Use method for underwater friction stitch welding draining device

Abstract

The invention discloses a use method for an underwater friction stitch welding draining device. Firstly, a workpiece and a stopper are installed; and then a flexible shell of the draining device is connected to a spindle head through a clamp, the flexible shell is connected with a flange through a clamp, and a magnetic suction cup is fixed to the flange so as to be attached to the surface of the workpiece. A magnetic suction cup switch is turned on, magnetic attraction force can be transmitted to the flange through a base plate, and sponge is pressed tightly and makes tight contact with the surface of the workpiece. An air circuit is started at the same time, draining is conducted before welding is started, and the water level is located below the workpiece. A friction stitch welding device is started, a welding machine spindle is moved downwards, the flexible shell contracts in the height direction, a sample makes contact with base metal workpiece, the welding process is started, and the whole process can be observed through the transparent flexible shell. According to the use method, the purpose that that due to the fact that the welding quality during underwater friction stitch welding is relatively poor, and an air environment is built underwater for welding is achieved; and the purposes that the underwater welding process is optimized, and the technology parameter range is enlarged are achieved.

Description

[0001] The application of the present invention is a divisional application of the parent application "a drainage device for underwater friction stitch welding". The application number of the parent application is 2014101714047, and the application date is April 25, 2014. technical field [0002] The invention belongs to the technical field of solid-phase welding, and more specifically relates to a novel friction stitch welding local dry drainage device. Background technique [0003] Friction stitch welding is a new type of solid phase joining method. Friction stitch welding was invented in 1992 by W M Thomas, E D Nicholas et al. of TWI. In the past ten years, Europe has invested a lot of energy in related basic research. Domestically, Beijing Institute of Petrochemical Technology and Tianjin University have done preliminary research on friction stitch welding. [0004] The unit hole welding of friction stitch welding is called Friction Hydro Pillar Processing (FHPP). Its ...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a local drainage device for underwater friction stitch welding. In order to solve the problem of poor welding quality of friction stitch welding underwater and welding in an underwater air environment, the designed Experimental equipment, experimental process and experimental data processing method

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