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发明公开
CN1871081A 生产铸造钢带的方法 无效 - 驳回

生产铸造钢带的方法
摘要：
本发明涉及一种生产铸造钢带(B)的方法，其中，在一个连续过程中，将钢熔体浇注到铸造间隙(4)(该铸造间隙的长侧由在铸造过程中运动的壁形成)中，形成钢带(B)，并且，存在于铸造间隙(4)上方熔池(6)中的钢熔体保持在含氮和氢的气氛(A)下。根据本发明，这类方法能够生产与现有技术相比，表面组成显著改善的高质量钢带，其中，气氛(A)中的氢含量大于0至10mol％，而且，为了调整钢带(B)的特性，在每种情况下，对铸造钢熔体中在每种情况下选择性存在以调整钢带(B)特性的Cr，Mo，Nb，Si，Ti，Ni，Mn，C或N含量进行选择，以使由Cr当量Cr当量与Ni当量Ni当量构成的比值Cr当量/Ni当量满足下式：Cr当量/Ni当量≥1.7，其中，Cr当量＝％Cr＋1.37％Mo＋2％Nb＋1.5％Si＋3％Ti，Ni当量＝％Ni＋0.31％Mn+22％C+14％N+％Cu，％Si＝相应Si含量，％Ti＝相应Ti含量，％Ni＝相应Ni含量，％Mn＝相应Mn含量，％C＝相应C含量，％N＝相应N含量。
摘要（英）：

The invention relates to a method for producing a cast steel strip (B) consisting in producing the steel strip (B) by continuously casting a molten steel into a casting opening (4) whose longitudinal sides being formed by walls movable during casting, and in holding a molten steel flowing over the casting opening in a melting pool (6) in a nitrogen and hydrogen-containing atmosphere (A). The inventive method makes it possible to produce high-quality steel strips whose surface quality is significantly improved in comparison with the state of the art. Said invention is characterised in that the hydrogen content in the atmosphere (A) is > 0 mole % to 10 mole % and the content of Cr, Mo, Nb, Si, Ti, Ni, Mn, C or N in the molten cast steel is respectively used for adjusting the properties of the steel strip (B) and respectively selected in such a way that the ratio Creq/Nieq formed by a Cr-Creq equivalent and by Ni- Nieq equivalent satisfies a Creq/Nieq = 1,7 ratio, wherein Creq = %Cr + 1.37 %Mo + 2 %Nb + 1.5 %Si + 3 %Ti and Nieq = %Ni + 0.31 %Mn + 22 %C 14 %N + %Cu, %Si = Si respective content, %Ti = Ti respective content, %Ni = Ni respective content, %Mn = Mn respective content, %C = C respective content, and %N = N respective content.

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