1580 mm热连轧F2轧机集油盒连接销失效分析

FAILURE ANALYSIS OF OIL COLLECTING BOX CONNECTING PIN IN 1580MM HOT ROLLING MILL

针对某钢厂1580 mm热连轧F2轧机在轧制薄板时弧形齿接轴的集油盒连接销多次失效问题,对F2轧机传动系统及辊系进行了多次现场测试,并对测试信号进行时域和频域分析。建立了包括主传动系统、辊系、机架等轧机整体的三维有限元模型,针对其振动固有频率进行仿真计算,计算结果与测试结果基本一致,可确定轧机机组发生了共振,且优势频率对应的最大振动位移均出现在齿轮箱侧集油盒处,为进一步分析轧机振动特性及原因提供有效参考。

In order to solve the problem of multiple failures of the oil collecting box connecting pin of the arc gear toothed when the 1580 mm hot strip mill F2 rolling mill was rolling the thin plate,several field tests were performed on the F2 rolling mill drive system and roll system,and the test signal was processed in time domain and frequency domain.The three-dimensional finite element model of rolling mill was built to simulate the natural frequency of the vibration,including main drive system,roller system and frame.The calculated results are basically consistent with the test results.It can be determined that the mill unit has a resonance and the dominant frequency corresponds to the maximum vibration displacements are found at the side of the gear box,providing an effective reference for further analysis of the mill vibration characteristics and causes.