Device and method for eliminating, regulating and controlling residual stress of alloy ring piece

A residual stress and alloy ring technology, applied in the field of electromagnetic manufacturing, can solve the problems of difficulty in meeting the processing requirements of large-sized workpieces, affecting the performance and service life of the device, and difficult to improve the electromagnetic force, so as to achieve flexible and controllable adjustment of the electromagnetic force, reducing Design difficulty, effect of eliminating residual stress

Active Publication Date: 2022-04-12
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional electromagnetic manufacturing technology mainly uses a single pulsed magnet to generate pulsed electromagnetic force on the workpiece. Only one side of the workpiece can generate a large electromagnetic force. At the same time, the magnet itself will also bear a large electromagnetic force load, which is extremely It affects the performance and service life of

Method used

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  • Device and method for eliminating, regulating and controlling residual stress of alloy ring piece
  • Device and method for eliminating, regulating and controlling residual stress of alloy ring piece
  • Device and method for eliminating, regulating and controlling residual stress of alloy ring piece

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Experimental program
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Effect test

Embodiment 1

[0054] Figure 5 Schematic diagram of the structure of the device for eliminating and regulating the residual stress of alloy rings provided by an embodiment of the present invention, such as Figure 5 As shown, the device includes a driving coil 110, which is in the shape of a hollow column, and is located inside the alloy ring 50; a background field coil 210 is in the shape of a hollow column, and is located outside the alloy ring 50; Between the background field coils 210, it is connected with the background field coils 210; and the supporting power supply module and device frame, including the first power supply unit 310, the second power supply unit 320, the device end plate 420, the coil end plate 410, the coil frame 120 and Coil reinforcement layer 230 .

[0055] (1) press Figure 5 In the shown structure, the drive module (drive coil 110 and coil frame 120) is placed inside the alloy ring 50, and the background field module (background field coil 210) is placed outsi...

Embodiment 2

[0062] The control of residual stress is also of great significance to improve the performance of rings and expand its application value. Appropriate compressive residual stress can improve fatigue strength and inhibit cracking. The double-coil structure can simultaneously apply electromagnetic repulsion to the inner and outer sides of the alloy ring 50, so that the alloy ring 50 is in a state of compressive stress, and the stress distribution inside the ring is controlled, including the following steps:

[0063]S1, the background field coil 210 is connected to the second power supply unit 320 to generate an axial background magnetic field; the driving coil 110 is connected to the first power supply unit 310 to generate an axial pulse driving magnetic field, and then induces an eddy current in the alloy ring 50 , the interaction between the magnetic field and the eddy current drives the alloy ring 50 to bulge outward.

[0064] S2, adjust the discharge energy (capacitance, volt...

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Abstract

The invention discloses a device and a method for eliminating, regulating and controlling residual stress of an alloy ring piece. The device comprises a driving module which comprises a driving coil electrified with first pulse current and is used for generating an axial pulse driving magnetic field in an alloy ring piece and inducing eddy current, so that the ring piece generates electromagnetic force deformed in the radial direction under the interaction of the pulse driving magnetic field and the eddy current; the background field module comprises a background field coil electrified with second pulse current and is used for generating a background magnetic field in the same direction as the pulse driving magnetic field in the ring piece, and the pulse width of the background magnetic field is more than 10 times that of the pulse driving magnetic field; and the power supply module is used for providing a first pulse current and a second pulse current, and is used for interchanging the functions of the driving module and the background field module, so that the ring piece generates multiple times of oscillation deformation in the radial direction. According to the invention, the deformation of the ring piece is more uniform, the residual stress is better eliminated, regulated and controlled, the electromagnetic force can be effectively improved, and the design difficulty of the coil is reduced.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic manufacturing, and more specifically relates to a device and method for eliminating and regulating the residual stress of an alloy ring. Background technique [0002] Alloy rings are key components used to connect many large-scale equipment subsystems in the fields of aerospace, energy, metallurgy, etc. Its structural accuracy, processing performance, and mechanical properties determine the assembly accuracy, overall strength, and service life of the equipment. However, due to the existence of factors such as temperature changes and uneven mechanical loads during the heat treatment and machining of alloy rings, residual stress will inevitably occur, which will affect the mechanical properties, fatigue strength, corrosion resistance, and dimensional stability of the rings. However, appropriate compressive stress can improve fatigue strength and inhibit cracking. Therefore, the elimination a...

Claims

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Application Information

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IPC IPC(8): B21D26/14
CPCY02P10/20
Inventor 李亮刘海祥李潇翔唐英豪张毅曹全梁赖智鹏
Owner HUAZHONG UNIV OF SCI & TECH
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