Ugine Sa

Thyssen Stahl Ag

Jean-Claude Bavay

Philippe Demarez

Pascal Amelot

Frederic Mazurier

This sheet metal comprises a substrate (12) made of stainless steel containing more than 16% of chromium in its weight composition, coated with a metal layer (16) containing chiefly tin. Between the metal layer (16) and the substrate (12) the sheet metal comprises a layer (14) of an intermetallic compound containing at least iron, chromium and tin. To manufacture this sheet metal, a layer (16) of metallic coating containing chiefly tin is deposited by an electrolytic route on a sheet (12) made of stainless steel. The coated sheet metal is heated to a temperature above the melting temperature of the coating layer (16) to permit the formation of the intermetallic compound. The heating is maintained for a sufficient period for the surface of the coating layer (16) to have a matt appearance.

Process for the manufacture of a coated stainless steel sheet

Method for producing a magnetic steel strip having a thickness of less than 5 mm and containing, in composition by weight, more than 2% silicon, less than 0.1% carbon and a suitable amount of secondary recrystallization inhibiting elements, the balance being iron, obtained by a direct casting on one roll or between two rolls, characterized in that it comprises creating a crystallization structure comprising oriented grains {110} &lt;001&gt; in the skin, i.e. on the surface of a quench zone, by the sudden cooling of the steel in contact with the roll or rolls whose surface temperature is lower than 400.degree. C.

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Isbergue, France

Jean-Claude Bavay