无头轧制精轧入口温度补偿控制策略应用分析  

Application analysis of finisher entry temperature compensation control strategy in endless rolling

作　　者：王瑞丰 WANG Ruifeng(Jingtang Operation Department,Beijing Shougang Automation Information Technology Co.,Ltd.,Tangshan 063200,China)

机构地区：[1]北京首钢自动化信息技术有限公司京唐运行事业部,河北唐山063200

出　　处：《冶金自动化》2021年第1期68-72,83,共6页Metallurgical Industry Automation

摘　　要：无头轧制铸机铸坯速度慢、板坯温降大,导致板坯在精轧机入口温度(FM entry temperature,简称FET)低。首钢京唐二期多模式连铸连轧(multi-mode continuous casting and rolling,简称MCCR)产线通过增加感应加热器(induction heater,简称IH)来提高板坯FET。精轧入口温度补偿(finisher entry temperature compensation,简称FETC)是IH在无头轧制模式下升温控制的模型。IH升温的闭环控制包括前馈控制和反馈控制。针对无头轧制模式下IH的两种反馈控制策略对带钢FET、终轧温度(FM delivery temperature,简称FDT)以及IH输出功率、设备稳定性的影响进行了分析,可以看出,IH这种长反馈控制策略使IH功率输出更稳定,提高了带钢FDT的稳定性。The casting speed of the endless rolling casting machine is slow,and the temperature drop of the slab is large,resulting in a low slab temperature at the entrance of the finishing mill( FET).Shougang Jingtang Phase Ⅱ multi-mode continuous casting and rolling( MCCR) production line increases the FET of the slab by adding induction heaters( IH). Finisher entry temperature compensation( FETC) is the key to IH’s control logic in endless rolling mode. The closed-loop control of IH temperature rise includes feedforward control and feedback control. The effects of two feedback control strategies of IH in endless rolling mode on the strip FET,final rolling temperature( FDT),IH output power,and equipment stability were analyzed. It can be seen that the IH long feedback control strategy can make the IH power output more stable and improve the stability of the strip steel FDT.

关 键 词：无头轧制 精轧入口温度补偿 感应加热器 控制策略 

分 类 号：TG333[金属学及工艺—金属压力加工]