Wear resistance of runner washer made of Oxafen OPM-94
Comparative tests of submersible pump stage runner washer manufactured from a pilot plate of Oxafen OPM-94 were carried out at a friction laboratory. Abrasion wear resistance tests of washer material were carried out on a testing rig imitating the operation of a pump stage thrust bearing. The experiments used ~ 40 μm mean particle size quartz sand as the abrasive material. The abrasive material was fed in Litol-24 lithium grease. Litol contained 5% quartz sand by mass. Abrasive-laden grease was fed continuously at a rate of 5 cm³/h. Axial force acting on bearing washer (dout.= 44 mm, din = 35 mm) matched the maximum possible load in operation conditions, Nос = 6.40 kg (Pос = 1.58 kg/cm²). Washer rotation speed n = 2900 RPM. Mean sliding velocity v = 5.9 m/s.
Test duration: two washers for 360 minutes each, one washer for 29 hours. Material of busing imitating the distributor shoulder: U8 steel. Overall dimensions of bushing: dout.= 42 mm, din= 36 mm, h = 23 mm. Test results are listed in Tables 4, 5 and 6.
Note: mean wear rate was determined by dividing total wear of washer (400 μm) and bushing (170 μm) by total test duration (29 h).