Operation; Tig Welding Operation - Panasonic YC-300BZ3YHD Operating Instructions Manual

9. Operation

9.1 TIG Welding operation


Pressing the torch switch by mistake may cause an electric shock.

When inspecting or replacing any torch parts, make sure to turn the power switch off in
advance.

The ON/OFF operation of the torch switch enables you
to perform welding as shown in the following diagram.

Turn the torch switch on with the torch put close to base
material, the high frequency wave comes first, and arc
follows.
1) "Crater: OFF" welding operation

Use this welding mode mainly for tack welding, the repe-
tition of short welding, and thin plate welding.
(1) Torch: ON
Arc ON
Torch switch
Pulse current
Output current
Welding current
Shield gas
OMCTT5621E18
WARNING
(2) Torch: OFF
Arc OFF
(1)
Pre-flow
* Pulse frequency (1/T): Number of repeat times of this waveform per second (a section
marked with T).
* Pulse width (tp/T): The proportion of Pulse Current Width (tp) to the total (T) of Pulse Current
Width and Welding Current Width
<Regarding the following diagrams>
• They assume that values other than "0" is set as the pre-
flow, post-flow, up slope and down slope times.
• They assume that the output current is set to pulse "ON".
(In the case of pulse "OFF", there should be no pulse
current or pulse width.)

Turn the torch switch on and off with the "Crater " switch
set to "OFF", and welding arc starts and stops in syn-
chronization with such switch operations. (There is no
self-hold, initial current and crater current.)
ＯＮ
(No "Self-hold")
tp
* Pulse frequency = 1/T
* Pulse width = tp/T
T
Operation
(2)
ＯＦＦ
Post-flow
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