Longitudinal profiled plate straightening process based on curvature integral method

Considering the variable cross section thickness of longitudinal profiled plate and the dynamic reductions of straightening rolls, an analytical model combining curvature integral method with linear decreasing straightening scheme was proposed to investigate the longitudinal profiled plate straightening process. Moreover, the calculation flow and solution algorithm of longitudinal profiled plate straightening process were presented. To verify the proposed model, calculated straightening forces were compared with the measured values, and very good agreements were achieved. Then, the reduction, contact angle, reverse bending curvature, residual curvature, straightening force and straightening moment of longitudinal profiled plate in the straightening process were calculated and analyzed, and the calculated results show that the curvature integral method can be used to reveal the mechanism of longitudinal profiled plate straightening.