东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (9): 1273-1277.DOI: 10.3969/j.issn.1005-3026.2015.09.013

• 材料与冶金 • 上一篇    下一篇

硫质量分数对Ti-Zr脱氧E36钢中夹杂物的影响

战东平1, 唐磊1, 姜周华1, 张慧书2   

  1. (1. 东北大学 材料与冶金学院, 辽宁 沈阳110819; 2. 辽宁科技学院 冶金学院, 辽宁 本溪117004)
  • 收稿日期:2014-08-06 修回日期:2014-08-06 出版日期:2015-09-15 发布日期:2015-09-14
  • 通讯作者: 战东平
  • 作者简介:战东平(1976-),男,黑龙江鹤岗人,东北大学副教授; 姜周华(1963-),男,浙江萧山人,东北大学教授,博士生导师.
  • 基金资助:
    国家高技术研究发展计划项目(2012AA03A503); 辽宁科技学院博士启动基金资助项目(1406B06).

Effect of Sulfur Mass Fraction on Inclusions in Steel E36 Deoxidized by Titanium and Zirconium

ZHAN Dong-ping1, TANG Lei1, JIANG Zhou-hua1, ZHANG Hui-shu2   

  1. 1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China; 2. School of Metallurgy, Liaoning Institute of Science and Technology, Benxi 117004, China.
  • Received:2014-08-06 Revised:2014-08-06 Online:2015-09-15 Published:2015-09-14
  • Contact: ZHAN Dong-ping
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摘要: 为明确钢中硫质量分数对Ti-Zr脱氧的E36船板钢中夹杂物的影响,在1873K下,在MoSi2电阻炉上用70mm×100mm MgO坩埚开展了3炉E36钢炼钢实验.结果表明,Ti-Zr脱氧钢中夹杂物主要以含TiO○x和ZrO2成分的外围包裹MnS的球形夹杂物为主,典型夹杂物为Al2O3-TiO○x-MnS,MgO-SiO2-Al2O3,Al2O3-SiO2-TiO○x-ZrO2,TiO○x-SiO2-Al2O3-MnS等.随着硫质量分数的增加,小于10μm的夹杂物所占比例逐渐提高到99.5%,夹杂物平均直径由1.7μm增大到2.3μm,夹杂物中平均硫质量分数和单个夹杂物中MnS所占的面积百分比均增加,w[S]=0.001 5%时面积比为0.15%,w[S]=0.011%时面积比达到0.72%.

关键词: 炼钢, 船板钢, 硫质量分数, 夹杂物, 脱氧

Abstract: In order to study the effect of sulfur mass fraction on inclusions in steel E36 deoxidized by titanium and zirconium, steelmaking experiments of three heats of steel E36 were done in a MoSi2 furnace with 70mm×100mm MgO crucible at 1873K. The results showed that most of the inclusions in steel E36 deoxidized by titanium and zirconium are spherical inclusions of TiO○x and ZrO2 coated by MnS. The typical inclusions are Al2O3-TiO○x-MnS, MgO-SiO2-Al2O3, Al2O3-SiO2-TiO○x-ZrO2 and TiO○x-SiO2-Al2O3-MnS. With the increasing of the sulfur mass fraction in steel, the inclusion percentages with the diameter less than 10μm increase to 99.5%; the average diameter of the inclusions reaches 2.3μm from 1.7μm; the sulfur mass fraction in the inclusions and the area of MnS in single inclusion are also bigger, the area is 0.15% when w[S] is 0.001 5%, and it becomes 0.72% when w [S] is 0.011%.

Key words: steelmaking, ship plate steel, sulfur mass fraction, inclusion, deoxidation

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