Analysis of the Influence of Vibration of 25CrMo4 Material on Magnetic Signal

In order to study the influence of vibration on the early failure safety detection of high-speed iron wheel, the influence of magnetic memory signal on the vibration time of high-speed train wheelset material 25CrMo4 steel was studied based on metal magnetic memory detection technology. The combination of experiment and simulation was adopted. The correspondence between vibration time and magnetic memory signal is analyzed. In the ANSYS simulation process, when the vibration frequency is 40Hz, the tangential component of the magnetic memory signal changes from -32A/m to 190.8A/m to - 62A/m~29.2A/m as the vibration time increases from 20min to 60min. The mean value is reduced from 72.3 A/m to -19.1 A/m. The normal component of the magnetic memory signal varies from -160.6A/m to 111.1A/m to -16.2A/m to 155.4A/m, and the mean increases from -33.8A/m to 56A/m. At a vibration frequency of 50 Hz, the trend of the magnetic memory signal with time is similar to that at 40 Hz. By comparing the simulated signal with the experimental signal, the consistency of the magnetic memory signal with the vibration time is verified. Establishing the correspondence between simulation and measured signals has practical reference significance for the safety detection of wheelset operation.