冷连轧机极薄规格高速生产工艺  

High Speed Production Process of Ultra-Thin Gauge for Tandem Co ld Mill

作　　者：关军 GUAN Jun(Shougang Jingtang United Iron&Steel Co.,Ltd,Tangshan 063299,China)

机构地区：[1]首钢京唐钢铁联合有限责任公司,河北唐山063299

出　　处：《工业技术与职业教育》2021年第3期1-4,共4页Industrial Technology and Vocational Education

摘　　要：针对某冷连轧机在生产极薄规格板材过程中出现的轧机振动问题,对比分析了不同轧制规格和轧制工艺下轧机振动的临界速度,明确了提高失稳临界速度的途径,提出了一种新的轧制压下负荷分配原则——轧制稳定性原则,为了保证轧机第4#、5#机架稳定轧制而不发生振动,第4#、5#机架的压下负荷分配必须保持在一定范围,这个范围可以通过系统失稳临界速度的计算得到。针对极薄规格板材高速振动问题,通过将第4#机架压下率降至32%,第5#机架压下率增至25%,并降低第4#机架轧制速度后,冷连轧轧机镀锡板轧制速度从1225 m/min时轧机发生振动提高到1799 m/min时轧机无振动。A new rolling reduction load distribution principle,rolling stability principle,is proposed.In order to ensure the stable rolling of the 4#and 5#stands without vibration,the reduction load distribution of the 4#and 5#stands must be maintained in a certain range,which can be obtained by calculating the critical speed of system instability.Aiming at the problem of high-speed vibration of sheet metal with very thin gauge,by reducing the reduction rate of stand 4 to 32%,increasing the reduction rate of stand 5 to 25%,and reducing the rolling speed of stand 4,the rolling speed of tinplate in tandem cold rolling mill increases from 1225 m/min to 1799 m/min without vibration.

关 键 词：压下率 轧机振动 极薄板 临界速度 

分 类 号：F407.3[经济管理—产业经济]