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1. 发明申请

US20220411891A1 ROLLING BEARING 有权
公开(公告)号：US20220411891A1
公开(公告)日：2022-12-29
申请号：US17764018
申请日：2020-09-09
申请人： NTN Corporation
发明人： Takashi KAWAI , Chikara OHKI , Masahiro YAMADA
IPC分类号： C21D9/40 , C23C8/32 , C21D9/36 , C21D1/06 , F16C19/06 , F16C19/26 , F16C19/36 , F16C33/32 , F16C33/34 , F16C33/58 , F16C33/62 , F16C33/64 , C21D1/18 , C21D1/26
摘要： A rolling bearing is a tapered roller bearing, a cylindrical roller bearing, or a deep groove ball bearing including an inner ring, an outer ring, and a rolling element, each of the inner ring, the outer ring, and the rolling element being composed of a steel, the rolling bearing having a quench-hardened layer in at least one of an inner ring raceway surface of the inner ring, an outer ring raceway surface of the outer ring, and a rolling contact surface of the rolling element. A ratio of a total area of a plurality of martensite crystal grains in the quench-hardened layer is more than or equal to 70%. The plurality of martensite crystal grains are classified into a first group and a second group. An average grain size of the martensite crystal grains belonging to the first group is less than or equal to 0.97 μm.

2. 发明授权

US11286535B2 Heat treatment equipment and heat treatment method 有权
公开(公告)号：US11286535B2
公开(公告)日：2022-03-29
申请号：US16312388
申请日：2017-05-26
申请人： NTN CORPORATION
发明人： Tsuneaki Hiraoka , Yuuki Tabuchi , Shintaro Suzuki
IPC分类号： H05B6/36 , C21D9/00 , C21D9/36 , C21D1/10 , C21D1/42 , H05B6/06 , H05B6/10
摘要： Provided is a heat treatment apparatus (1), including: a conveying device (10), which is configured to convey a rod-shaped workpiece (W) at a predetermined velocity along an axial direction of the workpiece (W); and a heating device (2) including a heating coil (3) configured to inductively heat the workpiece (W) being conveyed to a quenching temperature, wherein the heating coil (3) includes a first heating section (3A) and a second heating section (3B), which are coupled to each other in series along the axial direction of the workpiece (W), and is electrically connected to a single high-frequency power supply (4), and wherein a coil pitch (D2) of the second heating section (3B) arranged relatively on a front side in a conveying direction for the workpiece (W) is larger than a coil pitch (D1) of the first heating section (3A) arranged relatively on a rear side in the conveying direction.

3. 发明申请

US20190270595A1 WORK PIECE CONVEYANCE JIG AND CONVEYANCE DEVICE PROVIDED WITH SAME, AND INDUCTION HEATING DEVICE 审中-公开
公开(公告)号：US20190270595A1
公开(公告)日：2019-09-05
申请号：US16334040
申请日：2017-09-07
申请人： NTN CORPORATION
发明人： Yuuki TABUCHI , Shintaro SUZUKI
IPC分类号： B65G33/04 , C21D1/10 , C21D9/36 , H05B6/10
摘要： A workpiece conveyance jig, which is formed of a threaded shaft made of a ceramic, includes an inner member, which is formed of a solid shaft having a constant diameter, and is configured to receive a rotational driving force, and an outer member, which has a hollow shaft-like shape, has a helical protrusion, and is mounted on an outer periphery of the inner member so as to be rotatable integrally with the inner member. The outer member includes a plurality of cylindrical bodies arranged in a row in an axial direction of the workpiece conveyance jig, and has a convex and concave fitting portion formed between two adjacent ones of the plurality of cylindrical bodies, which is configured to engage the two adjacent cylindrical bodies with each other in a direction of rotation of the inner member.

4. 发明授权

US08980022B2 Case hardening steel, carburized component, and manufacturing method of case hardening steel 有权
标题翻译：表面硬化钢，渗碳部件和表面硬化钢的制造方法
公开(公告)号：US08980022B2
公开(公告)日：2015-03-17
申请号：US13061023
申请日：2010-01-13
申请人： Kei Miyanishi , Masayuki Hashimura , Shuuji Kozawa , Manabu Kubota , Tatsuro Ochi
发明人： Kei Miyanishi , Masayuki Hashimura , Shuuji Kozawa , Manabu Kubota , Tatsuro Ochi
IPC分类号： C21D9/52 , C21D8/02 , C21D9/00 , C22C38/08 , C22C38/44 , C22C38/22 , C22C38/00 , C23C8/32 , C23C8/26 , C23C8/30 , C23C8/24 , C23C8/20 , C22C38/02 , B21J1/02 , C21D6/00 , C21D9/32 , C21D9/36 , C21D9/38 , C21D9/40 , C22C38/04 , C22C38/06 , C22C38/28 , F16C33/62 , C21D1/32 , C21D1/58
CPC分类号： C22C38/02 , B21J1/02 , C21D1/32 , C21D1/58 , C21D6/002 , C21D8/0205 , C21D8/0226 , C21D8/0257 , C21D9/32 , C21D9/36 , C21D9/38 , C21D9/40 , C21D2211/004 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/06 , C22C38/28 , F16C33/62
摘要： This case hardening steel has a chemical composition including, by mass %: C: 0.1 to 0.6%; Si: 0.02 to 1.5%; Mn: 0.3 to 1.8%; P: 0.025% or less; S: 0.001 to 0.15%; Al: over 0.05 to 1.0%; Ti: 0.05 to 0.2%; N: 0.01% or less; and O: 0.0025% or less, and further including, by mass %, one or more of Cr: 0.4 to 2.0%, Mo: 0.02 to 1.5%, Ni: 0.1 to 3.5%, V: 0.02 to 0.5%, and B: 0.0002 to 0.005%, and the balance consisting of iron and unavoidable impurities.
摘要翻译：该硬化钢的化学成分按质量％计含有：C：0.1〜0.6％ Si：0.02〜1.5％ Mn：0.3〜1.8％ P：0.025％以下; S：0.001〜0.15％ Al：0.05〜1.0％ Ti：0.05〜0.2％ N：0.01％以下和O：0.0025％以下，进一步包括Cr：0.4〜2.0％，Mo：0.02〜1.5％，Ni：0.1〜3.5％，V：0.02〜0.5％中的一种或多种，B：：0.0002〜0.005％，余量由铁和不可避免的杂质组成。

5. 发明申请

US20140182747A1 Thermo-mechanical Process for Martensitic Bearing Steels 审中-公开
标题翻译：马氏体轴承钢的热机械工艺
公开(公告)号：US20140182747A1
公开(公告)日：2014-07-03
申请号：US14136049
申请日：2013-12-20
申请人： AKTIEBOLAGET SKF
发明人： Bryan A. McCoy , Gregory A. Zimmerman , Don L. Anthony , Mark A. Ragen
IPC分类号： C21D9/36 , C21D9/40 , C23C8/02
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 subsequently nitriding the steel bearing component 1. The resulting steel bearing component exhibits a nitrided case depth of about 0.002-0.014 inches and a compressive residual stress value greater than −120 ksi is achieved at a depth of 0.002 inches and −20 ksi to a minimum depth of 0.010″. The steel bearing component may be a race and/or a rolling element, such as a ball.
摘要翻译：一种用于处理钢轴承部件的方法包括对钢承载部件进行冲刷处理，以对其表面区域赋予压缩残余应力，并随后对钢轴承部件1进行氮化。所得到的钢轴承部件的氮化壳深度为约0.002 -0.014英寸，并且在0.002英寸和-20ksi的深度到达0.010“的最小深度处实现大于-120ksi的压缩残余应力值。钢轴承部件可以是比赛和/或滚动元件，例如球。

6. 发明申请

US20140099051A1 ROLLING SLIDING MEMBER, METHOD OF MANUFACTURING THE SAME, AND ROLLING BEARING 审中-公开
标题翻译：滚动滑动构件，其制造方法和滚动轴承
公开(公告)号：US20140099051A1
公开(公告)日：2014-04-10
申请号：US14041189
申请日：2013-09-30
申请人： JTEKT CORPORATION
发明人： Wataru YOSHIDA , Katsuhiko KIZAWA
IPC分类号： C21D9/36 , F16C33/36 , F16C33/62 , C23C8/32 , C21D9/40
CPC分类号： C21D9/36 , C21D9/40 , C22C38/00 , C23C8/32 , F16C19/388 , F16C33/366 , F16C33/62 , F16C33/64
摘要： A steel material which contains 0.16 to 0.19% of carbon by mass, 0.15 to 0.35% of silicon by mass, 0.20 to 1.55% of manganese by mass, and 2.5 to 3.2% of chromium by mass, of which remaining part is formed of iron and incidental impurities, and which contains 0.01 to 0.2% of nickel by mass as an incidental impurity and higher than or equal to 0.001% and lower than 0.15% of molybdenum by mass as an incidental impurity, and which has a hardenability index of higher than or equal to 5.4 is subjected to a carbonitriding step, a process annealing step, a quenching step, a tempering step and a finishing step. Thus, there is obtained a rolling sliding member made of the steel material, and having satisfactory corrosion resistance and crack resistance and having a sufficiently long useful life even under an environment where rust is easily formed.
摘要翻译：将含有0.16质量％至0.19质量％的碳，0.15质量％以上至0.35质量％的锰，质量计为0.20〜1.55质量％，质量为2.5质量％至3.2质量％的钢材，其余部分由铁杂质含量为0.01质量％以上且0.2质量％以下，作为附带杂质，高于或等于0.001质量％且低于0.15质量％的杂质杂质，其硬化指数高于进行碳氮共渗工序，工序退火工序，淬火工序，回火工序和精加工工序。因此，获得了由钢材制成的滚动滑动构件，并且具有令人满意的耐腐蚀性和抗裂性，并且即使在易于形成锈的环境下也具有足够长的使用寿命。

7. 发明授权

US06923576B2 Rolling bearing and belt continuously variable transmission 有权
标题翻译：滚动轴承和皮带无级变速器
公开(公告)号：US06923576B2
公开(公告)日：2005-08-02
申请号：US10414308
申请日：2003-04-16
申请人： Susumu Tanaka , Shinji Fujita , Hideyuki Uyama , Nobuaki Mitamura
发明人： Susumu Tanaka , Shinji Fujita , Hideyuki Uyama , Nobuaki Mitamura
IPC分类号： C21D9/36 , C21D9/40 , C22C38/04 , C22C38/18 , C23C8/20 , C23C8/30 , F16C33/32 , F16C33/62
CPC分类号： F16C33/64 , C21D9/36 , C21D9/40 , C22C38/04 , C22C38/18 , C23C8/20 , C23C8/30 , F16C33/32 , F16C2204/64 , F16C2240/54 , F16C2240/76 , F16C2361/63 , F16C2361/65 , Y10S384/913
摘要： A rolling bearing has the radius of curvature of the raceway on an inner ring and an outer ring is from not smaller than 50.1% to not greater than 51.9% of the diameter of the balls, and at least one of the compositions of the bearing is obtained by forming an alloy steel having a carbon (C) content of from not smaller than 0.50% to not greater than 0.90%, a chromium (Cr) content of from not smaller than 3.0% to not greater than 15.0%, a manganese (Mn) content of from not smaller than 0.10% to not greater than 2.0%, a silicon (Si) content of from not smaller than 0.10% to not greater than 2.0%, a molybdenum (Mo) content of zero or not greater than 2.0% by weight, and a vanadium (V) content of zero or not greater than 2.0%, by weight.
摘要翻译：滚动轴承在内圈上具有滚道的曲率半径，外圈的直径不小于球的直径的50.1％至不大于51.9％，并且轴承的组成中的至少一种为通过形成碳（C）含量为0.50％以上且0.90％以下的合金钢，铬（Cr）含量为3.0％以上且15.0％以下的锰， Mn）含量为0.10％以上且2.0％以下，硅（Si）含量为0.10％以上且2.0％以下，钼（Mo）含量为0以上且2.0以下重量％，钒（V）含量为零或不大于2.0％（重量）。

8. 发明授权

US6095692A Rolling bearing 失效
标题翻译：滚动轴承
公开(公告)号：US6095692A
公开(公告)日：2000-08-01
申请号：US227888
申请日：1999-01-11
申请人： Hiromichi Takemura
发明人： Hiromichi Takemura
IPC分类号： F16C33/32 , C21D9/36 , C21D9/40 , C22C38/00 , C22C38/28 , C22C38/50 , C23C8/22 , C23C8/32 , F16C33/30 , F16C33/34 , F16C33/62
CPC分类号： C21D9/40 , C22C38/28 , C22C38/50 , F16C33/30 , F16C33/62 , C21D9/36 , Y10S384/912
摘要： The present invention provides a rolling bearing comprising an inner ring, an outer ring and rolling elements as constituting members, wherein at least one of the members is formed by a steel material for bearing and has been subjected to carburizing or carbonitriding and titanium carbides or titanium carbonitrides having an average particle diameter of not more than 80 nm are dispersed in the surface and interior thereof, the steel material having an alloy composition composed of: C: 0.15 to 0.45% by weight; Si: 0.1 to 1.2% by weight; Mn: 0.2 to 1.5% by weight; Cr: 0.2 to 1.6% by weight; and Ti: 0.05 to 0.40% by weight. The rolling bearing is insusceptible to the occurrence of impressions particularly even in the presence of foreign matters, has excellent abrasion resistance, and is insusceptible to corrosion pitting (including hydrogen-induced crack) even under conditions that allow the occurrence of corrosion pitting in the presence of water.
摘要翻译：本发明提供一种滚动轴承，其包括内圈，外圈和作为构成构件的滚动元件，其中至少一个构件由用于轴承的钢材形成，并且已经进行渗碳或碳氮共渗和钛碳化物或钛平均粒径不大于80nm的碳氮化物分散在其表面和内部，具有由以下组成的合金组成的钢材：C：0.15至0.45重量％; Si：0.1〜1.2重量％ Mn：0.2〜1.5重量％ Cr：0.2〜1.6重量％和Ti：0.05〜0.40重量％。滚动轴承即使在外来物质的存在下也不易发生印模，具有优异的耐磨性，并且即使在允许存在腐蚀点蚀的条件下也不易受腐蚀点蚀（包括氢诱发的裂纹）的水。

9. 发明授权

US6071358A Rolling member and rolling device comprising the same 失效
标题翻译：滚动构件和包括该滚动构件的滚动装置
公开(公告)号：US6071358A
公开(公告)日：2000-06-06
申请号：US933966
申请日：1997-09-19
申请人： Shigeru Okita , Susumu Tanaka , Manabu Ohori , Koji Ueda , Akihiro Kiuchi
发明人： Shigeru Okita , Susumu Tanaka , Manabu Ohori , Koji Ueda , Akihiro Kiuchi
IPC分类号： C21D9/36 , C21D9/40 , C22C38/00 , C22C38/04 , C22C38/18 , F16C33/30 , F16C33/32 , F16C33/62
CPC分类号： F16C33/30 , C22C38/04 , C22C38/18 , F16C33/32 , F16C33/62 , F16C41/008 , C21D9/36 , C21D9/40 , Y10S148/906
摘要： At least one of the components of a rolling member used in a manner in which it is rolled or slid with a mated member is made of carbon steel containing 0.8%-0.9% by weight of C, 0.1%-0.7% by weight of Si, 0.5%-1.1% by weight of Mn, and 0.1%-0.6% by weight of Cr and Fe substantially in the remaining part, wherein an ideal critical diameter DI value calculated from the compositions is 1.5-4.0, and the retained austenite amount after hardened heat treatment is 8%-22% by volume. The value DI is determined by the following equation:DI=(0.311.times.C %.sup.0.498).times.(0.7.times.Si %+1).times.(3.33.times.Mn %+1).times.(2.16.times.Cr %+1)
摘要翻译：以与配合部件一起滚动或滑动的方式使用的滚动部件的至少一个部件由碳钢制成，所述碳钢含有0.8重量％〜0.9重量％的C，0.1重量％〜0.7重量％的Si ，0.5％-1.1重量％的Mn和0.1％-0.6重量％的Cr和Fe，其中由组合物计算出的理想临界直径DI值为1.5-4.0，残留奥氏体量硬化热处理后为8％-22％。值DI由以下等式确定：DI =（0.311×C％0.498）×（0.7×Si％+ 1）×（3.33×Mn％+ 1）×（2.16×Cr％+ 1）

10. 发明授权

US5292200A Ball-and-roller bearing 失效
标题翻译：滚珠轴承
公开(公告)号：US5292200A
公开(公告)日：1994-03-08
申请号：US82169
申请日：1993-06-28
申请人： Yoichi Matsumoto , Kenji Yamamura , Kousuke Nonaka
发明人： Yoichi Matsumoto , Kenji Yamamura , Kousuke Nonaka
IPC分类号： C21D9/36 , C21D9/40 , C23C8/38 , F16C33/30 , F16C33/62
CPC分类号： F16C33/30 , C21D9/40 , C23C8/38 , F16C33/62 , C21D9/36 , F16C33/64 , Y10S384/912 , Y10S384/913
摘要： At least one of the inner race, the outer race and rolling elements in the improved ball-and-roller bearing is made of an alloy steel that contains 0.1-1.2 wt % of C, 3.0-18.0 wt % of Cr, 0.01-1.5 wt % of Si, 0.3-1.5 wt % of Mn, up to 2.5 wt % of Mo, up to 0.002 wt % of O.sub.2 and up to 0.015 wt % of S and which is subjected to plasma-assisted carburization to such an extent that the relative surface carbon area is at least 15% the surface carbon concentration is in the range of 1.6-3.5 wt % and the amount of surface retained austenite is in the rang of 20 vol %-45 vol %. The bearing can work effectively for a prolonged lifetime even if it is placed under hostile conditions as exemplified by an increased areal pressure of load and entrance of foreign matter into lubricating oils.
摘要翻译：改进的滚珠轴承中的内圈，外圈和滚动元件中的至少一个由合金钢制成，其包含0.1-1.2重量％的C，3.0-18.0重量％的Cr，0.01-1.5 Si的重量百分数，Mn的0.3-1.5重量％，Mo的至多2.5重量％，至多0.002重量％的O 2和至多0.015重量％的S，并将其进行等离子体辅助渗碳至相对表面碳面积为至少15％，表面碳浓度在1.6-3.5重量％的范围内，表面残留奥氏体的量在20体积％-45体积％范围内。轴承可以长时间工作，即使它处于恶劣条件下，例如增加的负载面积压力和异物进入润滑油中。

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