Sandvik Coromant Heat resistant super alloys - Manual (Page 75)

73
40
30
20
10
0
E-MM
M-PM
E-PL
Tool R300-063Q22-12H, z
n
7, D
c
51 mm, v
c
30 m/min,
a
e
36 mm, a
p
2 mm,
Material: Inconel 718 (44 HRC)
Minutes in cut
S40T S40T S40T
R300-1240E-PL R300-1240E-PL R300-1240E-PL
h
ex
0.12 mm h
ex
0.18 mm h
ex
0.24 mm
f
z
0.16 mm/tooth f
z
0.24 mm/tooth f
z
0.32 mm/tooth
= Average time in cut
= Average volume removed
The graph below shows the effect of the geometry depending upon the feed/tooth.
Total metal removed, cm 3
Recommendation – maximum productivity
and metal removal rates were achieved
using E-PL geometry at 0.16 mm
feed/tooth (0.12 mm h
ex
).
Geometry
0.1 mm
0.15 mm
Min (f
z
) Max (f
z
)
0.22 mm
0.3 mm
Effect of geometry/f
z
0.08 mm 0.18 mm
610
420
280
140
0