A welding tool for straight pipe components with special-shaped flange pipe joints and its induction brazing process method

Abstract

The invention discloses a welding tool for a straight pipe assembly provided with a special-shaped flange pipe joint. A base is in an L shape, and supporting nails are arranged between screw holes andinstallation columns; a top plate is provided with screw holes and an installation hole; the two ends of a strut are both provided with installation seats, one end of the strut is connected with thebase, and the other end of the strut is connected with the top plate; the position, between the installation columns, of the base is hollow and is used for storing the special-shaped flange pipe jointconnected with a straight pipe; the upper end surfaces of the installation seats are provided with positioning pins; installation holes formed in a flange of the joint are in sleeving connection withthe positioning pins, the bottom surface of the flange of the joint is attached to the upper end surfaces of the installation columns on the base, one ends of pressing plates press the joint flange,the other ends of the pressing plates press the supporting nails, and the pressing plates are fastened to the supporting nails in the mode that pressing screws penetrate through the pressing plates; and the installation hole of the top plate is internally provided with a coaxial pin sleeve, and the straight pipe is inserted into the coaxial pin sleeve and fixed through a screw. According to the technical scheme, an induction brazing technology method is designed, argon shield is adopted to replace brazing flux, the process of removing the brazing flux through a chemical method is not needed, the procedure is simplified, and the machining efficiency is improved by dozens of times.

Description

technical field [0001] The invention relates to the technical field of an induction brazing process method for ensuring the length dimension and coaxial requirements after welding of straight pipe components, in particular to a welding tool for straight pipe components with special-shaped flange pipe joints and an induction brazing process method thereof. Background technique [0002] The straight pipe assembly with special-shaped flange pipe joints on the aero-engine is composed of special-shaped flange joints and straight pipes, and has strict length requirements and coaxial requirements. Due to the complex structure of the pipe joint, the previous brazing process adopts the flexible flame brazing process method, which is first assembled and positioned on the tooling, and then removed from the tooling and then welded. After welding, the length and coaxiality must be removed. It is difficult to meet the requirements, and at the same time, the flange has undergone serious ch...

AI Technical Summary

Problems solved by technology

Due to the complex structure of the pipe joint, the previous brazing process adopts the flexible flame brazing process method, which is first assembled and positioned on the tooling, and then removed from the tooling and then welded. After welding, the length and coaxiality must be removed. It is difficult to meet the requirements, and at the same time, the flange has undergone serious changes, and the method of ensuring quality by quantity is often adopted, resulting in the scrapping of a large number of parts

At the same time, flame brazing requires high skills of welders, large human influence factors, poor welding quality, many procedures, long processing cycle, and high delivery pressure

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