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Volume 10 Issue 4
Aug.  2019
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WEN Kun, LI Jing, YAN Wei, SUN Yanhui. Study on the control of D inclusion in the SWRH82B steel by CaO-SiO2-Al2O3-CaF2 refining slag[J]. Nonferrous Metals Science and Engineering, 2019, 10(4): 7-15. DOI: 10.13264/j.cnki.ysjskx.2019.04.002
Citation: WEN Kun, LI Jing, YAN Wei, SUN Yanhui. Study on the control of D inclusion in the SWRH82B steel by CaO-SiO2-Al2O3-CaF2 refining slag[J]. Nonferrous Metals Science and Engineering, 2019, 10(4): 7-15. DOI: 10.13264/j.cnki.ysjskx.2019.04.002
shu

Study on the control of D inclusion in the SWRH82B steel by CaO-SiO2-Al2O3-CaF2 refining slag

  • a.

    Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China

  • b.

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

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  • Received Date: March 19, 2019
  • Published Date: August 30, 2019
    Graphical Abstract
    • Abstract
  • The effect of refining slag on the total oxygen content and D class inclusions in SWRH82B steel was studied by laboratory slag/steel reaction equilibrium experiments; The formation conditions of MgO·Al2O3 spinel inclusions is explained from chemistries of molten steels and slag compositions by Fact-Sage software. The results show that low basicity and high Al2O3 content of refining slag is beneficial to the removal of D class inclusions; The melting point of primary style composite oxide inclusions become higher while basicity and Al2O3 content of refining slag is getting increase. Melting point get to lowest when basicity and Al2O3 content is 0.93 and 5.1% respectively; Compare with controlled trial, MgO·Al2O3 spinel inclusions exist in steel when basicity and Al2O3 content of slag is 1.14 and 25.6% respectively.
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    • References (25)
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