鞍钢1200mm 四辊可逆式冷轧机是苏联五十年代制造的设备,无快抬辊缝装置,轧钢穿带或过焊缝,采用抬压下螺丝的方法拉开辊缝。由轧钢时的辊缝抬到穿带需要的20～40mm 辊缝并在穿带后16再恢复到轧钢辊缝,一次需4～6min,影响作业率。原更换工作辊采用套筒式方法,换一次辊需25～40min,不但影响作业率,而且劳动强度大, Ansteel 1200mm four-roll reversing cold mill is a Soviet-made equipment made in the fifties, no fast lift roll gap device, rolling wear or over the weld seam, using the method of lifting the screw down the roll gap. It is required to take 20 ~ 40mm roll gap when it is rolled by the roll gap at the time of rolling and then resume to roll gap after it is put on. It takes 4 ~ 6min at a time to affect the operation rate. The original replacement work roll sleeve method, for a roll 25 ~ 40min, not only affect the operating rate, and labor-intensive,