东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (11): 1586-1590.DOI: 10.12068/j.issn.1005-3026.2015.11.015

• 材料与冶金 • 上一篇    下一篇

电渣重熔1Mn18Cr18N护环钢补缩过程的温度变化规律

朱红春, 姜周华, 李花兵, 李可斌   

  1. (东北大学 材料与冶金学院, 辽宁 沈阳110819)
  • 收稿日期:2014-10-13 修回日期:2014-10-13 出版日期:2015-11-15 发布日期:2015-11-10
  • 通讯作者: 朱红春
  • 作者简介:朱红春(1989-),男,重庆开县人,东北大学博士研究生; 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:
    国家高技术研究重点发展计划项目(2012AA03A502); 国家自然科学基金资助项目(51304041).

Temperature Revolution During Feeding Process in ESR of 1Mn18Cr18N

ZHU Hong-chun, JIANG Zhou-hua, LI Hua-bing, LI Ke-bin   

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2014-10-13 Revised:2014-10-13 Online:2015-11-15 Published:2015-11-10
  • Contact: JIANG Zhou-hua
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摘要: 以电渣重熔准稳态过程的温度场为初始条件,采用ANSYS与CFX商业软件相结合的方法,研究分析了电渣重熔补缩过程中的温度分布,考察了无补缩操作、直线降流方式和阶梯降流方式三种条件下电渣锭热节的最终位置.结果表明:在无补缩操作条件下,电渣锭热节附近糊状区离渣-金界面的最远距离为162mm,直线降流方式距离为130mm,大阶梯降流方式距离为70mm,而小阶梯降流方式的热节位置几乎保持不变.因此,阶梯降流方式更有利于1Mn18Cr18N护环钢电渣重熔补缩工艺的顺利进行.

关键词: 电渣重熔, 1Mn18Cr18N护环钢, 补缩, 温度场, 数值模拟

Abstract: The temperature field at quasi steady state of electro slag remelting (ESR) was taken as initial condition in the simulation of temperature distribution during ESR in virtue of ANSYS and CFX. Terminal positions of hot spots in the ingot under three feeding conditions (i.e. no feeding, linear current-drop and stair-step current-drop during feeding) were investigated. The results showed that the largest distance of mushy zone around the hot spot were 162mm, 130mm and 70mm away from slag-metal interface, when no feeding, linear current-drop and rapid stair-step current-drop were carried out during ESR feeding process, respectively. The hot spot remained changeless under slow stair-step current-drop. Thus, stair-step current-drop is beneficial for feeding process during ESR of 1Mn18Cr18N.

Key words: ESR(electro slag remelting), 1Mn18Cr18N retaining ring steel, feeding, temperature field, numerical simulation

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