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首页> 外文期刊>Steel Research International >Optimization of Slag Chemistry Toward Inclusion Control for 28CrMo47 Drill Pipe Steel Based on Viscosity and Equilibration Studies
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Optimization of Slag Chemistry Toward Inclusion Control for 28CrMo47 Drill Pipe Steel Based on Viscosity and Equilibration Studies

机译：基于粘度和平衡研究的28crmo47钻杆塑料化学优化塑料控制

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摘要

During the refining of 28CrMo47 drill pipe steel, it is found that the product often has internal defects and cracks. The present work is initiated with a view to examine if these problems could be solved by optimizing the slag chemistry of the refining slag. Three series of slags, namely, slag A (57.09% CaO-15.74% SiO2-16.35% Al2O3-5.35% MgO, original slag in the steel plant), slag B (55% CaO-21% SiO2-12% Al2O3-7% MgO-5% CaF2), and slag C (51% CaO-17% SiO2-25% Al2O3-7% MgO) are designed and their viscosities are measured. The effect of Al2O3 content on viscosity of the slag C is also investigated as part of the slag optimization. Slag-steel equilibrium experiments are subsequently carried out in order to understand the effect of the slag chemistry, especially the variation in the Al2O3 content in the same on the inclusions in drill pipe steel. It is concluded that both increasing Al2O3 content of the slag used in the refining unit in the plant and addition of CaF2 could decrease effectively the slag viscosity. Inclusions in steel equilibrated with slag C1, corresponding to 51% CaO-7% MgO-25% Al2O3-17SiO(2), consisted mainly of low melting point CaO-Al2O3 complex, which did not have any negative effect on the steel quality.
机译：在28Crmo47钻管钢的精炼过程中，发现该产品通常具有内部缺陷和裂缝。如果通过优化精炼渣的渣化学可以解决这些问题，则启动本工作。三个系列渣，即渣子A（57.09％CAO-15.74％SiO2-16.35％Al2O3-5.35％MgO，钢铁厂的原始炉渣），渣B（55％CaO-21％SiO2-12％Al2O3-7设计％MgO-5％CAF2），设计了渣油C（51％CaO-17％SiO 2-25％Al 2 O 3-7％MgO），并测量它们的粘度。作为渣优化的一部分，还研究了Al2O3含量对炉渣C粘度的影响。随后进行炉渣速度实验，以了解炉渣化学的效果，尤其是Al 2 O 3含量的变化在钻杆钢中的夹杂物上。结论是，在植物中炼油装置中使用的渣的增加含量和加入CAF2可以有效地降低渣粘度。用钢结构平衡的钢中的夹杂物，对应于51％CaO-7％MgO-25％Al 2 O 3-17SiO（2），主要由低熔点CaO-Al2O3复合物组成，这对钢质没有任何负面影响。

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  • 来源
    《Steel Research International》 |2016年第6期|共9页
  • 作者

    Sui Yafei; Yue Changsheng; Peng Ben; Wang Canguo; Guo Min; Zhang Mei; Seetharaman Seshadri;

  • 作者单位

    Univ Sci &

    Technol Beijing State Key Lab Adv Met Beijing 100083 Peoples R China;

    Cent Res Inst Bldg &

    Construct Co Ltd MCC Grp Beijing 100088 Peoples R China;

    Cent Res Inst Bldg &

    Construct Co Ltd MCC Grp Beijing 100088 Peoples R China;

    Univ Sci &

    Technol Beijing State Key Lab Adv Met Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing State Key Lab Adv Met Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing State Key Lab Adv Met Beijing 100083 Peoples R China;

    Royal Inst Technol Dept Mat Sci &

    Engn SE-10044 Stockholm Sweden;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 金属学与金属工艺;
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