Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
WARNING
♦ Always use an extraction system when performing weld‐
ing and grinding work.
♦ Welding and grinding must never be performed simulta‐
neously in the same working area.
♦ Working area must be cleaned at regular intervals as nec‐
essary to remove dust.
♦ Compressed air must NOT be used to blow out dust de‐
posits.
♦ The extraction system must be cleaned at regular inter‐
vals.
♦ In addition, the relevant accident prevention and industrial
safety regulations must be observed.
6.4 MIG soldering/brazing
MIG soldering/brazing differs essentially from SG stitch welding
or continuous welding in terms of the significantly lower temper‐
atures required. The advantage of MIG soldering/brazing is the
significantly reduced amount of material distortion in the compo‐
nents which are being joined. This technique is therefore also
suitable for joining larger flat components.
Further advantages are:
♦ Fewer changes to the structure of the components
♦ Less damage to the corrosion protection provided as standard
♦ Zinc layer on components remains intact
What is MIG soldering/brazing? (not approved for AUDI AG ve‐
hicles)
♦ It is a soldering/brazing technique also known as gas metal
arc welding.
♦ The basic material (vehicle body panels) is not fused together;
the brazing solder coats the edges and joins the components.
♦ MIG stands for metal inert gas. The inert gases are not in‐
volved actively in the processes between the arc and the filler
material.
♦ The shielding gases used include argon or helium, mixed with
carbon dioxide or oxygen.
♦ Up to 450 °C: soldering
♦ Above 450 °C: brazing
Equipment
Only equipment which is listed as approved in the workshop
equipment catalogue may be used.
General InformationBody Repairs, General Body Repairs - Edition 04.2018
26 6. Thermal joining techniques
To Next Page
Loading...
