森德威二十辊轧机液压压下故障原因分析  

Analysis on the causes of the hydraulic pressing failure of sundwig 20-high rolling mill

作　　者：周志强[1] 徐利璞[2] 史鸿剑 陈铭滔 楼雄军 ZHOU Zhi-qiang;XU Li-pu;SHI Hong-jian;CHEN Ming-tao;LOU Xiong-jun(Ningbo Baoxin Stainless Steel Co.,Ltd.,Ningbo 710018,China;China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an 710018,China)

机构地区：[1]宁波宝新不锈钢有限公司,浙江宁波315800 [2]中国重型机械研究院股份公司,陕西西安710018

出　　处：《重型机械》2022年第1期96-100,共5页Heavy Machinery

摘　　要：针对森德威四立柱式二十辊轧机出现对角位置压下油缸轧制力偏差超过阈值导致报警停机的故障,查找原因并分析了该轧机压下系统的控制过程。统计分析多次同类故障现象,判断故障原因为磁尺信号丢失。进一步通过监测伺服阀控制电流,验证了操作侧左压下油缸位置检测信号存在问题。采取电缆屏蔽层改为两端接地,并与动力电缆分开铺设等措施彻底解决了该故障。In view of the failure of alarm shutdown caused by the rolling force deviation of hydro-cylinders at the diagonal position exceeding the threshold in Sundwig four-column 20-high rolling mill,the control process of the hydraulic press-down system for the mill is analyzed.Through the analysis of multiple similar fault phenomena,it is found that the fault cause is the loss of magnetic measuring ruler signal.Further,by monitoring the control current of the servo valve,it was verified that the cause is a problem with the position detection signal of the left pressure cylinder on the operating side.The fault was completely solved by adopting measures such as changing the cable shielding layer to grounding at both ends and laying it separately from the power cable.

关 键 词：森德威二十辊轧机 轧制力偏差 液压压下 故障诊断 磁尺 

分 类 号：TG333.7[金属学及工艺—金属压力加工]