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Dukane Manual Part No. 403-570-01
Page 61
Section 7 - Optimizing Performance
2000
3000
4000
0
1000
1 2 4 6 8 10 123
RPM
Average Weld Diameter (inch)
D
Spin Speed (rev/min)
v = 240
v = 360
v = 480
v = 120
v = 600
v = 720
v = 960 in/sec
v = 840
120 in/sec = 10 ft/sec — 3 m/sec
240 in/sec = 20 ft/sec — 6 m/sec
360 in/sec = 30 ft/sec — 9 m/sec
480 in/sec = 40 ft/sec — 12 m/sec
600 in/sec = 50 ft/sec — 15 m/sec
720 in/sec = 60 ft/sec — 18 m/sec
840 in/sec = 70 ft/sec — 21 m/sec
960 in/sec = 80 ft/sec — 24 m/sec
Figure 7–1 Dependence of Spin Speed on the Weld Diameter for Selected Surface Speeds
surface speeds between 360 and 600 in./sec. However,
speeds of 120 in./sec. and lower have been used with good
results. The mathematical relationship between surface
speed and spin speed (RPM) is given by the equation:
RPM =
where
v is the surface velocity
D is the average weld diameter
A plot of the spin speed and average weld diameter for a
number of surface speed values is shown in Figure 7-1.
60 v
π D