Production of highly rust resistant tinplate sheets for welded c

Details Production of highly rust resistant tinplate sheets for welded c Production of highly rust resistant tinplate sheets for welded c

1982-06-03

1984-08-28

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 351, 204 373, 204 40, 428648, C25D 512, C25D 550

Patent

active

044682921

ABSTRACT:
A process for improving the rust and corrosion resistance of thinly coated tinplate is disclosed, wherein a steel sheet coated with 0.02-0.2 g/m.sup.2 of nickel prior to annealing is coated with 0.05-1.5 g/m.sup.2 of tin, subsequently being trated with 0.3-10 C/dm.sup.2 of chromate and then subjected to a treatment of melting tin (reflow). A layer of alloy thus formed is highly rust resistant and structurally different from any of those formed on thinly coated tinplate according to the prior art, so that highly rust resistant tinplate sheets for use in the manufacture of welded cans can be obtained.

REFERENCES:
patent: 3890164 (1975-06-01), Harada et al.
patent: 3925171 (1975-12-01), Jargon et al.
patent: 3978803 (1976-09-01), Asano et al.
patent: 4035248 (1977-07-01), Asano et al.
patent: 4104135 (1978-08-01), Fujimaki et al.
patent: 4388158 (1983-06-01), Inui et al.

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