Research On Deformation Process And Force And Energy Parameters Of The Stretch-bending Straightening Machine

Flatness is one of the most important factors when evaluating the quality of cold rolled strip. It is very important to control and improve the flatness of strip to meet the continuous increasing demand for the good quality. The stretch and bending technology is one of the important methods to eliminate shape defects and improve the quality of strip. Because the course of stretch and bending referred many questions of stretch, bending and elasticity resume and so on, the distortion is extremely complicated, how to describe this distortion process exactly and quantificational become the key. So the research of this paper has very important significance of academic and practical.This topic originates from the participation Baoshan Steel Corporation Stretch-bending straightening machine of corrosion resistant plate’s production line. Considering the finishing equipment of strip steel---Stretch-bending Straightening Machine has no system design theory and depending on import seriously, conbining the large of average tension at the area of production practices, separately in the ideal elastic-plastic plane strain and the linear strengthening elastic-plastic plane strain supposition condition, considered the influence of random initial deficiency of strip(initial remaining stress), detailed analysis of the deformation in Stretch-bending Straightening. Has worked out the midst tier displacement quantity and the elongation formula of the different pattern of stress distribution and has analyzed its boundary condition of stress distribution. Has extracted the boundary condition which the strip overall plasticity extends. Duplicate has carried on the discussion to the strip tension levelling process elongation and the tensility and the curving curvature relations as well as the curving curvature and the curving resume. As the average tension in Stretch-bending Straightening area to factor, calculating the Force and Energy Parameters of the Stretch and bending.In this paper, quantitative analysis of arbitrary initial deficiency was realized.Through the detailed analysis of the deformation in Stretch-bending Straightening, propose to a precise method of average tension in Stretch-bending Straightening area and the Force and Energy Parameters of the Stretch-bending Straightening Machine. The research of this paper provides theoretical basis on design of new equipment and old equipment modification mentioned and lays the theoretical foundation for future work.