Other applicationsOther applications T-Slot millT-Slot mill

Recommended cutting conditions

Recommended insert grades (Vc: m/min)
Workpiece materialfz (mm/t)MEGACOATCarbide
PR1230PR1210KW10
Carbon steel0.1~0.15★ 100~200--
Alloy steel0.08~0.12★ 100~200--
Mold steel0.05~0.1★ 80~150--
Cast iron0.1~0.15-★ 100~200✩ 80~120
Non-ferrous metals0.1~0.15--★ 100~300

★: 1st Recommendation ✩: 2nd Recommendation

DescriptionG hSteelCditi tG hCast ironCditi t
(T-Slot nominal size)roove sape at pre-processT-Slotting conditionsonons o prevent chatteringroove sape at pre-processT-Slotting conditionsonons o prevent chattering
C=1~3mmVc= 120Vc= 60C=1mm and overVc= 120Vc= 80
METS21-S25(-H)Cfz= 0.1fz= 0.15Cfz= 0.12fz= 0.15
(Nominal size 12)(n= 1,820) (Vf= 182)(n= 920) (Vf= 137)(n= 1,820) (Vf= 218)(n= 1,210) (Vf= 182)
C=1~3mmVc= 120Vc= 60C=1mm and overVc= 120Vc= 80
METS25-S25(-H)Cfz= 0.1fz= 0.15Cfz= 0.12fz= 0.15
(Nominal size 14)(n= 1,530)(n= 760)(n= 1,530)(n= 1,020)
(Vf= 306)(Vf= 228)(Vf= 367)(Vf= 306)
C=1~3mmVc= 100Vc= 60C=1mm and overVc= 120Vc= 80
METS32-S32(-H)Cfz= 0.1fz= 0.15Cfz= 0.12fz= 0.15
(Nominal size 18)(n= 1,000) (Vf= 200)(n= 600) (Vf= 180)(n= 1,190) (Vf= 286)(n= 800) (Vf= 240)
C=9mmVc= 80Vz= 60C=9mm and overVc= 120Vc= 80
METS40-S32(-H)Cfz= 0.15fz= 0.15Cfz= 0.15fz= 0.15
(Nominal size 22)Chattering is likely when set to shallower(n= 480)(n= 960)(n= 640)
than C=9mm.(Vf= 144)(Vf= 228)(Vf= 192)
METS50-S32(-H) (Nominal size 28)Not recommended for steel because of chatteringVc= 120 fz= 0.15 (n= 760) (Vf= 228)Vc= 80 fz= 0.15 (n= 510) (Vf= 153)

M

Cutting speed: Vc(m/min), Revolution: n(min-1 ), Feed rate fz(mm/t), Table feed Vf(mm/min) Chattering is likely when fz is less than fz=0.1mm/t. Keep feed rate between fz=0.1 ~ 0.15mm/t. For cast iron machining, the bigger the C-dimension becomes, the less chattering occurs.

How to prevent damaging chips when steel machining

Before Improvement (Deep Groove at Pre-Process) After Improvement (Shallow Groove at Pre-Process)

Deep Shallow Improvement of chip biting

Chips are evacuated backward and Chips stay in the pre-process groove. chances of damaging chips are less. Make pre-process groove shallower to prevent the tool damage from chips. Use compressed air to aid in chip evacuation.