Tr 51Mc Remote Control Spot-Welding Unit - Fronius TransTig 1600 Operating Instructions And Spare Parts List

TR 51mc remote Standard welding of thin sheet metal constructions in such a way that they do not rust is
control spot- often not possible due to severe warping of the material. This is where spot welding
welding unit comes into its own. Similarly, problem welds, such as joins which are only accessible
from a single side, can easily be dealt with using the TIG spot-welding process.
Fig. 28
Functional description
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The automatic spot-welding sequence is as follows
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Important! In the event of any trouble, the welder can manually interrupt the automatic
spot-welding sequence by pulling back and releasing the trigger again!
Fig. 29

TR 51mc remote control spot-welding unit

The machine automatically switches over to 2-step operation
LED indicator (8) lights up
The current drop time is set directly on the power source
A special - insulated - spot-welding nozzle is used, which is mounted on the cone.
Depending on the size of spot-weld required, mount the tungsten electrode approx.
2 - 3 mm back from the edge of the nozzle
Set spot-welding current and time on the remote-control unit.
Place the torch on the workpiece and gently press down onto the base material
To carry out the spot-weld actuate the torch trigger. (Make sure there is no air-gap!)
Pull back and release the torch trigger.
Gas pre-flow time elapses.
Arc ignites with start-arc current.
Current rises via the set up-slope to the spot-welding current value set on the dial
(32).
The spot-welding time (0,1 - 8 secs.) set on the dial (33) elapses.
The current drops via the down-slope (dial 11) to the final crater current.
The gas post-flow time elapses.
Pull back and
Release the torch trigger
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Functional sequence with the TR 51mc remote control spot-welding unit
Connecting the remote control unit
- Link the connecting socket [G] on the
power source and the socket (31) on
the remote-control unit electrically
with the remote control cable.
- Plug in the plug-in connections the
right way round, and screw the
coupling ring on as far as possible.
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