An On-line Finite Element Temperature Field Model for Plate Ultra Fast Cooling Process

作     者：Xiao-lin CHEN Guo-dong WANG Yong TIAN Bing-xing WANG Guo YUAN Zhao-dong WANG 

作者机构：State Key Laboratory of Rolling and AutomationNortheastern University 

出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)

年 卷 期：2014年第21卷第5期

页      面：481-487页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 080201[工学-机械制造及其自动化] 

基　　金：Item Sponsored by National Key Technologies Research and Development Program of China(2012BAF04B01) 

主　　题：laminar cooling ultra fast cooling temperature field finite element variable bandwidth storage meth-od Cholesky decomposition method 

摘      要：Taking the element specific-heat interpolation function into account, a one-dimensional （l-D） finite ele- ment temperature field model for the on-line control of the ultra fast cooling process was developed based on the heat transfer theory. This 1-D model was successfully implemented in one 4 300 mm plate production line. To improve the calculation accuracy of this model, the temperature-dependent material properties inside an element were considered during the modeling process. Furthermore, in order to satisfy the real-time requirements of the on-line model, the variable bandwidth storage method and the Cholesky decomposition method were used in the programming to storage the data and carry out the numerical solution. The on-line application of the proposed model indicated that the devia- tion between the calculated cooling stop temperature and the measured one was less than ± 15 ℃.