Arc Machines 307 - Manual (Page 132)

Arc Machines, Inc. Model 307 Orbital Tube Welder Training
Document No. 740096 Chapter 12. Page 3.
Rev.A
The Radial Graph (pie chart) feature of the Model 307 can
be used to detemine the location of level changes on the
weld circumference. To display the pie chart during test
runs or welds, touch the System Setup button on the 307
Opening Screen and then select the gray In-Sequence
Display button, Select Radial Graph.
Make a Trial Weld. With the power supply properly in-
stalled, and weld head calibrated, install weld coupons in weld
head and connect an appropriate purge. From the Weld Sched-
ule - Weld Screen with the green Test button, touch the green
button to show the red Weld button then touch Sequence Start.
Examine each section of the Trial Weld and adjust parameters
in each level. Examine weld for discoloration, misalignment,
cracks and porosity. Make changes in weld procedure to
achieve repeatable consistent high-quality welds.
Trial Weld - determine the direction of electrode travel, the location of level
changes and make modifications as needed. Note- the tip of the Downslope
points in the direction of electrode travel.
Radial Graphs generated by the Model 307 during the welding sequence show
position of electrode on the tube during the weld and at the end of each level.
Left: electrode in the middle of Level 4. Right: electrode near the end of
Downslope. Start position was 3 o’clock.