For continuous-light interruption machining ｜ CBN for machining hardened material
Continuous operations for hardened material at HRC55 or above
As the edge preparation increases the tool pressure on the insert increases.
[ Cutting conditions ]
SCM415(HRC63-65)
vc=200m/min f=0.1mm/rev ap=0.2mm
670 SFM f=.004 IPR p=.008 inch
DRY
[ Insert ]
TNGA160408
There is a direct correlation between an increase in the edge preparation and improvement of insert fracture resistance.
[ Cutting conditions ]
SCM415(HRC63-65)
vc=75m/min f=0.1mm/rev ap=0.3mm
250 SFM .004 IPR .012 DOC
DRY
[ Insert ]
TNGA160408
| ●1st Recommendation 〇2nd Recommendation |
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| Grade | Material | Operation type | Machining | Cutting speed (m/min) Cutting speed (SFM) | Feed(mm/rev) Feed(IPR) | DOC(mm) DOC(inch) | DRY | WET |
|---|---|---|---|---|---|---|---|---|
| B5K/B52 | Hardened material (HRC55 or above) | Turning Continuous machining | Finishing | 100 – 300 330 – 1000 | 0.05 – 0.2 .002 – .008 | 0.1 – 1.0 .004 – .040 | 〇 | ● |
| OD Turning of shaft parts | ||
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| B5K |
6 pcs / corner
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| Competitor’s coated CBN |
3 pcs / corner
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ZC7 achieved longer tool life per corner and significantly reduced tool costs with 4 corners compared to the competitor’s 2 corner CBN.
| ID boing of automotive parts | ||
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| B52 |
240 pcs / corner
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| Competitor’s coated CBN |
200 pcs / corner
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ZC7 machined the same number of parts as the competitor’s CBN.
ZC7 performance was much more stable and significantly reduced tool costs for the customer.
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