- finish 5-10 EP Ra < 0.05 µm Ra < 0.05 µm Rockwell Rockwell Rockwell - hardness hardness C hardness C hardness C 64-66 58-66 58-66 Disk, Disk, Ring Ring/Disk: stationary stationary - speed 525 rpm - size 49.2 mm 10 mm 10 mm AISO AISO chromium chromium alloy steel, alloy steel, - material SAE 8720 annealed. annealed. Turned Turned lapped and lapped and polished. polished. 0.04-0.15 - finish Ra < 0.02 µm Ra < 0.02 µm µm Rockwell Vickers “HV Vickers “HV - hardness hardness C 30”: 190-210 30”: 190-210 58-62 0.1 m/s 0.1 m/s 1.3 m/s - velocity average, average, constant reciprocating reciprocating fuel is Fuel aerated contact contact contact surface not surface is surface is Contact submerged submerged submerged in fuel 143-772 µm 360 - 600 Range of g @ 25°C, µm @ 60°C precision data
- finish 5-10 EP Ra < 0.05 µm Ra < 0.05 µm - hardness Rockwell hardness C 64-66 Rockwell hardness C 58-66 Rockwell hardness C 58-66 Ring/Disk: Ring Disk, stationary Disk, stationary - speed 525 rpm - size 49.2 mm 10 mm 10 mm - material SAE 8720 AISO chromium alloy steel, annealed. Turned lapped and polished. AISO chromium alloy steel, annealed. Turned lapped and polished. - finish 0.04-0.15 µm Ra < 0.02 µm Ra < 0.02 µm - hardness Rockwell hardness C 58-62 Vickers “HV 30”: 190-210 Vickers “HV 30”: 190-210 - velocity 1.3 m/s constant 0.1 m/s average, reciprocating 0.1 m/s average, reciprocating Fuel fuel is aerated Contact contact surface not submerged in fuel contact surface is submerged contact surface is submerged Range of precision data g 143-772 µm @ 25°C, 360 - 600 µm @ 60°C
diesel_fuel_testing.docx