Usinor

Usinor Sacilor

Ugine Sa

Bernard Vialatte

Henri Giraud

Bernard Tetu

Jean-Pierre Malingriaux

Michel Ternisien

Jean Veyer

Jean-Michel Damasse

Luc Vendeville

Yann Breviere

Paul Didier

Francis Chassagne

Martine Lauvergne

Joel Tagalian

Hugues Legrand

Marhine Lauverane

A stainless steel band is continuously cast. The stainless steel band is descaled and cold rolled. The cold rolled band is annealed and descaled or bright annealed. The band is finish formed and finally coiled. The stainless steel band is not coiled after being continuously cast and before being finally coiled.

Installation for making cold rolled stainless steel bands

Process for the pickling of metallic materials

Continuous production line for producing a strip of rolled sheet of steel comprising applying to said sheet of steel an aqueous pickling solution containing hydrochloric acid and ferric and ferrous pickling irons in solution, and, for the purpose of maintaining a constant pickling power of the aqueous solution of hydrochloric acid having a pH lower than 1, maintaining the concentration of Fe.sup.3+ ions at a value between 1 g/liter and 300 g/liter, by reoxidation of the Fe.sup.2+ ions produced during the pickling, the REDOX potential being maintained at a value between 400 and 600 mV, the potential being measured between a platinum electrode and a reference AG/AGCl electrode which are placed in the solution.

Process for pickling a piece of steel and in particular a sheet strip of

The process comprises applying an aqueous pickling solution containing hydrochloric acid and ferric and ferrous pickling irons in solution, and, for the purpose of maintaining a constant pickling power of the aqueous solution of hydrochloric acid having a pH lower than 1, maintaining the concentration of Fe.sup.3+ ions at a value between 1 g/litre and 300 g/litre, by reoxidation by means of an oxygenation of the Fe.sup.2+ ions produced during the pickling, the REDOX potential being maintained at a value between 0 and 800 mV, the potential being measured between a platinum electrode and a reference AG/AGCl electrode which are placed in the solution.

Process for continuously producing on a production line a rolled stainless steel sheet product having an improved surface state, characterized in that the hot produced sheet is subjected to a treatment comprising at least:

Process for the continuous production of a rolled stainless steel sheet

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Le Creusot, France

Bernard Vialatte