Electric spark induced controlled combustion and discharge machining corrosion removing method

A technology of electric discharge machining and electric spark, which is applied in the field of electric spark induced controllable combustion and electric discharge machining erosion, can solve the problems of low efficiency of electric discharge machining, achieve the effect of improving material erosion rate, increasing energy, and reducing electrode loss
CN102009237AInactive Publication Date: 2011-04-13NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2011-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an electric spark induced controlled combustion and discharge machining corrosion removing method, and is characterized in that in the process of conventional electrical discharge machining (EDM), the gas which can generate combustion heat release effect with the metal materials to be machined is pumped into the machining area intermittently to ensure machining alternating between electric spark induced controlled combustion and conventional EDM; under the action of conventional EDM, the metal materials on the surface layer exceed the ignition point and form active state and generate combustion reaction with the pumped gas to generate the combustion products and simultaneously release plenty of heat; the heat directly acts on the metal base materials so that the metal base materials with volume duplicating that of the combusting materials are heated to molten state; and the combustion products and the molten metal materials are thrown off the matrix under the combined action of the heating and explosive power generated by electric spark discharge and flow scouring. The method has the advantages of high efficiency, low loss, low cost, safety and no pollution; and the problems of sizes, rigidity and the like of the machine tools of large structures can be solved simultaneously.
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Description

technical field

[0001] The invention relates to an electric spark machining method, in particular to an electric spark induced controllable combustion and electric discharge machining erosion method capable of improving the efficiency of electric spark machining, quickly eroding base metal materials and ensuring the quality and precision of the machined surface. Background technique

[0002] With the advancement of science and technology and the development of industry, new materials emerge in an endless stream. These materials not only have high hardness, high strength, high wear resistance, but also have high melting point, strong corrosion resistance and other characteristics, making the processing difficulty of traditional cutting processing increasing day by day. Such as superalloys, because of their large work hardening tendency, high cutting force and high cutting temperature, the tool is easy to wear, and the surface quality and precision are not easy to guarantee. ...

Claims

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