Electromagnetic-field-aided ultrasonic shot peening device and method

Abstract

The invention provides an electromagnetic-field-aided ultrasonic shot peening device and method. Through application of an electromagnetic field, shots are in a superimposed field of an electromagnetic field and a gravity field, and the intensity of the electromagnetic field is changed through change of the magnitude of a current so that the magnitude and direction of a resultant borne by the shots can be controlled; and in this way, the influence of the gravity field on the shots is eliminated according to different directions of a tool head relative to a workpiece, and the limitation that during conventional shot type ultrasonic shot peening treatment, the tool head can only be located below the workpiece to be treated and preferably over the workpiece to be treated is eliminated. The tool head can be located below the workpiece to be treated and can also located above the workpiece to be treated, and treatment of a workpiece in a complicated shape can be conveniently and flexibly achieved in any direction. Besides, through control over the magnitude of the electromagnetic force, the speed of the shots can be changed, and adjustment and control over the shot peening intensity can be achieved.

Description

technical field

[0001] The invention belongs to the technical field of surface treatment in the subject of material processing, and in particular relates to an electromagnetic-assisted ultrasonic shot peening device and method. Background technique

[0002] Shot peening is a cold working surface modification and forming technology, that is, under the drive of external force, the projectile hits the workpiece at a certain speed, so that the material undergoes elastic-plastic deformation, and pits are formed on the metal surface, resulting in numerous depressions overlapping to form a uniform residual compressive stress layer. In recent years, people have paid great attention to shot peening technology, and the methods of shot peening have been continuously enriched. In addition to traditional pneumatic shot peening and mechanical shot peening, high-pressure water jet shot peening, laser shot peening and ultrasonic shot peening have also been researched and developed. Many ne...

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