Abstract:In this paper, two processes were used to produce 0.15mm thick C5210 alloy strip. The metallographic structure and mechanical properties of the strip prepared under the two processes were tested, and the defects of the strip and the surface morphology after bending and stamping were observed. Adding electromagnetic casting technology, the process of "cold rolling after homogenizing annealing" was transformed to "homogenization after homogenization", and reducing the annealing temperature was performed to improve the process of producing the strip. Therefore, the defects such as looseness, peeling and surface cracks of the strip were significantly reduced, the grain size of the alloy strip was smaller, the mechanical properties were higher, and the surface cracks after bending and stamping are solved.