Galvanic protection of a couch roll

Details Galvanic protection of a couch roll Galvanic protection of a couch roll

1976-03-25

1977-04-19

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Conditioning, preparing or repairing of apparatus

162272, 162369, 162372, 204148, 204197, D21F 310

Patent

active

040186482

ABSTRACT:
Galvanic electrodeposition of copper onto a cast iron vacuum box from a rubber covered brass couch shell carrying a non-conductive papermakers forming wire may be prevented by electrically connecting the brass couch shell with a sacrificial anode of more noble metal than brass by means of a conductive metal shoe pivotally secured to but electrically insulated from said vacuum box so as to run in conductive contact with the inside surface of said shell.

REFERENCES:
patent: 3108055 (1963-10-01), Grant
patent: 3141817 (1964-07-01), Collins et al.
patent: 3171776 (1965-03-01), Hart et al.
patent: 3847763 (1974-11-01), Svensson et al.

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