Climax BW2600, Operating Manual

Page: 69 / 126

P/N 85555, Rev. 6 Page 53
4.4 P
REPARING THE BORE WELDER FOR WELDING
4.4.1 Setting the rotation speed
Do the following to set the rotation speed:
1. Set the rotation speed of the torch to the desired linear travel speed along
the bore surface.
2. Use Table 4-1 for approximate adjustments.
3. Time the spindle for fine adjustments according to the following guide-
lines:
a) For horizontal axis welding, multiply the bore diameter in inches by
8.4 to get the total seconds per rotation of the spindle at 22 in/min
(559 mm/min) of linear travel speed.
b) For vertical axis welding, multiply the bore diameter in inches by
10.4 to get the total seconds per rotation of the spindle at 18 in/min
(457 mm/min) linear travel speed.
Optimum travel speed for MIG welding is 20 in/min (508 mm/min). With vertical
bore welder axis welding, travel speed may be decreased. With horizontal bore
welder axis welding, travel speed should be increased to prevent lack of fusion on
the downhill section
. For accurate results, use a stopwatch to time the spindle
rotation.
4.4.2 Setting the gas flow
Check that the shielding gas is connected to the feeder mechanism and that the
flow is adequate for MIG welding (25–35 cfh).
T
ABLE
4-1. R
OTATIONAL SPEED IN INCHES AT
20
IN
/
MIN
(508
MM
/
MIN
)
Dial settings Bore size in inches (mm) Seconds per rotation
1 25 (635) 240
2 11 (279) 100
3 6 (152) 40
4 3.8 (97) 24
5 3.0 (76) 18
6 2.3 (58) 14
7 1.9 (48) 12
8 1.3 (33) 10
9 1.0 (25) 8.5
10 .84 (21) 8.0