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2. 发明公开

EP3176278A4 CARBONITRIDED BEARING MEMBER 有权转让
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

3. 发明公开

EP3176278A1 CARBONITRIDED BEARING MEMBER 有权转让
标题翻译：碳氮化合物轴承
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

4. 发明公开

EP3155134A1 METHOD OF HEAT TREATMENT OF BEARING STEEL 审中-公开
标题翻译： VERFAHREN ZURWÄRMEBEHANDLUNGVON LAGERSTAHL
公开(公告)号：EP3155134A1
公开(公告)日：2017-04-19
申请号：EP15741719.7
申请日：2015-06-11
申请人： Comtes FHT a.s.
发明人： HAUSEROVÁ, Daniela , NOVY, Zbysek , DLOUHY, Jaromir , DIEKMANN, Uwe
IPC分类号： C21D1/78 , C21D9/32 , C21D9/40 , C21D1/32 , C22C38/02 , C22C38/18 , F16C33/62
CPC分类号： C21D1/32 , C21D1/785 , C21D9/32 , C21D9/40 , C21D2211/004 , C21D2211/005 , C22C38/02 , C22C38/18 , F16C33/62 , F16C2202/04 , F16C2204/66 , F16C2223/18
摘要： This heat treatment of bearing steel comprises annealing and hardening. Hardening is carried out after annealing and after the manufacture of structural parts from this steel. The first part of the annealing process is heating of the steel at a rate of more than 1 °C/s to a temperature in the range between 750 °C and 900 °C. It is followed by holding at the temperature achieved for at least 400 seconds. This is followed by cooling at a rate higher than 0.02 °C/s to a temperature, at which austenite begins to transform to ferrite and carbides. In the next step, there is cooling to such temperature and at such rate that complete transformation of austenite to ferrite and carbides takes place at least in the desired location of the steel. The cycle of heating, holding and cooling is carried out at least once. Then the steel is cooled to the ambient temperature. In the preferred embodiment, the quenching temperature during subsequent hardening is lower than the quenching temperature of the conventionally annealed steel in question. The steel may be heated by induction.
摘要翻译：轴承钢的热处理包括退火和硬化。淬火在退火后和从该钢制造结构件后进行。退火过程的第一部分是将钢以大于1℃/ s的速率加热到750℃和900℃之间的温度。然后保持达到至少400秒的温度。然后以高于0.02℃/ s的速率冷却至奥氏体开始转变为铁素体和碳化物的温度。在下一步骤中，将冷却至这样的温度，并且至少在钢的期望位置上发生奥氏体完全转变为铁素体和碳化物的速度。加热，保持和冷却的循环至少进行一次。然后将钢冷却至环境温度。在优选实施例中，随后硬化期间的淬火温度低于所讨论的常规退火钢的淬火温度。钢可以通过感应加热。

5. 发明公开

EP2910657A4 BEARING ELEMENT, ROLLING BEARING AND PROCESS FOR PRODUCING BEARING ELEMENT 有权
标题翻译：存储元件，用于制造轴承元件轴承和方法
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).

6. 发明公开

EP2910657A1 BEARING ELEMENT, ROLLING BEARING AND PROCESS FOR PRODUCING BEARING ELEMENT 有权
标题翻译： LAGERELEMENT，WÄLZLAGERUND VERFAHREN ZUR HERSTELLUNG EINES LAGERELEMENTS
公开(公告)号：EP2910657A1
公开(公告)日：2015-08-26
申请号：EP13846585.1
申请日：2013-10-16
申请人： NTN Corporation
发明人： SATO, Daisuke , OHKI, Chikara
IPC分类号： C22C38/00 , C21D1/06 , C21D1/76 , C21D9/40 , C22C38/18 , C23C8/32 , C23C8/80 , F16C19/02 , F16C19/22 , 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).
摘要翻译：每个用作轴承部分的外圈（11），内圈（12）和球（3）由含有0.95质量％以上且1.10质量％以下的碳，0.05质量％的钢或大于等于0.3质量％的硅，0.10质量％以上且0.50质量％以下的锰，以及1.30质量％以上且2.00质量％以下的铬，其余由铁和杂质构成。被定义为从外圈滚道表面（11A）延伸到不大于20μm深度的区域，内圈滚道表面（12A）和滚珠滚动表面（11A）的表面层区域（11B，12B，13B） 13A），它们各自是轴承部分与另一部分滚动接触的表面，其平均氮浓度为0.2质量％以上且0.7质量％以下。在表面层区域（11B，12B，13B）中每100μm2存在5个以上的直径为0.5μm以下的碳化物。

7. 发明公开

EP2733373A4 ROLLING BEARING DEVICE 有权
标题翻译： WÄLZLAGERVORRICHTUNG
公开(公告)号：EP2733373A4
公开(公告)日：2015-08-05
申请号：EP12810623
申请日：2012-06-18
申请人： NTN TOYO BEARING CO LTD
发明人： FUJIKAKE YASUHITO , NAKAMURA TOMOYA , SUZUKI HIROAKI
IPC分类号： F16C33/38 , F16C19/16 , F16C19/54 , F16C33/46 , F16C33/66
CPC分类号： F16C33/6614 , F16C19/543 , F16C19/548 , F16C33/3837 , F16C33/3843 , F16C33/3887 , F16C33/4623 , F16C33/6607 , F16C33/6622 , F16C33/6629 , F16C2204/66 , F16C2208/32 , F16C2326/47
摘要： Radial passages (22) that penetrate from the inner diameter side to the outer diameter side of a retainer (8) are provided between inner wall surface portions (14) of a pocket (10) facing each other in an axial direction of the retainer and a rolling element (6) so that the radial passages (22) serve as a grease reservoir as well as a grease passage for allowing the grease adhering to the rolling element (6) to move onto an outer ring raceway surface (4a). The radial passages (22) are made up of arc-shaped spaces (18) between the rolling element (6) and the inner wall surface portions (14) of the inner wall surface of a pocket (10) and segment shaped spaces (20) between the rolling element (6) and arcuate recesses (16) at the four corners of the pocket (10).
摘要翻译：在保持器的轴向方向上彼此面对的口袋（10）的内壁面部（14）之间，设有从保持架（8）的内径侧向外径侧贯通的径向通路（22）滚动元件（6），使得径向通道（22）用作油脂储存器以及用于允许粘附到滚动元件（6）的润滑脂移动到外圈滚道表面（4a）上的油脂通道。径向通道（22）由滚动元件（6）与凹穴（10）的内壁表面的内壁表面部分（14）和分段成形空间（20）之间的弧形空间（18）构成）在所述凹口（10）的所述四个角部处的滚动元件（6）和弧形凹部（16）之间。

8. 发明公开

EP2759620A1 HARD FILM, HARD FILM FORMED BODY, AND ROLLING BEARING 有权
标题翻译： HARTSCHICHT，AUS DER HARTSCHICHT GEFORMTERKÖRPERUNDWÄLZLAGER
公开(公告)号：EP2759620A1
公开(公告)日：2014-07-30
申请号：EP12833570.0
申请日：2012-09-21
申请人： NTN Corporation
发明人： TSUTSUI, Hideyuki , OOHIRA, Kouya , NAKANISHI, Masaki
IPC分类号： C23C14/06 , F16C33/58
CPC分类号： F16C33/62 , C23C14/024 , C23C14/027 , C23C14/0605 , C23C14/3464 , C23C28/324 , C23C28/341 , C23C28/343 , C23C28/347 , C23C28/36 , F16C33/32 , F16C33/34 , F16C33/565 , F16C33/64 , F16C33/6603 , F16C2202/04 , F16C2204/44 , F16C2204/66 , F16C2206/04 , F16C2206/58 , F16C2206/82 , F16C2223/14 , F16C2223/30 , Y10T428/2495 , Y10T428/30
摘要： The present invention provides a hard film which has high wear resistance and excellent peeling resistance and can be prevented from peeling off a base material over a long period of time and a hard film formed body on which the hard film is formed. A hard film (8) has a structure composed of a first mixed layer (8a), consisting mainly of Cr and WC, which is formed directly on a raceway surface (2a) of an inner ring (2) (base material) of a rolling bearing, a second mixed layer (8b), consisting mainly of WC and DLC, which is formed on the first mixed layer (8a), and a surface layer (8c), consisting mainly of DLC, which is formed on the second mixed layer (8b). In the first mixed layer (8a), a content rate of the Cr becomes continuously or stepwise lower and that of the DLC becomes continuously or stepwise higher from a side of the base material toward a side of the second mixed layer (8b). In the second mixed layer (8b), a content rate of the WC becomes continuously or stepwise lower and that of the DLC becomes continuously or stepwise higher from a side of the first mixed layer (8a) toward a side of the surface layer (8c). A content of hydrogen in the second mixed layer (8b) is set to 10 to 45 atomic percent.
摘要翻译：本发明提供一种具有高耐磨性和优异的耐剥离性并且可以防止长时间剥离基材的硬膜和形成有硬膜的硬质成膜体。硬膜（8）具有由主要由Cr和WC组成的第一混合层（8a）构成的结构，其直接形成在内环（2）（基材）的滚道表面（2a）上滚动轴承，形成在第一混合层（8a）上的主要由WC和DLC组成的第二混合层（8b）和主要由DLC组成的表面层（8c），其形成在第二混合层层（8b）。在第一混合层（8a）中，Cr的含量率连续或逐步降低，并且DLC的含量率从基材侧朝向第二混合层（8b）的一侧连续或逐步增加。在第二混合层（8b）中，WC的含量率连续或逐步降低，并且DLC的含量率从第一混合层（8a）的一侧向表面层（8c）的侧面连续或逐步增加）。第二混合层（8b）中的氢含量为10〜45原子％。

9. 发明公开

EP2749666A3 Thermo-mechanical process for martensitic bearing steels and steel bearing component 有权
标题翻译：对于马氏体轴承钢和钢轴承部件的热机械处理
公开(公告)号：EP2749666A3
公开(公告)日：2014-07-16
申请号：EP13198775.2
申请日：2013-12-20
申请人： Aktiebolaget SKF
发明人： McCoy, Bryan A. , Zimmerman, Gregory A. , Anthony, Don , Ragen, Mark A.
IPC分类号： C22C38/00 , C23C8/02 , C22C38/18 , C23C30/00
CPC分类号： C21D9/36 , C21D7/06 , C21D9/40 , C22C38/00 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/30 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/52 , C23C8/02 , C23C8/26 , C23C8/36 , F16C33/121 , F16C33/32 , F16C33/34 , F16C33/62 , F16C33/64 , F16C2202/04 , F16C2204/66 , F16C2204/70 , F16C2223/08 , F16C2223/14
摘要： A method for treating a steel bearing component includes subjecting the steel bearing component to a scouring treatment to impart compressive residual stress to a surface region thereof and then subsequently nitriding the steel bearing component. The resulting steel bearing component exhibits a nitrided case depth of about 0.0508-0.3556 mm and a compressive residual stress value greater than -827 MPa is achieved at a depth of 0.05 mm and -138 MPa to a minimum depth of 0.25 mm. The steel bearing component may be a race and/or a rolling element, such as a ball.

10. 发明公开

EP2608920A1 FLASH-BUTT WELDED BEARING COMPONENT 审中-公开
标题翻译：闪光对焊焊接轴承部件
公开(公告)号：EP2608920A1
公开(公告)日：2013-07-03
申请号：EP11801226.9
申请日：2011-05-27
申请人： Aktiebolaget SKF
发明人： LUND, Thore , RECINA, Viktor
IPC分类号： B23K11/04 , C22C38/22 , F16C33/00
CPC分类号： F16C33/64 , B21C37/0826 , B23K11/04 , B23K2103/04 , C22C38/02 , C22C38/04 , C22C38/22 , F16C33/121 , F16C33/62 , F16C2204/66 , F16C2226/36 , Y10T403/477
摘要： Bearing component (10) comprising steel and at least one flash butt weld joint. The steel comprises, by weight, max 20 ppm S and max 15 ppm O and in that said steel includes sulphide inclusions and less than 5% of the sulphide inclusions contain encapsulated or embedded oxide inclusions.
摘要翻译：轴承部件（10）包括钢和至少一个闪光对焊接头。该钢按重量计包含最大20ppm的S和最大15ppm的O，并且所述钢包括硫化物夹杂物，并且少于5％的硫化物夹杂物含有包封或嵌入的氧化物夹杂物。

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