Abstract: A welding device for welding a stud to a substrate along a welding axis in a welding direction, comprising an inert gas cover with a welding chamber and a holding device holding the stud within the welding chamber during welding, wherein the cover has an input channel, a distribution chamber, a multiplicity of first connecting channels and an inert gas inlet into the welding chamber, wherein an inert gas feed line can be connected to the input channel, the input channel opening into the distribution chamber, the first connecting channels opening into the distribution chamber at different distances from the input channel, the first connecting channels connecting the distribution chamber pneumatically to the inert gas outlet, and wherein a common cross-sectional area of the first connecting channels is all the greater, the greater the distance from the input channel at which the first connecting channels open into the distribution chamber.

Abstract: A method of attaching a line to a support structure includes providing a holder having a fastening section, a side-part section, a closure section, and an engagement section, where the fastening section, the side-part section, and the engagement section define a ring having a gap. The method further includes fastening the fastening section to the support structure, bending the side-part section with respect to the fastening section after the fastening section has been fastened to the support structure, inserting the line through the gap into the ring, and bending the closure section with respect to at least one of the fastening section, the side-part section, and the engagement section such that the closure section engages the engagement section and closes the gap.

Abstract: A fastening element is provided, comprising a shank, which defines a driving-in direction, the shank having a front end, facing in the driving-in direction, and a rear end, facing counter to the driving-in direction, the shank having a periphery having a profile ridge that is inclined in relation to the driving-in direction at an acute angle. According to one aspect, the profile ridge has a front flank, facing in the fastening direction, and a rear flank, facing counter to the fastening direction, the front flank having a greater area content than the rear flank. According to a further aspect, the fastening element has a tip region, which has a convex portion.

Abstract: A method of attaching a line to a support structure comprises providing a holder 100, fastening the holder to the support structure, inserting the line into the holder, and bending the holder such that the holder is closed.