Device for fabricating thin-walled metal cylinders

Details Device for fabricating thin-walled metal cylinders Device for fabricating thin-walled metal cylinders

1978-12-14

1980-04-22

Prescott, Arthur C.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204224R, C25D 704

Patent

active

041994264

ABSTRACT:
In an apparatus having an expandable mandrel die cylinder for electro-plating thereon a thin-walled, hollow, metal cylinder with a closed or perforated wall, the hollow die cylinder is loosely fitted at its ends over support flanges. The clearance space between the cylinder and the flanges is sealed by a soft gasket and electrically bridged. During the plating, the die cylinder is radially expanded practically uniformly along its length by a pressurizing of the hollow space inside it. After completion of the plating, the pressure is released to contract the die cylinder and the metal cylinder which has been plated on the die cylinder is separated from it.

REFERENCES:
patent: 1733404 (1929-10-01), Fahrenwald
patent: 2689215 (1954-09-01), Bart
patent: 3193450 (1965-07-01), Herbert et al.
patent: 3743590 (1973-07-01), Roll

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