Wire-cut electroerosion apparatus

Details Wire-cut electroerosion apparatus Wire-cut electroerosion apparatus

1994-02-24

1995-01-10

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6918, B23H 704

Patent

active

053809742

ABSTRACT:
A wire-cut electroerosion apparatus for machining a workpiece, using a wire electrode, comprising a current pickup for delivering current to the wire electrode and a power circuit for applying a reverse-polarity voltage across a machining gap through the current pickup with the workpiece being negatively poled and the wire electrode being positively poled to inhibit electrolytic effects on the workpiece. A sacrifice conductor, made of a material such as zinc, having a larger ionization tendency than that of the current pickup, is provided in the vicinity of the current pickup to thereby inhibit undesirable electrolytic effects on the current pickup.

REFERENCES:
patent: 4347425 (1982-08-01), Obara
patent: 5304288 (1994-04-01), De Beurs et al.

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