公开(公告)号：US20250033147A1

公开(公告)日：2025-01-30

申请号：US18716662

申请日：2022-11-16

Applicant: ArcelorMittal

Inventor： Ivan VIAUX ,  Sadok Didier GAIED ,  Jean-François CANOURGUES ,  Sylvie ROUSSILLON

IPC: B23K26/26 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

Abstract: Method for butt-welding two steel sheets including the steps of providing two steel sheets (1, 2), on all the faces having a zinc based metallic coating thickness Znth above 3.5 microns and a steel sheet substrate (12) with a Carbon content above 0.15% or a Silicon content above 0.5% or both: removing at least part of-the metallic coating to form an ablation area before welding (6) having a Zinc-based metallic coating thickness after ablation Znab which is equal to or lower than 3.5 microns and in such a way that the width of the ablation area after welding (8) is equal to or greater than 0.5 mm, butt welding the steel sheets (1, 2) using at least a laser source.