传统的无缝钢管连轧机为两辊式轧机，天津钢管公司168钢管厂于2003年新建世界第1套PQF三辊式无缝钢管连轧机。通过介绍先进的自动化控制技术在该钢管轧机中的应用，论述了PQF连轧管机的角度和速度同步控制技术，分析了PQF轧机中限动芯棒系统采用的位置控制和转矩匹配技术。介绍了实践应用效果，表明了该控制系统的先进可靠性和对提高生产效率和产品质量的效果。
The traditional seamless steel pipe rolling mill consists of two high stands. The first PQF mill with three high stands was built at 168 pipe mill plant of Tianjin Pipe Corporation in 2003.The advanced automation control system of PQF pipe mill is described. The synchronized control of angle and speed on PQF pipe mill is introduced. The principle of positioning control and torque balance technique adopted on this mill are also described. The effect of this control system is obvious in improvement of reliability, productivity and quality of products.
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