轧机锁紧油缸泄漏原因分析及系统改进

Cause Analysis of Lock Oil Cylinder's Leakage on Mill and the Improving Method

济钢第一小型轧钢厂轧机液压换槽系统因工作压力增高,蓄能器压力油长期作用于锁紧缸,引起密封圈击穿、泄漏和机架不稳。通过增设定值减压阀控制油压,改进锁紧油缸结构,解决了锁紧油缸的泄漏问题,保证了轧制线的稳定,轧机作业率由85%提高到87%。

Because of the high pressure of the hydraulic system of stand transversing and accumulator's pressure in locked oil cylinder in No1 Small Section Rolling Plant of Jinan Iron and Steel Group,joint rings were staved, leaking oil and causing the mills unstabilized By adding pressure reducer to control oil pressure and improving the structure of the locked oil cylinder, leakage was avoided and the stability of stand was improved, the mill's production rate was increased from 85% to 87%