Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1984-05-30
1985-12-17
Valentine, Donald R.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
2041293, 20412946, 2041295, 2041296, 204224M, 204217, 219 68, 219 69M, B23P 104, B23P 106, B23P 110, C25F 314
Patent
active
045591156
ABSTRACT:
Efficient, high-precision machining of ceramic materials is achieved by supplying onto a workpiece of a ceramic material a liquid electrolyte having components at least one of which is normally inert to but becomes chemically reactive with the ceramic material at an elevated temperature, and applying to a limited zone of interface between the liquid electrolyte and the workpiece, localized energy of a magnitude sufficient to heat the liquid electrolyte and the ceramic material there to the elevated temperature and to remove from the workpiece the locally heated ceramic material in a form at least partially chemically degenerated with that electrolytic component. The limited zone acquiring the localized energy is displaced in a scanning manner from one region to another on the workpiece along numerically programmed path to consecutively remove the ceramic material along the path from the workpiece.
REFERENCES:
patent: 3475312 (1969-10-01), Inoue
patent: 3706645 (1972-12-01), Lasser
patent: 4063063 (1977-12-01), Funck et al.
patent: 4283259 (1981-08-01), Melcher et al.
patent: 4379022 (1983-04-01), Melcher et al.
patent: 4409075 (1983-10-01), Kolbesen
patent: 4448656 (1984-05-01), Kuromatsu
Dubno Herbert
Inoue-Japax Research Incorporated
Ross Karl F.
Valentine Donald R.
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