The Electromagnetic Induction Phenomena in Friction Contact Area of Pin and Disk under DC Magnetic Field

In order to study the influence of DC magnetic field on the friction and wear properties of the pin and disk, the simplified 2D asperities contact by finite element models in static and transient magnetic field were built according to the pin-on-disk friction tester structure and the actual contact condition of the pin and disk during the friction process in the magnetic field, and the electromagnetic induction phenomena in the friction contact region of pin and disk were analyzed. The following conclusions are drawn: the distribution of magnetic induction B was uneven, the magnetic induction B in the vicinity of the contact region of asperities was large, during the friction test, the large induction current and high frequency dynamic magnetizing were observed in the asperities contact area of the wear track and the debris. These phenomena promoted the oxidation of the worn surfaces of pin and disk and the debris.