For continuous machining ｜ Ceramic for machining materials 30 - 70 HRC
Hardened material
Continuous finish turning hardened materials 30-70HRC
CBN’s low hardness reduces its wear resistance
Ceramic has superior wear resistance vs. CBN machining under HRC55
Effect of Wiper Flat on Cutting Edge
[ Cutting conditions ]
CNGA120412
Vc = 100m/min F = 0.1mm/rev ap = 0.5mm
330 SFM .004 IPR .020 DOC
Using a ZC7 insert with AG-chipbreaker improves surface finish and reduces machine down-time due to chip tangling. This results in increased productivity.
[ Cutting conditions ]
SCM415 – carburized HRC50
vc = 150m/min f = 0.2mm/rev ap = 0.2mm
500 SFM .008 IPR .008 DOC
| Corner R | DOC (mm) DOC (inch) | Feed (mm /rev) Feed (IPR) |
|---|---|---|
| R0.4 R .016 | 0.15 0.007 | 0.05 ～ 0.08 .001 ～ .003 |
| R0.8 R .032 | 0.3 0.015 | 0.08 ～ 0.10 .003 ～ .004 |
| R1.2 R .047 | 0.4 0.02 | 0.10 ～ 0.13 .004 ～ .005 |
| R1.6 R .063 | 0.5 0.03 | 0.13 ～ 0.16 .005 ～ .006 |
| Round insert | 2.0 0.08 | 0.16 ～ 0.25 .006 ～ .010 |
| ISO | Work material | Coolant | Grade | vc (m/min) (SFM) | ap (mm) (inch) | f (mm/rev) (IPR) |
|---|---|---|---|---|---|---|
 |
Hard Turning Finishing Continous cutting |
DRY/WET | ZC7 | 40 – 200 130 – 660 | 0.1 – 0.7 .004 – .030 | 0.07 – 0.2 .003 – .008 |
| Mill Roll Rough-Finish Turning |
DRY | HC7 | 90 – 180 300 – 600 | 0.5 – 2.0 .020 – .080 | 0.1 – 0.3 .004 – .012 | |
| Mill Roll Rough-Finish Turning（CPM） |
120 – 150 400 – 500 | 0.6 – 2.0 .024 – .080 | 0.1 – 0.3 .004 – .012 |
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