东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (10): 923-926.DOI: -

• 论著 • 上一篇    下一篇

中厚板控制冷却数学模型

蔡晓辉;张殿华;谢丰广;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;沈阳市外国专家局;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:2003-10-15 发布日期:2013-06-24
  • 通讯作者: Cai, X.-H.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(59995440);;教育部高等学校博士学科专项科研基金资助项目(97014515)·

Mathematical model for cooling control of medium plates

Cai, Xiao-Hui (1); Zhang, Dian-Hua (1); Xie, Feng-Guang (2); Wang, Guo-Dong (1)   

  1. (1) Lab. of Rolling and Automat., Northeastern Univ., Shenyang 110004, China; (2) Admin. of Foreign Expert Affairs, Shenyang 110013, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2003-10-15 Published:2013-06-24
  • Contact: Cai, X.-H.
  • About author:-
  • Supported by:
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摘要： 介绍了中厚板控制冷却过程中所用的数学模型,包括差分模型、空冷和水冷换热系数模型、比热和热传导率模型,并采用有限差分法模拟计算了钢板在冷却过程中厚度、宽度方向上的温度场分布,以及间歇冷却对控制冷却的影响·从模拟结果可以看出,返红时间、厚度上温度梯度随钢板厚度增加而增加;间歇冷却时钢板内部温度呈均匀下降,表面不断冷却与返红过程·在线应用证明该套数学模型计算精度较高,可以满足现场实际生产的要求·

关键词: 控制冷却, 数学模型, 中厚板, 温度场, 间歇冷却

Abstract: The model showed by the topic was introduced including a difference expression and some models for heat transfer coefficient air/water cooling specific heat and heat conductivity. Applying the finite difference method to the simulation of cooling process, the temperature field along the thickness/width of plate was calculated, as well as the effect of intermittent cooling on the result of cooling control. Simulating results show that the re-reddening time and temperature gradient along thickness increase with plate thickness and the inner temperature of plate decrease evenly if cooling intermittently, with plate surface continuously cooled and re-reddended. The on-line applications revealed that the model can get high accuracy in calculation to meet actual requirements in production.

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