Research Article
Wear Performance of Bionic Dimpled-Shape Pistons of Mud Pump
Table 1
Influence of different dimple diameters on piston service life.
| Piston number | Diameter of dimple at lip, D (mm) | Spacing, L (mm) | Central included angle, α (°) | Diameter of dimple at root, D′ (mm) | Average service life of piston (h) | Increased service life (%) |
| L-Standard | 0 | 0 | 0 | 0 | 54.67 | — | L-D1 | 1.5 | 5.5 | 12 | 0 | 57.17 | 4.57 | L-D2 | 3 | 5.5 | 12 | 0 | 76.83 | 40.53 | L-D3 | 4.5 | 5.5 | 12 | 0 | 87.83 | 60.65 | L-D4 | 3 | 5.5 | 12 | 3 | 81.17 | 48.47 |
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