CoroMill® Dura
Versatile solid end mills
Customer test on driven unit
Productivity
Tool life
| Industry segment: | General engineering |
| Component: | Rotating shaft |
| Workpiece material: | Stainless steel, M1.1.Z.AQ (SUS304), HB200 |
| Operation: | ae 8 mm (0.315 inch) slot milling with D10 end mill |
| Machine: | ST38GS II (DN solutions, Swiss turn) with driven unit |
| Coolant | External coolant (emulsion) |
Challenge: The customer had issues with vibration marks due to a weak clamping mechanism and needed to improve process security and increase tool life.
Result: With CoroMill® Dura, we achieved a good surface finish, increased tool life by 300% and productivity by 20%.
| Competitor | Coromant | |
| Tool | End mill (Z4) | 1K324-1000-XB 1730 (Z4) |
| Holder | ER25 collet chuck | ER25 collet chuck |
| ae / ap, mm (inch) | 8 (0.315) /4 (0.15) | 8 (0.315) /4 (0.15) |
| vc, m/min (ft/min) | 72.2 (236) | 72.2 (236) |
| fz, mm/z (in/z) | 0.014 (0.0006) | 0.027 (0.0011) -> 0.017 (0.0007)* |
| Tool life, no. of holes | 100 | 400~500 |
*Due to the weak clamping, we had to reduce fz to 0.017 mm/z (0.0007 in/z) to avoid vibration marks and achieve a good surface finish.
Automotive component
Productivity
Tool life
| Industry segment: | Automotive |
| Component: | Nozzle holder body |
| Workpiece material: | P2.2.Z.AN (EN18) HB 223 |
| Operation: | Side milling |
| Machine: | Makino Slim – HSKA63 |
Challenge: The customer was looking for a new solution to be able to increase tool life.
Result: With CoroMill® Dura, we increased tool life by 275% and got a 51% increase in productivity.
| Competitor | Coromant | |
| Tool | End mill | 1K334-0600-050-XD 1730 (Z4) |
| Cutter diameter, mm (inch) | 6 (0.236) | 8 (0.315) |
| Holder | Hydrogrip | Hydrogrip |
| vc, m/min (ft/min) | 66 (217) | 100 (328) |
| n | 3500 | 5300 |
| fz, mm/z (in/z) | 0.03 (0.0012) | 0.03 (0.0012) |
| Z effective | 4 | 4 |
| vf, mm/min (in/mn) | 420 (16.5) | 636 (25.0) |
| ap, mm (inch) | 11 (0.433) | 11 (0.433) |
| ae, mm (inch) | ~2 (0.079) | ~2 (0.079) |
| No. of passes | 2 (axial plunge) | 1 (full radial) |
| Cutting time, min | 0.3 | 0.18 |
| Tool life, components | 800 | 3000 |
Customer case, titanium component
Tool life
Reduced cycle time
| Component: | Interface component, plate diameter 350 mm (13.8 inch) |
| Workpiece material: | S4.1.Z.UT (Titanium grade -2) |
| Operation: | Slotting |
| Machine: | Feeler VMC |
| Coolant: | Emulsion |
Challenge: The customer needed to improve process security and reduce cycle time.
Result: Machining with dynamic milling, we could achieve a stable process with CoroMill® Dura. Tool breakages went down to zero and we could reduce cycle time by 66% and increase tool life by 300%.
| Competitor | Coromant | |
| Tool | Diameter 4 mm (0.157), z4 | 1K325-0500 XA 1730, z5 1K325-0400 XA 1730, z5 |
| Holder | ER32 collet chuck | ER32 collet chuck |
| vc, m/min (ft/min) | 20 (66) | 40/54 (131/177) |
| n | 1300 | 2550/4300 |
| fz, mm/z (in/z) | 0.003 (0.0001) | 0.004/0.018 (0.0002/0.0007) |
| vf, mm/min (in/mn) | 16 (0.630) | 51/400 (2.01/15.7) |
| ap, mm (inch) | 0.5 (0.020) | 2/2 (0.079/0.079) |
| No. of passes | 8 | 1 each |
| Time in cut/component, min | 180 | 60 |
| Tool life, components | 1 | 4 |
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Sandvik Coromant UK
+44 (0)121 368 0305