doi:10.1007/s12613-019-1957-8

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文章导航 > 矿物冶金与材料学报（英文） > 2020 > 27(8): 1083-1099

Yang Li, Chang-yong Chen, Guo-qing Qin, Zhou-hua Jiang, Meng Sun, and Kui Chen, Influence of crucible material on inclusions in 95Cr saw-wire steel deoxidized by Si–Mn, Int. J. Miner. Metall. Mater., 27(2020), No. 8, pp. 1083-1099. https://doi.org/10.1007/s12613-019-1957-8

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Yang Li, Chang-yong Chen, Guo-qing Qin, Zhou-hua Jiang, Meng Sun, and Kui Chen, Influence of crucible material on inclusions in 95Cr saw-wire steel deoxidized by Si–Mn, Int. J. Miner. Metall. Mater., 27(2020), No. 8, pp. 1083-1099. https://doi.org/10.1007/s12613-019-1957-8

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Influence of crucible material on inclusions in 95Cr saw-wire steel deoxidized by Si–Mn

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Abstract

Abstract

To investigate the interaction mechanism between 95Cr saw-wire steel and different refractories, we conducted laboratory experiments at 1873 K. Five crucible materials (SiO₂, Al₂O₃, MgO·Al₂O₃, MgO, and MgO–CaO) were used. The results indicate that SiO₂, Al₂O₃, and MgO·Al₂O₃ are not suitable for smelting low-oxygen, low-[Al]_s 95Cr saw-wire steel, mainly because they react with the elements in the molten steel and pollute the steel samples. By contrast, MgO–CaO is an ideal choice to produce 95Cr saw-wire steel. It offers three advantages: (i) It does not decompose by itself at the steelmaking temperature of 1873 K because it exhibits good thermal stability; (ii) [C], [Si], and [Mn] in molten steel cannot react with it to increase the [O] content; and (iii) it not only desulfurizes and dephosphorizes but also removes Al₂O₃ inclusions from the steel simultaneously. As a result, the contents of the main elements ([C], [Si], [Mn], [Cr], N, T.O (total oxygen)) in the steel are not affected and the content of impurity elements ([Al]_s, P, and S) can be perfectly controlled within the target range. Furthermore, the number and size of inclusions in the steel samples decrease sharply when the MgO–CaO crucible is used.
- nonmetallic inclusions;
- 95Cr saw-wire steel;
- crucible material;
- MgO–CaO refractory

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Influence of crucible material on inclusions in 95Cr saw-wire steel deoxidized by Si–Mn

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