Electrode And Amperage Selection Chart; Striking An Arc - Miller Electric MPi 220P Owner's Manual

9-2.

Electrode and Amperage Selection Chart

3/32
1/8
6010
5/32
&
3/16
6011
7/32
1/4
1/16
5/64
3/32
1/8
6013
5/32
3/16
7/32
1/4
3/32
1/8
5/32
7014
3/16
7/32
1/4
3/32
1/8
5/32
7018
3/16
7/32
1/4
3/32
1/8
5/32
7024
3/16
7/32
1/4
3/32
1/8
Ni-Cl
5/32
3/16
3/32
1/8
308L
5/32
9-3.

Striking an Arc

6010
6011
6013 EP,EN
7014 EP,EN
7018
7024 EP,EN
NI-CL
308L
*EP = ELECTRODE POSITIVE (REVERSE POLARITY)
EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY)
1
2
3
1
2
3
EP ALL DEEP
MIN. PREP, ROUGH
HIGH SPATTER
EP ALL DEEP
ALL LOW GENERAL
SMOOTH, EASY,
ALL MED
FAST
LOW HYDROGEN,
MED
EP ALL
STRONG
FLAT
SMOOTH, EASY,
HORIZ LOW
FASTER
FILLET
EP ALL LOW CAST IRON
EP ALL LOW STAINLESS
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.
OM-253 918 Page 59
Ref. S-087 985-A
S-0049 / S-0050