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

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