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Manufacturing process analysis of Copper Heat Pipe Heat Sink

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2025-02-12

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Manufacturing process analysis of Copper Heat Pipe Heat Sink

Copper Heat Pipe Heat Sink plays an important role in the field of modern heat dissipation, and its manufacturing process includes several key steps.

The first is the preparation of copper pipes. After high-quality copper materials are selected, copper is processed into heat pipes with suitable inner and outer diameters through a precise stretching process. This process requires strict control of dimensional accuracy, because the capillary structure inside the heat pipe and the flow channel size of steam and liquid directly affect the heat dissipation efficiency.

Copper Heat Pipe Heat Sink

The next step is the production of the capillary structure inside the heat pipe. Common ones are sintering type and groove type. The sintering type is to sinter metal powder on the inner wall of the heat pipe to form a fine porous structure. This structure can provide good capillary force to ensure the circulation of liquid working fluid in the heat pipe. The groove type is to form fine grooves on the inner wall of the heat pipe through mechanical processing to guide the liquid backflow.

In terms of sealing the heat pipe, special welding technology is used. High-purity welding materials and advanced welding equipment are used to seal both ends of the heat pipe to prevent internal working fluid leakage. This step requires strong welding and tight sealing. Any small leakage will cause the heat pipe to fail.

Then comes the manufacturing and assembly of the heat sink fins. The heat sink fins are usually made of aluminum and made into a specific shape through stamping or cutting processes. Subsequently, the heat pipe is tightly combined with the heat sink fins, which may involve finning or welding processes to ensure that the heat conduction efficiency between the heat pipe and the fins is maximized.

Finally, the surface treatment process. This includes grinding, polishing, spraying and other operations on the entire radiator. On the one hand, it can improve the appearance quality of the radiator, and on the other hand, the appropriate surface coating can help improve the corrosion resistance and heat dissipation performance of the radiator. Through the synergy of these manufacturing processes, the Copper Heat Pipe Heat Sink can efficiently dissipate heat and ensure the stable operation of various equipment.

Key words：

heat pipe

The influence of the size of Copper Heat Pipe Heat Sink on heat dissipation

Copper Heat Pipe Heat Sink

Aluminum vapor chamber

High-efficiency two-phase heat spreaders with lightweight aluminum construction. Designed for GPU, CPU, IGBT & power electronics and energy storage systems. Features: ultra-thin profile, high thermal conductivity, customizable size and shape.

Pulsating Heat Pipe (PHP)

Pulsating Heat Pipe (PHP, or Oscillating Heat Pipe) is advanced thermal management tech for high-power electronics, delivering high-efficiency, reliable heat sinks for aerospace, satellites, military equipment and VPX cooling chassis. Different from conventional heat pipes, PHP adopts a simple closed capillary loop charged with working fluid. Driven by fluid phase change, internal oscillation transfers heat rapidly with low flow resistance, requiring no pumps or moving components. Our optimized PHP heat sinks fit compact, mission-critical systems. Lightweight and miniaturized, they run stably and prolong device service life under extreme conditions such as microgravity and severe military environments. Core merits include outstanding heat conductivity, quick thermal response, robust environmental adaptability, low upkeep and broad operating temperature range.

Liquid Cooling Plate (LCP)

Liquid cold plates capture heat through the contact surface and remove heat via precision-engineered internal flow channels. Equipped with dedicated inlet and outlet ports, the liquid cold plate connects to external coolant pumps and cooling loop systems through tubing. The cooling liquid circulates continuously within the internal channel structure, rapidly and efficiently transferring heat away from heat sources.Our liquid cold plates are widely adopted for thermal management and heat dissipation in BESS energy storage systems, EV battery packs, high-power IGBT modules, industrial CPUs, GPUs and other high-power heat-generating equipment.

3DVC Cooler

The 3DVC cooler is developed based on conventional copper vapor chambers and copper heat pipes. It adopts an intercommunicated layout to form an integrated 3D vacuum cavity, with cooling fins welded between individual heat pipe units.