Tig Welding With High-Frequency Ignition (Hf); Tig Welding With Contact Ignition (Without Hf) - Fronius TransTig 1600 Bedienungsanleitung

TIG WELDING WITH HIGH-FREQUENCY
IGNITION (HF)
Warning! At TIG welding, the manual electrode cable will
always be live when:
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the mains master switch
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the operating mode is in the
and when the "start welding" signal has been given from
the torch trigger.
Warning! Make sure, when the manual electrode cable is
not in use, that it is either disconnected from the machine
or else fastened to the machine in such a way (insulated)
that the electrode holder and the coated electrode cannot
touch any electrically conductive or earthed parts.
Fig. 21 Transtig 1600 / 1700 TIG welding machine consisting of: power source with
control unit, manual torch, earth cable (gas cylinder with pressure regulator
without figure)
START UP
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Fit the torch with a tungsten electrode and a gas nozzle
(see the instruction manual for the torch concerned).
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Plug the earth cable into the current socket
firmly.
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Connect the gas hose to the machine and the gas pressure
regulator.
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Plug in the mains plug.
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Switch on the mains master switch
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Shift selector button into the
LED or lights up.
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If necessary, connect a remote control unit
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Select welding parameters (command value for main current I
is displayed on ammeter
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Open the gas cylinder valve by turning it anticlockwise.
Igniting the arc:
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Make sure the welding current is switched off. Place the
electrode on the weld at the point where the arc is to be ignited,
tilt the torch backwards until the edge of the gas nozzle is resting
on the workpiece, leaving a gap of between 2 and 3 mm
between the tip of the electrode and the workpiece. Fig. 22a
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Close your visor.
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Switch on the welding current with the torch trigger
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Arc ignites without touching the workpiece. Fig. 22b
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Move the torch into the normal position. Fig. 22c
Advantage: no contamination of either the electrode or the work-
piece.
Important! After ignition, the high frequency switches off automa-
tically.
is ON
or position
and latch in place
or positions.
).
a) Fig gas nozzle b) Contact-free
Fig. 22 Ignition with HF ignition
Ignition monitoring:
If, after fruitless attempts to ignite an arc or after an arc-interrupt,
the welder forgets to stop the control sequence (2-step or 4-step)
by means of the torch trigger, the shielding gas will continue to flow,
leading to considerable wastage of gas. To prevent this, a moni-
toring function automatically interrupts the control sequence after
approx. 5 seconds in such a case. When another attempt is made
to ignite an arc, this must once again be initiated via the torch
trigger.
TIG WELDING WITH CONTACT IGNITION
(WITHOUT HF)
START UP
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Fit the torch with a tungsten electrode and a gas nozzle
(see the instruction manual for the torch concerned).
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Plug the earth cable into the current socket and latch in place
firmly.
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Connect the gas hose to the machine and the gas pressure
regulator.
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Plug in the mains plug.
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Switch on the mains master switch
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Press selector button
positions. LED
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If necessary, connect a remote control unit
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Select welding parameters (command value for main current I
is displayed on ammeter
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Open the gas cylinder valve by turning it anticlockwise.
IGNITING THE ARC
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Make sure the welding current is switched off. Place the
electrode on the weld at the point where the arc is to be ignited,
tilt the torch backwards until the edge of the gas nozzle is resting
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on the workpiece, leaving a gap of between 2 and 3 mm
between the tip of the electrode and the workpiece. Fig. 23a
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Close your visor.
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Switch on the welding current with the torch trigger - shielding
gas starts flowing
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Resting the torch on the edge of the nozzle, gradually tilt it
upwards until the tip of the electrode touches the workpiece.
Fig. 23b
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The arc ignites when the torch is raised
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Move into the normal position. (Fig. 23c)
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Start welding
a) Fit gas nozzle b) Touch workpiece
Fig. 23 Ignition with contact ignition
13
c) Arc is ignited
HF ignition
to the and or
and resp. and lights up
).
c) Arc is ignited
to ignite arc
and
H