东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (7): 970-972+989.DOI: -

• 论著 • 上一篇    下一篇

钢包底吹气体透气砖内温度和应力分布

李秉强;李志强;刘涛;于景坤;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 出版日期:2010-07-15 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50904016)

Study on temperature/stress distribution in porous plug for bottom-blowing ladle furnace

Li, Bing-Qiang (1); Li, Zhi-Qiang (1); Liu, Tao (1); Yu, Jing-Kun (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-07-15 Published:2013-06-20
  • Contact: Yu, J.-K.
  • About author:-
  • Supported by:
    -

RichHTML

0

PDF (PC)

754

摘要： 利用ANSYS软件,对钢包运行过程中底吹气体透气砖内的温度和应力分布进行了计算和研究.研究结果表明,透气砖内的温度随时间和位置而变化,透气砖工作面温度与钢水温度一致,其他位置的温度随时间发生变化.在15min时,透气砖内各部位的温度最高,60min时达到最低,其后又开始逐渐升高.在钢包整个运行过程中,透气砖表面附近的应力最高,且沿轴向的应力梯度较大.透气砖工作面处的应力大于80MPa,而在0.005m处则迅速下降至50MPa左右.透气砖工作面附近因热应力引起的层状剥落是造成透气砖损毁的主要原因.

关键词: 透气砖, 温度, 应力, 有限单元法

Abstract: The temperature/stress distribution in the porous plug for ladle furnace was investigated using ANSYS software. The results showed that the surface temperature of the plug is the same to the molten steel, while the temperature in the plug changes with working time, no matter where it is. Inside the plug the temperature comes up to its maximum and down to its minimum when the working time is 15 min and 60 min, respectively, then it starts to rerise gradually with increasing working time. The stress near the plug surface is highest with high axial stress gradient, i.e., higher than 80 MPa at plug surface but about 50 MPa at the depth of 0.005 m as calculated from the surface. The laminar spalling due to the thermal stress near plug surface is the basic cause of the damage to the plug.

中图分类号: