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

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...

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 the device, and also increases the difficulty of coil design, making it difficult to meet the processing needs of large-sized workpieces

[0005] Therefore, how to solve the problems of uneven force, difficulty in increasing electromagnetic force, and difficulty in coil design in the traditional method of eliminating residual stress is a technical problem that needs to be solved urgently.

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