) can improve wear resistance
Structural innovation: Increasing heat dissipation area through anisotropic processing (such as hexagonal column fins).

1. Heat sink of electronic devices
Computer hardware: The CPU/GPU heat sink achieves a dense fin structure through extrusion technology, increasing the heat dissipation area by more than 30%.
LED lighting: High thermal conductivity aluminum extruded profiles effectively reduce the temperature of lamp beads and extend their lifespan to 50000 hours.
5G base station: The RF module heat sink adopts a multi cavity extrusion design to meet the high power density heat dissipation requirements.
2. New energy vehicles
Battery pack cooling: Aluminum extruded profiles serve as the liquid cooling plate substrate, with a thermal conductivity of 200W/(m · K) and a weight 60% lighter than copper.
Motor controller: Integrated extruded heat sink achieves dual modes of air cooling/liquid cooling, reducing operating temperature by 15 ℃.
3. Industrial equipment
Power electronics: Inverters and transformer radiators achieve complex cross-sections through extrusion technology, with a withstand voltage rating of IP67.
Automated machinery: The servo drive heat sink adopts modular extrusion design, supporting rapid assembly.
4. Other fields
Photovoltaic inverter: Lightweight aluminum extruded heat sink suitable for outdoor installation, with weather resistance of over 10 years.
Rail transit: IGBT radiators for trains achieve high reliability through extrusion and welding processes.

From mold design and manufacturing, from raw material die casting, CNC machining/lathe, surface treatment (oil injection and powder injection) integration

In electrical design, heat sink and thermal design are an important link.
We can provide customers with various types of heat sink design, production and free thermal design services.
Including thermal design, thermal simulation, various types of heat sink design, water cooling plate water channel design, etc.
We have more than 20 years of experience in heat sink design and production.
We have extrusion machines, friction stir welding, CNC, skived fin equipment, insert fin equipment and other professional equipment to produce various types of heat sinks.
We can bring the following value to our customers:
1. Shorten the customer's new product design cycle and reduce the workload of the customer's design team;
2. Reduce customers’ new product testing costs.
3. Reduce customers’ heat dissipation costs through lightweight design of heat sinks.
Our technical team provides heat sink products and thermal design services to Hitachi, Delta, FUJI, ABB and many other companies.