公开(公告)号：US20160178009A1

公开(公告)日：2016-06-23

申请号：US14436761

申请日：2013-10-16

申请人： Daisuke SATO ,  Chikara OHKI

发明人： Daisuke SATO ,  Chikara OHKI

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

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, an inner ring, and a ball 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 defined as a region extending to a depth of not more than 20 μm from an outer ring raceway surface, an inner ring raceway surface, and a ball rolling surface, 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 μm2 in the surface layer region.

摘要翻译： 每个用作轴承部分的外圈，内圈和球都由含有0.95质量％以上且1.10质量％以下的碳，0.05质量％以上且小于0.3质量％的硅的钢制成 ，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。 表面层区域被定义为从外圈滚道表面，内圈滚道表面和滚珠滚动面延伸到不大于20μm深度的区域，所述表面层区域各自是轴承部分滚动接触的表面 另一部分的平均氮浓度为0.2质量％以上且0.7质量％以下。 在表面层区域中，每100μm2存在5个以上的直径为0.5μm以下的碳化物。

公开(公告)号：US20160131189A1

公开(公告)日：2016-05-12

申请号：US14896265

申请日：2014-05-28

申请人： Chikara OHKI ,  Yukio MATSUBARA ,  Daisuke SATO ,  Noriaki MIWA ,  NTN CORPORATION

发明人： Chikara OHKI ,  Yukio MATSUBARA ,  Daisuke SATO ,  Noriaki MIWA

IPC分类号： F16C33/62 ,  C22C38/42 ,  C22C38/04 ,  F16C33/64 ,  C22C38/00 ,  C21D9/40 ,  C21D1/06 ,  C23C8/32 ,  C22C38/44 ,  C22C38/02

CPC分类号： F16C33/62 ,  C21D1/06 ,  C21D9/40 ,  C21D2211/001 ,  C21D2211/004 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/42 ,  C22C38/44 ,  C23C8/32 ,  F16C19/06 ,  F16C33/32 ,  F16C33/64

摘要： A bearing component composed of steel which contains carbon not less than 0.95 mass % and not more than 1.1 mass %, silicon less than 0.3 mass %, manganese less than 0.5 mass %, sulfur less than 0.008 mass %, and chromium not less than 1.4 mass % and less than 1.6 mass % and is composed of remainder iron and an impurity and having a carbonitrided layer formed at a surface portion including a contact surface which is a surface in contact with other components is provided. An average concentration of nitrogen in the surface portion is not lower than 0.3 mass % and not higher than 0.6 mass % and variation in nitrogen concentration in the surface portion is not higher than 0.1 mass %. An amount of retained austenite in the surface portion is not greater than 8 volume %.

摘要翻译： 由含有0.95质量％以上1.1质量％以下的碳，小于0.3质量％的硅，小于0.5质量％的锰，小于0.008质量％的硫，小于等于0.008质量％的碳的钢构成的轴承部件， 质量％且小于1.6质量％，并且由剩余的铁和杂质组成，并且具有形成在包括与其它组分接触的表面的接触表面的表面部分处的碳氮共渗层。 表面部分的平均氮浓度不低于0.3质量％且不高于0.6质量％，表面部分的氮浓度变化不高于0.1质量％。 表面部分中的残余奥氏体量不大于8体积％。

公开(公告)号：US20120014635A1

公开(公告)日：2012-01-19

申请号：US13238889

申请日：2011-09-21

申请人： Chikara OHKI ,  Kazuhiro YAGITA ,  Takashi ITO ,  Hiroshi MORISHITA

发明人： Chikara OHKI ,  Kazuhiro YAGITA ,  Takashi ITO ,  Hiroshi MORISHITA

IPC分类号： F16C33/62 ,  C22C38/02 ,  F16C33/32

CPC分类号： F16C33/32 ,  C21D1/06 ,  C21D1/09 ,  C21D1/78 ,  C21D6/04 ,  C21D9/36 ,  C21D9/40 ,  C21D2211/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C23C8/26 ,  C23C8/38 ,  F16C33/34 ,  F16C33/62 ,  F16C2204/64 ,  F16D3/224 ,  F16D2250/00 ,  F16D2300/10 ,  Y02T50/67 ,  Y10T74/1836

摘要： An outer ring, an inner ring and a ball serving as mechanical components configuring a deep groove ball bearing are formed of steel containing at least 0.77 mass % and not more than 0.85 mass % of carbon, at least 0.01 mass % and not more than 0.25 mass % of silicon, at least 0.01 mass % and not more than 0.35 mass % of manganese, at least 0.01 mass % and not more than 0.15 mass % of nickel, at least 3.75 mass % and not more than 4.25 mass % of chromium, at least 4 mass % and not more than 4.5 mass % of molybdenum and at least 0.9 mass % and not more than 1.1 mass % of vanadium with a remainder consisting of iron and impurity, and have raceway/rolling contact surfaces, the surface being included in a region having a nitrogen enriched layer having a nitrogen concentration of at least 0.05 mass %, the nitrogen enriched layer having a carbon concentration and the nitrogen concentration, in total, of at least 0.82 mass % and not more than 1.9 mass %.

摘要翻译： 构成深沟球轴承的作为机械部件的外圈，内圈和球由含有至少0.77质量％且不大于0.85质量％的碳，至少0.01质量％且不大于0.25的钢形成 至少0.01质量％且不超过0.35质量％的锰，镍的至少0.01质量％且不大于0.15质量％，铬的至少3.75质量％且不大于4.25质量％ 至少4质量％且不超过4.5质量％的钼和至少0.9质量％且不超过1.1质量％的余量由铁和杂质构成的钒，并且具有轨道/滚动接触表面，该表面包括 在具有至少0.05质量％的氮浓度的氮富集层的区域中，具有碳浓度和氮浓度的富氮层总计为至少0.82质量％且不大于1.9质量％。

公开(公告)号：US20160003300A1

公开(公告)日：2016-01-07

申请号：US14767250

申请日：2014-02-03

申请人： Chikara OHKI

发明人： Chikara OHKI

IPC分类号： F16C33/64 ,  C21D9/40 ,  C21D1/06 ,  C22C38/00 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  F16C33/62 ,  C23C8/32

CPC分类号： F16C33/64 ,  C21D1/06 ,  C21D9/40 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C23C8/32 ,  C23C8/80 ,  F16C19/06 ,  F16C19/26 ,  F16C19/30 ,  F16C19/364 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62

摘要： Each of an outer race, an inner race and a ball as a bearing part is a bearing part made of JIS standard SUJ2 and having a carbonitrided layer formed in a surface thereof, wherein, after heat treatment at a heating temperature of 500° C. for a retention time of one hour is performed, a Vickers hardness at a position with a depth of 0.02×T+0.175 (mm) from the surface is higher than a Vickers hardness at a core portion, which is a region where the carbonitrided layer is not formed in a thickness direction of the bearing part, by not less than 80 HV, where T represents the time of carbonitriding treatment for forming the carbonitrided layer.

摘要翻译： 外圈，内圈和作为轴承部的球都是由JIS标准SUJ2制成并在其表面形成有碳氮共渗层的轴承部，其中，在加热温度为500℃下进行热处理后， 进行1小时的停留时间时，表面深度为0.02×T + 0.175（mm）的位置的维氏硬度高于作为碳氮共渗层的区域的芯部的维氏硬度 不能在轴承部的厚度方向上形成不低于80HV，其中T表示用于形成碳氮共渗层的碳氮共渗处理时间。

公开(公告)号：US20100232735A1

公开(公告)日：2010-09-16

申请号：US12785288

申请日：2010-05-21

申请人： Chikara OHKI ,  Tomoaki Goto

发明人： Chikara OHKI ,  Tomoaki Goto

IPC分类号： F16C33/38

CPC分类号： F16C33/62 ,  F16C19/00 ,  F16C19/06 ,  F16C33/30 ,  F16C33/32 ,  F16C33/64 ,  F16C2204/66 ,  F16C2223/16 ,  F16C2240/90 ,  F16C2380/26 ,  Y10S148/906 ,  Y10S384/912

摘要： A bearing for alternators and a bearing for pulleys for reducing hydrogen embrittlement or cracking is used when the bearing is in an environment having a severe condition, such as, when hydrogen is generated from grease or the like. The bearing includes a rolling element, an inner ring and an outer ring, and at least one of the rolling element, where the inner and outer rings have a nitrogen enriched layer containing austenite crystal grains having a grain size number exceeding 10.

摘要翻译： 当轴承处于严酷状态的环境中时，例如当从油脂等产生氢时，使用用于交流发电机的轴承和用于减少氢脆或裂纹的滑轮的轴承。 所述轴承包括滚动元件，内圈和外圈，以及所述滚动元件中的至少一个，所述内圈和所述外圈具有包含粒径数超过10的奥氏体晶粒的富氮层。

公开(公告)号：US20090245706A1

公开(公告)日：2009-10-01

申请号：US12410821

申请日：2009-03-25

申请人： Hiroshi MORISHITA ,  Takashi ITO ,  Chikage AKAI ,  Chikara OHKI ,  Kazuhiro YAGITA

发明人： Hiroshi MORISHITA ,  Takashi ITO ,  Chikage AKAI ,  Chikara OHKI ,  Kazuhiro YAGITA

IPC分类号： F16C33/62

CPC分类号： F16C33/64 ,  F16C19/06 ,  F16C19/26 ,  F16C33/3806 ,  F16C33/583 ,  F16C2360/23

摘要： An outer ring and an inner ring of a rolling bearing are constituted of steel containing 0.77 to 0.85% of carbon, 0.01 to 0.25% of silicon, 0.01 to 0.35% of manganese, 0.01 to 0.15% of nickel, 3.75 to 4.25% of chromium, 4 to 4.5% of molybdenum and 0.9 to 1.1% of vanadium with the rest consisting of iron and impurities, a nitrogen-enriched layer having a nitrogen concentration of at least 0.05 mass % is formed on a region including a rolling surface, and the total of a carbon concentration and the nitrogen concentration in the nitrogen-enriched layer is at least 0.82 mass % and not more than 1.9 mass %. A DLC coating layer is arranged on a region including an outer ring contact surface.

摘要翻译： 滚动轴承的外圈和内圈由含有0.77〜0.85％的碳，0.01〜0.25％的硅，0.01〜0.35％的锰，0.01〜0.15％的镍，3.75〜4.25％的铬， ，4〜4.5％的钼和0.9〜1.1％的钒，其余由铁和杂质构成，氮含量为0.05质量％以上的富氮层形成在包括滚动面的区域上， 氮富集层中的碳浓度和氮浓度的合计为至少0.82质量％且不大于1.9质量％。 DLC涂层布置在包括外环接触表面的区域上。