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.