International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Roller levelling is a technological process of metal forming, used to minimize the flatness of sheet blanks and reduce the level of residual stresses. When levelling, the workpiece is subjected to cyclic alternating bending with decreasing amplitude. The report presents an experimental testing set-up designed and used to determine the mechanical response of sheet steel blanks under different loading modes. The equipment is described and the first results are presented.

The report presents the design of a 13-roll leveler for straightening sheet blanks of complex configuration. The roll leveler is equipped with a mechanism for controlling the roll gap, which during the levelling process compensates for the elastic deformation of the housing and maintains the specified levelling conditions. The levelling process was analyzed using the finite element method (FEM) with the determination of forces acting on the rollers during levelling of sheet blanks up to 50 mm thick.