Fronius TransTig 1700 Operating Instructions And Spare Parts List

27
Fig. 28 TR 51mc remote control spot-welding unit
Standard welding of thin sheet metal constructions in such a way that they do not rust is
often not possible due to severe warping of the material. This is where spot welding
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. 29 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.
TR 51mc remote
control spot-
welding unit
Functional description
- 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!)
The automatic spot-welding sequence is as follows
- 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.
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!
t
H
Pull back and
Release the torch trigger
Gas pre-flow time
Arc ignition
Start of cycle
I
H
End of welding
Gas post-flow time
Current-rise via
up-slope
Current-drop
via down-slope
Spot-welding with set
welding current I
H
in conjunction with
spot-welding time t
H
t
O
I

Fronius TransTig 1700 Specifications

General

Brand	Fronius
Model	TransTig 1700
Category	Welding System
Language	English