Advancement of Roll-Gap Control to Curb the Camber in Heavy-Plate Rolling Mills

The quality of steelwork products depends on the geometric precision flat products. Heavy-plate rolling mills produce plates for large-diameter pipes and use in shipbuilding, mechanical engineering, construction. This is why requirements are so stringent. Today’s Mills 5000 up to 5 m width; operation these units shows ‘camber’ defects axial shift roll at stand exit point. induces greater loss metal due edge trimming involves a higher risk accidents. These mainly occur asymmetry gap, which turn caused by their misalignment rolling. As result, feed varies gauge, strip moves unevenly. paper’s key contribution consists theoretical experimental substantiation development set control methods intended address roll-gap asymmetry. effectively compensate resulting from “inherited” wedge, preexists before enters stand. They also “ongoing” that difference force opposite side during comprehensive approach addressing camber displacement has not been found other sources. paper presents RAC controller connection diagram ensures gap even across feed. notes shortcomings design configuration how it could be improved. authors have developed predictive adjustment method compensates deviations gauge inter-passage pauses. showcases feasibility proportional-derivative RAC. tested mathematical modeling experimentally. further oscillograms sampled Mill after implementing solutions. Tests confirm far better screw-down mechanisms sides reduces variation thus curbs defect. geometry improves, less lost trimming. discusses interacts with automatic system. conclusion systems do interfere each other. proceeded pilot testing.