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First International Symposium on Advanced Rolling Equipment Technologies
(ISARET2010)
 

Characteristics and Development of Next-Generation Level 2 Model as Metallurgical System


Bingji (Benjamin) Li, Ph.D.
www.metalpass.com/bli
Metal Pass LLC
www.metalpass.com
Pittsburgh, PA, USA

 

Wide application of metallurgical processes (e.g. controlled rolling) in today’s steel rolling calls for Level 2 model to fully consider metallurgical principles. Various metallurgical issues negatively affect the current Level 2 model. The considerable retained strains due to incomplete recrystallization, and the metallurgical phenomena during hold and two-phase region rolling, etc., cause significant model errors which cannot be removed by adaptive learning.

The next-generation Level 2 model should include a hybrid system by combining a full-range of metallurgical models with intelligent learning such as neural network, together with an expert system to guide the learning. The new model would also improve the pass schedule in controlled rolling principle. The revealed metallurgical issues, the general concepts of the next-generation Level 2 system, and the related metallurgical models in rolling, reheating and accelerated-cooling will be introduced.


 


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