中板轧机AGC液压系统伺服阀运行稳定性研究
Study on the Stability of the Servo Valve in the AGC Hydraulic System of the Medium Plate Mill
中板轧机AGC压下液压缸采用MOOG公司D792 系列三级电液伺服控制阀,伺服阀与液压缸位置传感器、压力传感器采用位置和压力闭环控制。该伺服阀流量大、响应速度快,对钢板厚度控制精度高,大大的提高产品厚度控制精度。在生产过程中,伺服阀频繁出现故障,更换频率高,使用寿命低。通过采取改进措施,有效解决了伺服阀故障,并延长了伺服阀的使用寿命。
The AGC pressure-down hydraulic cylinder adopts MOOG D792 series three-stage electro-hydraulic servo control valve.The servo valve is controlled in a closed loop with position and pressure sensors for the hydraulic cylinder.The servo valve has a large flow rate,fast response speed,and high accuracy in steel plate thickness control,greatly improving the precision of thickness control in production.However,during the producing process,the servo valve frequently malfunctions and has a short service life.Through the implementation of improvement measures,the servo valve failures have been effectively addressed,and the service life of the servo valve has been extended.
李书宇;
河钢集团邯钢公司新区中板厂 056015;
AGC hydraulic system electro-hydraulic servo valve malfunction analysis
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