First International Symposium on Advanced Rolling Equipment
Characteristics and Development of Next-Generation Level 2 Model as
Bingji (Benjamin) Li, Ph.D.
Metal Pass LLC
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