Electrical machining using an aqueous solution with a recycled s

Details Electrical machining using an aqueous solution with a recycled s Electrical machining using an aqueous solution with a recycled s

1983-06-21

1985-11-05

Envall, Jr., Roy N.

Electric heating

Metal heating

Cutting or disintegrating

20412975, 210223, 210695, 210711, 210712, 210737, B01D 1700, B23P 116

Patent

active

045516022

ABSTRACT:
An electrical machining system utilizing a machining liquid consisting at least in a major part of an aqueous solution containing a deionized water and a surface active agent dissolved therein, the latter having a temperature-dependent solubility in the solution and a cloud point, i.e. a temperature below which it remains dissolved therein. The machining liquid is supplied into a machining zone which produces a liquid effluent in which machining products are entrapped. The liquid effluent is fed to a separation zone where it is heated at a temperature above its cloud point to separate out an amount of the surface active agent and to collect that amount substantially in a solid form while forming a liquid output constituted by a remainder of the liquid effluent. The surface active agent is collected by deposition on a carrier material, e.g. iron particles. When iron particles are used, an electromagnet may be employed to decrease the time necessary to recover the surface active agent. The carrier material having the deposit of the surface active agent may be brought into contact with a cool deionized water to form a solution of the collected surface active agent therein.

REFERENCES:
patent: 3469057 (1969-09-01), Maines
patent: 3477948 (1969-11-01), Inoue
patent: 3657119 (1972-04-01), Turbeville
patent: 4002562 (1977-01-01), Ames et al.
patent: 4057495 (1977-11-01), Kinoshita et al.
patent: 4375588 (1983-03-01), Frei

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