Improvement of Straightening Quality and Plastic Deformation Requirements of Straightening Machine

In the process of cooling and shearing, the plastic deformation or uneven heating and cooling of the straightening machine will directly lead to its stacking and transportation, so the materials straightened by the straightening machine will inevitably have different degrees. Bend or squiggly.

The residual stress generated in the straightening machine in the process of use, before it becomes a qualified product, it needs to be straightened with its equipment, so that the shape of the steel plate can be corrected and its residual stress can be eliminated, which is a very complicated work. .

The straightening machine can have different reductions and straightening forces for steel plates of different thicknesses and straightening rollers during the operation. The steel plate will produce a certain elastic-plastic deformation.

Under the action of the inner side of the steel plate, its elastic recovery and deformation will occur. The steel plate will reach a new balance until the internal force reaches a new balance, so that the required straightening effect can be obtained. The essence of the straightening machine is the elastic-plastic deformation process. For thin steel plates, generally Straightening is done using a multi-roll straightener.

The relative residual curvature Csi of the leveler after repeated bending and rebounding of the steel plate is zero, and the reverse bending rate Cpi of the equipment is equal to the rebound curvature Cyi after the reverse bending. , the residual curvature will be the original curvature of the next bending.

In order to further improve the straightening quality of the steel plate by its straightening machine, different schemes are adjusted for the steel plates with different defects or thicknesses. will disappear completely.