Abstract:
A process and apparatus for welding a metal component (28) to a metal workpiece (40). The component (28) typically comprises a metal weld region (36) and a threaded connector region and the apparatus includes a weld head comprising a nozzle (8) for holding the weld region (36) of the component (28) adjacent the workpiece (40). The weld head induces a weld arc between the weld region (36) of the component (28) and the workpiece (40) to create a weld pool of molten material. The weld head subsequently moves the weld region into the weld pool to permanently join the component (28) to the workpiece (40). The apparatus further comprises a pressurised fluid source and a fluid flow control means for directing the pressurised fluid between the weld head and the component and weld pool so as to deflect any airborne fluid residue of the weld pool away from the connector region of the component (28).
Abstract:
According to the invention, a cage (1) for accommodating a cage nut (5) is welded to a body element (2) by means of positioning the two parts at a set distance from each other so that an electric arc (6) can be formed between the parts, which then act as electrodes. A front wall part (4) of the cage (1) is configured in such a way that it overhangs the side wall parts (3) and the arc (6) is only formed on said front wall part. The weld is produced by means of the softened surfaces being joined together with a slight pressure.
Abstract:
A new adjustable collet for stud welding employs a plurality of electrically energizable jaws coordinated to firmly grasp studs of various shapes, sizes and orientations while welding them to a work surface. This adjustable collet will also ensure better contact with the stud and thus reduce the likelihood of arcing and faulty welds. Premature collet wear will also be averted by reducing the amount of sliding contact between the collet and the stud.
Abstract:
A method for welding a stud (1) with a structure (2), in which said stud (1) with an edge tapering downwards in its cross section is brought into contact with the structure (2), then loaded with an electric current, said stud being then withdrawn to form an arc and finally plunged into molten metal (15).
Abstract:
Welding head (SK) comprises a front part with a holding unit (8) mechanically connected to an interface (S) using a connecting device (7). The welding current is introduced via the interface. The connecting device is divided into a first connecting piece (12) and a second connecting piece (11) which are electrically insulated from each other.