中南大学学报(英文版)
中南大學學報(英文版)
중남대학학보(영문판)
Journal of Central South University
2015年
12期
4608-4615
,共8页
刘志芳%罗远新%严兴春%王勇勤
劉誌芳%囉遠新%嚴興春%王勇勤
류지방%라원신%엄흥춘%왕용근
plastic ratio%leveling capacity%curvature integration%plate
Leveler is widely used to improve the quality of defective mild steel plates. Its typical ranges of the leveling capacity are constrained by three criteria, namely the maximum stroke of rollers, allowable total leveling force and motor power. In this work, an optimization model with equality and inequality constraints was built for the maximum yield stress search of each thickness of plates. The corresponding search procedure with three loops was given. The approximate range by the simplification model could be used as the initial value for the actual range search of the leveling capacity. Therefore, the search speed could be accelerated compared with a global search. The consistency of the analytical results and field data demonstrates the reliability of the proposed model and procedure. The typical ranges of the leveling capacity are expressed by several boundary curves which are helpful to judge whether the incoming plate can be leveled quickly or not. Also, these curves can be used to find the maximum yield stress for a specific thickness or the maximum thickness for a yield stress for plates.