Patents Assigned to Tubefuse Applications B.V.
  • Forge welding tubulars
    Patent number: 7774917
    Abstract: Tubular ends are heated to a predetermined temperature above 1200 degrees Celsius and surrounded by a shield gas when the tubular ends are pressed together to form forge welded tubular ends. The forge welded tubular ends are then cooled down rapidly from said temperature above 1200 to at most 600 degrees Celsius within 3 minutes after the forge welding operation.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: August 17, 2010
    Assignee: Tubefuse Applications B.V.
    Inventors: Mark Wilson Anderson, Johannis Josephus Den Boer, Anthony Thomas Cole, Klisthenis Dimitriadis, Jan Erik Vollebregt, Djurre Hans Zijsling