High-frequency pulse current assisted surface shot blasting reinforcement machining device and method

Abstract

The invention discloses a high-frequency pulse current assisted surface shot blasting reinforcement machining device. The device is characterized by consisting of a surface shot blasting reinforcement device and a pulse power supply device; the surface shot blasting reinforcement device comprises a shot blasting chamber, a shot blasting mechanism mounted on the shot blasting chamber and used for blasting shots into the shot blasting chamber, and a workpiece clamping mechanism arranged in the shot blasting chamber and used for fixing workpieces; and the pulse power supply device is connected to the workpieces during shot blasting to apply pulse current on the workpieces. The invention further discloses a high-frequency pulse current assisted surface shot blasting reinforcement machining method; the method uses an electroplastic effect of high-frequency pulse current to improve the surface plasticity of such aviation parts as titanium alloys and aluminum alloys, to reduce the hardness, to improve the surface shot blasting reinforcement effect of the parts and to improve the wear resistance and the fatigue intensity of the aviation parts.

Description

technical field [0001] The invention relates to the technical field of metal surface strengthening, in particular to the technical field of surface strengthening of complex parts, and specifically includes a high-frequency pulse current-assisted surface shot peening processing device and method. Background technique [0002] Aeronautical materials such as titanium alloys and aluminum alloys are subject to alternating loads and external environments during service, and are very prone to fatigue fractures; dynamic wear. Fatigue cracks and fretting wear have become the two main forms of failure of aerospace parts such as titanium alloys and aluminum alloys. [0003] In order to improve the fatigue strength and wear resistance of aerospace parts such as titanium alloys and aluminum alloys, the surface of the workpiece must be strengthened. Shot peening treatment selects fine projectiles and hits the surface of the workpiece at high speed, causing elastic-plastic deformation of...

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Problems solved by technology

[0004] In order to solve the problem of surface strengthening treatment of existing titanium alloys, aluminum alloys and other aviation parts, one of the purposes of the present invention is to provide a surface shot peening processing device assisted by high-frequency pulse current with simple structure. Auxiliary effect, improve the effect of shot peening on the surface of the workpiece, and improve the wear resistance and fatigue strength of aviation parts such as titanium alloy and aluminum alloy

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