Shape correcting device of high temperature alloy split-opened casing and correcting method of shape correcting device

A technology of paired open case and high-temperature alloy, which is applied in the field of large-scale open case processing, can solve the problems that the case is difficult to form a good calibration effect and the plastic deformation of the case, so as to enhance the rigidity, simplify the difficulty and improve the processing quality Effect

Active Publication Date: 2018-11-02
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Patent No. of the patent "a kind of large-scale thick-walled annular receiver shape correction device" that has already been declared: the device described in CN203725543U (applicant: Xi'an Aviation Power Co., Ltd.), the problem is that after its shape correction, there is plastic deformation and Internal stress, it is difficult to form a good calibration effect on the superalloy casing

Method used

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  • Shape correcting device of high temperature alloy split-opened casing and correcting method of shape correcting device
  • Shape correcting device of high temperature alloy split-opened casing and correcting method of shape correcting device
  • Shape correcting device of high temperature alloy split-opened casing and correcting method of shape correcting device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The first shape correcting ring 4 is a ring structure, and the inner side of the end face is provided with a spigot, and the diameter of the spigot is the same as the outer circle of one end of the casing mounting edge. There is a gap of 0.5mm; the end face of the first shape correction ring 4 is provided with a wedge-shaped square groove; the material is austenitic stainless steel 1Cr18Ni9Ti.

[0077] The second external shape correction ring 5 is a circular ring structure, and there is a spigot on one end surface, and the diameter of the spigot is the same as the outer circle of the other end of the casing installation edge. There is a gap of 0.6 mm; the end face of the second shape correction ring 5 is provided with a wedge-shaped hole, and its material is austenitic stainless steel 1Cr18Ni9Ti.

[0078] The height of mandrel 1 is the same as that of the casing to be calibrated. Eight groups of evenly distributed threaded holes are opened on the outer circumference ...

Embodiment 2

[0095] Step 1, detect the corresponding size of the left and right halves of the open case is the upper end The theoretical value is 657mm, the measured value is 656.2mm, 656.4mm, the lower end The theoretical value is 673.5mm, and the measured values ​​are 673.38mm and 673.2mm.

[0096] Step 2, detecting the diameter of the designated position of the casing in the direction of 90° to the joint surface, and calculating the approximate ellipticity of the part. The corresponding dimensions of the detection paired open box are: upper end The theoretical value is 657mm, the measured value is 657mm, the lower end The theoretical value is 673.5mm, the measured value is 673.96mm, and the ellipticity of the part is 0.8mm~1mm.

[0097] Step 3: Calibrate the two halves of the casing with the shape correction ring to ensure that the end face of the correction ring fits the upper and lower end faces of the casing.

[0098] Step 4: Place the paired open case with the shape correcti...

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Abstract

The invention discloses a shape correcting device of a high temperature alloy split-opened casing. The shape correcting device comprises a first outer shape correcting ring and a second outer shape correcting ring; an annular stopping opening is formed in the inner side of each outer shape correcting ring, and the diameter of each annular stopping opening is the same as the theoretical outer diameter of the end surface of the casing subject to shape correcting; a plurality of wedge holes are formed in the end surface of each outer shape correcting ring in the circumferential direction evenly and penetrate through the annular stopping openings in the outer shape correcting rings, and the shape correcting device further includes wedge blocks matched with the wedge holes; and a supporting rodinner shape supporting is connected with a supporting block and a mandrel, the outer shape surface of the supporting block is consistent with the inner shape surface of the casing subject to shape correcting, and the supporting rod is arranged in the radial direction of the casing subject to shape correcting. The invention further discloses a shape correcting method of the split-opened casing. Through the combination of cold shape correcting and heat shape correcting of the split-opened casing, the problem that the design requirements are not met due to the fact that the ellipticity of the split-opened casing changes too much is solved, the fact that the ellipticity of the split-opened can meet the requirements of the subsequent processing is ensured, the difficulty of the subsequent processing process is simplified, the processing quality of the parts is improved, and the rejection rate is reduced.

Description

technical field [0001] The invention belongs to the field of large-scale pair-opening case processing, and in particular relates to a type calibration device and a correction method for a high-temperature alloy pair-opening case. Background technique [0002] As a typical part of aviation and aerospace engines and gas turbines, the casing is widely used in various types of turbojet, turbofan aeroengines, turboramjet engines and gas turbines. The open case is two semi-annular half casings with longitudinal installation edges, and the joint surface is between the longitudinal installation edges. With the continuous development of aero-engine technology, the use of high-temperature alloy materials in paired open cases is becoming more and more common. The good fatigue performance and fracture toughness of superalloy materials, while adapting to the current aero-engine technology, also makes it difficult to control the deformation of the casing. Ring-shaped high-temperature al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D1/10
CPCB21D1/10
Inventor 杨武任景刚孔令珊关长军张磊王军郭相峰党宏武
Owner AECC AVIATION POWER CO LTD
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