1 Introduction
2 Testing Process and Detection
2.1 Testing Process
Material | SiC | Al 2024-T6 |
---|---|---|
Elastic modulus (GPa) | 420 | 74.2 |
Poisson ratio | 0.14 | 0.33 |
Yield stress (MPa) | 5700 | 345.4 |
Density (kg/m3) | 3130 | 2780 |
Heat capacity (J/kg·°C) | 427 | 875 |
No. | Spindle speed (r/min) | Feeding amount (mm/min) | Grinding depth (μm) |
---|---|---|---|
T1 | 2000 | 50 | 5 |
T2 | 2000 | 50 | 20 |
T3 | 2000 | 50 | 40 |
T4 | 2000 | 50 | 80 |
T5 | 4000 | 50 | 5 |
T6 | 4000 | 50 | 20 |
T7 | 4000 | 50 | 40 |
T8 | 4000 | 50 | 80 |
T9 | 6000 | 50 | 5 |
T10 | 6000 | 50 | 20 |
T11 | 6000 | 50 | 40 |
T12 | 6000 | 50 | 80 |
T13 | 8000 | 50 | 5 |
T14 | 8000 | 50 | 20 |
T15 | 8000 | 50 | 40 |
T16 | 8000 | 50 | 80 |
T17 | 2000 | 100 | 5 |
T18 | 2000 | 100 | 20 |
T19 | 2000 | 100 | 40 |
T20 | 2000 | 100 | 80 |
T21 | 4000 | 100 | 5 |
T22 | 4000 | 100 | 20 |
T23 | 4000 | 100 | 40 |
T24 | 4000 | 100 | 80 |
T25 | 6000 | 100 | 5 |
T26 | 6000 | 100 | 20 |
T27 | 6000 | 100 | 40 |
T28 | 6000 | 100 | 80 |
T29 | 8000 | 100 | 5 |
T30 | 8000 | 100 | 20 |
T31 | 8000 | 100 | 40 |
T32 | 8000 | 100 | 80 |
2.2 Detection Method
3 Evaluation Standard
4 Results and Discussion
4.1 Experimental Results
No. | Group | Feeding amount (mm/min) | Grinding depth (μm) | Spindle speed (r/min) | F | COF | Sdr | Ra | Rp | Rv | Ssk | Sku |
---|---|---|---|---|---|---|---|---|---|---|---|---|
T1 | 1 | 50 | 5 | 2000 | 0.70 | 0.57 | 1.33 | 5.26 | 31.34 | 26.54 | −0.41 | 2.57 |
T5 | 4000 | 0.40 | 0.5 | 1.09 | 2.51 | 21.27 | 21.03 | −0.58 | 4.13 | |||
T9 | 6000 | 0.80 | 0.29 | 1.06 | 2.08 | 14.39 | 18.59 | −0.11 | 3.68 | |||
T13 | 8000 | 0.65 | 0.71 | 1.02 | 2.56 | 18.64 | 22.08 | −0.35 | 4.17 | |||
T2 | 2 | 20 | 2000 | 1.00 | 0.51 | 1.80 | 3.50 | 31.76 | 24.85 | −0.34 | 4.27 | |
T6 | 4000 | 1.00 | 0.65 | 1.46 | 3.30 | 22.83 | 23.90 | −0.75 | 4.16 | |||
T10 | 6000 | 2.10 | 0.30 | 1.02 | 2.59 | 16.29 | 18.55 | −0.69 | 4.05 | |||
T14 | 8000 | 1.50 | 0.67 | 1.10 | 2.99 | 31.78 | 24.92 | 0.70 | 9.15 | |||
T3 | 3 | 40 | 2000 | 2.00 | 0.42 | 1.79 | 3.53 | 27.51 | 27.13 | −0.33 | 3.90 | |
T7 | 4000 | 2.85 | 0.32 | 1.24 | 2.94 | 26.74 | 32.04 | −0.75 | 4.75 | |||
T11 | 6000 | 3.00 | 0.37 | 1.00 | 3.49 | 17.12 | 33.53 | −2.53 | 12.01 | |||
T15 | 8000 | 2.10 | 0.57 | 1.08 | 2.40 | 20.42 | 21.16 | −0.68 | 4.68 | |||
T4 | 4 | 80 | 2000 | 3.50 | 0.46 | 1.30 | 4.72 | 52.12 | 48.39 | −0.49 | 3.98 | |
T8 | 4000 | 3.80 | 0.49 | 1.39 | 2.62 | 32.61 | 22.54 | −0.34 | 4.13 | |||
T12 | 6000 | 8.00 | 0.44 | 0.93 | 2.05 | 13.97 | 21.85 | −0.78 | 4.70 | |||
T16 | 8000 | 5.60 | 0.29 | 0.98 | 2.13 | 13.83 | 21.16 | −0.37 | 4.29 | |||
T17 | 5 | 100 | 5 | 2000 | 1.20 | 0.25 | 1.11 | 2.51 | 17.61 | 22.70 | −0.37 | 3.69 |
T21 | 4000 | 1.50 | 0.20 | 0.89 | 2.03 | 14.54 | 25.51 | −0.57 | 4.93 | |||
T25 | 6000 | 1.55 | 0.17 | 1.13 | 2.39 | 13.80 | 14.30 | −0.16 | 2.70 | |||
T29 | 8000 | 0.55 | 0.27 | 1.12 | 2.14 | 14.47 | 17.14 | −0.30 | 2.89 | |||
T18 | 6 | 20 | 2000 | 2.10 | 0.24 | 1.38 | 3.15 | 29.05 | 25.96 | −0.76 | 4.65 | |
T22 | 4000 | 1.80 | 0.19 | 1.13 | 2.80 | 19.98 | 22.01 | −0.77 | 4.37 | |||
T26 | 6000 | 2.75 | 0.22 | 1.09 | 2.44 | 22.77 | 17.01 | −0.40 | 3.39 | |||
T30 | 8000 | 3.00 | 0.24 | 1.06 | 3.43 | 18.6 | 25.47 | −0.65 | 4.91 | |||
T19 | 7 | 40 | 2000 | 3.75 | 0.19 | 1.32 | 3.04 | 22.09 | 23.75 | −0.68 | 4.37 | |
T23 | 4000 | 5.15 | 0.30 | 1.07 | 2.73 | 19.28 | 22.32 | −0.86 | 4.37 | |||
T27 | 6000 | 3.50 | 0.36 | 1.19 | 3.03 | 19.62 | 22.70 | −0.30 | 2.91 | |||
T31 | 8000 | 4.25 | 0.31 | 1.32 | 2.56 | 15.31 | 20.72 | −0.16 | 2.91 | |||
T20 | 8 | 80 | 2000 | 7.50 | 0.37 | 1.19 | 2.57 | 18.45 | 25.34 | −1.23 | 6.00 | |
T24 | 4000 | 8.00 | 0.38 | 1.20 | 2.34 | 21.08 | 22.37 | −0.87 | 5.47 | |||
T28 | 6000 | 6.50 | 0.38 | 1.24 | 3.61 | 19.69 | 20.60 | −0.03 | 2.26 | |||
T32 | 8000 | 5.25 | 0.35 | 1.18 | 2.29 | 18.06 | 19.52 | −0.55 | 4.03 |
4.2 Surface Quality under Lower Feeding Amount and Cutting Depth
No. | T9 | T10 |
---|---|---|
Feeding amount (mm/min) | 50 | 50 |
Grinding depth (μm) | 5 | 20 |
Spindle speed (r/min) | 6000 | 6000 |
F | 0.80 | 2.10 |
COF | 0.29 | 0.30 |
Sdr | 1.06 | 1.02 |
Ra | 2.08 | 2.59 |
Rab | 0.26 | 0.31 |
Rp | 14.39 | 16.29 |
Rv | 18.59 | 18.55 |
Ssk | −0.11 | −0.69 |
Sku | 3.68 | 4.05 |
4.3 Surface Quality under Lower Feeding Amount and Larger Cutting Depth
Parameter | T15 | T16 |
---|---|---|
Feeding amount (mm/min) | 50 | 50 |
Grinding depth (μm) | 40 | 80 |
Spindle speed (r/min) | 8000 | 8000 |
F | 2.10 | 5.60 |
COF | 0.57 | 0.29 |
Sdr | 1.08 | 0.98 |
Ra | 2.4 | 2.13 |
Rab | 0.29 | 0.26 |
Rp | 20.42 | 13.83 |
Rv | 21.46 | 21.16 |
Ssk | −0.68 | −0.37 |
Sku | 4.68 | 4.29 |
4.4 Surface Quality under Larger Feeding Amount and Lower Cutting Depth
Parameter | T25 | T26 |
---|---|---|
Feeding amount (mm/min) | 100 | 100 |
Grinding depth (μm) | 5 | 20 |
Spindle speed (r/min) | 6000 | 6000 |
F | 1.55 | 2.75 |
COF | 0.17 | 0.22 |
Sdr | 1.13 | 1.09 |
Ra | 2.39 | 2.44 |
Rab | 0.31 | 0.32 |
Rp | 13.80 | 22.77 |
Rv | 14.3 | 17.01 |
Ssk | −0.16 | −0.4 |
Sku | 2.70 | 3.39 |
4.5 Surface Quality under Larger Feeding Amount and Larger Cutting Depth
Parameter | T27 | T28 |
---|---|---|
Feeding amount (mm/min) | 50 | 50 |
Grinding depth (μm) | 40 | 80 |
Spindle speed (r/min) | 6000 | 6000 |
F | 3.50 | 6.5 |
COF | 0.36 | 0.38 |
Sdr | 1.19 | 1.24 |
Ra | 3.03 | 3.61 |
Rab | 0.19 | 0.22 |
Rp | 19.62 | 19.69 |
Rv | 22.70 | 20.60 |
Ssk | −0.30 | −0.03 |
Sku | 2.91 | 2.26 |