Process and apparatus for controlling the concentration of solid

Details Process and apparatus for controlling the concentration of solid Process and apparatus for controlling the concentration of solid

1980-11-21

1983-03-01

Shaw, C. C.

Electric heating

Metal heating

Cutting or disintegrating

219 69D, 219 69C, 219 69G, 219 69P, B23P 102

Patent

active

043755887

ABSTRACT:
A method and apparatus for machining, by electrical discharges, an electrode workpiece by means of an electrode tool, wherein machining fluid supplied by a nozzle to the machining zone between the electrode tool and the electrode workpiece is returned to a tank and circulated by a pump from the tank to the nozzle through two lines, one provided with a filter and the other having no filter but controlling the flow of fluid therethrough and comprising a solid particle proportioning device. The flow rate and proportioning device is controlled by an electrical signal for regulating the concentration of solid particles in suspension in the fluid, and the adjustment for the concentration of solid particles is effected on the basis of measuring the average delay of triggering of the machining electrical discharges.

REFERENCES:
patent: 3609281 (1971-09-01), Kauffman
patent: 3699303 (1972-10-01), Kauffman et al.
patent: 3739137 (1973-06-01), Marendaz
patent: 3825714 (1974-07-01), Marendaz
patent: 4049942 (1977-09-01), Balleys et al.

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