EXPERIMENTAL STUDY ON FRICTION AND WEAR PERFORMANCE OF 45 STEEL AND GCr15 STEEL UNDER THE CONDITION OF PERMANENT MAGNETIC FIELD.

Based on HSR-2M high-velocity reciprocating friction and wear tester, 45 steel and GCr15 steel friction pair performance test was carried out. Inside the permanent magnet magnetic field working environment, the effects of sliding velocity, normal force and other parameters on the friction coefficient and wear rate were studied. By analyzing wear scar morphology, the wear mechanism was studied and the results with and without magnetic field were contrastively analyzed. The results show that the magnetic field can reduce the friction coefficient and wear rate to some extent. With the sliding velocity increase, the friction coefficient and wear rate was reduced. With the normal force increase, the friction coefficient was reduced, but the wear rate was increased. Magnetic field can improve the friction and wear performance of 45 steel and GCr15 steel friction pairs. Without any magnetic field, the wear was typical abrasive wear, worn surface was obvious furrows, and the wear system shows greater wear rate and friction coefficient. [ABSTRACT FROM AUTHOR]