Table 3 Lapping conditions kept during experiments for all tests T1-T30.
Lapping disc | |
|---|---|
Outer tool diameter | do = 380 mm |
Inner tool diameter | di = 90 mm |
Material of the working elements | PA2200 |
Lapping parameters | |
Rotational speed of a lapping plate | nt = 120 min−1 |
Rotational speed of a leading ring | nw = 60 min−1 |
Unit pressure | p = 12 kPa |
Duration of a single test | tt = 4 min |
Abrasive suspension | |
Abrasive paste | SD 28/20 |
Grains in abrasive paste | Diamond D28 |
Volumetric grain concentration in abrasive paste | 20% |
Volume of abrasive paste | 4 ml |
Loose abrasive grains | Diamond D107 |
Volume (mass) of loose grains | 2.5 ml (4,4 g) |
Lubricant | Machining oil |
Lubricant flow rate | Qlub = 0.5 ml/min |
Workpiece | |
Material | Al2O3 ceramic |
Vickers hardness HV10 | 1100 MPa |
Diameter | dw = 34 mm |
Initial height | hw0 = 30 mm |
