Using The Second Gas Pressure Level ("Flow Force") - Orbitalum ORBIMAT 300 SW Traduccion Del Manual De Instrucciones Originales

ORBIMAT 300 SW
Abb. 16: Tacking function
Selection field "Weld After Tacking" (optional)
Select this option to prefasten the workpieces in order to avoid any possible material distortion during the welding
process.
At an activated function the welding process starts automatically after the tacking process.
8.7

Using the second gas pressure level ("Flow Force")

Auto programming generates gas pre purge times of 30 seconds if a closed weld head is selected.
The machine can first fill the weld head with a higher gas pressure during the gas pre purge time to reduce the time.
The gas pre purge time is the total time for filling the welding chamber before welding.
Only values which are at least 2 seconds shorter than the total gas pre purge time are possible for the Flow Force. This
time difference of 2 seconds is necessary so that a corresponding pressure compensation can occur in the weld head
before ignition of the arc. The increased flow speeds of the Flow Force also causes turbulence, which could negatively
affect stable arc ignition.
The correct value depends on the following parameters: Pressure setting on pressure reducer, chamber size, weld head
size and pipe diameter.
If oxidation occurs near the start position on the fully welded part, the potential reduction has been reached. The oxida-
tion indicates possible uneven gas coverage at the start of welding.
"Flow Force" can be used both for the gas pre purge time and the gas post purge time.
X Determine the setting values by testing.
The Flow Force has to be activated manually.
Gas monitoring by the sensor does not occur until the end of the time of the "second gas duct", i.e.
at the start of the pressure compensation.
Using this function together with open type weld tongs has no advantage and is of no use.
The flowmeter outside the power source in the supply line has to be opened completely. Controlling
is carried out in the power source. It has to be ensured that the programmed gas quantity is also
made available.
(14.01.21) OW_ORBIMAT_300SW_BA _852060202_00_EN ORBITALUM TOOLS GMBH, D-78224 SINGEN, W W W.ORBITALUM.COM, PHONE +49 (0) 77 31 792-0 123
EnGLISH