Mechanism and effect of calcium treatment on oil casing steels

TANG Hai-yan; LI Jing-she; YANG Shu-feng; WANG Jian-bin

doi:10.13374/j.issn1001-053x.2009.s1.027

Volume 31 Issue S1

Aug. 2021

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Article Navigation > Chinese Journal of Engineering > 2009 > 31(S1): 125-129

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

doi: 10.13374/j.issn1001-053x.2009.s1.027

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2009-10-10
Available Online: 2021-08-09

Abstract

Abstract

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.
- calcium treatment,
- sulfide,
- alumina,
- mechanism,
- inclusion modified