Modeling of Strip Temperature in Rapid Cooling Section of Vertical Continuous Annealing Furnace
WAN Fei1,2,WANG Yong-qin1,QIN Shu-ren1
1. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China 2. Baosteel Engineering and Technologies Group Co Ltd, Shanghai 201900, China
Modeling of Strip Temperature in Rapid Cooling Section of Vertical Continuous Annealing Furnace
WAN Fei1,2,WANG Yong-qin1,QIN Shu-ren1
1. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China 2. Baosteel Engineering and Technologies Group Co Ltd, Shanghai 201900, China
ժҪ The strip temperature is affected by many factors in rapid cooling section (RCS) of the vertical continuous annealing furnace (VCAF). They can be divided into four types: the physical properties of cooling gas, the geometry characteristics of configuration of cooling equipment, the heat transfer between the strip and the cooling gas, and the conductivity of the strip. It aims to model the strip temperature in the cooling section based on the fundamental heat transfer theory and the four aspects factors. The model for transient Nusselt number is obtained by considering Reynolds number, Prandtl number and geometry characteristics of RCS. Then cooling model of the strip transient temperature is built by Nusselt number, heat transfer coefficient and heat conductivity of the strip. The results are compared with the data from production line. The comparisons indicate that the model can well predict cooling temperature of the strip. It is hoped that the proposed model can be used for design and control of the vertical continuous annealing furnace.
Abstract��The strip temperature is affected by many factors in rapid cooling section (RCS) of the vertical continuous annealing furnace (VCAF). They can be divided into four types: the physical properties of cooling gas, the geometry characteristics of configuration of cooling equipment, the heat transfer between the strip and the cooling gas, and the conductivity of the strip. It aims to model the strip temperature in the cooling section based on the fundamental heat transfer theory and the four aspects factors. The model for transient Nusselt number is obtained by considering Reynolds number, Prandtl number and geometry characteristics of RCS. Then cooling model of the strip transient temperature is built by Nusselt number, heat transfer coefficient and heat conductivity of the strip. The results are compared with the data from production line. The comparisons indicate that the model can well predict cooling temperature of the strip. It is hoped that the proposed model can be used for design and control of the vertical continuous annealing furnace.
WAN Fei,,WANG Yong-qin,QIN Shu-ren. Modeling of Strip Temperature in Rapid Cooling Section of Vertical Continuous Annealing Furnace[J]. �й������ڿ���, 2012, 19(11): 27-32.
WAN Fei,,WANG Yong-qin,QIN Shu-ren. Modeling of Strip Temperature in Rapid Cooling Section of Vertical Continuous Annealing Furnace. Chinese Journal of Iron and Steel, 2012, 19(11): 27-32.
2012, Vol. 19 
