Copper Aluminum Heat Sink
Precision machining I Extreme heat dissipation efficiency I CNC machining
Bimetallic thermal conductivity optimization: copper thermal conductivity>390W/m·K, aluminum lightweight + thermal conductivity combination, higher heat dissipation efficiency
Low thermal resistance, fast heat transfer: suitable for high heat flux environments such as power modules, semiconductor equipment, etc.
Product Introduction
We are a manufacturer specializing in aluminum profile extrusion and CNC precision machining, and have rich experience in the production of copper-aluminum composite heat sinks. The copper aluminum heat sink products we provide are widely used in high-power LED lighting, power electronics, IGBT modules, communication equipment and other fields. While taking into account cost control and improved thermal conductivity, they achieve the dual advantages of lightweight structure and strong heat dissipation.
Processing details and technical difficulties
Case: Copper-aluminum hot-plug heat sink for high-power IGBT module
Size: 220mm × 140mm × 35mm
Material: 6063-T5 aluminum alloy substrate + 12 φ8mm copper ferrules
Process: welding + CNC contour milling + fine hole tapping + anodizing
Processing difficulties and solutions
Hot-plug copper tube positioning accuracy requirements are high
→ Use precision drilling machine to open holes, with tolerance controlled at ±0.02mm, and use special copper tube positioning fixtures to ensure that the coaxiality and spacing of the tube holes are consistent.
Copper and aluminum have different expansion coefficients, and stress cracks are prone to occur after hot plugging
Through temperature control insertion + secondary aging treatment, internal stress is effectively reduced.
After CNC processing, copper oxidation should be avoided to contaminate the anode surface of aluminum parts
The copper surface is shielded after the ferrule, and only the aluminum surface participates in anodizing.
This batch of copper aluminum heat sink products finally passed the full inspection of military customers, with excellent stability and 28% improvement in thermal conductivity, and was successfully applied to the heat dissipation module of rail transit inverters.
Our advantages
Full-process integrated manufacturing: profile extrusion + CNC processing + copper welding + surface treatment full-process automatic control
Strong customization ability: support drawing customization, small batch proofing, fast delivery
Quality assurance system: dimensional tolerance, thermal resistance test, and bonding strength are all qualified
Export experience: products are exported to Germany, Japan, the United States, Southeast Asia and other places
Application areas
High-power LED lighting module
Power supply module (IGBT, MOSFET)
New energy vehicle control system
Communication base station module heat dissipation
Industrial laser/medical equipment
Industrial control equipment/servo drive system
Copper aluminum heat sink is the first choice for heat dissipation of high heat density electronic equipment. Its excellent heat diffusion ability and structural plasticity can significantly extend the service life of the equipment and ensure stable performance.
We not only provide a heat sink, but also provide you with a complete set of thermal management solutions for high heat density equipment. If you have project requirements or technical consultation, please send us drawings or specifications, and we will provide detailed quotes and suggestions within 24 hours.
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