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Interaction between microporous magnesia castable and 38CrMoAl steel |
Cheng Yuan1, Yu Liu1, Guang-qiang Li1,2, Yong-shun Zou3, Ao Huang1 |
1 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; 2 Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; 3 Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China |
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Abstract The microporous magnesia refractory shows a promising application prospect as tundish lining due to excellent thermal insulation and slag resistance. The effect of interaction between microporous magnesia castable and 38CrMoAl steel containing 0.876 wt.% Al on the cleanliness of 38CrMoAl steel was studied and compared with that of fused magnesia castable. The results show that the micropores in the microporous magnesia castable can promote the formation of dense and continuous MgO-Al2O3 layer, which can inhibit the further pollution of molten steel by refractories, whereas the MgO-Al2O3layer formed in test of fused magnesia castable is not continuous. After 30 min holding, the total oxygen content in the steel samples for the test of microporous magnesia castable is only 42.2% of that for the test of fused magnesia castable. The inclusions in the steel samples for the test of microporous magnesia castable are also less than those for the test of fused magnesia castable. It shows that microporous magnesia castable is a promising tundish refractory for the preparation of clean high-Al steel.
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Cite this article: |
Cheng Yuan,Yu Liu,Guang-qiang Li, et al. Interaction between microporous magnesia castable and 38CrMoAl steel[J]. Journal of Iron and Steel Research International, 2023, 30(03): 516-524.
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[1] |
D. Fuchs, T. Tobie, K. Stahl. Challenges in determination of microscopic degree of cleanliness in ultra-clean gear steels[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(10): 1583-1600. |
[2] |
Wei-sheng Wang, Hang-yu Zhu, Ming-ming Song, Jian-li Li, Zheng-liang Xue. Effect of ferromanganese additions on non-metallic inclusion characteristics in TRIP steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(09): 1464-1473. |
[3] |
Jie Yang, Deng‑fu Chen, Miao‑yong Zhu. Crystallization and heat transfer of CaO–SiO2-based slag for high-Mn–high-Al steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 788-795. |
[4] |
Ding-li Zheng, Cheng-bin Shi, Zhi-jun Li, Jing Li, Jung-wook Cho. Effect of SiO2 substitution with Al2O3 during high-Al TRIP steel casting on crystallization and structure of low-basicity CaO–SiO2-based mold flux[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(1): 33-41. |
[5] |
Lei Zhang, Wan-lin Wang, Han-qing Shao. Review of non-reactive CaO–Al2O3-based mold fluxes for casting high-aluminum steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2019, 26(4): 336-344. |
[6] |
Sunday Abraham . Rick Bodnar . Justin Raines . Yufeng Wang. Inclusion engineering and metallurgy of calcium treatment[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2018, 25(2): 133-145. |
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