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 |