Electrical-discharge machining apparatus and method and apparatus for dielectric-fluid quality control
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United States of America Patent
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Jun 15, 2010
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Dec 20, 2007
app pub date -
May 23, 2005
filing date -
May 23, 2005
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Abstract
A water purifying unit generates pure water by eliminating impurity ions from dielectric fluid. A corrosion-protection-ion generating unit generates corrosion protection ions, substitutes predetermined cations for impurity cations contained in the dielectric fluid, and substitutes the corrosion protection ions for impurity anions contained in the dielectric fluid. A switching unit switches a supply of the dielectric fluid between the water purifying unit and the corrosion-protection-ion generating unit. A switching control unit controls the switching unit based on a conductivity of the dielectric fluid measured by a conductivity measuring unit.
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