Stumpfschweissverfahren

Details

Veröffentlichungs-Nr.

EP4732986

Anmeldetag

20. September 2024

Veröffentlichung

3. April 2025

Rechtsraum

EP

IPC

B23K26/21, B23K26/342

Abstract

Provided is a butt welding method capable of, even if weld metal is soft as in the case of a welded portion formed when a high-Ni austenitic or low-carbon ferritic filler wire is used, strengthening the weld metal and preventing fracture at the welded portion during sheet passage through a continuous processing line. Upon butting a trailing end of a preceding steel sheet and a leading end of a succeeding steel sheet at an entry side of the processing line and pressing a solidified welded portion at a butted portion, an excess weld metal height h [mm] of the welded portion satisfies h > 0, and a reduction ratio during the pressing is controlled to satisfy 0 ≤ H<w> - H<1> < 100, where H<w> is hardness of the welded portion after the pressing and H<1> is base metal hardness of a lower-hardness steel sheet among the butted steel sheets.

Anmelder

Firma

JFE Steel Corporation

Land

🇯🇵 Japan

Fachgebiete