Sandvik Coromant Heat resistant super alloys - Manual (Page 114)

112
Recommended start cutting data
CoroDrill ® Delta-C R846
3–16 Grade GC1220 20-30 0.06–0.12
CoroDrill ® 880
12–63.5
Peripheral insert= -LM H13A
20–30 0.04–0.10
Central insert = -LM 1044
Short hole drilling
Tool choice Cutting speed v
c
m/min Feed f
n
mm/r
Drill dia. D
c
mm
CoroDrill ® 800
Central insert – GC1025
25–43 Intermediate insert – GC1025
15–25
0.09–0.25
43–65 Peripheral insert – GC1025 0.20–0.30
Wear support pad – PM1
T-Max 424.10
Central insert, -23 GC1025
Intermediate insert,
63.5–184 -23 GC1025/H13A 20–30 0.15–0.30
Peripheral insert, -23 H13A
Wear support pad – S2
Deep hole drilling
Tool choice Cutting speed v
c
m/min Feed f
n
mm/r
Drill dia. D
c
mm
T-Max U 416.7
60–110 WCMX 06T308R-53 1020 25 0.10
(larger on
request)
Trepanning
Tool choice Cutting speed v
c
m/min Feed f
n
mm/r
Drill dia. D
c
mm