L-TEC PCM-70 - Page 6

NOTES: 1.
Table 3 - PT-17A/AM Cutting Data for Carbon Steel
ut
Cutiing
“Amp
Stand
Air
Tip
Max
o
Pressure,
psig
0046”
40
Up
to
ES
1
P/N
19915
3/16"
SC
00527
—
—
|
&
—
|
I8ä"
—
|
75
z
P/N
19916
a
0057
85
3/16
5/16
75
H
P/N
19917
Ww
3/4
0
067"
105
1/4-3/8"
85
z
P/N
20056
$
I
As
a
general
rule,
the
thinner
material
requires
the
T
1/2
least
stand-off.
Es
100
AMP
c
Lu
Lr
«
zl
UO.
ege
E
SE
tS
sie
EEE
250
JL
150
100 200 300 350 400
CUTTING SPEED (IN/MIN.)
Lower standoffs produce superior cuts on thin materials. Do not initiate arc with cutting tip touching the work.
2.
The
speed
ranges
given
are
typical
for
best
quality
cuts.
Results
will
vary
depending
on
material,
surface
conditions,
operator
technique,
etc.
If
cutting
speed
is
too
fast,
you
may
lose
the
cut.
On
slow
speeds,
dross
may
accumulate.
If
speed
is
too
slow,
cutting
arc
may
go
out.
Air
cutting
typically
produces
a
rough
face
on
stainless
steel and
aluminum.
Table 4 - PCM-70/PT-121 Cutting Data
Cutting
Pressure
Current
Material
Cutting
speed
(in./min.)
for
Mech.
Cutting
Tip
Settings
Settings
Standoff
Thickness
|
Low
Carbon
Steel
Stainless
Steel
Aluminum
0.032"
Dia.
|
Plasma
(N2)-35
psig
30
Amps
1/8-in.
1/32"
200 200
250
P/N
17184
Cooling
Gas-25
psig
1/16"
100
100 150
1/8" 40 40 75
0.046"
Dia.”
|
Plasma
(N2)-25
psig
70Amps
|
1/4-in.
116"
140
200
250
P/N
17119
Cooling
Gas-25
psig
1/8"
50
80
100
3/16" 30 50 70
1/4" 25 40 60
| 1/2” 10 10 u 10
0.055"
Dia.
Plasma
(N2)-25
psig
70
Amps
1/4-in.
1/16”
175
|
220 240
P/N
999263
|
Cooling
Gas-25
psig
1/8"
55 85
100
1/4" 20 25 50
1/2" 8 | 8 |] 8 E
0.032" Dia. | Plasma (H35)-65 psig 35 Amps Conditions not developed.
P/N
17184
Cooling
Gas-25
psig
7
u
0.046"
Dia.
|
Plasma
(H35)-65
psig
70
Amps
Conditions
not
developed.
-
o
`
P/N 17119 Cooling Gas-25 psig
0.055"
Dia.
|
Plasma
(H35)-65
psig
70Amps
|
1/4-in.
1/4"
35
.40
|
|
80
E
P/N
999263
|
Cooling
Gas(Air)-25
psig
1/2"
10
15
18
3/4" 5 3 10 |
x
0.046"
cutting
tip
is
supplied
with
Torch
Spare
Parts
Kit
(999276).
0.055"
cutting
tip
may
be
used
in
place
of
0.047
tip
for
longer
consumable
life
at
70
amps
but
with lower cutting speed.
NOTE:
The
speed
ranges
given
are
typical
for
best
quality
cuts.
Results
will
vary
depending
on
material
composition,
surface
conditions,
operator
technique,
etc.
Also
see
Gas
Selection
Chart
(Table
5)
for
additional
reference.
If
cutting
speed
is
too
fast,
you
may
lose
the
cut.
On
slow
speeds,
dross
may
accumulate.
Table 5 - Cooling Gas Selection Chart PCM-70/PT-121
Low Carbon Steel Stainless Steel Aluminum
Cutting
Current
Mat.
Cooling
Gas
(N2
Plasma)
H-35
Pla.
Cooling
Gas
(N2
Plasma)
H-35
Pla.
Cooling
Gas
(N2
Plasma)
H-35
Pla.
Tip
Setting
Thick.
N2
CO2
Air
Air
N2
CO;
Air
Air
N2
|
CO
|
Ai
|
Air
`
0.032"
Dia.
|
30
Amps
1/32"
3S
|
2F
1F
=
iG
3G
G
|
=
ve
|
2E
3E
|
3E
P/N
17184
1/16"
3F
1G
2G
SS
3G
1G
2G
—
2E
1E
3G
—
1/8" 3F 1G 2G -— 2G 1G 3F — 1E 2G (39 | — —
0.047"
Dia.
70
Amps
1/32"
2G
1E
3G
—
3G
2G
1G
—
2G
3G
1E
—
P/N
999279
1/16”
1G
2G
3F
—
1G
2F
3F
=
1G
2G
3G
=
1/8"
3F
1G
2G
=
1G
3F
2G
—
1E
2G
3G
e
3/16"
3F
2G
1G
—
3S
2F
1F
=
3G
1E
2E
—
1/4"
3F
1G
2G
4F
3S
1F
2F
4F
2F
1G 3S
1E
1/2”
3S
1F
2F
1F
3S
1F
2S
1F
28
1F
3S
1E
3/4"
= —
—
1F
—
— —
1F
1E
S S a ol ——
E (Excellent) — Essentially no bottom dross; excellent cut face.
G (Good) — Moderate to no bottom dross; good cut face.
F (Fair) — Heavier but removable bottom dross or fair cut face.
S (Sever) — Heavy tenacious dross or poor face.
Numbers indicate order of cooling gas preferred for a
particular material and thickness.
6