...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Behavior of Inclusions in Deoxidation Process of Molten Steel with in Situ Produced Mg Vapor
【24h】

Behavior of Inclusions in Deoxidation Process of Molten Steel with in Situ Produced Mg Vapor

机译：原位生成的Mg蒸气在钢水脱氧过程中夹杂物的行为

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

In the deoxidation process of molten steel with magnesium vapor produced in situ by aluminothermic reduction of magnesium oxide, the formed inclusions are usually small in size and of spherical shape. They tend not to aggregate and form cluster. The MgO content in the inclusions decreases, while the SiO_2 content increases with the progress of experiment. Larger inclusions are removed by floating up with the rising bubbles more easily and the fine inclusions tend to remain in the melt. The oxygen concentrations originated from the inclusions can be reasonably explained from the experimental analysis ones. By use of the MgO porous immersion tube, deoxidation proceeds slowly at the initial stage, but it continues until the later stage of experiment, in contrast to that using the dense Al_2O_3 immersion tube. The formed inclusion number per unit area has a larger value than that with the dense Al_2O_3 tube. The number of inclusions also increases with increasing the initial oxygen concentration and dividing pellets charging into several portions. When the carrier gas flow rate is large, the number of inclusions tends to increase at the later stage of experiment due to the strong involvement of inclusions from the melt surface into the melt. In the present deoxidation process, it is considered that the rapid removal of larger inclusions by rising bubbles is beneficial to produce high cleanness steel, while the remaining fine inclusions is helpful for the grain refinement of steel during the solidification and phase transformation process.
机译：在钢水与通过铝热还原氧化镁原位产生的镁蒸气的脱氧过程中，形成的夹杂物通常尺寸小且呈球形。它们往往不会聚集并形成集群。随着实验的进行，夹杂物中的MgO含量降低，而SiO_2含量增加。较大的夹杂物更容易通过上升的气泡漂浮而除去，细小夹杂物倾向于保留在熔体中。从夹杂物中产生的氧浓度可以从实验分析中合理地解释。与使用致密的Al_2O_3浸入管相比，通过使用MgO多孔浸入管，脱氧在初始阶段缓慢进行，但一直持续到实验的后期。每单位面积形成的夹杂物数量具有比密集的Al_2O_3管更大的值。夹杂物的数量也随着初始氧气浓度的增加以及将粒料分成几部分而增加。当载气流量大时，由于夹杂物从熔体表面到熔体的强烈参与，夹杂物的数量在实验的后期趋于增加。在当前的脱氧过程中，认为通过上升的气泡快速去除较大的夹杂物有利于生产高清洁度钢，而其余的细小夹杂物有助于在凝固和相变过程中细化钢。

著录项

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