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| Optimization of Oscillation Model for Slab Continuous Casting Mould Based on Mould Friction Measurements in Plant Trial |
| WANG Xu-dong1,YAO Man1,ZHANG Li2,ZHANG Xiao-bing3,CHEN Shao-hui3 |
1. School of Material Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
2. Research Institute, Baoshan Iron and Steel Co Ltd, Shanghai 201900, China
3. Jiangsu Sha-steel Group,Zhangjiagang 215625, Jiangsu, China |
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Abstract Lubrication and friction between the mould and strand are strongly influenced by mould oscillation, and play an important role in slab quality and operating safety during continuous casting processes. Investigation of mould oscillation is therefore essential for getting a better online control of the mould processes. A feasible approach for the development and optimization of mould oscillation was put forward, which combined online measurement of mould friction, design of negative oscillating parameters and evaluation for powder consumption. Three different control models including sinusoidal and non-sinusoidal oscillation for mould oscillations were developed to investigate and evaluate the effects of oscillation on mould friction and powder lubrication. For the purpose of investigating mould friction between mould and strand, online measurement was carried out on a slab continuous caster equipped with a hydraulic oscillator. Also the comparison of the mould friction in sinusoidal and non-sinusoidal mould oscillation was made for subsequent analysis. The industrial experiment result shows that the combination of inverse control model and non-sinusoidal oscillation mode will contribute to the proper powder consumption, leading to a suitable effect of friction force on strand surface, especially for high speed continuous casting. The proposed method provides reliable basis for guiding and optimizing mould oscillation among control models, sinusoidal oscillation and non-sinusoidal oscillation.
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Received: 09 October 2011
Published: 31 January 2013
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| Fund:;National Hi-Tech Research and Development Program |
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2013, Vol. 20 
