Operating instructions BMK-20i | Heinz Soyer Bolzenschweißtechnik
21
Drawn arc stud welding technology using inert
gas
For drawn arc stud welding using inert
gas, a gas mixture is used as an aid.
The following inert gas mixtures are recommended:
82% argon and 18% CO
2
(standard inert gas)
This inert
gas shields the welding area from the atmosphere and also provides the weld
pool backup. Furthermore, it produces a welding bead shaped as a concave fillet weld
with a metallically bright surface, reducing the risk of corrosion and achieving a better
dynamic behaviour of the welding joint.
When welding using inert
gas without other aids, it is not possible to produce an exact
bead in a dimensionally stable calibrated and reproducible manner. Stud welding using
inert
gas can be carried out at much shorter intervals, as it is not necessary to insert
and remove the ceramic ferrules for each welding operation.
Functional principle
The stud touches the
workpiece.
The stud is lifted from the
workpiece. The arc is
ignited.
The stud immerses in the
welding pool. The material
solidifies and the stud is
solidly welded.
Summary of Contents for SRM EcoWeld BMK-20i
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