A composite machining method of electric spark discharge ablation and electrolysis of atomized medium with adjustable conductivity

Abstract

The invention provides a conductivity adjustable atomizing medium electric spark discharge ablation and electrolytic combined machining method which is characterized in that during the electric spark induced ablation machining, an insulated working medium used by electric spark discharge is replaced by electrolyte and forms an atomizing medium with an inflammable (combustion-supporting) gas such as oxygen to be sprayed into the machining area, the aim of controlling the conductivity of the atomizing medium is achieved by adjusting the proportion of the gas and the electrolyte during the machining, and a machining manner of mainly taking discharge induced ablation machining, or discharge induced ablation and electrolytic machining, or electrolytic machining can be realized at different stages of the whole machining process based on the machining needs or stage requirements, and the machining improves the machining efficiency through ablation, or takes the machining efficiency and surface quality into account, or removes a surface degenerating layer. The aims of initial high efficiency machining based on machining needs during the whole machining process and degenerating layer reduction or removal at the end are achieved. The machining manner can be applied to milling of conductive materials and machining of deep blind holes.

Description

technical field [0001] The invention relates to the field of special processing, in particular to an electric discharge machining method for conductive materials with the advantages of high-efficiency erosion, low cost, low loss, high surface quality, and the like. Specifically, it is an atomized medium electric spark discharge ablation and electrolytic composite processing method with adjustable conductivity. Background technique [0002] With the advancement of science and technology and the development of industry, new materials and new structures are constantly appearing, especially in the field of aerospace. It is getting higher and higher, and the processing of structural parts has shown the characteristics of overall structure, complex structure, large amount of cutting processing, many thin-walled parts, and high processing precision. For example, the overall large-scale components such as the overall impeller, casing, connection frame, and cabin used in aerospace a...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of low efficiency of electrical discharge machining of conductive materials that are difficult to cut, low and single energy input, and surface defects such as metamorphic layers and recast layers on the processed surface, and to invent an atomization medium electric discharge with adjustable conductivity. Discharge ablation and electrolytic composite processing method, firstly through the high-efficiency erosion of the new high-energy input discharge ablation processing between the electrodes, and then by adjusting the ratio of gas and electrolyte, the electrolytic processing-based surface modification, Improve the quality and integrity of machined surfaces

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