GRINDING FEEDS AND SPEEDS Machinery's Handbook, 31st Edition
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Table 3. Group 3—Cast Iron
ECT = 0.00017 mm ECT = 0.00075 mm Constant C = 10710 Constant C = 8360 Constant C = 6465 Constant C = 4665 V T SMRR V T SMRR V T SMRR V T SMRR 100 3235 550 2525 835 1950 975 1410 1055 10 5885 1000 4595 1515 3550 1775 2565 1920 1 10710 1820 8360 2760 6465 3230 4665 3500 ECT = 0.00033 mm ECT = 0.00050 mm
10000
100
ECT = 17 ECT = 33 ECT = 50 ECT = 75
T = 1 min
1000
10
T = 10 min
T = 100 min
ECT = 17 ECT = 33 ECT = 50 ECT = 75
1
100
1000
10000
1000
10000
V, m/min
V, m/min
Fig. 3a. T - V
Fig. 3b. SMRR versus V , T = 100, 10, 1 minutes
Table 4. Group 4—Tool Steels, M1, M8, T1, H, O, L, F, 52100 ECT = 0.00017 mm ECT = 0.00033 mm ECT = 0.00050 mm ECT = 0.00075 mm Constant C = 7440 Constant C = 5805 Constant C = 4490 Constant C = 3240 V T SMRR V T SMRR V T SMRR V T SMRR 100 2245 380 1755 580 1355 680 980 735 10 4090 695 3190 1055 2465 1235 1780 1335 1 7440 1265 5805 1915 4490 2245 3240 2430
100
10000
ECT = 17 ECT = 33 ECT = 50 ECT = 75
T = 1 min
T = 10 min
10
1000
T = 100 min
ECT = 17 ECT = 33 ECT = 50 ECT = 75
1
100
1000
10000
1000
10000
V, m/min
V, m/min
Fig. 4a. T - V
Fig. 4b. SMRR versus V , T = 100, 10, 1 minutes
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