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.

公开(公告)号：US20250033146A1

公开(公告)日：2025-01-30

申请号：US18716639

申请日：2022-11-22

Applicant: ArcelorMittal

Inventor： Jean-François CANOURGUES ,  Sadok Didier GAIED

IPC: B23K26/211 ,  B23K26/26 ,  B23K26/32 ,  B23K103/04 ,  B23K103/10

Abstract: Method for butt-welding two steel sheets comprising the steps of providing two steel sheets having a composition such that the gamma factor of the unamended targeted weld seam composition is strictly higher than 0.39, butt to butt laser welding them with additional material incorporated in the weld such that the gamma factor of the amended targeted weld seam composition is equal to or lower than 0.39, wherein Gamma=C+Si/30+Mn/20+4.8*P+4*S-Al/20,