Manufacturing method of vacuum phase-change radiator

Abstract

The invention discloses a manufacturing method of a vacuum phase-change radiator. The vacuum phase-change radiator comprises a radiator body, an upper end cover and a lower end cover, wherein the radiator body has a hollow pipe; a phase-change working medium is loaded in the hollow pipe; the upper end cover and the lower end cover are welded at the two ends of the hollow pipe respectively; the upper end cover and/or the lower end cover are/is subjected to machine-shaping by using a hot extrusion process. The hot extrusion process comprises the following steps of material cutting, heating, shaping, preheating, reshaping and cooling. According to the manufacturing method of the vacuum phase-change radiator, the upper end cover and the lower end cover are molded by using the hot extrusion process; the cost is reduced; the problem that an end cover subjected to the machine-shaping in a conventional manner has micropores or finedraws is solved; the upper end cover and the lower end cover are welded on the radiator body by using a stirring welding or friction welding process; the connection at a welding spot is firm; the vacuum tightness is enhanced; the service life is longer.

Description

technical field [0001] The present invention relates to the technical field of radiator manufacturing technology, in particular to a manufacturing method of a vacuum phase-change radiator, in particular, to a manufacturing method of an end cover of the vacuum phase-change radiator and a welding method of the end cover and the radiator body. Background technique [0002] Vacuum phase change radiators, such as LED sun flower radiators, such as figure 1 As shown, it includes a sunflower-shaped radiator body 1, an upper end cover 2 and a lower end cover 3, the radiator body 1 has a hollow tube 4, and the hollow tube 4 is equipped with a phase change working medium, the upper end cover 2 and the lower end cover 3. The lower end caps 3 are respectively welded to both ends of the hollow tube 4. After welding, the hollow tube 4 forms an airtight vacuum chamber, wherein the radiator body 1, the upper end cap 2 and the lower end cap 3 are made of aluminum, and the lower end cap The u...

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Problems solved by technology

[0006] Aiming at the deficiencies in the prior art above, the purpose of the present invention is to provide a manufacturing method for a vacuum phase change radiator. First, the upper end cover and the lower end cover are formed by using the red punching process, which reduces the cost and solves the problems of traditional processing and forming. There are micropores or thin seams in the cover; secondly, the upper end cover and the lower end cover are welded to the radiator body by stir welding or friction welding process, the solder joints are firmly connected, the vacuum sealing is strengthened, and the service life is longer

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