FIELD: mechanical engineering; reconditioning of solids of revolution by resistance surfacing. SUBSTANCE: seam welder has base with two tong holds. The latter are interconnected by compression drive and are hinge connected with screw adjuster. Welding heads 7 with roller electrodes 10 are installed on long holds for turning on axles 8. Mechanism holding welding heads from turning is made in form of tie-rods 13, 14 interconnected by hinge joint 15. Free ends of tie-rods are connected through insulating gaskets 16 on welding heads at side opposite to roller electrode. EFFECT: increased rigidity of structure and improved quality of welding. 4 dwg
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