Wire electric discharge machine dissolving intert gas in machining fluid and wire electric discharge machining method using the same

Abstract

A wire electric discharge machine machines a workpiece immersed in an electrically conductive water-based machining fluid stored in a machining vessel. An inert gas dissolver is provided in the wire electric discharge machine to pressurize the machining fluid, dissolve an inert gas into the pressurized machining fluid, and depressurize the machining fluid, such that wire discharge machining is carried out in the machining fluid containing the inert gas dissolved therein.

Description

technical field [0001] The present invention relates to a wire electric discharge machine capable of preventing corrosion of a workpiece and dissolving an inert gas that requires no running costs in a machining fluid, and a wire electric discharge method using the wire electric discharge machine. Background technique [0002] The machining fluid of the wire electric discharge machine includes a machining fluid mainly composed of water and a machining fluid mainly composed of oil. In the machining fluid with oil as the main component, since there is almost no electrolytic action, there will be no problem of electrolytic corrosion of the workpiece, but compared with the machining fluid with water as the main component, because it cannot invest a large amount of machining energy , so the speed of roughing cannot be accelerated. In addition, the machining fluid mainly composed of oil has many disadvantages, such as the possibility of the oil igniting if the discharge point come...

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Problems solved by technology

In addition, in general, hollow fiber membrane modules are consumables, and the premise is to replace them regularly. However, when a liquid containing a large amount of heavy metal ions flows through the hollow fiber membrane module, such as the machining fluid used in wire electric discharge cutting, the deterioration is very fast. , the hollow fiber membrane module needs to be replaced frequently, the replacement time and labor are much, and the operation cost is very high, so this technology is not practical

[0013] In the prior art described above, the effect is limited to the vicinity of the electrode, the material is limited to iron-based materials, and there are problems such as running costs.

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