METHOD FOR ELIMINATING ROLL FLAW IN ROLLING PROCESS

摘要

PURPOSE:To improve the operating efficiency of a rolling line by discriminating a roll flaw and its generating part based on the surface flaw of a material to be rolled and grinding the roll flaw by a roll grinder provided to the inside of a stand. CONSTITUTION:A surface flaw detecting device 15 for detecting flaws in both- side surfaces of a material to be rolled is disposed between a coiler 13 and a final stand F5. A roll grinder 3 is attached so as to be reciprocated in the axial direction of a work roll 1 to a guide shat parallel to the roll 1. A flaw detecting device 15 discriminates the surface condition by comparing it with an image signal of roll flaw obtained previously by experiments, as well as discriminates the position of flaw by computing a pitch of roll flaws. Next, a roll grinder 3 of a flaw-generating stand is moved to the corresponding position in comformity with an output signal of the device 15 to grind the roll 1.