Micro-channel aluminum heat pipe pre-extruded narrow seam spherical friction stir welding perfusion packaging process

Abstract

The invention belongs to the field of device packaging and heat dissipation, and relates to a microchannel aluminum heat pipe pre-extruded narrow seam spherical friction stir welding filling packaging process, which mainly includes: 1) extracting the internal environment of the micro heat pipe that has been sealed on one side to a high temperature Vacuum state; 2) Pour a certain amount of working fluid into the micro heat pipe; 3) Extrude and seal the micro heat pipe by using the extrusion sealing device; 4) Use the spherical friction stir welding process to weld and seal the micro heat pipe, and the welding direction is along the extrusion sealing line 1 / 2 position; 5) Use the cutting device to cut along the weld seam direction at the 1 / 2 position of the weld seam, and the perfusion and packaging process of the micro heat pipe unit is completed; 6) Remove the vacuum device and the perfusion device. The invention only needs 5 processes to complete the production of the microchannel aluminum heat pipe unit, greatly shortens the intermediate sealing and blanking section, simplifies the processing and manufacturing process, has high material utilization rate, good packaging effect, high reliability, low scrap rate, and low production cost. The efficiency is high, and the service life of the spherical stirring head is long, and the production process is green and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of device packaging and heat dissipation, and relates to a microchannel aluminum heat pipe pre-extrusion narrow welding seam spherical friction stir welding pouring packaging technology. Background technique [0002] Micro-channel aluminum flat tube is a thin-walled porous flat tubular part formed by refined aluminum rods through split welding and extrusion process. It is a key component of a new generation of parallel-flow micro-channel air-conditioning heat exchangers (micro heat pipes). The heat transfer performance of the micro heat pipe is affected by factors such as the perfusion amount of the working fluid, the perfusion vacuum, the working inclination angle, and the internal channel structure. Therefore, the heat transfer performance of the micro heat pipe depends to a large extent on the perfusion package of the micro heat pipe. craft. [0003] At present, the manufacturing technology of micro-channel alumin...

AI Technical Summary

Problems solved by technology

Moreover, one end of the aluminum flat tube needs to be pre-sealed before each production, and the excessively long blanking section also reduces the material utilization rate

The existing micro heat pipe perfusion packaging technology has low material utilization rate, complicated production process, low production efficiency and high scrap rate

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