A method for producing a welded blank (1) includes providing two precoated sheets (2), butt welding the precoated sheets (2) using a filler wire. The precoating (5) entirely covers at least one face (4) of each sheet (2) at the time of butt welding. The filler wire (20) has a carbon content between 0.01 wt. % and 0.45 wt. %. The composition of the filler wire (20) and the proportion of filler wire (20) added to the weld pool is chosen such that the weld joint (22) has (a) a quenching factor FTWJ: FTWJ−0.9FTBM≥0, where FTBM is a quenching factor of the least hardenable substrate (3), and FTWJ and FTBM are determined: FT=128+1553×C+55×Mn+267×Si+49×Ni+5×Cr−79×Al−2×Ni2−1532×C2−5×Mn2−127×Si2−40×C×Ni−4×Ni×Mn, and (b) a carbon content CWJ<0.15 wt. % or, if CWJ≥0.15 wt. %, a softening factor FAWJ such that FAWJ>5000, where FA=10291+4384.1×Mo+3676.9Si−522.64×Al−2221.2×Cr−118.11×Ni−1565.1×C−246.67×Mn.


    Access

    Download


    Export, share and cite



    Title :

    METHOD FOR PRODUCING A WELDED STEEL BLANK AND ASSOCIATED WELDED BLANK


    Contributors:

    Publication date :

    2020-11-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    C22C Legierungen , ALLOYS / B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / B62D MOTOR VEHICLES , Motorfahrzeuge / B23K Löten , SOLDERING OR UNSOLDERING



    Method for producing a welded steel blank and associated welded blank

    ALVAREZ CRISTIAN / LIZON THIERRY / POIRIER MARIA | European Patent Office | 2025

    Free access

    Method for producing a welded steel blank and associated welded blank

    ALVAREZ CRISTIAN / LIZON THIERRY / POIRIER MARIA | European Patent Office | 2024

    Free access

    METHOD FOR PRODUCING A WELDED STEEL BLANK AND ASSOCIATED WELDED BLANK

    ALVAREZ CRISTIAN / LIZON THIERRY / POIRIER MARIA | European Patent Office | 2023

    Free access


    STEEL TAILOR WELDED BLANK STAMPED BATTERY TRAY

    ZHU FENG / YU MIAO / NAZARI SOBHAN T et al. | European Patent Office | 2024

    Free access