东北大学学报(自然科学版) ›› 2004, Vol. 25 ›› Issue (4): 360-362.DOI: -

• 论著 • 上一篇    下一篇

超快冷却条件下温度场数值模拟

彭良贵;刘相华;王国栋   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室 辽宁沈阳 110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2004-04-15 发布日期:2013-06-24
  • 通讯作者: Peng, L.-G.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50104004)·

Simulation on temperature field under ultra fast cooling

Peng, Liang-Gui (1); Liu, Xiang-Hua (1); Wang, Guo-Dong (1)   

  1. (1) Lab. of Rolling and Automat., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2004-04-15 Published:2013-06-24
  • Contact: Peng, L.-G.
  • About author:-
  • Supported by:
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摘要: 从导热微分方程数值差分解法入手,对轧件在粗轧和精轧之间进行超快冷却后的温度场进行了数值模拟·结果表明:当板坯初始温度为1200℃,经过6道次粗轧后,以3m/s的速度进入超快冷却区,当水冷换热系数为10kW/(m2·℃)时可以得到70℃/s的冷却速度;另外由于超冷后表面温度的强烈回复,故在进行精轧时,必须进行温度修正,保证轧件在精轧区开轧温度的精度·

关键词: 超快冷却, 温度场, 精轧开始温度, 水冷换热系数, 热轧带钢

Abstract: Temperature field under ultra fast cooling (UFC) is simulated by finite-difference method. The results show that when a slab which was rolled from 180 mm to 40 mm by 6 passes at an initial temperature 1200°C enters into a UFC zone standing between the roughing mill and finishing mill at 3 m/s, a water cooling rate 70°/s can be obtained if the heat-exchange coefficient is up to 10 kW/(m2·°C). At the same time, the entrance finishing temperature must be corrected because of the strong temperature recovery after UFC.

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