A double-layer thin-walled sheet metal receiver shape correction and heat treatment fixture and method
A thin-walled, shape-correcting technology, applied in heat treatment furnaces, heat treatment equipment, forming tools, etc., can solve the problem of large deformation of the installation edge of the double-layer thin-walled sheet metal casing, reduce the cost of replacement and repair, prolong the Service life and the effect of reducing safety hazards
Active Publication Date: 2021-01-08
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
[0003] In order to solve the above-mentioned technical problems, the present invention provides a double-layer thin-walled sheet metal casing shape correction and heat treatment setting fixture and method. Before and during the heat treatment process, the installation side is corrected and shaped by a special fixture to eliminate backlash. Elastic stress, to solve the problem of excessive deformation of the mounting edge of the double-layer thin-walled sheet metal casing
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[0048] In this case, the overhaul of the confluence ring is taken as an example, such as figure 1 As shown, the aero-engine confluence ring is a double-layer thin-walled sheet metal casing component formed by welding the tail ring 1, the inner wall 2, the outer wall 3 and the mounting edge 4. The main material of the installation side of the confluence ring is GH3536 alloy. In order to ensure that the linear expansion coefficient of the fixture and the part material are consistent, the material of the setting ring is selected as GH3536 alloy.
[0049] 1) Check that there are no other faults in the overhaul confluence ring, and measure the roundness of the installation edge. In this case, the roundness of the installation edge is φ8.5mm.
[0050] 2) Clean the confluence ring with clean gasoline to remove dirt.
[0051] 3) Install edge correction, according to figure 1 , place the installation side 4 of the confluence ring on the fixing ring 5 of the fixture, so that the inner...
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The invention belongs to the technical field of repairing parts of aero-engines, and relates to a double-layer thin-walled sheet metal casing shape correction and heat treatment setting fixture and method. The present invention designs a setting fixture and combines the parts repair process to pass the setting fixture before heat treatment. Correct the shape of the mounting edge of the casing, and place it in a heat treatment furnace to heat-treat and shape the mounting edge of the casing to eliminate the springback stress of the shape. After setting, the roundness and technical conditions of the mounting edge meet the engine assembly requirements. That is to say, it solves the problem of low qualified rate of artificial calibration of the installation edge of the double-layer thin-walled sheet metal casing, easy damage to the installation edge during the calibration process, and springback after calibration; finally solves the assembly stress problem of the reusable assembly engine of the overhauled casing ; Reduce the potential safety hazards caused by the assembly stress of the reassembled engine after casing repair, prolong the service life of parts, and reduce the cost of replacement repairs.
Description
technical field [0001] The invention belongs to the technical field of aero-engine parts repair, and relates to a shape-calibrating and heat-treating fixture and method for a double-layer thin-walled sheet metal casing. Background technique [0002] Double-layer thin-walled sheet metal casing components are important components of aero-engines. Due to the thin-walled structure of such casing components, failures such as elliptical deformation and warping deformation of the mounting edge are common after work. During the repeated engine assembly process of this type of casing components, the deformation of the mounting edges is often too large, which makes it extremely difficult to assemble the mounting edges of the matching components. Deformation springback causes very large assembly stress, which causes a large safety hazard in the engine. In the actual assembly process, it often occurs that due to the large assembly deformation stress, the bolts are sheared and the thre...
Claims
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IPC IPC(8): B21D43/00B21D3/16B21D37/16C21D9/00
CPCB21D3/16B21D37/16B21D43/003C21D9/0068
Inventor 黄青松杨钊公维勇黄金艳任武
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION