Electrical discharge machining apparatus and electrical discharge machining method
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United States of America Patent
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Nov 15, 2011
Grant Date -
Nov 12, 2009
app pub date -
Oct 18, 2006
filing date -
Oct 18, 2006
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Abstract
An electrical-discharge machining apparatus for machining a workpiece using an aqueous machining fluid includes an insulator for electrically insulating a machine platen from the workpiece where the workpiece is placed. A machining-fluid-property measuring instrument measures the state of the machining fluid; and a machining-fluid-property controller maintains the pH of the machining fluid so as to be kept within 8.5 through 10.5.
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