Moore Fastening Systems, Inc.  
Porta Stud
Arc Stud Welding
CD Stud Welding
About us

Capacitor Discharge Stud Welding is a semi-automatic arc welding process that, in general, is used to attach small diameter studs to thin gauge material.

This CD process operates on the principal of electrical energy stored in a bank of capacitors that is instantaneously discharged by the power/control equipment, through a special weld timing tip that is vaporized, creating an arc.  This allows the stud to melt and under spring pressure is plunged into a molten puddle of parent material.  The entire process takes place in just a few milliseconds, thereby allowing the fastener to be welded to thin sheet without pronounced distortion, burn-through or discoloration.