Operation
ORBIMAT 180 SW
| Operating instructions
42
orbitalum tools
GmbH, D-78224 Singen, www.orbitalum.com, Phone +49 (0) 77 31 792-0
(17.09.18) OW_ORBIMAT_180SW_BA_850060202_00_EN
Recommendation
[
Do
not
set the high- and low-pulse times with different values.
Experienced users can adjust the pulse times with different values. This is recommended for certain materials (such as
copper).
8.3.10
Adjusting weld speed and transition time ("Slope")
Auto programming specifies weld speeds in the range of 70 – 100 mm/min (at pipe circumference) that lie in the me-
dium range for the TIG process. As of a certain wall thickness, the system drives the motor in sync with the pulse: The
motor remains nearly still during the high-pulse phase and moves only during the low-pulse phase.
This method reduces the volume of the liquid material so that the melt pool remains under control even with wall thicknesses
of around 4.0 mm (0.157"). In these cases, the average value of both speeds is to be calculated for the resulting speed if the
high- and low-pulse times are the same length.
In principle, a
high
weld speed (up to a maximum of approx. 200 mm/min makes sense) is only possible if the process
does not have tolerances (offset, wall thickness, air gap, etc.).
At a somewhat <
lower
speed, irregularities (such as minor fluctuations in the pipe wall thicknesses) are tolerated by the
process. For auto programming
middle
values are therefore provided.
If a
higher
weld speed is required for an application:
X
Increase the current to introduce the same energy (per section) into the process again.
For
different
weld speeds in the sectors:
When switching between sectors at different speeds, the motor is accelerated or braked linearly if a slope time has
been set.
Deactivating transition in the speed
1. In the main menu, select "
System settings
" > "
Program settings
".
2. Select the "
No
" option for "
Speed without ramp
".
The slope is deactivated in the current procedure.
3. Press softkey 5 ("Menu").
The machine is ready to start.
If you are working with different speeds at high- and low-pulse current:
X
Do not select pulse times shorter than 0.2 seconds to balance the inertia of the motors and the
machinery.
If the motor is to nearly stand still in the high-pulse phase:
X
Enter value "1" for the speed.
The motor continues to run and does not have to overcome static friction when starting up. This
protects the motor and leads to higher precision while observing the angle of rotation while weld-
ing.
Auto programming automatically generates the value 1 for the weld speed in the high-pulse time
during operation in sync with the pulse.
