Heat pipes are highly efficient components used for heat transfer, often found in heat sinks. They transfer heat through internal vapor and dissipate it to improve heat transfer efficiency.

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The production process typically includes the following steps:

Choosing suitable materials: Heat pipes use high thermal conductivity fluids like water or alcohol and are made from materials such as copper or aluminum.
Making the heat pipe: The heat pipe is formed by stamping, stretching, and cutting steel pipes, then heat-treated in a clean environment to remove impurities.
Filling working fluid: The working fluid is added to the heat pipe under vacuum using a filling device, with precise control over the amount and pressure.
Sealing: Heat Pipes are sealed, usually completed through welding or mechanical processing. 
Testing: The heat performance of heat pipes is tested for thermal conductivity, thermal resistance, pressure, and other key indicators.