BMK-8 U / BMK-12 W
39
Set gas flow rate to a value between 4 and 5 l/min. If the value is too high, the arc is
extinguished, if the value is too low, the protective function of the gas is reduced.
Welding results are poor in both cases.
• Insert a stud into the welding gun or welding head.
DANGER
Never touch stud or stud holder during the welding process. These components are
current-carrying.
• Position welding gun or welding head vertically on the workpiece when welding.
• Press the trigger.
• When welding with shielding gas, the welding point is rinsed during the welding process as well as
before and after welding for the period adjusted.
The LED "Gas valve open" indicates that the gas valve is activated.
The LED "Final contact" indicates that the welding process is completed.
6.5
Welding operation with ceramic ferrules
The measures mentioned in the "Start-up of stud welder" chapter have already
been performed.
1
Foot plate
2
Ceramic ferrule
3
Welding stud
Illustration: Stud welding with ceramic ferrule
Welding operation with ceramic ferrules is only possible when using SOYER drawn arc
welding studs, types PD, MD, RD, UD and SD, similar to DIN EN ISO 13 918.
6.5.1
Instructions for welding with ceramic ferrules
• Start the stud welder as described in chapter 5.
• Only use ceramic ferrules which are absolutely dry and do not show any flaws.
• Only use ceramic ferrules which match the type and size of the studs.
• Start by carrying out test welds in order to achieve optimum welding results. If necessary, modify the
prescribed welding parameters.
• Insert stud into stud holder until stop.
• Make sure stud is centred in the ceramic ferrule holder.
• Place ceramic ferrule on ceramic ferrule holder.
• Position the welding gun in such a way that the centre of the stud points exactly toward the marked
welding point.