The diameter of the heat pipe is usually 4,5,6,6.5, 8,9.5, 10,10.5, and 12mm. So the corresponding copper tube is these diameters. These specifications of copper pipe after cleaning, oil, and then do passivation and antioxidant treatment.The copper tube is sealed at one end by a high speed shrinking machine.And of course there's always the process of laser welding, so there's no risk of leakage at one end of the copper tube.

A 3mm diameter stainless steel rod was inserted into the finished copper tube, taking the 6mm diameter copper tube as an example.Then the copper powder is poured into the copper tube, and after mechanical vibration, the copper powder is tightly combined with the copper tube wall .These copper tubes with copper powder inside were heated to 800 degrees in a vacuum furnace. Under the high temperature, the copper powder and the copper tube walls were tightly bonded together.

Let the vacuum oven slowly cool down, and take out the copper tube. At this time, remove the stainless steel rod in the center, and inject pure water containing alcohol into the copper tube according to the power calculation of the customer's demand.The air inside the copper pipe injected with water is pumped into a vacuum by a vacuum machine, and then the other end of the copper pipe is welded and closed by a laser welding machine, so that a copper pipe containing liquid in the vacuum state is formed, which we call a heat pipe.

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