Production of highly rust resistant tinplate sheets for...

Details Production of highly rust resistant tinplate sheets for... Production of highly rust resistant tinplate sheets for...

C - Chemistry, Metallurgy

23

C

148/20, 204/21.6

C23C 28/00 (2006.01) C25D 5/12 (2006.01) C25D 5/50 (2006.01) C25D 11/38 (2006.01)

Patent

CA 1204075

TITLE OF THE INVENTION Production of Highly Rust Resistant Tinplate Sheets for Welded Cans. ABSTRACT A process for improving the rust and corrosion resistance of thinly coated tinplate is disclosed, wherein a blank sheet electroplated with 0.02 - 0.2g/m2 of nickel prior to annealing is electroplated with 0.05 - 1.5g/m2 of tin, subsequently being treated with chromate at 0.3 - 10 coulomb/sq.dm. followed by 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.

404828

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