| 发明名称 |
METHOD FOR CONTINUOUSLY CASTING FERRITIC STAINLESS STEEL STRIPS FREE OF MICROCRACKS |
| 摘要 |
The invention concerns a method for continuously casting a ferritic stainless steel strip with thickness not more than 10 mm directly from liquid metal between two cooled rolls with horizontal axes and driven in rotation, characterised in that: the liquid metal composition in weight percentages is as follows: %C + %N </= 0.12; % Mn </= 1; %P </= 0.4; %Si </= 1; %Mo </= 2.5; %Cr between 11 and 19; Al </= 1 %; %Ti + %Nb + % Zr </= 1; the rest being iron and the impurities resulting from preparation; the gamma p index of the liquid metal ranges between 35 % and 60 %, gamma p being defined by the formula: gamma p = 420 %C + 470 %N + 23 %Ni + 9 %Cu + 7 %Mn 11.5 %Cr 11.5 %Si 12 %Mo 23 %V 47 %Nb 49 %Ti 52 %Al + 189: the surface roughness of said rolls being more than 5 mu m; in the proximity of the meniscus metal liquid present between the rolls an inerting gas is used consisting of at least 60 % by volume of a gas soluble in steel. |
| 申请公布号 |
WO0064613(A1) |
申请公布日期 |
2000.11.02 |
| 申请号 |
WO2000FR00781 |
申请日期 |
2000.03.29 |
| 申请人 |
USINOR;MAZURIER, FREDERIC |
发明人 |
MAZURIER, FREDERIC |
| 分类号 |
B22D11/00;B22D11/06;B22D11/117;C22C38/00;C22C38/18;C22C38/26;C22C38/28 |
主分类号 |
B22D11/00 |
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