Stud welding with tip ignition on mill-finished alloy honeycomb sheet surfaces
By applying a force without the use of auxiliary material, studs and pin-type parts are welded to the carrier material by means of an electricarc. Capacitor-discharge stud welding with tip ignition is suitable for alloy honeycomb sheet for sheets of a minimum thickness of 1 mm. Studs and pins are used for various types of join.
Stud diameter:
3-8mm
Material:
AIMg Alloy
Process:
1. The capacitor battery is charged.
2. A spring in the welding gun moves the stud (with tip) towards the
workpiece.
3. The tip comes into contact with the workpiece and thereby closes
the circuit. The rapidly increasing current causes the ignition tip to
melt instantaneously, thus initiating the electric arc.
4. Stud and workpiece are welded together.
5. When the stud touches the workpiece the electric arc is extinguished,
the fusion zones on stud and workpiece are joined and solidify.
Owing to the highly dynamic process, the selection of the settingparameters is particularly important. The appropriate combination ofthe mechanical properties of the spring force and the air gap and thesetting parameters of the capacity and the charging voltage is decisivefor obtaining repeatable results.
Stud welding offers the following advantages:
sealed connection
low thermal effect on stud and Alloy Honeycomb Sheet
fastening method without forming a hole, the panel is not weakened,
welding from one side without counter support
suitable for cover sheets with a minimum thickness of 1 mm
fast working cycle
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