Précédent
Suivant
Brevet : EP2567776 - JOINT SOUDÉ EXTRÊMEMENT RÉSISTANT ET SON PROCÉDÉ DE PRODUCTION
Titre
JOINT SOUDÉ EXTRÊMEMENT RÉSISTANT ET SON PROCÉDÉ DE PRODUCTION
N° et date de publication de la demande
EP2567776 - 13/03/2013
Type de la demande
A1
N° et date de dépôt
EP11792577.6 - 06/06/2011
N° et date de priorité
JP2010130415 - 07/06/2010
Classification CIB
B23K 35/30 ; B23K 9/16 ; B23K 9/173 ; B23K 9/23 ; B23K 26/20 ; B23K 26/21 ; B23K 26/346 ; C22C 38/00 ; C22C 38/58
Classification CPC
B23K 35/0255 ; B23K 35/0261 ; B23K 35/0266 ; B23K 35/3066 ; B23K 35/3073 ; C21D2211/008 ; C22C 38/001 ; C22C 38/002 ; C22C 38/02 ; C22C 38/04 ; C22C 38/06 ; C22C 38/08 ; C22C 38/12 ; C22C 38/14 ; C22C 38/16 ; C22C 38/18 ; C22C 38/38 ; C22C 38/50 ; C22C 38/58 ; C22C 38/42 ; C22C 38/44 ; C22C 38/46 ; C22C 38/48 ; C22C 38/54 ; B23K 26/32 ; B23K 26/348 ; B23K2101/18 ; B23K2101/24 ; B23K2101/28 ; B23K2103/04 ; B23K2103/50 ; Y10T 428/12771 ; B23K 35/30 ; C22C 38/58 ; B23K 9/16 ; B23K 26/20 ; B23K 26/14 ; Y10T 428/12771 ; B23K 26/32 ; C22C 38/58 ; C22C 38/12 ; C22C 38/14 ; C22C 38/18 ; C22C 38/02 ; C22C 38/08 ; C21D2211/008 ; C22C 38/06 ; C22C 38/04 ; B23K 35/0266 ; C22C 38/001 ; C22C 38/002 ; C22C 38/16 ; C22C 38/38 ; B23K 35/0261 ; B23K 35/3073 ; B23K 35/3066 ; C22C 38/50 ; B23K 35/0255 ; C22C 38/44 ; C22C 38/46 ; C22C 38/48 ; C22C 38/42 ; C22C 38/54 ; B23K2103/04 ; B23K2101/18 ; B23K2101/24 ; B23K2103/50 ; B23K 26/348 ; B23K2101/28
Famille de brevets
JPWO2011155620A1 ; EP2567776A1 ; WO2011155620A1 ; KR20120099534A ; US2013078031A1 ; CN102753300A
Abrégé
An ultrahigh-strength welded joint with superior strength and toughness, and a method for producing the ultrahigh-strength welded joint by means of single-pass welding by using laser hybrid welding, are provided, wherein the welded joint comprising a steel plate having a plate thickness of 4 mm to 12 mm and including weld metal of almost full martensite structure, wherein, in a cross-section of the welded joint in a direction perpendicular to a welding direction, a cross-sectional shape of the weld metal has a width W1 of 2.0 to 7.0 mm at a surface of the steel plate and a width W2 of 0.5 to 2.4 mm at a position where is separated from the surface by three-quarters of the plate thickness, wherein the weld metal comprises, by mass%, C: over 0.09% to 0.24%; Si: 0.2% to 1.0%; Mn: 0.5% to 2.5%; P: 0.02% or less; S: 0.02% or less; Al: 0.004% to 0.08%; Ti: 0.005% to 0.15%; O: 0.005% to 0.05%; and Ni: 1.0% to 9%, and wherein a carbon equivalent (Ceq) is 0.40% to 1.00%, a value Y as defined by equation (([Si]+[Mn])/40 + [Al] + [Ti]) is 0.07% to 0.20%.
INTERVENANTS
Déposant
NIPPON STEEL & SUMITOMO METAL CORPORATION - 6-1, MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 100-8071 - JP
Titulaire
NIPPON STEEL & SUMITOMO METAL CORPORATION - 6-1, MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 100-8071 - JP
Inventeur
NAKAMURA, SHUICHI TOKYO 100-8071 - JP
KOJIMA, KAZUHIRO TOKYO 100-8071 - JP
Mandataire
VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB - SIEBERTSTRASSE 3 81675 MUNCHEN - DE
STATUT EN FRANCE : Dossier déchu définitivement
Délivrance
21/01/2015
Date de constatation de déchéance
-
29/02/2016 (BOPI 2016-13)
