Grinding; Maintenance - ESAB ET 17 Instruction Manual

GB
Pure tungsten electrode (AC) - Green,
WP
Cerium alloyed tungsten eletrode
(AC/DC) - Grey, WC20
Lantha alloyed tungsten electrode (DC)
- Gold, WL15
Lantha alloyed tungsten electrode
(AC/DC) - Black, WL10
Selection table
1.0
1.6
2.4
3.2
11.3

Grinding

Grind tungsten electrodes according to the following table:
NOTE that tungsten electrodes must be ground lengthways. If they are ground
incorrectly the arc may be unstable. When the welding current is increased the angle
must also be increased.
When welding with alternating current (AC) the electrode end must be gently
rounded. Grinding the electrode is then unnecessary. Light grading of the edge is
sufficient. The electrode forms itself if it is carefully overloaded. If the tip becomes
ball shaped while welding using alternating current, this is a sign that the current is
too high for the diameter of electrode being used.
Welding current
20 A
20 -100 A
100 -200 A
over 200 A
12

MAINTENANCE

Regular maintenance is important for safe, reliable operation.
IMPORTANT! Switch off the ignition of the power source when cleaning the torch.
CAUTION
All guarantee undertakings from the supplier cease to apply if the customer attempts any
work to rectify any faults in the product during the guarantee period.
bg20e1
used when welding light metal alloys
used when welding light metals such as aluminium and
magnesium. Electrode tip must be rounded when
welding
usually used when welding stainless steel, steel,
copper, titanium etc.
used when welding light metal alloys, stainless steel,
steel, copper, titanium etc.
W
6.4/8.0 10-60
6.4/8.0/9.8 50-100
9.8/11.2/12.7 100-160
11.2/12.7 130-180
Electrode angle
30
30-90
90-120
120
- 35 -
A / AC
CeO La O CeO
2 2 3
- 15-100 70-80
60-90 70-160 80-140
90-130 110-200 150-210
140-190 150-205 220-320
A / DC
La O
2 2 3
20-100
80-160
120-230
200-305
© ESAB AB2011