Seam welding machine and protection of the welding electrodes

摘要

The seam welding machine incorporates a holding element (6) which is moves orthogonally to the feed direction of the materials (1a, 2a) to be joined, and is provided with a pair of rotatable disk-shaped welding electrodes (8a, 8b). The machine further includes an applicator system (21, 21b) for delivery of an electrode protection medium (29) onto the rotating surfaces of the welding electrodes. The applicator system is in direct contact with the welding electrodes, and is supplied with the electrode protection medium by supply units (30a, 30b; 31a, 31b). Also claimed is a method for protecting the welding electrodes of such welding machine.