Description of the BMK-8i ACCU stud welding device
26 Operating Instructions Soyer Bolzenschweißtechnik
7.2.2 Drawn arc stud welding technology using shielding gas
For drawn arc stud welding using shielding gas, a mixed gas with 82% argon and,
for example, 18% CO
2
(e.g. Corgon®18*) is used as an aid.
This shielding gas shields the welding point from the atmosphere and also per-
forms the weld pool backing. Furthermore, it produces a welding bead shaped as
a concave fillet weld with a metallically bright surface, reducing the risk of corro-
sion and achieving a better dynamic behaviour of the welding joint.
When welding using shielding gas without other aids, it is not possible to produce
an exact bead in a dimensionally stable calibrated and reproducible manner. Stud
welding using shielding gas can be carried out at much shorter intervals, as it is
not necessary to insert and remove the ceramic rings for each welding operation.
*) Corgon®18 is a gas mixture of Linde AG in D-82049 Höllriegelskreuth
For more information on this subject, please visit: www.soyer.com.
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