Abstract
By studying the geometrical features and the mechanical characters of the profiles during the roller leveling process and combining the basic elastic-plastic theories, a mechanical model is established which is suitable for analyzing elastic-plastic bending of the profile during roller leveling process. Using this model, the straightening effects have been analyzed under different roller leveling process schemes for the profiles which have typical initial curvatures. The analysis of roller leveling process confirms that the curvature ranges of the profiles can't converged infinitely under any process scheme because of the hereditary effects of residual stress, and the large deformation straightening process scheme has better profile convergence than the small one. Further analysis shows that the residual stress of specific section after straightening process with large deformation straightening process is lower than that with small one, and a diminishing bending process scheme is beneficial to the control of residual stress.
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