The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2024
Filed:
Nov. 26, 2018
Arcelormittal, Luxembourg, LU;
ARCELORMITTAL, Luxembourg, LU;
Abstract
A method for producing a welded blank () includes providing two precoated sheets (), butt welding the precoated sheets () using a filler wire. The precoating () entirely covers at least one face () of each sheet () at the time of butt welding. The filler wire () has a carbon content between 0.01 wt. % and 0.45 wt. %. The composition of the filler wire () and the proportion of filler wire () added to the weld pool is chosen such that the weld joint () has (a) a quenching factor FT: FT−0.9FT≥0, where FTis a quenching factor of the least hardenable substrate (), and FTand FTare determined: FT=128+1553×C+55×Mn+267×Si+49×Ni+5×Cr−79×Al−2×Ni−1532×C−5×Mn−127×Si−40×C×Ni−4×Ni×Mn, and (b) a carbon content C<0.15 wt. % or, if C≥0.15 wt. %, a softening factor FAsuch that FA>5000, where FA=10291+4384.1×Mo+3676.9Si−522.64×Al−2221.2×Cr−118.11×Ni−1565.1×C−246.67×Mn.