Abstract:Strip surface vibration marks often appear on the surface of high strength steel produced by a cold rolling skin pass mill. After several rounds of industrial vibration tests of the roll system and drive system, we conducted time and frequency domain analysis of the vibration signal, calculated the gear-mesh frequency of the drive system, and analyzed the drive system to be the origin of vibration of the rolls system. Then, we set up the three-dimensional finite element model of a six-high skin pass mill and calculated the natural frequency. After comparison with the gear-mesh frequency, we concluded that the meshing impact of the gear box created the forced vibration of the skin pass mill. Finally, we carried out a rolling strategy with rolling speed that avoided the system’s natural frequency vibration zone in industrial production and reduced the strip surface vibration mark of high strength steel by 90%.