Welding method for applying copper water heat pipe to aluminum plate

Abstract

The invention relates to a welding method for applying a copper water heat pipe to an aluminum plate, and belongs to the technical field of heat dissipation of satellite effective load large-heat-consumption components. A cylindrical heat pipe is pressed into a flat heat pipe, and the flatness of the outer wall of the flat heat pipe meets the requirement; oxide on the surface of the flat heat pipe is polished with abrasive paper; the upper surface of a machine shell is provided with a groove with a special-shaped trend, and the cross section of the groove is rectangular; the outer edges of the upper and lower surfaces of the machine shell are coated with adhesive tapes for protection; a soldering lug is cut into a shape corresponding to the trend of the groove, the soldering lug is flattened, and the flattened soldering lug is placed at the bottom of the groove; the machine shell is horizontally placed on the upper surface of a lower pressing plate; the heat pipe is placed in the groove along the trend of the groove; an upper pressing plate covers the upper surface of the machine shell; an upper clamping tool is clamped on the outer edges of the upper pressing plate and the lower pressing plate to form an integral tool; and the integral tool is placed in welding equipment to be welded, and welding of the heat pipe and the machine shell is completed. By means of the welding method, the heat dissipation requirement of a high-power device is met.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation of satellite payload components with large heat consumption, and relates to a welding method for applying a copper water heat pipe to an aluminum plate. Background technique [0002] This project originates from the research and development of data processor stand-alone machines of multiple models. This kind of stand-alone machine has a high data transmission rate, complex task processing, and the heat consumption of the single board reaches more than 35W. It is no longer possible to adopt the traditional heat sink heat dissipation method. Meet heat dissipation requirements. In order to solve the heat dissipation problem, heat pipes + heat dissipation bosses + heat conduction pads are used to dissipate heat from the device. Generally, during the thermal vacuum and thermal cycle tests of high-power single-unit payloads in the cabin, the temperature of the single-unit installation surface i...

AI Technical Summary

Problems solved by technology

[0003] There are problems such as large contact thermal resistance and poor contact between the copper water heat pipe and the casing through a thermal pad or direct contact. At present, there is no welding method for copper water heat pipes applied to aluminum plates, which can solve the problem of large contact thermal resistance and poor contact. And other issues

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