Stud welding process and the bolt-welding device, in particular for stud welding without support foot, as well as computer program for this purpose,

摘要

Stud welding process, in particular for stud welding without support foot, for the welding of a in a stud holder (15) of a stud welding head (3) to be welded, which are held in the part (19) with a workpiece (17), wherein the stud holder has an electrically insulating end face, characterized by the following steps:a) movement of the stud holder 7 (15) in the direction of the workpiece surface with simultaneous monitoring of a mechanical contact between the end face of the stud holder 7 (15) or the end face of a to be welded, which is held in the stud holder part (19) and the surface of the work piece and simultaneous monitoring of electrical contact between the end face of a to be welded, which is held in the stud holder part (19) and the workpiece (17); wherein the movement of at least as long as is continued until an electrical or mechanical contact is detected,b) for the case that only a mechanical contact is detected:i) of the single mechanical contact interpreted as a state in which no to be welded portion (19) in the stud holder (15) is held,ii) lifting of the stud holder 7..