Research Article
Evaluation of Parameters Affecting Magnetic Abrasive Finishing on Concave Freeform Surface of Al Alloy via RSM Method
Table 4
Performed experiments and their values.
| Number | Rotational speed, (rpm) | Feed rate, (mm/min) | Gap, (mm) | Amount of powder, (g) | Ra (%) |
| 1 | −1 | −1 | −1 | −1 | 35.61 | 2 | −1 | −1 | −1 | 1 | 40.59 | 3 | −1 | −1 | 1 | −1 | 35.39 | 4 | −1 | −1 | 1 | 1 | 37.32 | 5 | −1 | 1 | −1 | −1 | 42.11 | 6 | −1 | 1 | −1 | 1 | 32.96 | 7 | −1 | 1 | 1 | −1 | 37.30 | 8 | −1 | 1 | 1 | 1 | 30.87 | 9 | 1 | −1 | −1 | −1 | 52.76 | 10 | 1 | −1 | −1 | 1 | 57.02 | 11 | 1 | −1 | 1 | −1 | 42.19 | 12 | 1 | −1 | 1 | 1 | 45.58 | 13 | 1 | 1 | −1 | −1 | 43.62 | 14 | 1 | 1 | −1 | 1 | 40.50 | 15 | 1 | 1 | 1 | −1 | 32.84 | 16 | 1 | 1 | 1 | 1 | 30.34 | 17 | 0 | 0 | 0 | −2 | 39.46 | 18 | 0 | 0 | 0 | 2 | 40.58 | 19 | 0 | 0 | −2 | 0 | 45.87 | 20 | 0 | 0 | 2 | 0 | 31.99 | 21 | 0 | −2 | 0 | 0 | 47.62 | 22 | 0 | 2 | 0 | 0 | 37.30 | 23 | −2 | 0 | 0 | 0 | 35.11 | 24 | 2 | 0 | 0 | 0 | 45.55 | 25 | 0 | 0 | 0 | 0 | 40.56 | 26 | 0 | 0 | 0 | 0 | 46.06 | 27 | 0 | 0 | 0 | 0 | 43.48 | 28 | 0 | 0 | 0 | 0 | 41.03 | 29 | 0 | 0 | 0 | 0 | 40.27 | 30 | 0 | 0 | 0 | 0 | 41.57 | 31 | 0 | 0 | 0 | 0 | 38.07 |
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