Electric heating – Metal heating – Cutting or disintegrating
Patent
1984-06-01
1987-03-10
Paschall, M. H.
Electric heating
Metal heating
Cutting or disintegrating
2041295, 219 69D, B23H 108, B23H 734
Patent
active
046492550
ABSTRACT:
An improved EDM system includes a partition member which separates a space surrounding a workpiece in a worktank into a first chamber which directly surrounds a machining area of the workpiece and a second chamber outside of the first chamber and surrounding a portion of the workpiece. The machining area and the first chamber are contiguous with each other and flooded with a machining medium constituted by a liquid hydrocarbon to allow successive electrical discharges to be effected therethrough to electroerosively remove material from the workpiece in the first chamber. The second chamber is flooded with a coolant constituted by a water liquid, preferably containing a non-ionic surface active agent dissolved in deionized water, in contact with this portion of the workpiece to cool the latter against heating thereof along the machining area by the erosive discharges in the first chamber.
REFERENCES:
patent: 2457234 (1948-12-01), Herbert et al.
patent: 3385947 (1968-05-01), Inoue
patent: 3399125 (1968-08-01), Mikoshiba et al.
patent: 3472993 (1969-10-01), Gromov et al.
Dubno Herbert
Evans Geoffrey S.
Inoue-Japax Research Incorporated
Paschall M. H.
Ross Karl F.
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