• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Materials processing fundamentals 2018 >The Effect of a Sulfur Addition on the Formation and Behavior of CaS Inclusions During a Secondary Refining Process Without Using a Ca-Treatment
【24h】

The Effect of a Sulfur Addition on the Formation and Behavior of CaS Inclusions During a Secondary Refining Process Without Using a Ca-Treatment

机译：在不使用钙处理的情况下，二次精炼过程中添加硫对CaS夹杂物形成和行为的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study aimed to elucidate the effect of a sulfur addition on the formation and behavior of CaS inclusions in steel melts during a secondary refining process without a Ca-treatment. Samples were taken during production for two different steel grades, namely a low-S steel (S = 0.005%) and a high-S steel (S = 0.055%). Thereafter, the inclusion characteristics were determined using an SEM combined with an EDS. The results show that the CaO content in the inclusions decreased and the CaS content increased after a sulfur addition during an RH process for the high-S steel. Furthermore, CaS-covered inclusions were frequently detected in the high-S steel samples after the S addition. Thermodynamic calculations were also performed to compare the CaS formation behavior in the two steels. The results showed that a CaS phase can thermodynamically be formed in the high-S steel melt even without a Ca-treatment. Also, it was indicated that a CaS phase can be formed in two ways, namely a reaction between Ca and S and a reaction between CaO in inclusions and S. From the viewpoint of interfacial features, inclusions covered by a CaS phase are thought to possess low contact angles to steel melts. Therefore, CaS-covered inclusions tend to remain in a steel melt. According to the results of this study, CaS inclusions can be formed and deteriorate the castability of high-S containing steels even without a Ca-treatment.
机译：这项研究旨在阐明在不进行钙处理的二次精炼过程中，硫添加对钢水中CaS夹杂物的形成和行为的影响。在生产过程中对两种不同钢种进行了采样，即低S钢（S = 0.005％）和高S钢（S = 0.055％）。之后，使用结合了EDS的SEM来确定夹杂物特性。结果表明，在高S钢的RH工艺中，添加硫之后，夹杂物中的CaO含量降低而CaS含量增加。此外，添加S后，高S钢样品中经常检测到CaS夹杂物。还进行了热力学计算，以比较两种钢中CaS的形成行为。结果表明，即使不进行Ca处理，也可以在高S钢熔体中热力学形成CaS相。而且，表明CaS相可以以两种方式形成，即Ca和S之间的反应以及CaO在夹杂物和S中的反应。从界面特征的观点，认为CaS相覆盖的夹杂物具有与钢水的接触角小。因此，CaS覆盖的夹杂物倾向于保留在钢水中。根据这项研究的结果，即使没有进行Ca处理，也可能形成CaS夹杂物并降低高S含量钢的铸造性能。

著录项

  • 来源
  • 会议地点 Phoenix(US)
  • 作者

    Takanori Yoshioka; Yuta Shimamura; Andrey Karasev; Yasuhide Ohba; Pär Göran Jönsson;

  • 作者单位

    Department of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm, Sweden,Process Research Group, Basic Research Office, Research Development Center, Sanyo Special Steel Co., Ltd., Himeji, Japan;

    Process Research Group, Basic Research Office, Research Development Center, Sanyo Special Steel Co., Ltd., Himeji, Japan;

    Department of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm, Sweden;

    Process Research Group, Basic Research Office, Research Development Center, Sanyo Special Steel Co., Ltd., Himeji, Japan;

    Department of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm, Sweden;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CaS inclusion; High-S; Ca-treatment; Castability Thermodynamics; Contact angle;

    机译：CaS夹杂物；高S;钙处理；浇铸性热力学；接触角;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号