Flat-rolled steel can stock manufacture

Details Flat-rolled steel can stock manufacture Flat-rolled steel can stock manufacture

1986-04-29

1988-02-23

Niebling, John F.

Metal deforming

With 'coating' of work

Metal coating

204 28, 204 351, 204 373, 204 387, 204 40, B21D 2220, C25D 510, C25D 550, C25D 706

Patent

active

047262087

ABSTRACT:
Composite-coated flat-rolled steel can stock processing and product for fabrication of sheet metal cans, in particular for three-piece, welded or cemented side seam cans. Single or double-reduced, low carbon, flat-rolled steel of a gage in the range of about 55 to 110 pounds per base box is flash coated with tin (0.05 #/bb), which is alloyed with the steel base metal; at least 0.20 #/bb of tin is added to one surface only, flow brightened and water quenched; chemical treatment chrome oxide coating of about 100 to 750 milligrams per square foot is added to both surfaces and an organic coating of 2.5 to 15 milligrams per square inch is added to the surface which is free of flow-brightened tin for disposition internally of a can fabricated from such coated can stock. The equivalent of quarter-pound and higher coating weight tinplate protection is provided while decreasing tin requirements and maintaining three-piece can fabrication properties not available with coating metal substitutes for tin.

REFERENCES:
patent: 3062726 (1962-11-01), Hill
patent: 3174917 (1965-03-01), Lesney et al.
patent: 3285838 (1966-11-01), Morgan et al.
patent: 3652234 (1972-03-01), Lamantia
patent: 3934527 (1976-01-01), Saunders
patent: 4113580 (1978-09-01), Tsutsui et al.
patent: 4483907 (1984-11-01), Salm
patent: 4501802 (1985-02-01), Higuchi et al.
patent: 4579786 (1986-04-01), Nakakouji et al.

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