20
Setup Guide
Getting Started
If you are needing basic help getting started, here are some general settings and selections to get you started. This guide is intended to be only a start-
ing point, not a completely exhaustive source. Keep in mind that no guide is a substitute for practice and experience. You may find that your final set-
tings may be different from the ones listed. The following guide does not represent the maximum capability, or even the recommended capability of
the unit. However, it demonstrates what is considered to be a practical capability limit of multiple variables when factored together. It is possible to
weld thicker materials with the same amp range. However, as a best practice, the industry does not recommend heavy passes, rather thinner
“
stacked
”
passes on thicker plate. Multi
-
pass welds are typically stronger, have less defects and require less amperage. On heavy gauge plate, such as
3/8”
up
to 3 to 5 passes may be required. Additionally beveling of the joint is required for complete joint penetration, even at higher amperages. The thickness
rating takes into account the
“
heat sink
”
capability of the metal, and the power of the amperage to overcome the conductivity of heat of the metal used
using multiple passes. The position of the weld also influences the amperage, cup size, gas flow rate and tungsten size used. For the following recom-
mendations, these are all in
“
flat
”
position. Modify your settings accordingly. Vertical will require less amperage the more you weld
“
up hill
”.
Amp Range
Electrode Dia. Cup Number Flow Rate (CFH)
Standard Lens
Flow Rate (CFH)
Gas Lens
Metal Thickness
Aluminum (AC)
Metal Thickness
Steel/Stainless (DC)
3
-
30A
.040 (1.0 mm)
4 or 5
5 to 7
4 to 5
.005”
to
.030”
.003”
to
.035”
5
-
70A
1/16 (1.6mm)
4, 5, 6
6 to 12
6
.005”
to
.0612”
.005”
to
.093”
10
-
200A
3/32”
(2.4mm)
5,6, 7 or 8
10 to 18
8 to 12
.010”
to
.250”
.08”
to
.375”
20
-
250A
1/8”
(3.2mm)
6,7,8 or 10
15 to 25
10 to 18
.020”
to
.375”
.015”
to
.500”
50A
-
350A
5/32 (4mm)
8
-
10
20
-
30
15
-
25
.050 to
.625”
.050”
to
.750”
Cup Size
Inside Diameter
4
1/4”
5
5/16”
6
3/8”
7
7/16”
8
1/2”
10
5/8”
11
11/16”
12
3/4”
Содержание PowerTIG 200 EXT
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