Method for producing bright stainless steel

Details Method for producing bright stainless steel Method for producing bright stainless steel

1983-07-29

1984-05-22

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 106

Patent

active

044500580

ABSTRACT:
A method for producing bright surface quality stainless steel strip by continuous annealing cold-rolled strip in air followed by electrolytically descaling said annealed strip by making the strip the anode and applying electric current to the strip while the strip is in an electrolyte consisting essentially of an aqueous solution of at least one neutral salt which may be a chloride, sulfate or nitrate or an alkali metal, including aluminum, with the pH of the electrolyte being maintained between 1 and 7. In this manner, a scale-free, bright annealed-like surface is produced after air annealing without requiring annealing in a controlled atmosphere furnace.

REFERENCES:
patent: 3025225 (1962-03-01), Snyder
patent: 3043758 (1962-07-01), Machu
patent: 3642586 (1972-02-01), Shepard
patent: 4012299 (1977-03-01), Zaremski et al.
patent: 4363709 (1982-12-01), Zaremski

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