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Double-shaft-shoulder stir friction head water-cooling cooling device and stir friction welding device and method

A friction stir, water-cooled heat dissipation technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., to achieve the effect of improving welding quality, simple heat dissipation structure, and easy assembly

Active Publication Date: 2016-06-22
CHANGCHUN JIANBANG AUTOMOBILE PROD
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Problems solved by technology

[0003] Although high-quality welds can be obtained by using the double shoulder friction stir welding method, the upper and lower shoulders rub against the surface of the workpiece to generate a lot of heat, which is helpful for the rapid softening of the base metal, but it is found in engineering practice that there are still flashes, holes, tunnels, etc. And other issues

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  • Double-shaft-shoulder stir friction head water-cooling cooling device and stir friction welding device and method

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[0023] In order to solve the above-mentioned problems existing in the prior art, the applicant conducted in-depth research, and the applicant found that: in actual engineering operation, the increase of the rotating speed and forward speed will cause excessive heat production, resulting in uneven heat production at the upper and lower shoulders , The grain size on the upper and lower surfaces of the weld is different, and the fluidity of the structure is poor. This is the cause of defects such as flashing, holes, tunnels, etc. The temperature measurement of the friction stir head with two shoulders during welding shows that the temperature of the lower shoulder is significantly higher than that of the upper shoulder. The study found that: the upper shoulder is connected to the head part of the welding machine, and the heat is lost quickly; the lower shoulder is small in size and has a small heat dissipation area, which is easy to cause overheating on the lower surface of the w...

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Abstract

The invention discloses a double-shaft-shoulder stir friction head water-cooling cooling device and a stir friction welding device and method. The double-shaft-shoulder stir friction head water-cooling cooling device comprises a cooling block and a cooling fin. One end of the cooling block is fixedly connected with a stirring needle, and the other end of the cooling block can stretch in cooling liquid. A draining groove is formed in the cooling block. The cooling fin is fixed to the upper end of the cooling block. When the cooling block rotates, the cooling liquid ascends along the draining groove and flows through the cooling fin, and therefore the temperature of a double-shaft-shoulder stir friction head is reduced. The cooling effect is good, the welding quality can be improved, the overall structure of the stir head does not need to be damaged, a cooling structure is simple, assembling is convenient, and repeated use can be achieved. In the welding process, the cooling liquid can be recycled, components of the cooling liquid can be changed according to welding requirements, and therefore the welding quality can be further improved.

Description

technical field [0001] The invention belongs to the field of metal processing, in particular to a water-cooled heat dissipation device for a friction stir head with double shoulders, a friction stir welding device with a water cooled heat dissipation device for a friction stir head with double shoulders, and a method for using the friction stir welding device. Background technique [0002] Since the British Welding Institute (TWI) invented the friction stir welding method in 1991, this technology can eliminate welding defects such as pores, inclusions, cracks, etc. And it does not produce arc light, smoke, noise pollution, etc., and at the same time can significantly reduce costs, save materials, optimize structures, and reduce the structural weight of aircraft, etc., which have attracted the attention of scientific research institutions in various countries. Because this technology has many remarkable features that other methods do not have, it will soon be used in the aero...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/1235B23K20/26
Inventor 陈书锦倪瑞洋胥国祥周洋
Owner CHANGCHUN JIANBANG AUTOMOBILE PROD
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