Within the framework of training measures and procedure qualification tests according to DIN EN ISO 14555, operators and welding coordinators can obtain qualifications in the field of stud welding (arc stud welding and friction stud welding).
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Pin-shaped metallic components with diameters up to approx. 25 mm are fastened on base sheets vertically by means of stud welding. Different procedure variants are available for the most diverse applications.
In the case of arc stud welding, an arc burns between the front face of the stud and the workpiece for a short time and partially melts the joining members (stud and sheet). After sufficient partial melting, the molten pools are connected with each other by the stud movement towards the sheet.
Depending on the procedure variant, the stud welding industry offers suitable power sources, movement jigs, studs and additional auxiliary materials (e.g. ceramic ferrules). The handling is comparatively simple but a large number of welding and boundary conditions must be coordinated in practice for successful and safe fabrication.
In our laboratory rooms, we have at our disposal stud welding installations for the drawn arc and initial contact procedures as well as for the friction stud welding of various designs and sizes.
In this respect, the performance range of the installations extends from thin pins (approx. 2 mm) to massive head studs (approx. 25 mm).
The field is looked after by three people (two engineers and one technologist).