Panasonic YT-30TSW, Operating Instructions Manual

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2
2 Preparation for using
2.1 Connection with Power Source
Tighten the connection at the joint sections of cables. If the cable are
improperly connected, electricity can generate excessive heat and
can cause a fire.
●
Connect properly the welding torch according to the operation manual of the power source.
2.2 Selection of Electrode
●
The table below shows the general used electrode.
Welding method Material of electrode Marking color
D.C. TIG welding
Tungsten with 2% Thorium oxide(2% Thori-Tun)
Tungsten with 2% Cerium oxide(2% Ceri-Tun)
Tungsten with 2% Lanthanum oxide(2% Lan-Tun)
Red
Gray
Yellow green
A.C. TIG welding
Tungsten with 2% Thorium oxide(2% Thori-Tun)
Tungsten with 2% Cerium oxide(2% Ceri-Tun)
Pure tungsten(Pure-Tun)
Red
Gray
Green
Ceri-Tun is used popularly, Ceri-Tun is characteristic in good ability of arc starting during lower
welding current and long life, Lan-Tun is characteristic in lower consumption of electrode and long
maintaining of arc stability when D.C. TIG welding. Pure-Tun is used when A.C. TIG welding.
2.3 Selection of electrode diameter
Electrode diameter
Φmm
Welding current(A)
D.C. TIG welding(EN) A.C. TIG welding *
Thori-TunCeri-Tun Lan-Tun Pure-Tun Thori-TunCeri-Tun Pure-Tun
0.5 5~20 5~20 5~15
1.0 15~80 15~80 10~60
1.6 70~150 70~150 50~100
2.4 150~250 140~235 100~160
3.2 150~400 225~325 150~210
4.0 400~500 300~425 200~275
The above table shows the general welding current which correspond to each electrode diameter.
* When A.C. TIG welding, application electrode diameter bring minuteness difference because the
different cleaning action of apply welding machine. When electrode melt fastest, should be choice bigger
diameter electrode.
2.4 Selection of nozzle
●
The following table shows recommended nozzle diameter based on the gas shield. Select an
appropriate nozzle, according to this table, taking the workability and shape of work pieces into
consideration.
Argon gas flow
（
L/min
）
Nozzle bore (Nozzle No.)
3~6
Φ6.5mm(No.4)
4~8
Φ8.0mm(No.5)
5~10
Φ9.5mm(No.6)
6~12
Φ11.0mm(No.7)
Electrode Marking color