A METHOD OF ATTACHING A FIBROUS INSULATION PANEL TO A METAL STRUCTURE AND A STUD WELDING SYSTEM FOR THIS

摘要

The invention concerns a method of attaching at least one fibrous insulation sheet panel onto a metal structure having a surface covering top layer, whereby a number of studs are placed through the sheet material and welded onto the metal structure by using a stud-welding system in which the stud is positioned in a stud-welding gun, said method comprising the steps of penetrating a stud including a hardened steel pin through the sheet material, providing an electrical contact between the stud and the underlying metal structure by penetrating the distal end of the stud pin through the top layer of the metal structure, and then applying a welding current to the stud, retracting the stud providing a gap between the stud and the metal structure and establishing a welding arc, and forcing the stud against the metal structure after a predetermined duration of time.