device for welding thin plates under a fixed water-cooled schweisskopf durchlaufender

摘要

The appts. for welding under a protective gas thin sheet metal moving along beneath a fixed water-cooled welding head incorporates one or more non-melting electrodes held by electron clamps which, in turn, are held by a clamp holder in the housing of the welding torch. The appts. is characterised by the following facts: (a) a tubular clamping element (7) is located in a central bore of the clamp holder (3); and (b) the free end of the element (3) is slit to provide a clamping seat for the electrode (20). Protective gas is delivered into the annular gap (8), which has at least one ring seal (13, 14), between the holder (3) and the clamping element (8). The clamping element is provided with a handle (9). IMAGE