Principle Of The Metal Inert Gas Welding Procedure; Functioning Principle Of Rehm Synergic. Pro; Welding Units; Correct Use - REHM SYNERGIC.PRO2 170-2 Operating Instructions Manual

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1.2.2

Principle of the metal inert gas welding procedure

During the metal inert gas welding process, the arc burns between a melting wire
electrode and the work piece. Argon, carbon dioxide (CO
other gases are used as the inert gas.
The wire electrode is unwound from a spool by a feed motor and pushed through
the torch bundle to the contact tip.
The positive pole of the current source is attached to the current contact nozzle,
to the wire electrode and the negative pole on the work piece. An arc is formed
between the wire electrode and the work piece which melts the wire electrode
and fuses it to the work piece. The electrode is thus both arc carrier and welding
material at the same time.
The wire electrode and the pool crater are protected from the oxygen in the air by
the inert gas that is released from the nozzles which are arranged concentrically
around the electrode.
1.2.3

Functioning principle of REHM SYNERGIC. PRO

welding units

REHM inert gas metal arc welding units are MIG/MAG constant voltage sources
with the welding voltage adjusted by step switches. The wire speed is determined
automatically by the pre-selected welding voltage. A correction knob to set the
wire speed precisely is used to control the individual arc length.
Alloyed and non-alloyed steel, stainless steel and aluminium and galvanised
sheet can be welded (MIG brazing) with REHM -SYNERGIC.PRO
metal arc welding units.
These units are designed for optimum welding performance and high efficiency,
are equipped with robust housings and feature cooling systems designed for
minimum noise output. All the components have been extensively tested under
practical conditions for heavy-duty and industrial usage.
1.2.4

Correct use

REHM welding units are designed to be used to weld various metals such as
non-alloyed and alloyed steel, stainless steel and aluminium. You should also
pay attention to the special regulations pertaining to your area of application. If
anything is unclear, consult your safety officer or contact REHM's customer
service department.
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 damages caused as a result of a different type of use is the
responsibility of the operator. In the event of special requirements, it may be
necessary for additional special conditions to also be taken into account.
If anything is unclear, consult your safety officer or contact REHM's customer
service department.
Introduction
) or a mix of these or
2
2
2
inert gas