东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (10): 1445-1448.DOI: -

• 论著 • 上一篇    下一篇

连铸方坯热应力模型的研究及应用

马交成;祖陵宇;刘文红;谢植;   

  1. 东北大学机械工程与自动化学院;东北大学信息科学与工程学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-10-15 发布日期:2013-06-22
  • 通讯作者: Ma, J.-C.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007AA04Z194)

Research and application on thermal stress model of billet continuous casting

Ma, Jiao-Cheng (1); Zu, Ling-Yu (2); Liu, Wen-Hong (2); Xie, Zhi (2)   

  1. (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China; (2) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-10-15 Published:2013-06-22
  • Contact: Ma, J.-C.
  • About author:-
  • Supported by:
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摘要： 为了减少不恰当连铸二冷操作导致的铸坯内部裂纹等缺陷,在凝固传热模型验证的基础上建立了方坯二维弹塑性应力模型.通过此模型计算了水量优化前后铸坯应力分布情况,获得了铸坯在二冷区的应力分布规律.分析了影响连铸坯内部裂纹的因素,提出预防热裂纹产生的措施,为研究二冷对铸坯质量的影响提供了理论基础,并为优化二冷水量改善铸坯质量提供了依据.

关键词: 连铸, 传热, 凝固, 应力模型, 有限元, 内部裂纹

Abstract: To reduce the internal cracks and defects of billets, which were caused by the inappropriate secondary cooling operation during continuous casting, a 2-D thermal elastic-plastic stress model of billet was developed via the verification of the heat transfer model in solidification process. Then, the billet stress distribution was calculated before and after the optimization of water flowrate required for secondary cooling to find out the rules of billet stress distribution in the secondary cooling zone. Analyzing the influencing factors on the cracks in billet, some measures were proposed to prevent the billet from thermal cracks, thus providing theoretically foundation to study the effect of secondary cooling on the quality of billet and the way to optimize the water flowrate required for secondary cooling so as to improve the strand quality during continuous casting.

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