The invention relates to a device for welding welding paths (S), comprising: a wedge-shaped lifting device (1) for lifting a welding path (S) rolled out on a substrate, a heating device for heating a lower side of the lifted welding path (S) and a pressing device ( 13) for pressing the heated underside to an extended on the ground further welding path. To improve the quality of welding, the invention proposes that the heating device comprises a surface burner (3) in which a fuel gas mixture formed from air and gas is distributed in a porous plate (25) and subsequently in the plate (25) or on a surface of the plate (25) is burned, so that heat generated with it is decoupled over the entire surface.
展开▼
