Patents Assigned to Alliages Frittes S.A.
  • Method for butt-welding cylindrical metallic rods
    Patent number: 4129771
    Abstract: The disclosure relates to a method and a device for butt-welding rotational cylindrical metallic rods without filler metal and without forming a rim or deformation in the welded area. The method consists of bringing the two ends coaxially to be welded into contact proximity without compression and applying welding power while simultaneously rotating the two rods in relation to the welding heat source around their common rotational axis to an extent of more than one complete revolution.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: December 12, 1978
    Assignee: Alliages Frittes S.A.
    Inventors: Jacques Pinettes, Jean Chaix