WELDKAR WK TIG 320 AC PULSE Mode D'emploi page 24

be set is also displayed on the digital display (12).
This value can be changed by turning the control
knob (27). If the digital display (12) remains
inactive for a few seconds, it returns to the main
welding current setting.
26a) Hot Start: 0-100 (in steps of 10). The lighting of
this LED indicates that the display shows the
Hot Start setting. With the control knob (27),
this value can be changed. The welding machine
delivers a peak current to improve the ignition of
the electrode.
26b) Welding Current: 10-320 Ampere. The lighting
of this LED indicates that the display shows the
welding current. With the control knob (27), this
value can be changed.
26c) Arc Force: 0-100 (in steps of 10). The lighting of
this LED indicates that the display shows the Arc
Force setting. With the control knob (27), this
value can be changed. Increasing the Arc Force
voltage prevents sticking of the electrode during
the welding process.
27) Multi-functional control knob. The
multifunction control knob is to control the welding
current. In the programming mode, it's purpose is
also to adjust the parameters.
28) Process selection button. This control knob
is to select the desired welding mode. There are
three modes available, HF TIG, LIFT TIG and MMA
(electrode) welding.
28a) LED lamp indicating that the HF (High-frequency)
TIG mode is switched on. The high-frequency
ignition provides a very high voltage over a very
short period. The flame arc thus arises without
contact between the tungsten electrode and the
workpiece.
28b) LED lamp indicating that the LIFT TIG mode is
switched on. The flame arc occurs by carefully
lying the tungsten electrode onto the workpiece,
pressing the torch switch and then lifting the
welding torch. The welding current only starts
when the electrode is lifted from the workpiece.
28c) LED lamp indicating that the MMA (electrode)
mode is switched on.
29) Selection button welding current mode.
29a) AC TIG mode square wave. Narrower flame arc for
maximum penetration, process speed with good
control over the weld pool.
29b) AC TIG mode sine wave (standard). Steady, 'soft'
flame arc.
29c) AC TIG mode triangle wave. Less heat is being
introduced. Especially suitable for welding thin
material.
29d) DC direct current mode. Suitable for TIG welding
of, among others, steel, stainless steel, copper and
titanium. TIG welding of aluminum, magnesium and
zinc requires an alternating current (AC) mode.
30) HF TIG and LIFT TIG parameter settings.
Press the process selection button (28) to select
the HF TIG or LIFT TIG mode. By pressing the
control knob (27) the following parameters can be
selected and set. The lighting of the LED indicates
24
INVERTER WELDER WK TIG 320 AC/DC PULSE
which parameter has been selected. The value to
WK TIG 320 AC/DC PULSE
be set is also displayed on the digital display (12).
This value can be changed by turning the control
knob (27). If the digital display (12) remains
A
inactive for a few seconds, it returns to the main
welding current setting.
JOB
HF
LIFT
MMA
A A
A. Gas pre-flow: 0.1 – 2.0 seconds
Time setting for gas pre-flow before welding is
started.
B. Start-up current (only available with 4-stroke
setting): 10 – 320 A
For setting the start-up current. The start-up current
remains on until the torch switch is released after
being pressed.
C. Up slope: 0.0 – 10.0 seconds
To set the time in which the current, starting from
the minimum, reaches the set current value.
D. Main welding current: 10 – 320 A
For setting the welding current.
E. Basic welding current (only available with pulsed
welding): 10 – 320 A
To set the lowest point in the pulsation.
F. Pulse width (only available with pulsed welding):
5 – 95%
Sets the time ratio as a percentage between the
main welding current and basic welding current
when using the pulse mode. The neutral setting is
50%. A higher percentage gives a greater heat input,
while less heat is introduced at a lower percentage.
G. Pulse frequency (only available with pulsed welding):
0.5 – 999 Hz
To set the pulse frequency. Sets the frequency at
which the welding current alternates between the
main welding current and the basic welding current.
H. Down slope: 0.0 – 10.0 seconds
To set the time in which the current reaches the
minimum value and switches off the arc.
I. Crater current: 10 – 320 A
For setting the final current. The crater current
remains on until the torch switch is released after
being pressed.
J. Gas post-flow: 0.0 – 10.0 seconds
Sets the time for gas delivery at the end of welding.
K. AC frequency (only available in TIG AC mode):
50 – 250 Hz
This indicator light lights up when programming the
AC frequency. A higher AC frequency results in a
narrower, more controlled flame arc, which gives
deeper penetration and less heat input. A lower AC
frequency gives a wider, softer flame arc.
S
Continuous welding
Hz
D
D
E
E
C F
C F
M
M Width
G
G
B
B
Frequency
L
K
L K
Pulsed welding
Choice Parameter
H
H
I
I
J
J