SHORT ARC AND DRAWN ARC WELDING EQUIPMENTS

The drawn arc stud welding is a process of union between a metal threaded stud on a metal surface through the use of special equipment that by the welding gun, activates an electric arc which melts the tip of the stud and the surface below creating a weld bath that is contained within a ceramic ferrule.

In the long arc cycle welding the welding stud or pin are welded by an electric discharge that melts the material and the melting bath is contained either in a ceramic ferrule or remains free cooled by an inert gas that is automatically activated inside a protective positioner placed on the gun.

In the short arc cycle welding the electric arc is generated in a time of a few ms, this results in much lower melting material than long arc cycle welding and is mainly used to weld threaded studs up to M8 on thin sheet metal.

At A.T.S. Lamberti we offer a wide range of welding machines suitable for drawn arc welding works such as welding shear connectors used in mechanical carpentry, the long cycle welding studs in shipbuilding. Normally the drawn arc welding machines that supplies A.T.S are used for processing medium-heavy carpentry instead, short cycle stud welding is mainly used in the automotive industry such as welding thin sheets or in difficult positions.

The key elements include a careful cleaning of surfaces, the choosing of the correct equipment that normally A.T.S. advises to the customer, a proper adjustment of welding parameters, and the use of certified drawn arc welding studs.