用于重型断续加工 ｜ CBN 用于加工淬硬材料
Heavy interrupted machining of hardened materials of 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 .004 IPR .008 DOC
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 |
|---|---|---|---|---|---|---|---|---|
| B40 | Hardened material (HRC 55 or above) | Turning Heavy interrupted machining | Finishing | 30 – 150 100 – 500 | ~ 0.1 ~ .004 | 0.1 – 1.0 .004 – .040 | ● | 〇 |
| Interrupted ID boring of automotive parts | ||
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| B40 |
2,300 pcs / corner
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| Competitor’s CBN |
1,500 pcs / corner
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B40 achieved longer tool life through the heavy interruptions without chipping
| Interrupted OD turning gear part coupling | ||
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| B40 |
400 pcs / corner
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| Competitor’s CBN |
100 pcs / corner
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Competitor’s CBN had edge damage due to interruptions. B40’s excellent toughness achieved 4 times longer tool life.
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