Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. AU2019448393 - Method for enhancing strength and toughness of welded joint formed on Q890DQP steel

Office
Australie
Numéro de la demande 2019448393
Date de la demande 04.12.2019
Numéro de publication 2019448393
Date de publication 03.12.2020
Type de publication A1
CIB
B23K 31/00
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
23MACHINES-OUTILS; TRAVAIL DES MÉTAUX NON PRÉVU AILLEURS
KBRASAGE OU DÉBRASAGE; SOUDAGE; REVÊTEMENT OU PLACAGE PAR BRASAGE OU SOUDAGE; DÉCOUPAGE PAR CHAUFFAGE LOCALISÉ, p.ex. DÉCOUPAGE AU CHALUMEAU; TRAVAIL PAR RAYON LASER
31Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux B23K1/-B23K28/211
B23K 9/16
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
23MACHINES-OUTILS; TRAVAIL DES MÉTAUX NON PRÉVU AILLEURS
KBRASAGE OU DÉBRASAGE; SOUDAGE; REVÊTEMENT OU PLACAGE PAR BRASAGE OU SOUDAGE; DÉCOUPAGE PAR CHAUFFAGE LOCALISÉ, p.ex. DÉCOUPAGE AU CHALUMEAU; TRAVAIL PAR RAYON LASER
9Soudage ou découpage à l'arc
16utilisant des gaz de protection
CPC
B23K 35/3053
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
35Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
22characterised by the composition or nature of the material
24Selection of soldering or welding materials proper
30with the principal constituent melting at less than 1550 degrees C
3053Fe as the principal constituent
B23K 31/02
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
31Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
02relating to soldering or welding
B23K 37/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
37Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Déposants Nanjing Iron & Steel Co., Ltd.
Inventeurs LI, Song
LUO, ChuanZhong
PENG, SiYuan
WANG, JingJie
Mandataires A.P.T. Patent and Trade Mark Attorneys
Données relatives à la priorité 201910443541.4 24.05.2019 CN
Titre
(EN) Method for enhancing strength and toughness of welded joint formed on Q890DQP steel
Abrégé
(EN) A method for enhancing the strength and toughness of a welded joint formed on Q890DQP steel comprises: placing an under-matched 50 kg welding wire at the root of a weld seam, and performing welding with an even-matched 90 kg welding wire serving as a filler for the weld seam and a material for a cap; using a mixed gas containing Ar+20% CO 2 and performing gas shielded welding, where the welding energy ranges from 12 to 16 KJ/cm; for mid-level restriction conditions, performing a welding process without preheating, and for high restriction conditions, preheating until the temperature reaches 50°C before welding the weld seam, and controlling an interlayer temperature to be 100-150°C. The method enhances the strength and toughness of a welded joint, such that the welded joint has in-use performance matching the in-use performance of a Q890DQP base material, and exhibits favorable mechanical performance. The invention can reduce the temperature to be reached by preheating before a welding process, reduce production costs, improve the welding environment, and effectively enhance production efficiency.
Documents de brevet associés