Method for controlling the machining current in electrochemical

Details Method for controlling the machining current in electrochemical Method for controlling the machining current in electrochemical

1993-07-30

1994-04-26

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041295, 204DIG9, B23H 300, B23H 902

Patent

active

053064020

ABSTRACT:
In electrochemical machining of workpieces a predetermined product of current quantity and machining time (amp. seconds) is necessary to remove a given quantity of material from a workpiece edge. In order to minimize machining time it is proposed to divide the machining process into at least two machining periods, a first short one during which a relatively small working current is applied and a longer second one during which a much higher working current is set. Between both periods a discontinuous momentary steep current rise in the region of 100 percent to 1000 percent is effected. Due to this new method not only the total machining time is reduced but the current feed control becomes easier and test runs in many cases are unnecessary.

REFERENCES:
patent: 4264417 (1981-04-01), Vasiliev et al.
patent: 4475995 (1984-10-01), Ziegler et al.
patent: 4885066 (1989-12-01), Kuwabara
patent: 5225053 (1993-07-01), Frembgen

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