Metal plate shearing edge rolling strengthening method and plate-shaped part manufactured through same

Abstract

The invention relates to a metal plate shearing edge rolling strengthening method and a plate-shaped part manufactured through the same. The method comprises the steps that a rolling wheel is installed on rolling equipment, the rolling wheel is driven to move to make contact with a shearing edge of a metal plate, and the rolling wheel is enabled to keep thrust F in the moving direction of the rolling wheel; and the metal plate is driven to move close to the rolling wheel in the direction perpendicular to the thrust F, meanwhile, the rolling wheel rolls the edge of the shearing edge to form a chamfer, and the included angle between the rolling face of the rolling wheel and the plate face of the metal plate ranges from 30 degrees to 45 degrees. According to the metal plate shearing edge rolling strengthening method and the plate-shaped part manufactured through the same, burrs on the edge of the shearing edge can be removed, the shearing edge can be thinned in the thickness direction, residual pressure stress is formed on the whole shearing edge, and therefore the fatigue strength of the shearing edge of the plate-shaped part is greatly improved.

Description

technical field [0001] The invention relates to the field of mechanical engineering, in particular to a metal plate shearing edge rolling strengthening method and a plate-shaped part produced therefrom. Background technique [0002] Shear edge cracking of high-strength steel plates can occur in two situations. First, in the stamping process, the so-called steel plate flange elongation or hole expansion rate detection is to reflect the cracking tendency of the shear edge in the stamping process; Cutting edge cracking can also occur during the service of the part, which is generally a fatigue fracture mode at this time. [0003] Under service conditions, the fatigue life or fatigue strength of stamping parts originating from the shearing edge will be significantly lower than that of the smooth edge, which is related to the microscopic morphology and stress state of the shearing edge burr and shearing edge tear zone, and is also related to the material Generally, the higher t...

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Problems solved by technology

[0006] Embodiments of the present invention provide a metal plate rolling strengthening method and the plate-shaped part produced therefrom, so as to solve the problem in the related art that cracks cannot be prevented from originating from the tear zone of the shearing edge

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