TANG Hai-yan, LI Jing-she, YANG Shu-feng, WANG Jian-bin. Mechanism and effect of calcium treatment on oil casing steels[J]. Chinese Journal of Engineering, 2009, 31(S1): 125-129. DOI: 10.13374/j.issn1001-053x.2009.s1.027
Citation: TANG Hai-yan, LI Jing-she, YANG Shu-feng, WANG Jian-bin. Mechanism and effect of calcium treatment on oil casing steels[J]. Chinese Journal of Engineering, 2009, 31(S1): 125-129. DOI: 10.13374/j.issn1001-053x.2009.s1.027
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Mechanism and effect of calcium treatment on oil casing steels

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  • A systematic investigation was carried on the variations of total oxygen content and inclusion types in 39Mn2V steel before and after calcium treatment.The modification mechanism of Al2O3 and MnS was analyzed by thermodynamics.The results show that Al2O3 can be wholly modified into 12CaO·7Al2O3 and 3CaO·Al2O3 inclusions which are liquid at steelmaking temperature,while MnS just can be modified partially into CaS under the present amount of Ca-Si wire fed.
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