Control of Reoxidation Product in Oil Casing Steel

Fang Zhongqiang; Sun Yanhui; Zhu Wei; Wen Bang; Wang Zhen

doi:10.7513/j.issn.1004-7638.2018.02.022

Volume 39 Issue 2

Apr. 2018

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Fang Zhongqiang, Sun Yanhui, Zhu Wei, Wen Bang, Wang Zhen. Control of Reoxidation Product in Oil Casing Steel[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 132-136,145. doi: 10.7513/j.issn.1004-7638.2018.02.022

Citation:

Fang Zhongqiang, Sun Yanhui, Zhu Wei, Wen Bang, Wang Zhen. Control of Reoxidation Product in Oil Casing Steel[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 132-136,145. doi: 10.7513/j.issn.1004-7638.2018.02.022

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Control of Reoxidation Product in Oil Casing Steel

doi: 10.7513/j.issn.1004-7638.2018.02.022

1. Nuclear Power Institute of China, Chengdu 610041, Sichuan, China;
2. Metallurgical Engineering School, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2017-12-06

Abstract

Abstract

The shape and composition of inclusions in samples during secondary refining process were observed.A certain number of Al₂O₃ and Mg O·Al₂O₃ spinel inclusions were found besides liquid complex inclusions in tundish samples,which is caused by reoxidation during continuous casting.Then,The calcium treatment process was optimized based on the research on mechanism of reoxidation product formation and control.After optimization,the typical inclusions are liquid complex inclusions in tundish samples,while the number of Al₂O₃ and Mg O·Al₂O₃ spinel inclusions is reduced sharply.
- oil casing steel,
- calcium treatment,
- inclusion,
- reoxidation