EDM using two separate dielectric fluids and a system for mainta

Details EDM using two separate dielectric fluids and a system for mainta EDM using two separate dielectric fluids and a system for mainta

1982-02-26

1986-12-09

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

137172, 137563, 2041291, 210126, 210800, 210805, 219 69M, B23H 110, B23H 736, B01D 17025

Patent

active

046281703

ABSTRACT:
In an electric discharge machining method, a workpiece is subjected to an electric discharge machining at a high working speed using water as the dielectric fluid, and after this, the workpiece is finish-machined using oil as the dielectric fluid. An apparatus for carrying out the method has a feeding system for selectively feeding water or oil as the quenched surface of a workpiece is removed by using water as a dielectric fluid in electric discharge machining (EDM) the dielectric fluid to a machining gap between the workpiece and a tool electrode and a returning device for selectively returning the dielectric fluid used in the machining gap to an oil tank or a water tank.

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"The Role of the Dielectric Fluid in EDM", by Terry Hockenberry in ASE, pp. 1-9, Oct. 11, 1968.
"Fundamentals of the EDM Process", by Reda, in EDM Digest, pp. 12-17, in Mar./Apr. Issue 1980.

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