SWEISS
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NOTES
25
§4.5 Welding Parameters
§4.5.1 Joint forms in TIG/MMA
§4.5.2 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
§4.5.3 TIG Parameters Matching
The corresponding relationship between gas nozzle diameter and electrode diameter
Gas nozzle diameter/mm
Electrode diameter/mm
6.4
0.5
8
1.0
9.5
1.6 or 2.4
11.1
3.2
Notice: the above parameters originate from Welding Dictionary P142, Volume 1 of
Edition 2.
Gas nozzle and the shield gas flow rate
a
butt joint
b
lap joint
c
coner joint
d T
joint
