|
TABLE 3: CUTOFF AND FORM TOOL TURNING OF ZIRCONIUM
| |
|
FEED
|
| |
|
ipr
|
| |
|
(mm/r)
|
| TOOL
|
SPEED
|
Cutoff Tool Width
|
Form Tool Width
|
| AISI
|
fpm
|
.062
in |
.125in
|
.250in
|
.500
in |
.750
in |
1.00
in |
1.50
in |
2.00
in |
| (ISO)
|
(m/m)
|
(1.5mm)
|
(3mm)
|
(6mm)
|
(12mm)
|
(18mm)
|
(25mm)
|
(35mm)
|
(50mm)
|
| T15,
M42 |
65
|
.002
|
.0025
|
.003
|
.003
|
.0025
|
.0025
|
.002
|
.002
|
| C-2
|
190
|
.002
|
.0025
|
.003 |
.003 |
.0025 |
.0025 |
.002 |
.002 |
| (S9,
S11) |
(20)
|
(.050)
|
(.063)
|
(.075) |
(.075)
|
(.063)
|
(.063)
|
(0.050) |
(0.050)
|
| (K40,
M40) |
(58)
|
(.050)
|
(.063) |
(.075) |
(.075) |
(.063) |
(.063)
|
(0.050) |
(0.050)
|
Milling
Both vertical face and horizontal slab
milling of zirconium give good results. Whenever possible,
zirconium should be climb milled to penetrate the work at
the maximum approach angle and depth of cut while emerging
through the work-hardened area. It is important that the milling
cutters be kept very sharp and the work area flooded or sprayed
with coolant to completely wash away the chips from the tool.
Specific operating set points for milling zirconium are given
in Tables 4-9. Lead angles on tools should be between +15
and +30 degrees, with positive axial and positive radial rake
angles.
TABLE 4: FACE MILLING OF ZIRCONIUM
| |
|
Carbide Tool |
|
|
High
Speed
Steel Tool
|
|
| DEPTH
OF CUT
in
(mm)
|
TOOL
MATERIAL
AISI
(ISO)
|
SPEED
fpm
(m/min)
|
FEED
PER TOOTH
in
(mm)
|
TOOL
MATERIAL
AISI
(ISO)
|
SPEED
fpm
(m/min)
|
FEED
PER TOOTH
in
(mm)
|
| 0.040
|
C-2
|
285-350
|
0.006
|
M2,
M3 |
175
|
0.006
|
| 0.150
|
C-2
|
235-290
|
0.010
|
M2,
M3 |
115
|
0.010
|
| 0.300
|
C-2
|
190-225
|
0.014
|
M2,
M3 |
90
|
0.014
|
| (1.0)
|
(M20)
|
(87-105)
|
(0.15)
|
(S4,
S2) |
(53)
|
(0.15)
|
| (4.0)
|
(M20) |
(72-88)
|
(0.25)
|
(S4,
S2) |
(35)
|
(0.25)
|
| (8.0)
|
(M20)
|
(56-69)
|
(0.36)
|
(S4,
S2) |
(27)
|
(0.36)
|
Three
of Ten 1 2
3 4 5
6 7
8 9
10
|
