Manufacturing and assembling method of novel 35MPa axial extrusion pipeline connecting piece for aviation

Abstract

The invention discloses a manufacturing and assembling method of a novel 35MPa axial extrusion pipeline connecting piece for aviation. An extrusion ring and a pipe joint are manufactured through machining; the extrusion ring and the pipe joint are made of titanium alloy, the titanium alloy material is treated through a heat treatment process, and then the extrusion ring and the pipe joint with standard shapes are manufactured through machining, so that the manufactured extrusion ring and the manufactured pipe joint reach the required tensile strength; the inner surface of the extrusion ring, the outer surface of the pipe joint and the inner surfaces of two ports of the pipe joint are coated with a dry film lubricant, and an identification part is arranged on the outer surface of the extrusion ring; when the axial extrusion pipeline connecting piece is assembled on an airplane, the extrusion ring of the axial extrusion pipeline connecting piece and the pipe joint are installed at the preset position of the guide pipe, the extrusion ring is extruded to the pipe joint through the axial extrusion force of the special crimping tool, and the pipe joint can be assembled through the radial size difference between the extrusion ring and the pipe joint. Radial extrusion deformation connection of the pipe joint and the guide pipe is completed, and sealing of the pipe joint and the guide pipe is achieved.

Description

technical field [0001] The invention belongs to the technical field of pipeline connectors for aerospace, and in particular relates to a manufacturing and assembling method for a novel 35MPa axial extrusion pipeline connector for aviation. Background technique [0002] In order to improve the flight performance of international advanced aircraft, the hydraulic system has been raised to 35MPa. At the same time, the conduit connection of the hydraulic system must also meet the corresponding system pressure and performance index requirements. The 35MPa axial extrusion pipeline connector is the most advanced conduit connection in the world. It has the characteristics of high bearing pressure, simple structure, light weight, anti-fatigue, anti-vibration, good sealing performance, safety and reliability, and easy installation and operation. It has been widely used in F-16, F-35B, C-17, V- 22. Hydraulic systems of military and civilian aircraft such as A320 and A380. Increase the ...

AI Technical Summary

Problems solved by technology

The new 35MPa axially extruded pipeline connector manufactured by the manufacturing and assembling method of the present invention solves the problems existing in the current domestic aviation hydraulic system using the 74-degree flared pipeline connector; ensures 35MPa axial extrusion The pipeline connectors meet the requirements of aviation technology and meet performance indicators such as sealing, connection strength, weight reduction, and bending fatigue life.

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