Design and function
MIG/MAG welding
54
099-005403-EW501
18.08.2016
Special, non-latched
Figure 5-30
Step 1
• Press and hold torch trigger
• Shielding gas is expelled (gas pre-flows)
• Wire feed motor runs at “creep speed”.
• Arc ignites after
the wire electrode makes contact with the workpiece, welding current is flowing (start
program P
START
for the time t
start
)
• Slope to main program P
A
.
Step 2
• Release torch trigger
• Slope to end program P
END
for the time t
end
.
• WF motor stops.
• Arc is extinguished after the preselected wire burn-back time expires.
• Gas post-flow time elapses.
