公开(公告)号：EP4302919A1

公开(公告)日：2024-01-10

申请号：EP23184410.1

申请日：2023-07-10

申请人： Daido Steel Co., Ltd.

发明人： KONDO, Ryosuke ,  OSAKI, Mototsugu ,  YAMASHITA, Masakazu ,  NAKAMURA, Hironori

IPC分类号： B23K35/02 ,  B23K35/30 ,  B21C47/02 ,  B21C47/12 ,  B23K35/40 ,  B23K9/04

摘要： The present invention relates to a welding wire including a solid wire of metal that has a tensile strength of 800 MPa or more, in which the welding wire has a cast of 300 mm or more and a helix of 20.0 mm or less. The welding wire may include a coating layer including Cu or a Cu alloy on an outer periphery of the solid wire.

公开(公告)号：EP4227433A1

公开(公告)日：2023-08-16

申请号：EP23156487.3

申请日：2023-02-14

申请人： Daido Steel Co., Ltd.

发明人： TAKAHASHI, Nobuyuki ,  KUDO, Daisuke ,  ANDO, Tomohiro ,  KOYANAGI, Yoshihiko

IPC分类号： C22C38/58 ,  C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  C22C38/42 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/50 ,  C21D8/02 ,  C21D6/00 ,  C21D6/02 ,  C21D1/26 ,  C21D7/13

摘要： The present disclosure relates to an austenitic stainless steel contains C ≤ 0.10 mass%, Si ≤ 0.50 mass%, 3.0 ≤ Mn ≤ 8.0 mass%, P ≤ 0.30 mass%, S ≤ 0.30 mass%, 7.0 ≤ Ni ≤ 12.0 mass%, 18.0 ≤ Cr ≤ 28.0 mass%, 1.0 ≤ Mo ≤ 3.0 mass%, 0.03 ≤ V ≤ 0.50 mass%, 0.0003 ≤ B ≤ 0.0300 mass%, 0.0001 ≤ Ca ≤ 0.0300 mass%, 0.35 ≤ N ≤ 0.80 mass%, W ≤ 2.0 mass%, Zr ≤ 0.20 mass%, Cu ≤ 0.5 mass%, Al ≤ 0.10 mass%, and O ≤ 0.050 mass%, with a balance being Fe and unavoidable impurities. The austenitic stainless steel has a number density of coarse alloy carbonitrides of 3×10 5 pieces/mm 2 or less,

公开(公告)号：EP4095281A1

公开(公告)日：2022-11-30

申请号：EP22174990.6

申请日：2022-05-24

申请人： Daido Steel Co., Ltd.

发明人： KAWANO, Masamichi

IPC分类号： C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/44 ,  C22C38/46 ,  C22C38/42 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/60

摘要： The present invention relates to a steel material including, in mass%: 0.310 ≤ C ≤ 0.410; 0.001 ≤ Si ≤ 0.35; 0.45 ≤ V ≤ 0.70; Cr ≤ 6.00; 6.25 ≤ Mn+Cr; Mn/Cr ≤ 0.155; Cu+Ni ≤ 0.84; 0.002 ≤ P ≤ 0.030; 0.0003 ≤ S ≤ 0.0060; P+5S ≤ 0.040; 2.03

公开(公告)号：EP4059638A1

公开(公告)日：2022-09-21

申请号：EP22163032.0

申请日：2022-03-18

申请人： Daido Steel Co., Ltd.

发明人： YOSHIMOTO, Takashi ,  KOYAMA, Tomonori ,  INOUE, Koichiro

IPC分类号： B22F10/25 ,  B33Y70/00 ,  C22C33/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/34 ,  C22C38/40 ,  C22C38/44

摘要： The present invention relates to an Fe-based alloy having a composition including 0.5 mass% ≤ C ≤ 0.9 mass%, 0.5 mass% ≤ Si ≤ 3.0 mass%, 0.1 mass% ≤ Mn ≤ 1.0 mass%, 3.0 mass% ≤ Cr ≤8.0 mass%, and 0.1 mass% ≤ Mo ≤4.0 mass%, with the balance being Fe and unavoidable impurities, and satisfying the following expression (1) when [M] represents a content of an element M expressed in mass% basis, -3.0

公开(公告)号：EP3348660B1

公开(公告)日：2020-11-25

申请号：EP16844307.5

申请日：2016-09-05

申请人： Daido Steel Co., Ltd.

发明人： KAWANO Masamichi

IPC分类号： C22C38/00 ,  C21D6/00 ,  C22C38/60 ,  C22C38/46 ,  C22C38/42 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  C21D1/22 ,  B22C9/06 ,  C21D1/18

公开(公告)号：EP3428292B1

公开(公告)日：2020-11-04

申请号：EP18183302.1

申请日：2018-07-13

申请人： Daido Steel Co., Ltd.

发明人： KOYANAGI, Yoshihiko ,  TAKABAYASHI, Hiroyuki

IPC分类号： C21D9/00 ,  C22C38/18 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/26 ,  C21D7/02 ,  C21D7/13 ,  C21D9/02 ,  C21D9/46 ,  C22C38/28 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C21D1/26 ,  C21D8/02 ,  C22C38/40 ,  C22C38/20

公开(公告)号：EP3115477B1

公开(公告)日：2020-04-08

申请号：EP15759094.4

申请日：2015-03-03

申请人： Daido Steel Co.,Ltd. ,  Denso Corporation

发明人： TANAKA, Yuuki ,  HARITANI, Makoto ,  MIYAZAKI, Takahiro ,  MORITA, Kouji ,  TANIMURA, Yoshihiro ,  ITO, Toshimasa ,  NISHIWAKI, Tadashi ,  FUKUOKA, Tomomitsu

IPC分类号： C22C38/00 ,  C21D6/00 ,  C22C38/60 ,  C21D8/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  C21D6/02

公开(公告)号：EP3624145A1

公开(公告)日：2020-03-18

申请号：EP19193813.3

申请日：2019-08-27

申请人： Daido Steel Co.,Ltd.

发明人： NAKAMURA, Michihide ,  ITAKURA, Masaru

IPC分类号： H01F1/057

摘要： The present invention relates to an R-T-B-based sintered magnet including: a rare earth element R; a metal element T which is Fe, or includes Fe and Co with which a part of Fe is substituted; boron; and a boride forming element M which is a metal element other than rare earth elements and the metal element T and forms a boride, in which the R-T-B-based sintered magnet includes: a main phase which includes a crystal grain of an R-T-B-based alloy; and a boride phase which includes a compound phase based on the boride of the boride forming element M, and is generated on a preferential growth plane of the crystal grain of the main phase.

公开(公告)号：EP3594975A1

公开(公告)日：2020-01-15

申请号：EP19184665.8

申请日：2019-07-05

申请人： Daido Steel Co.,Ltd.

发明人： NAKAMURA, Michihide

IPC分类号： H01F41/02 ,  H01F1/057

摘要： The present invention relates to an RFeB-based sintered magnet having a composition consisting of: 24-31% by mass of at least one element selected from the group consisting of Nd, Pr, La and Ce; 0.1-6.5% by mass of at least one element selected from the group consisting of Dy and Tb; 0.8-1.4% by mass of B; 0.03-0.2% by mass of at least one element selected from the group consisting of Zr, Ti, Hf and Nb; 0.8-5.5% by mass of Co; 0.1-1.0% by mass of Cu; 0.1-1.0% by mass of Al; and up to 1.0% by mass of Ga, with a remainder being Fe and unavoidable impurities, in which the composition has a total content of Cu and Al being higher than 0.5% by mass.

公开(公告)号：EP2955731B1

公开(公告)日：2019-08-14

申请号：EP14748535.3

申请日：2014-02-03

申请人： INTERMETALLICS CO., LTD. ,  Daido Steel Co.,Ltd.

发明人： SAGAWA, Masato ,  MIZOGUCHI, Tetsuhiko ,  YOSHIKAWA, Norio

IPC分类号： H01F41/02 ,  B22F3/00 ,  B22F3/02 ,  B22F3/10 ,  H01F1/055 ,  H01F1/057 ,  H01F1/08 ,  H01F13/00