公开(公告)号：EP2222432B1

公开(公告)日：2011-04-13

申请号：EP08846972.1

申请日：2008-11-10

Applicant: Amr Engineering As

Inventor： MOE, Per Thomas ,  HALMRAST, Bjørn ,  RABBEN, Kjell Magne

IPC: B23K11/093 ,  B23K13/01 ,  B23K20/00 ,  B23K20/02 ,  B23K20/14

CPC classification number: B23K11/0935 ,  B23K13/01 ,  B23K20/008 ,  B23K20/02 ,  B23K20/14 ,  B23K2201/06

Abstract: The present application relates to an apparatus for and a method of forge welding elongate articles (1, 2), such as tubes, together. In addition to electrode (12, 13) assemblies(9)for heating the article (1, 2) ends with high frequency resistive heating, the apparatus includes a coil (3) for induction heating the articles (1, 2) before or after welding, as well as means for cooling the welding seam.

公开(公告)号：EP2222434A1

公开(公告)日：2010-09-01

申请号：EP08856901.7

申请日：2008-11-10

Applicant: Amr Engineering As

Inventor： MOE, Per Thomas

IPC: B23K33/00

CPC classification number: B23K13/015 ,  B23K2201/04

Abstract: The present invention concerns a method for forge welding of tubes, rods, bolts or other axial symmetrical profiles. According to the methods the profile ends are formed by plastic deformation and/or machine cutting processes, such that they obtain a reduced cross section/thickness, the profile ends are locally heated electromagnetically by induction and/or direct high frequency resistance heating and profile ends are then pressed together. The forming step comprises given one of the profile ends a double arched shape. Preferably the other profile end is given a convex shape.

公开(公告)号：EP2222432A1

公开(公告)日：2010-09-01

申请号：EP08846972.1

申请日：2008-11-10

Applicant: Amr Engineering As

Inventor： MOE, Per Thomas ,  HALMRAST, Bjørn ,  RABBEN, Kjell Magne

IPC: B23K11/093 ,  B23K13/01 ,  B23K20/00 ,  B23K20/02 ,  B23K20/14

CPC classification number: B23K11/0935 ,  B23K13/01 ,  B23K20/008 ,  B23K20/02 ,  B23K20/14 ,  B23K2201/06

Abstract: The present application relates to an apparatus for and a method of forge welding elongate articles (1, 2), such as tubes, together. In addition to electrode (12, 13) assemblies(9)for heating the article (1, 2) ends with high frequency resistive heating, the apparatus includes a coil (3) for induction heating the articles (1, 2) before or after welding, as well as means for cooling the welding seam.