Custom High-Performance Copper Heatsink Products, Factories
Product Description
Product Overview
Designed for high-power electronic devices, this copper heatsink maximizes thermal conductivity. Copper is notoriously difficult to machine due to its ductility ("gumminess"), but it offers superior heat dissipation compared to aluminum. This product showcases our ability to handle challenging materials for functional applications.
Manufacturing Process Insight
CNC Milling
We use sharp, polished carbide tools and specific cutting strategies to prevent the soft copper from sticking to the cutter (built-up edge).
Fin Machining
The tall, thin cooling fins are machined with high aspect ratios. We carefully control feed rates to prevent the fins from bending during the cutting process.
Flatness Control
The base contact area is fly-cut to achieve extreme flatness and a mirror-like finish, ensuring maximum thermal transfer efficiency with the CPU or heat source.
Key Features & Benefits
Superior Thermal Conductivity
Copper (approx. 400 W/m·K) transfers heat almost twice as fast as Aluminum.
Complex Geometries
CNC machining allows for custom fin shapes and mounting holes that extrusion cannot achieve.
Surface Protection
Can be treated with anti-oxidation coating or nickel plating to prevent tarnishing over time.
Application
Ideal for lasers, 5G base stations, and high-performance computing (HPC) cooling.
Technical FAQ
Q1Why choose CNC over extrusion for heatsinks?
A1: CNC allows for prototypes, low volumes, and complex 3D shapes (like pin fins) that extrusion cannot produce.
Q2Copper is expensive. Can you help reduce costs?
A2: We can suggest hybrid designs (Copper base + Aluminum fins) or optimize the design to reduce machining time.
Q3How do you prevent copper from oxidizing?
A3: We vacuum pack parts immediately after cleaning and can apply clear passivation or plating.
Q4How do you prevent thin cooling fins from bending during machining?
A4: High aspect ratio fins are carefully machined by controlling feed rates and employing specialized cutting strategies to ensure precise structural integrity.
Q5How is base contact flatness ensured for heat sources?
A5: The contact surface undergoes a precision fly-cutting process to achieve extreme flatness and a mirror-like finish, guaranteeing optimal thermal transfer efficiency.
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