Technology
Direct Milling of Hardened Steel PD613 / 60HRC MHDH445/645 / Square End Mill for Hardened Steel
Work size: 120×80(mm)
Material: PD613 60HRC
Cutting Time: 1hr 31min
By adopting MUGEN-COATING PREMIUM, MHDH445/645 provides stable milling to hardened steels.
Tool
MHDH645
Φ6×12 · Φ10×20
•L/D=2 and L/D=3 length of cut selection.
•Realized stably long tool life against high hardened steels (48~65HRC).
•Improved milling deflection and accuracy by advanced flute design.
MHDH445
Φ3
•Realized stably long tool life against high hardened steels (48~65HRC).
•Improved milling deflection and accuracy by advanced flute design.
Cutting Conditions
Machined by MHDH645
| Cutting process | Pre-roughing | Roughing | Finishing | ||
| Helical | Side | Slotting | |||
| Tool | MHDH645 φ10×20 |
MHDH645 φ6×12 |
MHDH645 φ6×12 |
||
| Spindle speed (min-1) |
3,200 | 5,000 | 5,000 | ||
| Feed （mm/min） |
1,600 | 350 | 2,000 | 600 | 600 |
| Depth of cut ap×ae(mm) |
20×0.3 | ap0.15 | 12×0.2 | ap0.15 | 8~12×0.01 |
| Coolant | Oil mist | ||||
| Cutting Time | 12 min | 3 min | 15 min | 20 min | 5 min |
Machined by MHDH445
| Cutting process | Roughing | Finishing |
| Slotting | Side | |
| Tool | MHDH445 φ3 | |
| Spindle speed (min-1) |
10,000 | |
| Feed （mm/min） |
500 | 350 |
| Depth of cut ap×ae(mm) |
ap0.05 | 1.5×0.01 |
| Coolant | Oil mist | |
| Cutting Time | 36 min | |
Comment
Approached the central circle part by helical processing and developed it by lateral processing, milling deflection is under 3 μm.
Both end slots are processed with MHDH445 φ3. Whole process of direct milling to block of hardened steel was finished in 1 hour 31 minutes.