Sealing method of heat pipe and finished product of sealing method

Abstract

The invention relates to a sealing method of a heat pipe and a finished product of the method. According to the method, the annular-wall-shaped tail ends of a pipe body are locally flattened into two pressing faces attached to each other by flattening the pipe wall of the metal round pipe from the tail end through a flattener, fillet cutting is conducted on the two sharp corners of the pressing faces through a cutting device so that each sharp corner can form fillet arcs after being cut, the two pressing faces are fixedly connected and combined with each other to form a flat sealing section in an ultrasonic wave welding manner, and then sealing of the heat pipe is completed. Sealing is completed in a pressing manner, the worry that round pipe tail end eccentricity is caused in the partial pipe pressing process is eliminated, the flow of pipe shrinkage is omitted, and the effect of improving the manufacturing efficiency and yield of the heat pipe is achieved.

Description

technical field [0001] The invention relates to a sealing method of a heat conduction component and its finished product, in particular to a sealing method of a heat pipe and its finished product. Background technique [0002] The heat pipe is a fast heat conduction component, which is widely used in coolers or various heat exchangers. The general heat pipe is a hollow tube made of metal. According to the different working temperature, the inside of the tube can accommodate different nature of the heat transfer fluid, and in order to prevent the leakage of the heat transfer fluid inside the tube, a sealing operation will be performed on both ends of the tube. The existing sealing process is as follows Figure 5 As shown, it is mainly to process a pipe body 80 through partial shrinkage, clamping, welding and shaping in sequence. However, as Image 6 and Figure 7 As shown, in the process of partial pipe shrinkage, the end of the pipe body 80 is radially struck by a striking ...

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Problems solved by technology

[0003] In order to solve the problem that in the sealing process of the existing heat pipe, during the partial shrinkage step, the force at the end of the pipe body varies with different striking angles, which makes the metal pipe part bent and causes the end of the heat pipe to be prone to eccentricity. lack, and the heat pipe yield rate is not high and the sealing process is time-consuming, the main purpose of the present invention is to provide a heat pipe sealing method and its finished product, which is to flatten the end of a round pipe with a flattener, Then the sharp corners on both sides of the local flattened area are cut into guide circles, and then the end of the round tube is clamped to complete the sealing, which can achieve the effect of simplifying the tube shrinking process and improve the yield of heat pipe sealing. Further, the end of the round tube The clamping seal is completed by ultrasonic welding, which can improve the welding quality and speed up the welding speed

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