Manufacturing method for heat pipe

Abstract

The invention relates to a manufacturing method for a heat pipe, which comprises the following steps: a) arranging a pipe body and a core bar; b) inserting the core bar into the pipe body and causing a preset position in the pipe body to be under a closed state, and forming at least one groove between the core bar and an inner wall of the pipe body; c) placing copper powder into the at least one groove through the top end of the pipe body; d) placing the pipe body and the core bar into a fixture and blocking the top end of the pipe body by a powder blocking part, so as to prevent the copper powder from falling from the top end of the pipe body; e) placing the fixture, the pipe body and the core bar into a heating device, causing an inclined angle between the pipe body and the horizontal plane to be less than or equal to 45 degrees, heating and sintering; f) pulling the core bar out of the pipe body; g) sealing one end of the pipe body and then vacuumizing, and injecting working liquid; and h) sealing the other end of the pipe body.

Description

technical field [0001] The present invention relates to the manufacturing technology of the heat pipe, in particular to a heat pipe manufacturing method in which the pipe body is sintered by placing the pipe body horizontally or obliquely during the manufacturing process. Background technique [0002] In existing heat pipes, the internal capillary material is mostly formed by sintering copper powder. [0003] In the current heat pipe method, for capillary materials such as copper powder, a mandrel is usually inserted into the heat pipe body during manufacture, and the bottom end of the pipe body is closed, and then the copper powder is poured into the heat pipe through the opening at the top. , so that the copper powder is filled between the mandrel and the tube body; then the tube body together with the mandrel and copper powder are put into the heating equipment for heating to sinter the copper powder, and finally the mandrel is drawn out and put into an appropriate liquid...

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned existing heat pipe method, when heating, since the top of the tube body is not yet closed, in order to prevent the filled copper powder from leaking out, the tube body must be placed vertically with the opening at the top pointing up. Heating and sintering

To keep the tube body vertically placed, it needs to be clamped by a jig, and the space occupied by the vertically placed tube body is very high. The space must be large enough, otherwise it cannot be placed

The larger the heating space, the more heat energy will be required for heating. Therefore, this traditional heating method consumes more energy, which does not meet the current needs of environmental protection and energy saving.

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