公开(公告)号：DE59707582D1

公开(公告)日：2002-08-01

申请号：DE59707582

申请日：1997-03-14

Applicant: ELPATRONIC AG BERGDIETIKON

Inventor： OBERHOLZER MARCEL ,  SCHUPPISSER HERMANN ,  GEHRIG URS ,  WEBER MARKUS

IPC: B23K11/08 ,  B21D5/12 ,  B23K11/06 ,  B23K37/00

Abstract: The method concerns welding of hollow cylindrical bodies (in particular, tins) according to which the bodies, before reaching the welding position, run through a guide tool (1) provided with several rolls. At least one of the rolls (3, 4, 5, 8) is a driven roll. Also claimed is an apparatus for implementation of the proposed method.

公开(公告)号：DE59410124D1

公开(公告)日：2002-07-04

申请号：DE59410124

申请日：1994-11-02

Applicant: ELPATRONIC AG BERGDIETIKON

Inventor： BAESSLER PETER ,  MAURER URS ,  MARRIOTT ALAN ,  OBERHOLZER MARCEL

IPC: B23K9/235 ,  B23K11/06 ,  B23K11/08 ,  B23K11/34 ,  B23K13/02 ,  B23K26/00 ,  B23K26/20 ,  B23K31/00 ,  B23K37/04 ,  B23K37/053 ,  H05B6/62 ,  H05B6/80

Abstract: Owing to the fact that sheet edges (3.1, 3.2) to be welded according to the invention are preheated before they are welded, a smaller temperature gradient arises in the material to be welded at the same welding speed during the welding. Consequently, the welding speed can be increased or material which gives poor welding quality at a high temperature gradient can be welded. The preheating is realised, for example, by excitation of the material to be welded at a high frequency.