Material-saving efficient pouring and encapsulating process for needleless friction stir welding for porous microchannel aluminum heat tube

Abstract

The invention belongs to the field of apparatus encapsulation and heat dissipation and relates to a material-saving efficient pouring and encapsulating process for needleless friction stir welding fora porous microchannel aluminum heat tube. The process comprises the following steps of internally vacuumizing the microchannel aluminum heat tube that is sealed at a single edge by using a vacuumizing device; pouring a working medium into the microchannel aluminum heat tube through a pouring device; welding and sealing the microchannel aluminum heat tube by means of a needleless friction stir welding process; and performing cutting along a weld joint direction at a 1 / 2 position of a weld joint by a cutting device and finishing the pouring and encapsulating process of the microchannel aluminumheat tube. Pouring and encapsulating manufacturing of the microchannel aluminum heat tube can be achieved by four steps of primary clamping, vacuumizing, pouring and primary needleless friction stirwelding, so that the processing and manufacturing flow is shortened greatly, and the process is high in reliability, low in rejection rate, high in production efficiency and high in utilization ratioof materials. Encapsulating equipment is low in demand on performance, a needleless stirring head is long in service life, and a production processes is green and environmental-friendly.

Description

Technical field[0001]The invention belongs to the field of device packaging and heat dissipation, and relates to a high-efficiency needleless friction stir welding pouring packaging process for porous microchannel aluminum heat pipe sections.Background technique[0002]The micro-channel aluminum flat tube is a thin-walled porous flat tubular part formed by using refined aluminum rods through a split welding extrusion process. It is a key component of a new generation of parallel flow micro-channel air-conditioning heat exchangers (micro-channel aluminum heat pipes). The heat transfer performance of the micro-channel aluminum heat pipe is affected by factors such as the amount of working fluid, the degree of vacuum, the working inclination angle and the internal channel structure. Therefore, the heat transfer performance of the micro-channel aluminum heat pipe largely depends on the micro-channel aluminum heat pipe. Pouring and packaging process of channel aluminum heat pipe.[0003]At p...

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

Therefore, the existing microchannel aluminum heat pipe perfusion packaging process is complicated, the production efficiency is low, the material utilization rate is low, and the scrap rate is high.

Images