Laser Hot-Wire Brazing With Rcu 5000I; A: Start Of Brazing; B: End Of Brazing - Fronius Laser hybride Instructions De Service

Laser hot-wire brazing with RCU 5000i

A: Start of brazing

To obtain good wetting to sidewalls in the brazed join, ensure the following:
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Preconditions for laser hot-wire brazing
Points 3., 4. and 5. describe analogue input signals.
Re. Point 3.:
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NOTE!
A clearer overview of the program can be obtained by amalgamating all the signals
into one single command in a sub-program (e.
g. "Start of brazing").
IMPORTANT! Laser hot-wire brazing is a spatter-free process. This means that it is not
absolutely necessary to have an additional fume-extractor. It is sufficient if the crossjet can
be clearly heard working (at an operating pressure of between 0.5 and 1 bar = 7.22 - 14.45
psi).

B: End of brazing

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Focus diameter = Wire diameter + 30%
Torch tilt angle is 35° (trailing)
35 °
+30 %
Welding voltage = welding current x welding circuit resistance
(welding circuit resistance depends on the contact tip and filler metal)
Value is below 10 V (voltage limitation)
"Stop movement of the robot"
Reset "Wire feed"
Reset "Welding ON"
Initialise "Wire retract"
Initialise "Time-lag" (0.2 s)
Reset "Wire retract"
Initialise "Laser OFF"
Reset "Gas test"
Initialise "Gas test"
1
Select operating mode 3 "Internal pa-
2
rameter selection"
- Set operating bit "0" to "1"
- Set operating bit "1" to "1"
- Set operating bit "2" to "0"
Select the following parameters via the
3
RCU 5000i (CC/CV window):
- welding current
- Welding voltage
- Wire speed
Initialise "Welding ON"
4
Initialise "Wire feed"
100 % 5
Wait for current flow signal ("Arc esta-
6
blished")
Initialise "Laser ON"
7
Initialise "Robot start"
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