Hobart Welding Products CHAMPION ELITE OM-240 438B - Manual (Page 62)

OM-240 438 Page 58
14-2. Electrode and Amperage Selection Chart
Ref. S-087 985-A
3/32
1/8
5/32
3/16
7/32
1/4
1/16
5/64
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
3/32
1/8
5/32
6010
&
6011
6013
7014
7018
7024
Ni-Cl
308L
50 100 150 200 250 300 350 400 450
ELECTRODE
DC* AC
POSITION
PENETRA
TION
USAGE
MIN. PREP, ROUGH
HIGH SPATTER
GENERAL
SMOOTH, EASY,
FAST
LOW HYDROGEN,
STRONG
SMOOTH, EASY,
FASTER
CAST IRON
STAINLESS
DEEP
DEEP
LOW
MED
LOW
LOW
LOW
LOW
ALL
ALL
ALL
ALL
ALL
FLAT
HORIZ
FILLET
ALL
ALL
EP
EP
EP,EN
EP,EN
EP
EP,EN
EP
EP
6010
6011
6013
7014
7018
7024
NI-CL
308L
*EP = ELECTRODE POSITIVE (REVERSE POLARITY)
EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY)
ELECTRODE
AMPERAGE
RANGE
DIAMETER
14-3. Striking an Arc
S-0049 / S-0050
1 Electrode
2 Workpiece
3 Arc
Scratch Technique
Drag electrode across workpiece
like striking a match; lift electrode
slightly after touching work. If arc
goes out, electrode was lifted too
high. If electrode sticks to work-
piece, use a quick twist to free it.
Tapping Technique
Bring electrode straight down to
workpiece; then lift slightly to start
arc. If arc goes out, electrode was
lifted too high. If electrode sticks to
workpiece, use a quick twist to free
it.
1
2
3
1
3
2