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1. (WO2018159719) FILLET WELDED JOINT AND MANUFACTURING METHOD THEREOF
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/159719 International Application No.: PCT/JP2018/007638
Publication Date: 07.09.2018 International Filing Date: 28.02.2018
IPC:
B23K 9/23 (2006.01) ,B23K 9/02 (2006.01) ,B23K 35/30 (2006.01) ,C22C 38/00 (2006.01) ,C22C 38/06 (2006.01) ,C22C 38/58 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9
Arc welding or cutting
23
taking account of the properties of the materials to be welded
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9
Arc welding or cutting
02
Seam welding; Backing means; Inserts
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
35
Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
22
characterised by the composition or nature of the material
24
Selection of soldering or welding materials proper
30
with the principal constituent melting at less than 1550°C
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
06
containing aluminium
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
58
with more than 1.5% by weight of manganese
Applicants:
新日鐵住金株式会社 NIPPON STEEL & SUMITOMO METAL CORPORATION [JP/JP]; 東京都千代田区丸の内二丁目6番1号 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071, JP
Inventors:
児玉 真二 KODAMA, Shinji; JP
松田 和貴 MATSUDA, Kazuki; JP
石田 欽也 ISHIDA, Yoshinari; JP
Agent:
青木 篤 AOKI, Atsushi; JP
三橋 真二 MITSUHASHI, Shinji; JP
福地 律生 FUKUCHI, Norio; JP
齋藤 学 SAITO, Manabu; JP
堂垣 泰雄 DOGAKI, Yasuo; JP
Priority Data:
2017-03628328.02.2017JP
Title (EN) FILLET WELDED JOINT AND MANUFACTURING METHOD THEREOF
(FR) JOINT SOUDÉ EN ANGLE ET PROCÉDÉ DE FABRICATION ASSOCIÉ
(JA) 隅肉溶接継手及びその製造方法
Abstract:
(EN) The present invention relates to a fillet welded joint and a manufacturing method thereof, and addresses the problem of providing a fillet welded joint having excellent weld fatigue strength while suppressing low temperature cracking. In a fillet welded joint according to the present invention, a tensile strength of a base material is at least equal to 980 MPa, a carbon equivalent is at least equal to 0.36 and at most equal to 0.60, a tensile strength [MPa] is at least 1950 times the carbon equivalent [wt%], an average carbon equivalent of welded metal is at least equal to 0.45 and at most equal to 0.65, and at a prescribed position below a surface of a weld toe, a Vickers hardness HVbond at a boundary between the welded metal and a heat affected zone, an average value HVwmt of the Vickers hardness of the welded metal at a position at least 0.1 mm and at most 0.3 mm to the welded metal side of the boundary, and an average value HVhaz of the Vickers hardness of the heat affected zone in a position at least 0.1 mm and at most 0.3 mm to the heat affected zone side of the boundary satisfy HVbond≤HVwmt, HVbond≥HVhaz-50, and HVhaz≤350.
(FR) La présente invention concerne un joint soudé en angle et un procédé de fabrication associé et aborde le problème de la fourniture d'un joint soudé en angle présentant une excellente résistance à la fatigue de soudure tout en supprimant un craquage à basse température. Dans un joint soudé en angle selon la présente invention, une résistance à la traction d'un matériau de base est au moins égale à 980 MPa, un équivalent carbone est au moins égal à 0,36 et au plus égal à 0,60, une résistance à la traction [MPa] est d'au moins 1950 fois l'équivalent carbone [% en poids], un équivalent carbone moyen de métal soudé est au moins égal à 0,45 et au plus égal à 0,65, et au niveau d'une position prescrite au-dessous d'une surface d'une bordure de cordon de soudure, une dureté Vickers (HVbond) au niveau d'une limite entre le métal soudé et une zone affectée par la chaleur, une valeur moyenne (HVwmt) de la dureté Vickers du métal soudé au niveau d'une position d'au moins 0,1 mm et d'au plus 0,3 mm du côté métallique soudé de la limite et une valeur moyenne (HVhaz) de la dureté Vickers de la zone affectée par la chaleur dans une position d'au moins 0,1 mm et d'au plus 0,3 mm du côté de la zone affectée par la chaleur de la limite satisfont la relation suivante : HVbond ≤ HVwmt, HVbond ≥ HVhaz-50 et HVhaz ≤ 350.
(JA) 本発明は、隅肉溶接継手及びその製造方法に関し、低温割れを抑制しつつ優れた溶接疲労強度を有する隅肉溶接継手を提供することを課題とする。本発明による、隅肉溶接継手は、母材の引張強度が980MPa以上、炭素当量が0.36以上0.60以下、引張強度[MPa]が上記炭素当量[wt%]の1950倍以上であり、溶接金属の平均炭素当量が0.45以上0.65以下であり、溶接止端の表面下の所定位置において、溶接金属と熱影響部との境界におけるビッカース硬さHVbondと、境界から溶接金属側に0.1mm以上0.3mm以下の位置における溶接金属のビッカース硬さの平均値HVwmtと、境界から熱影響部側に0.1mm以上0.3mm以下の位置における熱影響部のビッカース硬さの平均値HVhazと、が、HVbond≦HVwmt、HVbond≧HVhaz-50、HVhaz≦350を満たす。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)