Electric heating – Metal heating – Cutting or disintegrating
Patent
1993-11-02
1996-07-23
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
219 6917, 252572, B23H 108
Patent
active
055391737
ABSTRACT:
An EDM fluid comprising in mixture, a liquid dielectric and a powder, including polycrystalline silicon and a small amount of inorganic oxide, provided for forming a smooth workpiece surface having a carbon-iron-silicon alloy. The powder is preferably present in an amount ranging from about 0.1 to 5.0 wt. % of the liquid dielectric. The inorganic oxide may include silicon oxide, iron oxide, and calcium oxide. Further, a concentrate made by kneading the powder with an oil comprising mainly an aromatic hydrocarbon having a density of more than 0.93 g/milliliter at 15.degree. C. added to the dielectric, whereby the powder is dispersed uniformly.
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Evans Geoffrey S.
Sodick Co. Ltd.
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