SMART 200 TIG PULSE
29
Lifting arc: take the electrode to scrape the workpiece for striking arc. But it may cause the arc scratch, so must to lift
arc in the groove..
electrode
workpiece
electrode
electrode
workpiece
workpiece
Scrape the workpiece for
strinking arc
Electrode touch
workpiece
Lift up for about 2-4mm
scrape
up
touch
2
~
4mm
3.3.3 Manipulation of electrode
In MMA welding, there are three motions to being matched in the end of electrode: the electrode moving to the
molten pool along axes; the electrode swing right and left; the electrode moving along welding way.
electrode
workpiece
weld
1
2
3
2
1-electrode moving; 2-the electrode swing right & left; 3-the electrode move along weld
The operator can choose the manipulation of electrode based on welding joint sharp, welding position, electrode
spec, welding current and operation skill, etc.
3.4 Welding Parameters
Joint forms in TIG/MMA
The explanation of welding quality
The relation of welding area color & protect effect of stainless steel
Welding area
color
argent ,
golden
blue
red-grey
grey
black
Protect effect
best
better
good
bad
worst
The relation of welding area color & protect effect of Ti-alloy
Welding area
color
bright argent
orange-
yellow
blue-
purple
caesious
white powder of
titanium oxid
Protect effect
best
better
good
bad
worst
a – butt joint
b – lap joint
c corner joint
d – T joint