Fricition stir welding stir-welding head cooling tank

Abstract

The invention discloses a friction stir welding stir-welding head cooling tank. The friction stir welding stir-welding head cooling tank is used for cooling a stir-welding head, comprises a fixing device, a water storage chamber, a circulating cooling device and a high-temperature-resistant sponge water retaining ring, wherein a cooling tank main body is fixedly arranged on a shell of a friction stir welding machine through the fixing device, a water outlet and a water filling port are formed in the side wall of the water storage chamber, the circulating cooling device is connected between thewater outlet and the water filling port, the high-temperature-resistant sponge water retaining ring is arranged at the center of the bottom of the water storage chamber, and the soaked high-temperature-resistant sponge water retaining ring wraps around the stir-welding head. The friction stir welding stir-welding head cooling tank is simple in structure, convenient to install and operate, capableof rapidly cooling the stir-welding head, and high in cooling rate; the circulating cooling device can be used for recycling a cooling liquid of the water storage chamber, the cooling effect is enhanced, and the waste of water resources is reduced; and meanwhile, the welding method reduces the temperature of the stir-welding head during welding, the service life of the stir-welding head is prolonged, the stir-welding head is cooled during the welding, the heat affected zone of a joint is reduced, and the strength and the welding quality of the joint are improved.

Description

technical field [0001] The invention belongs to the field of metal processing, and in particular relates to a cooling tank for a friction stir welding stirring head. 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 aerospace field, and this method is selected for the welding of the longitudinal seam of the core tank section of the new generation of launch vehicles. Although high-quality welds can be obtained by ...

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Problems solved by technology

[0006] In order to solve the defects of high temperature caused by friction between the high-speed rotation of the stirring head and the plate, the stirring head is easy to wear, the service life is shortened sharply, and the heat-affected zone of the joint is large and the joint strength is low. The invention provides a simple structure and easy installation. Friction stir welding stirring head cooling tank, this device can reduce the temperature of the stirring head during welding, prolong the life of the stirring head, and reduce the heat-affected zone of the joint by cooling the stirring head during welding, and improve the joint strength and welding quality

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