Underwater friction stitch welding local dry method small draining device

Abstract

The invention discloses an underwater friction stitch welding local dry method small draining device. A whole draining cover is a cylindrical shell, an opening is formed at the lower end of the whole draining cover, and planes are symmetrically milled in the vertical direction. A through hole is formed in the central position of the upper end face of the draining cover, and a sealed material layer is arranged in the through hole; air inlets are symmetrically formed on the left side and the right side of the through hole; observation windows are formed on the planes milled in the vertical direction of the draining cover; and a draining sponge layer is arranged on the lower end face of the draining cover, and connection between waterproof glue and the draining cover is utilized, so that connection airtightness is ensured. The sealing material layer is a solid annular sealing material layer and is in tight contact with a stopper rod; in the high-speed rotating process of the stopper rod, the airtightness can be ensured, and wear resistance is achieved; the problems that the underwater friction stitch welding quality is poor, and air environment needs to be built underwater for welding are solved. The aims of obtaining the better welding joint quality, optimizing the underwater welding working procedure, and expanding the technical parameter range are achieved.

Description

technical field [0001] 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 [0002] Friction stitch welding is a new type of solid phase joining method. Friction stitch welding was invented in 1992 by WM Thomas, EDNicholas 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. The unit hole welding of friction stitch welding is called Friction Hydro Pillar Processing (FHPP). Its principle is to use the consumable characteristic rod (which can be called the stopper rod) to drive the stopper rod through the driving device Rotate, the stopper rod descends while rotating, and the stopper rod contacts and rubs against the plug hole (the hole to be welded) to form p...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a small-scale underwater friction stitch welding partial dry method drainage device. In order to solve the problem of poor welding quality of friction stitch welding underwater welding and welding in an underwater air environment , so as to design the experimental equipment and experimental process to achieve better welded joint quality, optimize the underwater welding process, and expand the range of process parameters

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