METHOD OF RESISTANCE BUTT-WELDING OF PIPES WITH PLUGS Russian patent published in 2007 - IPC B23K11/02 G21C21/02 

FIELD: mechanical engineering; welding nuclear engineering.

SUBSTANCE: invention relates to methods of resistance butt welding for sealing of jackets of fuel elements of nuclear reactors and in process of manufacture of clusters of fuel elements. Method comes to compressing pipe and plug by welding force directed along axis of pipe and plug, heating them by electric current with subsequent welding-in with deepening of plug into pipe. Diameter of plug on section of formation of weld seam is greater than inner diameter of pipe, but is smaller than outer diameter of pipe. Welding current and force is applied to plug in different cross sections. Surface to apply welding current is arranged parallel to axis of plug and at angle of 90° to surface for application of welding force between said surface and part of plug welding into pipe.

EFFECT: provision of multipurposeness of method, improved quality of welding and service and technological characteristics of article.

2 dwg