EDM Method and apparatus using liquid hydrocarbon decomposition

Details EDM Method and apparatus using liquid hydrocarbon decomposition EDM Method and apparatus using liquid hydrocarbon decomposition

1983-03-10

1985-04-02

Envall, Jr., Roy N.

Electric heating

Metal heating

Cutting or disintegrating

219 69M, 219 69W, B23P 108

Patent

active

045089507

ABSTRACT:
An improved EDM method and apparatus in which a hydrocarbon liquid such as kerosene is decomposed, outside of an EDM gap, to produce therefrom gases containing gaseous hydrocarbons, which gases are injected into the machining gap immersed in a deionized water liquid coolant. The liquid hydrocarbon is so decomposed, e.g. thermally, as to yield these gases which contain 30 to 85% hydrogen and the balance essentially the gaseous hydrocarbons. The thermal decomposition uses heating the liquid hydrocarbon at a temperature not in excess of 300.degree. C. The liquid hydrocarbon decomposition gases may be entrained in a stream of a deionized water for delivery into the EDM gap whose region is immersed in a continuous volume of the deionized water. The decomposition of the liquid hydrocarbon may be carried out in a separate thermal decomposition system connected to the machining gap via a continuous conduit communicating a source of the liquid hydrocarbon with the machining gap.

REFERENCES:
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patent: 2978569 (1961-04-01), Boretti et al.
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patent: 3939321 (1976-02-01), Bertrand et al.
patent: 4263493 (1981-04-01), Kilcher
patent: 4317019 (1982-02-01), Itoh
patent: 4375588 (1983-03-01), Frei

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