Aiming at the problem of unqualified batch elongation of 560 MPa level P560L automobile frame steel, this paper analyzes the reasons for the unqualified elongation by means of metallographic analysis, and points out the fluctuation of coiling temperature […]

The 65Mn steel coil was fractured during peeling before cold rolling. The cause of fracture was analyzed by chemical composition analysis, metallographic examination, scanning electron microscope and energy spectrum analysis. […]