公开(公告)号：EP2287360B1

公开(公告)日：2018-09-12

申请号：EP09750567.1

申请日：2009-05-19

申请人： Neturen Co., Ltd. ,  Nihon Parkerizing Co., Ltd.

发明人： FUKAZAWA Kengo ,  MISAKA Yoshitaka ,  KAWASAKI Kazuhiro ,  IKEDA Yoshihiro ,  BEPPU Masaaki ,  SUDA Arata

IPC分类号： C21D1/06 ,  C21D1/10 ,  C23C8/32 ,  C23C8/56 ,  C23C8/80 ,  C21D1/70 ,  C21D1/72

CPC分类号： C23C8/32 ,  C21D1/06 ,  C21D1/10 ,  C21D1/70 ,  C21D1/72 ,  C21D2211/004 ,  C21D2221/00 ,  C21D2251/00 ,  C23C8/56 ,  C23C8/80 ,  Y02P10/253

摘要： Providing an iron and steel material having quenched surface part, avoiding oxidation of a compound layer formed on the surface of the iron and steel material due to quenching, its production method, and an induction-quenched component. A quenched iron and steel material 10 comprises an iron and steel material 11, a compound layer 12 formed on the iron and steel material 11, and an antioxidant cover layer 13 formed on the compound layer 12. The iron and steel material 11 has a hardened layer having a given depth, and the surface of the iron and steel material 11 has enhanced hardness. A method for producing the iron and steel material 10 comprises a first step for forming the antioxidant cover layer 13 to cover the compound layer 12 formed on the iron and steel material 11, and a second step for applying induction hardening to the iron and steel material 11 having the compound layer 12 and the antioxidant cover layer 13, with the temperature increased in a given heating time until the given heating temperature is reached, and with cooling immediately performed once the heating temperature is reached.

公开(公告)号：EP2888377B1

公开(公告)日：2018-03-14

申请号：EP13830551.1

申请日：2013-08-19

申请人： Aktiebolaget SKF

发明人： LARSSON, Staffan ,  DATCHARY, Walter ,  FLODSTRÖM, Isabella ,  NEUMAN, Peter

IPC分类号： C21D1/06 ,  C23C8/32 ,  C23C8/56 ,  C23C8/76

CPC分类号： C23C8/32 ,  C21D1/06 ,  C21D9/36 ,  C21D9/40 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/22 ,  C23C8/34 ,  C23C8/56 ,  C23C8/80 ,  C23F17/00

摘要： A method for heat treating a steel component, which comprises the steps of: (a) carbonitriding the steel component, and (b) austenitically nitrocarburizing the steel component.

公开(公告)号：EP3276023A4

公开(公告)日：2018-01-31

申请号：EP16768070

申请日：2016-03-24

申请人： JFE STEEL CORP

发明人： KASAI MASAYUKI ,  IWAMOTO TAKASHI ,  TOMITA KUNIKAZU

IPC分类号： C22C38/00 ,  C21D1/06 ,  C21D8/06 ,  C22C38/60

CPC分类号： C22C38/60 ,  C21D1/06 ,  C21D1/20 ,  C21D1/74 ,  C21D7/13 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/002 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  C23C8/26 ,  C23C8/32

摘要： Disclosed is a steel for nitrocarburizing whose mechanical workability before nitrocarburizing treatment is guaranteed by ensuring fatigue resistance without causing the steel to harden before subjection to nitrocarburizing treatment, and a method of producing the same. The steel for nitrocarburizing has a chemical composition that contains C: 0.01 % or more and less than 0.20 %, Si: 1.0 % or less, Mn: 1.5 % or more and 3.0 % or less, P: 0.02 % or less, S: 0.06 % or less, Cr: 0.30 % or more and 3.0 % or less, Mo: 0.005 % or more and 0.40 % or less, V: 0.02 % or more and 0.5 % or less, Nb: 0.003 % or more and 0.20 % or less, Al: 0.010 % or more and 2.0 % or less, Ti: more than 0.005% and less than 0.025 %, N: 0.0200 % or less, Sb: 0.0005 % or more and 0.02 % or less, and the balance consisting of Fe and incidental impurities, with the chemical composition satisfying a predetermined relation; and a steel microstructure that contains bainite phase in an area ratio of more than 50 %.

公开(公告)号：EP3176278A4

公开(公告)日：2017-12-27

申请号：EP15827899

申请日：2015-07-29

申请人： NIPPON STEEL & SUMITOMO METAL CORP ,  JTEKT CORP

发明人： NEISHI YUTAKA ,  SUZUKI TAKAHISA ,  KOYAMA TATSUYA ,  YAMASAKI SHINGO ,  KANETANI KOHEI ,  SADA TAKASHI

IPC分类号： C22C38/00 ,  C21D1/06 ,  C21D9/40 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/54 ,  C23C8/32 ,  C23C8/80 ,  F16C33/62

CPC分类号： C23C8/32 ,  C21D1/06 ,  C21D9/40 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/54 ,  C23C8/80 ,  F16C33/62 ,  F16C2204/66 ,  F16C2204/70 ,  F16C2223/16 ,  F16C2240/90

摘要： Provided is a carbonitrided bearing part which has high hardenability and toughness, and is excellent in wear resistance and surface-originated flaking life. A carbonitrided bearing part of the present embodiment has a chemical composition containing, in mass%, C: 0.15 to 0.45%, Si: not more than 0.50%, Mn: 0.40 to 1.50%, P: not more than 0.015%, S: not more than 0.005%, Cr: 0.30 to 2.0%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.10%, N: not more than 0.030%, and O: not more than 0.0015%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2). At surface, C concentration is 0.7 to 1.2%, N concentration is 0.15 to 0.6%, and Rockwell hardness HRC is 58 to 65. 1.20 2.20

公开(公告)号：EP2716789B1

公开(公告)日：2017-10-25

申请号：EP12793146.7

申请日：2012-05-29

申请人： Nisshinbo Brake Inc.

发明人： TAKAYAMA, Takeshi ,  TAMAI, Yoshihiro

IPC分类号： F16D69/04 ,  F16D65/092 ,  C23C8/26 ,  C23C8/32

CPC分类号： F16D65/092 ,  C23C8/02 ,  C23C8/26 ,  C23C8/32 ,  F16D69/0408

公开(公告)号：EP3176278A1

公开(公告)日：2017-06-07

申请号：EP15827899.4

申请日：2015-07-29

申请人： Nippon Steel & Sumitomo Metal Corporation ,  JTEKT Corporation

发明人： NEISHI, Yutaka ,  SUZUKI, Takahisa ,  KOYAMA, Tatsuya ,  YAMASAKI, Shingo ,  KANETANI, Kohei ,  SADA, Takashi

IPC分类号： C22C38/00 ,  C21D1/06 ,  C21D9/40 ,  C22C38/24 ,  C22C38/54 ,  C23C8/32 ,  C23C8/80 ,  F16C33/62

CPC分类号： C22C38/32 ,  C21D1/06 ,  C21D6/002 ,  C21D6/008 ,  C21D9/40 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C23C8/32 ,  C23C8/80 ,  F16C33/62 ,  F16C2204/66 ,  F16C2204/70 ,  F16C2223/16 ,  F16C2240/90

摘要： Provided is a carbonitrided bearing part which has high hardenability and toughness, and is excellent in wear resistance and surface-originated flaking life. A carbonitrided bearing part of the present embodiment has a chemical composition containing, in mass%, C: 0.15 to 0.45%, Si: not more than 0.50%, Mn: 0.40 to 1.50%, P: not more than 0.015%, S: not more than 0.005%, Cr: 0.30 to 2.0%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.10%, N: not more than 0.030%, and O: not more than 0.0015%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2). At surface, C concentration is 0.7 to 1.2%, N concentration is 0.15 to 0.6%, and Rockwell hardness HRC is 58 to 65. 1.20 0.4 Cr + 0.4 Mo + 4.5 V 2.60 2.7 C + 0.4 Si + Mn + 0.8 Cr + Mo + V > 2.20

摘要翻译： 本发明提供淬透性和韧性高，耐磨损性和表面起皮剥离寿命优异的碳氮共渗轴承部。 本实施方式的碳氮共渗轴承部的化学组成以质量％计含有C：0.15〜0.45％，Si：0.50％以下，Mn：0.40〜1.50％，P：0.015％以下，S： ，Cr：0.30〜2.0％，Mo：0.10〜0.35％，V：0.20〜0.40％，Al：0.005〜0.10％，N：0.030％以下，O：0.0015％ 余量为Fe和杂质，满足式（1）和（2）。 在表面，C浓度为0.7-1.2％，N浓度为0.15-0.6％，洛氏硬度HRC为58-65。1.20 <0.4Cr + 0.4Mo + 4.5V <2.60 2.7C + 0.4Si + Mn + 0.8Cr +沫+ V> 2.20

公开(公告)号：EP2536864B1

公开(公告)日：2017-03-15

申请号：EP11700010.9

申请日：2011-01-03

申请人： Robert Bosch GmbH

发明人： SCHWARZER, Jochen ,  HAGYMASI, Laszlo ,  WALDENMAIER, Thomas

IPC分类号： C23C8/30 ,  C23C8/32 ,  C23C8/34

CPC分类号： C23C8/30 ,  C23C8/32 ,  C23C8/34

公开(公告)号：EP2966311A4

公开(公告)日：2017-01-11

申请号：EP14749043

申请日：2014-01-20

申请人： NTN TOYO BEARING CO LTD

发明人： SAKANAKA NORIAKI ,  MATSUBARA YUKIO ,  OHKI CHIKARA ,  SATO DAISUKE

IPC分类号： F16C33/64 ,  C21D1/06 ,  C21D9/36 ,  C21D9/40 ,  C23C8/32 ,  F16C19/06 ,  F16C33/32 ,  F16C33/62

CPC分类号： F16C33/62 ,  C21D1/06 ,  C21D9/36 ,  C21D9/40 ,  C21D2211/004 ,  C23C8/32 ,  F16C19/06 ,  F16C33/32 ,  F16C33/64

公开(公告)号：EP3006584A4

公开(公告)日：2016-12-28

申请号：EP13885805

申请日：2013-05-30

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： KOYAMA TATSUYA ,  YOSHIDA SUGURU

IPC分类号： C22C38/00 ,  C21D1/06 ,  C21D1/10 ,  C21D9/32 ,  C22C38/38 ,  C22C38/60 ,  C23C8/32 ,  C23C8/80

CPC分类号： C21D1/06 ,  C21D1/10 ,  C21D1/42 ,  C21D1/74 ,  C21D9/32 ,  C22C38/38 ,  C22C38/60 ,  C23C8/32 ,  C23C8/80 ,  Y02P10/253

摘要： A soft nitrided induction hardened steel part which is excellent in bearing fatigue strength comprised of a predetermined chemical composition wherein a dissolved N concentration from the surface to 0.2 mm depth is 0.05 to 1.50%, a Vicker's hardness from the surface to 0.2 mm depth after tempering at 300°C is Hv600 or more, and t/r‰¤0.35 when an effective hardened layer depth "t" is 0.5 mm or more and a radius of a breakage risk site or half of the thickness is "r" (mm).

公开(公告)号：EP2910657A4

公开(公告)日：2016-09-14

申请号：EP13846585

申请日：2013-10-16

申请人： NTN TOYO BEARING CO LTD

发明人： SATO DAISUKE ,  OHKI CHIKARA

IPC分类号： C22C38/00 ,  C21D1/06 ,  C21D1/76 ,  C21D9/36 ,  C21D9/40 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C23C8/32 ,  C23C8/80 ,  C23F17/00 ,  F16C19/02 ,  F16C19/06 ,  F16C19/22 ,  F16C19/30 ,  F16C19/36 ,  F16C33/32 ,  F16C33/34 ,  F16C33/56 ,  F16C33/62 ,  F16C33/64

CPC分类号： F16C33/62 ,  C21D1/06 ,  C21D1/76 ,  C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C23C8/32 ,  C23C8/80 ,  C23F17/00 ,  F16C19/06 ,  F16C19/30 ,  F16C19/364 ,  F16C33/32 ,  F16C33/34 ,  F16C33/64 ,  F16C2202/04 ,  F16C2204/66 ,  F16C2204/70 ,  F16C2223/16 ,  F16C2240/60

摘要： An outer ring (11), an inner ring (12), and a ball (3) each serving as a bearing part is made of a steel containing 0.95 mass% or more and 1.10 mass% or less of carbon, 0.05 mass% or more and less than 0.3 mass% of silicon, 0.10 mass% or more and 0.50 mass% or less of manganese, and 1.30 mass% or more and 2.00 mass% or less of chromium, with the rest made up of iron and an impurity. A surface layer region (11B, 12B, 13B) defined as a region extending to a depth of not more than 20 µm from an outer ring raceway surface (11A), an inner ring raceway surface (12A), and a ball rolling surface (13A), which are each a surface where the bearing part is in rolling contact with another part, has an average nitrogen concentration of 0.2 mass% or more and 0.7 mass% or less. Five or more carbides with a diameter of 0.5 µm or less are present per 100 µm 2 in the surface layer region (11B, 12B, 13B).