PRODUCTION ON DULL ROLL FOR ROLLING

摘要

PURPOSE:To obtain a dull roll for rolling remarkably improved in high image clarity after coating by applying Cr plating to the surface of a steel sheet. CONSTITUTION:In the working method for a roll for rolling, where high density energy irradiation is applied in a manner to scan the surface of a work roll for rolling to form fine ruggedness in numerous number in the roll surface and then the roll worked as mentioned above is immersed into a chromic acid solution to undergo chromium plating treatment, the softened part at the surface layer of the fine projecting part formed by high density energy irradiation is previously removed prior to the application of chromium plating treatment to the roll surface and then the roll is immersed into a chromic acid solution to undergo chromium plating treatment.