Production of corrosion resistant seam-free can bodies from tinp

Details Production of corrosion resistant seam-free can bodies from tinp Production of corrosion resistant seam-free can bodies from tinp

1976-10-26

1978-06-20

Keenan, Michael J.

113120H, B21D 5126

Patent

active

040955443

ABSTRACT:
In the production of a seam-free can body from a sheet of flow brightened electrolytic tinplate by a method involving cold forming which includes a drawing step alone or a drawing step plus a redrawing step or plus a wall ironing step to produce a cold formed cup having inherently poor corrosion resistance, the improvement which comprises heat treating the cold formed cup at a temperature ranging from about 400.degree. to about 448.degree. F. for a period of time between about 10 minutes at the lower end of the temperature range and about 10 seconds at the upper end of the temperature range.

REFERENCES:
patent: 3129150 (1964-04-01), Newbrander et al.
patent: 3360157 (1967-12-01), Bolt et al.
patent: 3779798 (1973-12-01), Clinton et al.
patent: 3869261 (1975-03-01), Katsuma
patent: 3934527 (1976-01-01), Saunders
patent: 4055272 (1977-10-01), Beese

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