New Approach to Coil Sagging Control at ArcelorMittal Hot Strip Mills

Hot rolled coils must meet specific dimensional tolerances for downstream processes and handling. Some steel grades are prone to "coil sagging," a distortion when coils aren't perfectly round. This is mainly due to the phase transformation of austenite during cooling after hot rolling. To maintain acceptable coil shapes with minimal impact on productivity, ArcelorMittal uses various process optimization techniques, including a patented technology from its East Chicago Research Center (patent # WO 2019 193 474). This paper summarizes ArcelorMittal's knowledge and industrial experience in this area.

Authors:

Mr. Gleyson Barbosa | ArcelorMittal USA Research LLC
 

Evgueni Poliak | ArcelorMittal USA Research LLC
 

Joe Xiao | ArcelorMittal USA Research LLC
 

Henry Williams | AM/NS Calvert
 

Kenneth Norris | AM/NS Calvert
 

Ronan Jacolot | ArcelorMittal R&D Maizieres
 

Session Chairs:

Jorge Fernandez | AMI Automation
 

Nancy Hake | NLMK Indiana