公开(公告)号：US20170274482A1

公开(公告)日：2017-09-28

申请号：US15505288

申请日：2015-09-02

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： Peng HAN ,  Hiroyuki KAWASAKI ,  Yoshihiko KITAGAWA ,  Hidenori NAKO ,  Takuya KOCHI ,  Wataru URUSHIHARA ,  Yoshitomi OKAZAKI

IPC分类号： B23K35/368 ,  B23K35/30

CPC分类号： B23K35/368 ,  B23K9/173 ,  B23K35/30 ,  B23K35/3073

摘要： A flux cored wire, which is obtained by filling the inside of a steel outer skin with a flux, is configured to have a composition that contains, in mass % relative to the total mass of the wire, 0.01-0.12% of C, 0.05% or more but less than 0.30% of Si, 1.0-3.5% of Mn, 0.1% or more but less than 1.0% of Ni, 0.10-0.30% of Mo, 0.1-0.9% of Cr, 4.5-8.5% of TiO2, 0.10-0.40% of SiO2, 0.03-0.23% of Al2O3 and 80% or more of Fe.

公开(公告)号：US20230111990A1

公开(公告)日：2023-04-13

申请号：US17905389

申请日：2021-02-24

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： Keito ISHIZAKI ,  Yoshihiko KITAGAWA ,  Tomoko SUGIMURA ,  Tatsuya SASAKI ,  Hidenori NAKO

IPC分类号： B23K35/362 ,  B23K35/30 ,  B23K25/00

摘要： A flux for electroslag welding used for electroslag welding may include a basic oxide, an amphoteric oxide, an acidic oxide, and a fluoride. With respect to a total mass of the flux, the basic oxide may include 5.1 mass % or more and 30.0 mass % or less of CaO, the acidic oxide includes 17 mass % or less of SiO2, and the fluoride includes 35 mass % or more and 73 mass % or less of CaF2. A content of the CaO is 30 mass % or more with respect to a total mass of the basic oxide, a content of the SiO2 is 80 mass % or more with respect to a total mass of the acidic oxide, a content of the CaF2 is 80 mass % or more with respect to a total mass of the fluoride, and a value of (2×[CaF2]+[CaO])/[SiO2] is 5 or more and 56 or less.

公开(公告)号：US20190210164A1

公开(公告)日：2019-07-11

申请号：US16330164

申请日：2017-09-06

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： Hidenori NAKO ,  Masaki SHIMAMOTO ,  Yoshitomi OKAZAKI ,  Masafumi YAMAKAMI ,  Shinya ISONO ,  Keito ISHIZAKI

IPC分类号： B23K35/30 ,  B23K35/368

CPC分类号： B23K35/30 ,  B23K35/368

摘要： Disclosed herein is a flux-cored wire for gas-shielded arc welding containing, based on total mass of the wire: C: from 0.03 to 0.12 mass %; Si in terms of Si in Si alloy and Si compound: from 0.20 to 0.70 mass %; Mn: from 1.0 to 4.0 mass %; Ti in terms of Ti in Ti alloy and Ti compound: from 2.4 to 4.5 mass %; Al: from 0.005 to 0.050 mass %; Ca: from 0.03 to 1.0 mass %; at least one of Ni: from 0.30 to 3.50 mass % and B: from 0.0008 to 0.012 mass %; and Fe: 80 mass % or more, and satisfies: (Ti+Mn+Al+Ca)/Si≥12; and Ca/Si: from 0.07 to 0.35.

公开(公告)号：US20190210166A1

公开(公告)日：2019-07-11

申请号：US16332308

申请日：2017-09-04

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel. Ltd.)

发明人： Keito ISHIZAKI ,  Yimin YUAN ,  Hidenori NAKO ,  Tomoko SUGIMURA ,  Yoshitomi OKAZAKI

IPC分类号： B23K35/30 ,  B23K35/368 ,  C22C38/08 ,  B23K35/02

CPC分类号： B23K35/3066 ,  B23K35/0266 ,  B23K35/30 ,  B23K35/362 ,  B23K35/368 ,  C22C38/00 ,  C22C38/08

摘要： Disclosed herein is an electroslag welding wire containing, by mass % based on total mass of the wire: C: more than 0% and 0.07% or less; Si: more than 0% and 0.50% or less; Mn: more than 0% and 1.0% or less; Ni: 6.0 to 15.0%; and Fe: 79% or more. The electroslag welding wire satisfies the following relationship (1): 0.150≤C±Si/30+Mn/20+Ni/60≤0.300 (1).

公开(公告)号：US20160244865A1

公开(公告)日：2016-08-25

申请号：US15027273

申请日：2014-12-10

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)

发明人： Akira IBANO ,  Hidenori NAKO ,  Yoshitomi OKAZAKI

IPC分类号： C22C38/28 ,  C22C38/16 ,  C22C38/14 ,  C22C38/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/26 ,  C22C38/12

CPC分类号： C22C38/28 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/14 ,  C21D9/46 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/26

摘要： The present invention relates to a steel plate with excellent sour resistance, HAZ toughness and HAZ hardness, including, in terms of mass %, C: 0.02-0.20%, Si: 0.02-0.50%, Mn: 0.6-2.0%, P: over 0% and 0.030% or less, S: over 0% and 0.004% or less, Al: 0.010-0.08%, N: 0.001-0.01%, Nb: 0.002% or more and less than 0.05%, O: over 0% and 0.0040% or less, REM: 0.0002-0.05%, and Zr: 0.0003-0.020% with the remainder consisting of iron and inevitable impurities, in which an expression 10,000×[Nb]+31×Di−82≧0 (where Di=([C]/10)0.5×(1+0.7×[Si])×(1+3.33×[Mn])×(1+0.35×[Cu])×(1+0.36×[Ni])×(1+2.16×[Cr])×(1+3×[Mo])×(1+1.75×[V])×1.115) is satisfied, and, in the composition of inclusions with 1 μm or more width contained in steel, Zr amount is 1-40%, REM amount is 5-50%, Al amount is 3-30%, and S amount is over 0% and less than 20%.

摘要翻译： 本发明涉及耐酸性，HAZ韧性和HAZ硬度优异的钢板，其质量％以C：0.02-0.20％，Si：0.02-0.50％，Mn：0.6-2.0％，P： 0％以上且0.030％以下，S：0％以上且0.004％以下，Al：0.010〜0.08％，N：0.001-0.01％，Nb：0.002％以上且0.05％以下，O：0以上 ％和0.0040％以下，REM：0.0002〜0.05％，Zr：0.0003〜0.020％，余量由铁和不可避免的杂质组成，其中表达式为10000×[Nb] + 31×Di-82≥0（其中 Di =（[C] / 10）0.5×（1 + 0.7×[Si]）×（1 + 3.33×[Mn]）×（1 + 0.35×[Cu]）×（1 + 0.36×[Ni] ×（1 + 2.16×[Cr]）×（1 + 3×[Mo]）×（1 + 1.75×[V]）×1.115），并且在含有1μm以上的夹杂物的组成 在钢中，Zr量为1-40％，REM量为5-50％，Al量为3-30％，S量超过0％且小于20％。

公开(公告)号：US20160008931A1

公开(公告)日：2016-01-14

申请号：US14769611

申请日：2014-02-24

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)

发明人： Hidenori NAKO ,  Takuya KOCHI ,  Wataru URUSHIHARA ,  Hiroyuki KAWASAKI ,  Peng HAN ,  Yoshihiko KITAGAWA ,  Yoshitomi OKAZAKI

IPC分类号： B23K35/30 ,  C22C38/54 ,  C22C38/50 ,  C22C38/46 ,  B23K35/362 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/58 ,  C22C38/44

CPC分类号： B23K35/3093 ,  B23K35/3073 ,  B23K35/362 ,  B23K35/368 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

摘要： This welded metal contains 0.02-0.10% of C, 0.10-0.60% of Si, 0.90-2.5% of Mn, 0.20-2.00% of Ni, 0.05-1.0% of Cr, 0.10-1.50% of Mo, 0.040-0.15% of Ti, 0.0010-0.0050% of B, 0.030-0.100% of O and 0.015% or less (excluding 0%) of N, with the balance made up of iron and unavoidable impurities. The average circle-equivalent diameter of carbides having a circle-equivalent diameter of 0.40 μm or more among the carbides present in the grain boundary of this welded metal is 0.75 μm or less. Consequently, the present invention provides: a welded metal which exhibits excellent low-temperature toughness at lower temperatures, while having high strength after SR annealing, even in cases where gas sealed arc welding using a flux cored wire and having excellent work efficiency is applied; and a welded structure which is provided with this welded metal.

摘要翻译： 该焊接金属含有0.02〜0.10％的C，0.10〜0.60％的Si，0.90〜2.5％的Mn，0.20〜2.00％的Ni，0.05〜1.0％的Cr，0.10〜1.50％的Mo，0.040〜0.15％ 的Ti，0.0010〜0.0050％的B，0.030〜0.100％的O和0.015％以下（不含0％）的N，余量由铁和不可避免的杂质构成。 在该焊接金属的晶界存在的碳化物中，当量圆直径为0.40μm以上的碳化物的平均当量直径为0.75μm以下。 因此，本发明提供：即使在使用药芯焊丝进行气体电弧焊接并且具有优异的工作效率的情况下，也可以在SR退火后具有高强度的低温下显示出优异的低温韧性的焊接金属; 以及设置有该焊接金属的焊接结构体。

公开(公告)号：US20210154777A1

公开(公告)日：2021-05-27

申请号：US17045564

申请日：2019-05-17

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： Hidenori NAKO ,  Tomoko SUGIMURA ,  Keito ISHIZAKI ,  Yoshihiko KITAGAWA

IPC分类号： B23K35/30 ,  C22C38/54 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00 ,  B23K35/02 ,  B23K35/362

摘要： A solid wire for electroslag welding, including Fe and, by mass % based on a total mass of the wire: C: more than 0% and 0.03% or less; Si: more than 0% and 0.10% or less; Mn: more than 0% and 0.25% or less; Ni: 10.5%-14.0%; S: more than 0% and 0.010% or less; Al: more than 0% and 0.250% or less; REM: 0.002%-0.080%; and O: more than 0% and 0.0090% or less.

公开(公告)号：US20160002758A1

公开(公告)日：2016-01-07

申请号：US14655412

申请日：2014-02-03

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)

发明人： Hidenori NAKO ,  Ken YAMASHITA ,  Minoru OTSU ,  Mikihiro SAKATA ,  Genichi TANIGUCHI

IPC分类号： C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/32 ,  C22C38/26 ,  C22C38/24 ,  C22C38/22 ,  C22C38/20 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B23K35/36

CPC分类号： C22C38/54 ,  B23K35/308 ,  B23K35/3602 ,  B23K35/3605 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

摘要： This welded structure comprises a weld metal which contains C, Si, Mn, Cr, Mo, V, Nb, N and O in prescribed amounts respectively with the balance being Fe and unavoidable impurities and which exhibits an A value of 200 or more and a Z value of 0.05 or more. The A value is calculated from the element contents of the weld metal according to the formula: A value=([V]/51+[Nb]/93)/{[V]×([Cr]/5+[Mo]/2)}×104. The Z value is calculated according to the formula: Z value=N×[insol. V] [wherein N (particles/μm) is the number density of carbide particles present in a prior austenite grain boundary per unit grain boundary in the stress-relief annealed weld metal, and [insol. V] is the concentration of compound-type V as determined by analyzing an extraction residue of the stress-relief annealed weld metal].

摘要翻译： 这种焊接结构包括分别含有规定量的C，Si，Mn，Cr，Mo，V，Nb，N和O的焊接金属，余量为Fe和不可避免的杂质，并且其A值为200以上， Z值为0.05以上。 A值根据以下公式从焊接金属的元素含量计算：A值=（[V] / 51 + [Nb] / 93）/ {[V]×（[Cr] / 5 + / 2）}×104。 Z值根据公式计算：Z值= N×[ V] [其中，N（粒子/μm）是存在于应力缓和退火焊接金属中的每单位晶界的奥氏体晶界的现有碳化物粒子的数密度， V]是通过分析应力消除退火焊接金属的提取残留物确定的化合物类型V的浓度]。

公开(公告)号：US20150314400A1

公开(公告)日：2015-11-05

申请号：US14649712

申请日：2014-01-10

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)

发明人： Hidenori NAKO ,  Takuya KOCHI ,  Wataru URUSHIHARA ,  Hiroyuki KAWASAKI ,  Peng HAN ,  Yoshihiko KITAGAWA

IPC分类号： B23K35/30 ,  C22C38/54 ,  C22C38/50 ,  C22C38/46 ,  C22C38/00 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/58 ,  C22C38/44

CPC分类号： B23K35/3066 ,  B23K9/186 ,  B23K35/0255 ,  B23K35/0261 ,  B23K35/0288 ,  B23K35/30 ,  B23K35/3053 ,  B23K35/3073 ,  B23K35/36 ,  B23K35/3601 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/105 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

摘要： The weld metal of the present invention has a given chemical composition, contains retained austenite particles in an amount of 2,500 grains/mm2 or more, and has a volume fraction of the retained austenite particles of 4.3 vol % or more and a content ratio of Cr and Mn, [Cr]/[Mn], of 0.20 or more. The weld metal has excellent resistance to hydrogen embrittlement even when the weld metal has a high tensile strength of more than 780 MPa.

摘要翻译： 本发明的焊接金属具有给定的化学成分，含有2500个/ mm 2以上的残留奥氏体粒子，残留奥氏体粒子的体积分率为4.3体积％以上，Cr的含有比例 Mn，[Cr] / [Mn]为0.20以上。 即使焊接金属的拉伸强度高于780MPa，焊接金属也具有优异的耐氢脆性。

公开(公告)号：US20220355421A1

公开(公告)日：2022-11-10

申请号：US17624049

申请日：2020-06-24

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： Hidenori NAKO ,  Keito ISHIZAKI ,  Junichi KAWATA ,  Yuta KINOSHITA

IPC分类号： B23K35/30 ,  B23K35/02 ,  C22C38/50 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

摘要： An austenitic stainless steel flux cored wire may provide a welded metal having excellent cryogenic temperature toughness; a welded metal from the wire may have excellent cryogenic temperature toughness; and a welding method may involve such wire(s). An austenitic stainless steel flux cored wire in which a flux is filled in a steel-made shell. The flux cored wire may contain Si, Mn, Ni, Cr, C, P, and N in amounts each falling within a specified range relative to the entire mass of the wire, with the remainder made up by Fe and unavoidable impurities, and X1 is 17.5 to 22.0 inclusive, as calculated by formula (1): X1=[Ni]W+0.5×[Cr]W+1.6×[Mn]W+0.5×[Si]W+15×[C]W  (1), wherein, in formula (1), [Ni]W, [Cr]W, [Mn]W, [Si]W and [C]W represent the contents (% by mass) of Ni, Cr, Mn, Si, and C, relative to the entire mass of the wire.