Welding deformation control method for thin-walled double-layer titanium alloy seal retainer

Abstract

A Welding deformation control method for a thin-walled double-layer titanium alloy seal retainer comprises the steps that welding connectors of installation edges of the inner wall and the outer wall of a front seal retainer body are designed to be in a butt-joint mode provided with a lock bottom; and the middle section of the inner wall of the front seal retainer body, the middle section of the outer wall of the front seal retainer body, the front installation edge and the rear installation edge are lathed. The method specifically comprises the steps that the middle section of the inner wall of the front seal retainer body and the middle section of the outer wall of the front seal retainer body are machined, and then the two end faces of the middle section of the inner wall of the front seal retainer body and the two end faces of the middle section of the outer wall of the front seal retainer body are lathed; then the middle section of the inner wall of the front seal retainer body and the middle section of the outer wall of the front seal retainer body are made to be in butt joint with the front installation edge and the rear installation edge, and the butt joint dimension is guaranteed; finally lathing is conducted, and butt joint gaps of subsequent electron beam welding are met; and heat shaping clamps are added in the heat treatment process of the front seal retainer body after welding. The method further comprises the specific steps that an inner wall assembly and an outer wall assembly of the front seal retainer body are installed in the heat shaping clamps respectively, each heat shaping clamp is composed of a chassis and a mold core, and the straight section dimension accuracy and cylindricity after welding of the inner wall assembly and the outer wall assembly through the chassis and the mold cores of the heat shaping clamps.

Description

technical field [0001] The invention belongs to the technical field of manufacturing aero-engine parts, in particular to a method for controlling welding deformation of a thin-walled double-layer titanium alloy sealing seat. Background technique [0002] Such as figure 1 The front seal seat of a certain type of aero-engine shown is a thin-walled double-layer titanium alloy structure, and is located at the center of the first-stage disc of the aero-engine. The inner surface of the front seal seat cooperates with the seal grate to seal the bearing Sealed tightly. [0003] Due to the structural particularity of the above-mentioned front seal seat, compared with other seal components of the aero-engine, the front seal seat is more easily deformed during the welding process. Once the welding deformation is too large, it will directly lead to the failure of the front seal seat parts. scrapping, which seriously affects the normal development progress of aero-engines. Contents o...

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Problems solved by technology

[0003] Due to the structural particularity of the above-mentioned front seal seat, compared with other seal components of the aero-engine, the front seal seat is more easily deformed during the welding process. Once the welding deformation is too large, it will directly cause the parts of the front seal seat scrapped, thus seriously affecting the normal development progress of aero-engines

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