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


•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.

For product details For size variation

MHDH445


•Realized stably long tool life against high hardened steels (48~65HRC).
•Improved milling deflection and accuracy by advanced flute design.

For product details For size variation

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.