Usinor

Fr&eacute;d&eacute;ric Descaves

Jean-Michel Damasse

Christian Marchionni

Fr&eacute;d&eacute;ric Mazurier

The invention concerns a method for continuously casting an austenitic stainless steel strip with a thickness not more than 10 mm, directly from liquid metal, between two cooled horizontal rolls, characterised in that: said steel composition in weight proportions comprises: %C&lE;0.08%; %Si&lE;1; %P&lE;0.04; %Mn&lE;2; %Cr between 17 and 20; %Ni between 8 and 10.5; %S between 0.007 and 0.040; the rest being iron and the impurities resulting from preparation; the ratio Cr /Ni ranges between 1.55 and 1.90 with: Cr (%)&equals;%Cr&plus;1.37 %Mo&plus;1.5 %Si&plus;2%Nb&plus;3 %Ti; Ni (%)&equals;%Ni&plus;0.31 %Mn&plus;22 %C&plus;14.2 %N&plus;Cu; the surface of the rolls comprises contiguous dimples with more or less circular or elliptical cross-section, of diameter between 100 and 1500 &mgr;m and depth between 20 and 150 &mgr;m; the inerting gas surrounding the meniscus is a gas soluble in steel or a mixture of such gases, or consists of at least 50% by volume of such a gas or mixture of gases.

Growing community of inventors

Isbergues, France

Frédéric Descaves

Growing community of inventors

Isbergues, France

Fr&eacute;d&eacute;ric Descaves

Frédéric Descaves