Method for cleaning an electrode

Details Method for cleaning an electrode Method for cleaning an electrode

1983-11-07

1986-02-25

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204164, 204192E, 204224M, 204225, 204277, 219 5622, C25F 100, C25F 700, C23C 1400, B23K 1116

Patent

active

045727724

ABSTRACT:
An electronic flame off (EFO) electrode used to form balls on bonding wire builds up layers of aluminum oxide during use. The aluminum oxide is removed by moving the EFO electrode next to a cleaning electrode, and causing a glow discharge to pass across the gap between them. The EFO electrode is charged negative with respect to the cleaning electrode, and a noble gas, such as argon, fills the region around the gap.

REFERENCES:
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patent: 2456281 (1948-12-01), Hyner
patent: 2722511 (1955-11-01), Butler et al.
patent: 3068352 (1962-12-01), Correy
patent: 3378668 (1968-04-01), Dolomont
patent: 3598954 (1971-08-01), Iceland et al.
patent: 3654108 (1972-04-01), Smith, Jr.
patent: 3900376 (1975-08-01), Copsey et al.
patent: 4387283 (1983-06-01), Peterson et al.
patent: 4388512 (1983-06-01), Salzer et al.

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