Other

Sollac

Sollac and Denain-anzin Mineraux

Bernard Debiesme

Jean-Paul Radot

Denis Coulombet

Claude Lefebvre

Corinne Damerval

Yves Roux

Veronique Sardoy

Anne Blanchard

Jean-No&euml;l Pontoire

Gilles Dahmen

Pascal Choquet

Isabelle Poissonnet

Jean-Noel Pontoire

A killed and vacuum-degassed very-low-carbon steel containing, by weight, between 0.10 and 0.35% manganese, less than 0.006% nitrogen, less than 0.025% phosphorus, less than 0.020% sulphur, less than 0.020% silicon, at most 0.08% of at least one of the elements copper, nickel and chromium, as well as aluminum. The steel is cast in the form of a slab, the slab is hot rolled in order to obtain a hot-rolled sheet, the hot-rolled sheet is coiled, the hot-rolled sheet is cold rolled in two rolling operations separated by a continuous annealing operation. The steel contains at most 0.006% carbon by weight and 0.010% aluminum and the hot-rolled sheet is coiled at a temperature below 620&deg; C. Preferably, the steel is killed by mixing with a slag containing adjusted amounts of aluminum and of alumina.

Process for producing a thin sheet of ultra-low-carbon steel for the manufacture of drawn products for packaging and thin sheet obtained

A method of making a powder for covering an ingot mold for the continuous casting of steel, in particular steels with ultra-low carbon content. The powder comprises a base powder and particles of at least one metal nitride, its free carbon content being between 0 and 1% by weight, the method comprising forming a slip of raw materials for the basis powder, at least one metal nitride and water and atomizing the slip to form a mist and drying the mist to form granules having diameters lying between 20 &mgr;m and 800 &mgr;m.

Mold cover powder for continuous casting of steel, especially very-low-carbon steels

Mould cover for continuous casting of steel, especially very-low-carbon

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Ghyvelde, France

Bernard Debiesme