Sandvik Coromant Heat resistant super alloys - Manual (Page 72)

70
E-PL E-MM M-MM
CoroMill® 300
100
80
60
40
20
0
GC2030 S30T GC2040 S40T GC1030
R300-1240E-MM R300-1240E-PL R300-1240E-MM R300-1240E-PL R300-1240E-PM
CoroMill®300 – positive
round face milling concept
Three main geometries are available for
CoroMill 300 cutters when machining HRSA
materials:
High edge sharp-
ness and preci-
sion. Positive
geometry with
edge reinforce-
ment. First choice
with S40T.
High edge sharp-
ness and preci-
sion in combina-
tion with security.
First choice for
applications with
S40T.
Good choice for
general conditions.
Reinforced edge
security in grade
GC2040 compared
to E-PL and E-MM
geometry.
Grade/geometry recommendations for milling HRSA
Tool R300-063Q22-12H
z
n
7, D
c
51 mm, v
c
30 m/min, a
e
36 mm,
a
p
1.5 mm, f
z
0.2 mm/tooth, h
ex
0.12 mm
Material: Inconel 718 (40 HRC)
Minutes in cut
= Average time in cut
Recommendation - longest tool life and highest total of removed metal with the GC1030
E-PM insert.
Good conditions First choice Difficult conditions