Plating current automatic compensating apparatus

Details Plating current automatic compensating apparatus Plating current automatic compensating apparatus

1987-01-20

1988-06-07

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204228, C25D 1700, C25D 2112

Patent

active

047494603

ABSTRACT:
An apparatus in which plating currents of a plurality of successive plating cells are normally automatically controlled in accordance with line speed to maintain uniform plating thickness, and in which the number of energized plating cells is increased or decreased in accordance with line speed to maintain plating current density within a predetermined range, includes tracking or timing facilities for progressively changing plating currents of plating cells in correspondence with movement of the strip being plated through the cells after the number of energized cells has been increased or decreased so as to reduce plating thickness variation on the portion of the strip within the plating cells at the time of the change in the number of energized cells.

REFERENCES:
patent: 2734858 (1956-02-01), Bachman et al.
patent: 3365382 (1968-01-01), Godschalx
patent: 3865701 (1975-02-01), Borgmann
patent: 3887452 (1975-06-01), Mannaka et al.
patent: 3947343 (1976-03-01), Delves-Broughton et al.
patent: 4240881 (1980-12-01), Stanya
patent: 4497695 (1985-02-01), Shinkai et al.

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