公开(公告)号：US06739383B1

公开(公告)日：2004-05-25

申请号：US09959210

申请日：2002-01-14

申请人： Christian Marchionni ,  Frédéric Mazurier ,  Jean-Michel Damasse ,  Frédéric Descaves

发明人： Christian Marchionni ,  Frédéric Mazurier ,  Jean-Michel Damasse ,  Frédéric Descaves

IPC分类号： B22D1106

CPC分类号： B22D11/0651 ,  B22D11/002 ,  B22D11/0622 ,  B22D11/0697 ,  C22C38/40

摘要： 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≦0.08%; %Si≦1; %P≦0.04; %Mn≦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 Creq/Nieq ranges between 1.55 and 1.90 with: Creq(%)=%Cr+1.37 %Mo+1.5 %Si+2%Nb+3 %Ti; Nieq(%)=%Ni+0.31 %Mn+22 %C+14.2 %N+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.

摘要翻译： 本发明涉及一种用于在两个冷却的水平辊之间直接从液态金属连续铸造厚度不大于10mm的奥氏体不锈钢带的方法，其特征在于：所述钢组合物的重量比包括：％C <= 0.08 ％; ％Si <= 1; ％P <= 0.04; ％Mn <= 2; 17至20之间的Cr％ ％Ni在8和10.5之间; ％S在0.007和0.040之间; 其余为铁和由制备而产生的杂质; Creq / Nieq的范围在1.55和1.90之间，其中：Creq（％）=％Cr + 1.37％Mo + 1.5％Si + 2％Nb + 3％Ti; Nieq（％）=％Ni + 0.31％Mn + 22％C + 14.2％N + Cu; 辊的表面包括具有或多或少圆形或椭圆形横截面的连续凹坑，直径在100和1500μm之间，深度在20和150μm之间; 围绕弯液面的惰化气体是可溶于钢或这种气体的混合物的气体，或者由至少50体积％的这种气体或气体混合物组成。