Result2,229 pcs on two edges
Cutting conditions
| Grade | KBN9020 |
|---|---|
| Insert model | — |
| Workpiece material | D2 cold-work tool steel |
| Part / feature | Hardened steel turning |
| Operation | Continuous turning (OD) |
| Cutting speed vc | 1214 sfm (约 370 m/min) |
| Feed f | 0.004 inch/rev（约 0.10 mm/rev） |
| Depth of cut ap | 0.004 inch（约 0.10 mm） |
| Coolant | Dry |
| Data source | Field test at customer site |
Result and comparison basis
Two edges machined 2,229 parts with flank wear of only 0.03/0.04 mm; the reference grade failed at 2,056 parts with 0.3 mm wear and edge chipping. Cutting speed 370 m/min (1,214 sfm), dry.
Comparison basis: Competitor reference grade.
Comparative data from Koves internal cutting tests and customer field applications. Competitor grades are anonymized as reference grades. Results depend on workpiece, machine and setup; validate on your own production before adopting parameters.
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