Intig Energy For Electrode Welding; Tig Welding; Principle Of The Tig Welding Process; Ignition Of The Arc With Intig Energy - REHM BOOSTER.PRO 170 Instrucciones De Servicio

6.7.4

INTIG Energy for electrode welding

For electrode welding, the INTIG Energy (Intelligent Ignition Energy)
function always sets the excess ignition increase required. The
processor control system monitors the process, ensuring fast reactions,
and provides the energy required for soft, safe ignition. Sticking is
prevented even during re-ignition with bare (e.g. basic) electrodes as the
energy input is only increased following contact with the workpiece,
when the electrode is lifted off (similar to the Lift-Arc function for TIG
welding).
6.8

TIG Welding

6.8.1

Principle of the TIG welding process

For TIG welding, the unit provides a current of up to 170 A for
BOOSTER.PRO 170 and up to 210 A for BOOSTER.PRO 210. The
mains current limiting function is not active during TIG welding. Despite
the high current, the power required is lower than for electrode welding;
the fuse is therefore unlikely to be tripped.
In TIG welding, an arc is established between a tungsten electrode and
the workpiece. The shielding gas is an inert gas such as argon or helium
or a mixture of these which is supplied by a valve integrated in the torch.
The BOOSTER.PRO 170 with gas management allows the user to
control shielding gas supply via the torch (see Section 6.2.3).
The negative pole of the power supply is on the tungsten electrode, the
positive pole is on the workpiece. The electrode is the conductor and the
arc carrier (non-consumable electrode). The filler metal is provided
either manually in the form of a rod or by a separate cold wire supply
unit. The tungsten electrode, the molten metal and the molten end of the
filler metal are shielded off from atmospheric oxygen by an inert
shielding gas supplied from a shielding gas nozzle arranged
concentrically around the electrode.
As suitable torches, we recommend for the BOOSTER.PRO 170 WP
17V/4m with integrated gas valve (Order No. 763 1746) and for the
BOOSTER.PRO 210 WP26V/4 (Order No. 763 2674).
6.8.2

Ignition of the arc with INTIG Energy

With INTIG Energy (Intelligent Ignition Energy), the BOOSTER.PRO is
equipped for intelligent ignition energy control. The processor control
system ensures optimum control of the ignition process as a function of
the welding current selected with lift-arc ignition.
To ignite the arc, the electrode must be applied to the workpiece and the
torch button must be pressed. The processor control system reduces the
welding current so that the electrode does not burn out. When the
electrode is lifted off the workpiece, the arc ignites under the control of
the system without any wear on the tapered electrode.
GB
14