| 试件组别 | 试件编号 | 粗糙度Ra/μm |
| 第一组 | 1 | 0.395 |
| 2 | 0.421 | |
| 3 | 0.412 | |
| 第二组 | 4 | 0.390 |
| 5 | 0.402 | |
| 6 | 0.386 | |
| 第三组 | 7 | 0.395 |
| 8 | 0.423 | |
| 9 | 0.411 | |
| 第四组 | 10 | 0.421 |
| 11 | 0.396 | |
| 12 | 0.405 | |
| 第五组 | 13 | 0.429 |
| 14 | 0.412 | |
| 15 | 0.410 |