Cantilever and radials type titanium alloy casing deformation control method and device

Abstract

The invention provides a cantilever and radials type titanium alloy casing deformation control method and device. The welding is performed in sequences from interior to exterior, from the middle to two sides and from the internal layer to the external layer, stress removal heat treatment are performed after welding, and the final stress removal heat treatment is performed before assembly; argon gas protection is adopted in the back welding process, and welding gun protection is adopted in the front welding process. The device comprises a heat treatment clamp and a welding clamp; a base of the heat treatment clamp is connected to a positioning ring integrally in a welded manner, and positioning blocks of the welding clamp are connected through a pin, are in clearance fit and are pressed through press bolts. The method and device has the advantages that the problem of welding deformation of a complex welding structure casing is solve smoothly, the quality requirements of an aircraft engine metal seal ring can be met, and a part of the variety is free of a heavy entire casting structure.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a method and equipment for controlling welding deformation of a cantilever and web-plate titanium alloy casing. Background technique [0002] Titanium alloy welded casing has been widely used in aircraft power plants because of its low cost, high processing efficiency and light weight. Engine turbine rectifying support casing such as figure 1 , 2 As shown, it is the main load-bearing part of the turbine part of the engine. Structurally, the turbine rear casing and the flow channel are designed on a welded assembly. It is a typical all-welded structure casing. The casing has 4 layers in the diameter direction. 6-stage cantilever welding structure, multiple argon arc welds are concentrated in a small space with a diameter of 735mm and a height of 185mm, and the cumulative length of the welds is about 16m. This part is characterized by small space, many welds, many ...

AI Technical Summary

Problems solved by technology

Limited by the characteristics of sheet metal forming and welding processing technology, the machining accuracy of this part is low. In order to effectively control welding deformation, improve processing efficiency, effectively limit the welding deformation of parts, and effectively ensure the structural size of parts while removing stress, it is necessary to Reasonable methods and equipment

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