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Dukane 403-570-01 User Manual

Page 67

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Dukane Manual Part No. 403-570-01

Page 1

Section 7 - Optimizing Performance

2000

3000

4000

0

1000

1

2

4

6

8

10

12

3

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