Electric spark induction controllable erosion and electrolysis compound efficient machining method

Abstract

The invention discloses an electric spark induction controllable erosion and electrolysis compound efficient machining method which is characterized by comprising the steps of: with electrolyte as a working medium, immersing one end of a to-be-machined workpiece electrode and a tool electrode in the working medium, intermittently introducing air to a machining area and forming an air film between the to-be-machined workpiece electrode and the tool electrode; generating electric spark discharge between the to-be-machined workpiece electrode and the tool electrode under the action of an electric spark power supply to ensure that the to-be-machined workpiece generates an oxidation exothermic reaction with the introduced air under the action of electric spark discharge ignition and forms a burning effect so that efficient ablation is realized; in an air closed stage, carrying out electrochemical machining and surface dressing on the ablation surface under the action of an electrolysis power supply; and alternating to start an electric spark ignition pulse power supply and an electrolysis eroding power supply and moving the tool electrode until machining is finished. The invention has the advantages of high material eroding efficiency up to be several times, even tens of times of that of the conventional electric spark machining and also be higher than that of the conventional electrolysis machining under the same electrical parameters on the premise of ensuring machining quality and precision, good surface quality, precision and controllability and capability of eliminating surface residual stress.

Description

technical field [0001] The invention relates to a special processing method, especially a high-efficiency composite processing method in which controllable high-efficiency ablation is induced by electric spark discharge and trimmed by electrolytic processing. The degenerated layer is eliminated, and the electrode loss is greatly reduced. Specifically, it is an electric spark induced controllable ablation and electrolytic composite high-efficiency processing method. Background technique [0002] With the advancement of science and technology and the development of industry, an endless stream of metal materials not only have high hardness, high strength, good wear resistance, but also have high melting point, strong corrosion resistance and other characteristics, making the traditional cutting method more and more difficult . For example, in the machining process of high-temperature alloys and high-strength steels, due to their large cutting force, high cutting temperature, ...

AI Technical Summary

Problems solved by technology

[0015] The present invention is aimed at the problems of low electric discharge machining efficiency of difficult-to-machine metal materials, residual tensile stress and metamorphic layers on the machined surface, etc., by inputting new energy between the poles, a special machining method without macroscopic cutting force is invented, which can be used The controlled ablation method rapidly erodes the processed material, and the surface is further compounded by electrolysis to improve the ablation efficiency and eliminate the residual stress and metamorphic layer on the processed surface

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