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| Development and Application of Baosteel On-Line Secondary Cooling Control Model |
| ZHANG Qun-liang |
| Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China |
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Abstract For the problem of secondary cooling water in continuous casting production, the mathematical model of solidification and heat transfer for casting slab was established. By real-time simulating slab temperature and controlling water with PID technology, an on-line secondary cooling control model was developed. According to changes of casting steel grades, slab sizes and process parameters, the model can adjust and set control water flow of all cooling zones dynamically, then control the superficial temperature nears its aim. The stability and reliability of secondary cooling control system is guaranteed by designing reasonable control system structure. On-line measuring temperature shows that the model has perfect control precision. When casting speed, oeverheat of molten steel change, model can adjust cooling water to a reasonable level rapidlly with small overshoot, which ensures temperature tracking error to be always limited to a less extent. In steady casting process, the superficial temperature can maintain at the aim. Up to now, the secondary cooling model has been applied to continuous casting machines inside and outside Baosteel, all of them achieved desired control effects.
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Received: 03 August 2011
Published: 20 March 2012
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张克强，吴国庆，吴建忠，宋雯琦. 含铌钢板坯连铸二冷目标温度及配水[J]. 连铸，2002，6: 1-3. 刘青，曹立国，王良周，张立强等. 汽车用钢大方坯连铸二冷配水数学模型[J]. 中国冶金，2006,16(2): 33-35. 李作鑫，陶传俊，高龙永，陈常义，张松龄等. 济钢参数控制法二冷自动配水模型的设计[J]. 山东冶金, 2006, 28(4): 42-44. 冯亮花，刘坤，赵连刚. 中薄板坯连铸机二冷动态控制模型的研究与开发[J]. 炼钢, 2005, 21(4): 38-41. 胡跃武，卢克斌，郭朝晖，许晞等. 连铸二冷过程的仿真研究[J]. 连铸，2003,2:12-14. 卢克斌，唐海波. 二冷过程动态分析软件的开发和应用[J]. 冶金自动化，2003， 27(1): 32-34.
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张克强，吴国庆，吴建忠，宋雯琦. 含铌钢板坯连铸二冷目标温度及配水[J]. 连铸，2002，6: 1-3. 刘青，曹立国，王良周，张立强等. 汽车用钢大方坯连铸二冷配水数学模型[J]. 中国冶金，2006,16(2): 33-35. 李作鑫，陶传俊，高龙永，陈常义，张松龄等. 济钢参数控制法二冷自动配水模型的设计[J]. 山东冶金, 2006, 28(4): 42-44. 冯亮花，刘坤，赵连刚. 中薄板坯连铸机二冷动态控制模型的研究与开发[J]. 炼钢, 2005, 21(4): 38-41. 胡跃武，卢克斌，郭朝晖，许晞等. 连铸二冷过程的仿真研究[J]. 连铸，2003,2:12-14. 卢克斌，唐海波. 二冷过程动态分析软件的开发和应用[J]. 冶金自动化，2003， 27(1): 32-34.
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2012, Vol. 47 
