Method for electrodeposition coating

Details Method for electrodeposition coating Method for electrodeposition coating

1987-12-08

1989-04-25

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041809, 204300EC, 204279EC, C25D 1306, C25D 1716

Patent

active

048245380

ABSTRACT:
A method for the electrodeposition coating of workpieces conveyed in an electrodeposition bath, wherein voltage application means is provided in a plurality of stages in the conveying direction of the workpieces. In the method, the type of workpiece being conveyed is detected, and the length of time to apply voltage to the workpiece in the bath according to the type of workpiece by changing the number of stages to be electrically coupled among the plurality of stages of the voltage application means. By this method, it becomes possible to provide each workpiece with most suitable electrodeposition film thickness even in a line where workpieces having different required film thicknesses are present.

REFERENCES:
patent: 3728242 (1973-04-01), Loop et al.
patent: 4486284 (1984-12-01), Mori et al.
Metal Finishing, G.E.F. Brewer, Sep. 1980, pp. 55-59.
Patent Abstracts of Japan, Field C, vol. 9, No. 32, Feb. 9, 1985.

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