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

A technology of welding deformation and control method, applied in the field of machining, can solve the problems of low machining accuracy of parts, and achieve the effect of reducing cost

A technology of welding deformation and control method, applied in the field of machining, can solve the problems of low machining accuracy of parts, and achieve the effect of reducing cost

CN104493369AActive Publication Date: 2015-04-08SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Cantilever and radials type titanium alloy casing deformation control method and device
  • Cantilever and radials type titanium alloy casing deformation control method and device
  • Cantilever and radials type titanium alloy casing deformation control method and device

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Embodiment 1

[0023] This embodiment provides a method for controlling the welding deformation of a cantilever and radial plate type titanium alloy casing, which is characterized in that: the method for controlling the welding deformation of a cantilever and radial plate type titanium alloy casing is adopted from the inside to the outside, from the middle to both sides 2. The overall welding sequence from the inner layer to the outer layer. In order to eliminate the welding stress, stress relief heat treatment is arranged after welding. Due to the number of layers and welding parts of the parts, the stress during the welding process is relatively large. After the inner layer is welded, the intermediate The purpose of heat treatment is to correct the precise thermal shape correction, remove the welding stress in the early stage, and avoid the stress release at the final heat treatment. The heat treatment fixture is as follows: image 3 , 4 As shown, the accumulation of welding deformation in...

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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 ...

Claims

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Application Information

Patent Timeline
08 Apr 2015
Publication
CN104493369A
IPC
B23K31/00; B23K37/04; B25B11/00; B23K9/16
CPC
B23K31/003
Inventors
刘晓娟; 邵天巍