Brevet : EP3031570 - FLUX DE SOUDAGE À L'ARC SOUS FLUX EN POUDRE
Titre
FLUX DE SOUDAGE À L'ARC SOUS FLUX EN POUDRE
N° et date de publication de la demande
EP3031570 - 15/06/2016
Type de la demande
A1
N° et date de dépôt
EP14834620.8 - 27/05/2014
N° et date de priorité
JP2013162116 - 05/08/2013
Classification CIB
B23K 35/362 ; B23K 9/18 ; B23K 35/02 ; B23K 35/30 ; B23K 35/36 ; C22C 38/00 ; C22C 38/04
Classification CPC
B23K 35/30 ; B23K 35/3602 ; B23K 35/3605 ; B23K 35/3607 ; B23K 35/3608 ; B23K 35/361 ; B23K 35/0255 ; B23K 35/0244 ; B23K 35/362 ; B23K 35/30 ; B23K 35/3602 ; B23K 35/3605 ; B23K 35/3607 ; B23K 35/3608 ; B23K 35/361 ; B23K 35/0255 ; B23K 35/0244 ; B23K 35/362 ; B23K 9/186
Famille de brevets
EP3031570A1 ; CA2919614A1 ; MY182638A ; US2016175993A1 ; WO2015019684A1 ; CN105408054A ; JP2015030019A ; KR20160025628A
Abrégé
Provided is a flux for submerged arc welding that has good welding workability and can reduce the diffusion hydrogen content in a weld metal in the use of either an AC or a DC welding power source. The flux for submerged arc welding includes Al 2 O 3 : 15 to 35% by mass; SiO 2 : 10 to 30% by mass; MgO: 10 to 25% by mass; F (in terms of CaF 2 ): 10 to 25% by mass; Mn (in terms of MnO): 3 to 20% by mass; Na (in terms of Na 2 O) and/or K (in terms of K 2 O) : 0.5 to 4.5% by mass in total; and Fe (in terms of FeO): 0.5 to 8% by mass, in which a CaO content is restricted to 6% by mass or less, a water-soluble SiO 2 is restricted to less than 1% by mass, and the flux has a composition that satisfies the following formula (I):0.2¤[MgO ([Al 2 O 3 ]/+[MnO])¤0.8(I).
INTERVENANTS
Déposant
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) - 2-4, WAKINOHAMA-KAIGANDORI 2-CHOME CHUO-KU KOBE-SHI, HYOGO 651-8585 - JP
Titulaire
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) - 2-4, Wakinohama-Kaigandori 2-chome Chuo-ku Kobe-shi, Hyogo 651-8585 - JP
Inventeur
KANO, Satoru Fujisawa-shi, Kanagawa 251-8551 - JP
OTA, Makoto Fujisawa-shi, Kanagawa 251-8551 - JP
Mandataire
Müller-Boré & Partner Patentanwälte PartG mbB - Friedenheimer Brücke 21 80639 München - DE
STATUT EN FRANCE : Déchu
Délivrance
17/06/2020
Date de constatation de déchéance
-
05/01/2022 (BOPI 2022-06)
Date de paiement de la prochaine annuité
31/05/2021