Table of Contents
Advertisement
5-2.
Preparing Tungsten
a
CAUTION
FLYING SPARKS AND HOT METAL
can cause
injury
and start fires.
Shape tungsten
electrode
only
on
grinder
with
properguards
in
a
safe location
wearing
proper face, hand,
and
body protection.
Keep
flammables away.
w~rn2.I 9/91
1
Tungsten
Electrode
2
2
Tapered
End
Grind
end of
tungsten
on
fine
grit,
hard abrasive wheel before
weld
ing.
Do
not
use
wheel for other
jobs
or
tungsten
can
become contami
nated
causing
lower weld
quality.
2-1/2 Times
Electrode Diameter
1
Arc Wander
2
Point
3
Grinding
Wheel
4
Radial Ground
Wrong Tungsten Preparation
Wandering
Arc
Ret.
S.0162
1
Tungsten
Electrode
2
Balled End
Ball
end of
tungsten
before
welding
by applying
either
an
ac
amperage
slightly higher
than what is
recom
____________________
1-1/2
Times
trode
positive
amperage.
Ele
eter
(see
Table
5-1),
or
a
dc elec
ctrode Diameter
mendedforagivenelectrodediam
2
Ret.
S-0161
Figure
5-1.
Preparing Tungsten
For AC Or DC Electrode Positive
(DCEP) Welding
\
/
Ret. S0161
1
1
Stable Arc
2
Flat
Diameter of
this
flat
amperage
capacity.
3
Grinding
Wheel
4
Straight
Ground
determines
SI
4~
~
Ideal
Tungsten Preparation
Stable
Arc
Ret. S-0162
2
3
4
Figure
5-2.
Preparing Tungsten
For DC Electrode
Negative (DCEN) Welding
OM-1563
Page
7
Advertisement
Table of Contents
