Principle Of The Tig Inert Gas Welding Procedure; Areas Of Application Of The Tig Welding Units; Functional Principle Of The Tig Welding Units; Correct Use - REHM INVERTIG.PRO COMPACT 240 DC Betriebsanleitung

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1.2.1

Principle of the TIG inert gas welding procedure

When TIG welding, the arc burns freely between a tungsten electrode and the
work piece. The shielding gas used is an inert gas like Argon, Helium or a mix of
these.
One pole of the energy source is at the tungsten electrode, the other on the work
piece. The electrode is the conductor and the arc carrier (permanent electrode).
The additional material is introduced in stick format by hand, or in wire format
using a separate cold wire feed unit. The tungsten electrode and the pool crater
as well as the liquid melting end of the additional materials are all protected from
the oxygen in the air by the inert gas employed which is released from the
nozzles arranged concentrically around the electrode.
1.2.2

Areas of application of the TIG welding units

INVERTIG.PRO COMPACT DC welding units are direct current power sources.
They are suitable for welding all alloyed and non-alloyed steels, stainless steels
and non-ferrous metals.
INVERTIG.PRO COMPACT AC/DC welding units are both direct and alternating
current sources. They can be used to process all alloyed and non-alloyed steels,
stainless steels, non-ferrous metals, aluminium and aluminium alloys.
1.2.3

Functional principle of the TIG welding units

Our TIG INVERTIG.PRO COMPACT welding units are primary-clocked power
sources in which the welding current is switched by one of the most modern high-
performance transistor switches. The On/Off switch relationship of the high-
performance transistor switch regulates the set welding current. In conjunction
with the high switching frequency of 100 kHz this generates an extreme stable
and quiet arc. A precise processor controller guarantees constant welding current
even when the distance between the torch and the work piece changes or the
power supply fluctuates. The INVERTIG.PRO COMPACT units have the
frequency automation developed by REHM which ensures for optimum
adaptation of the welding current frequency of the welding current when using
alternating current.
The use of the most modern transistor switching technology means that these
power sources are extremely effective.
1.2.4

Correct use

REHM welding machines are designed for welding of different metallic materials
such as non-alloyed and alloyed steels, stainless steels, copper, titanium and
aluminium. You should also pay attention to the special regulations pertaining to
your area of application.
REHM welding units are designed for use with hand-controlled and machine-
controlled operations.
REHM welding units are, unless explicitly permitted in writing by REHM; only for
sale to commercial and industrial users and only for use by such. They may only
be operated by persons trained in the use and maintenance of welding units.
Welding current sources may not be set up in areas with increased electrical risk.
These operating instructions contain rules and guidelines for the correct use of
your unit. Only when these are adhered to can it be described as correct use.
Risks and damaged caused as a result of a different type of use is the
Introduction