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    Bearing's component, heat treatment method thereof, heat treatment apparatus, and rolling bearing
    3.
    发明授权
    Bearing's component, heat treatment method thereof, heat treatment apparatus, and rolling bearing 有权
    轴承部件，其热处理方法，热处理装置和滚动轴承

    公开(公告)号：US08002907B2

    公开(公告)日：2011-08-23

    申请号：US10897016

    申请日：2004-07-23

    申请人： Chikara Ohki

    发明人： Chikara Ohki

    IPC分类号： C23C8/32

    CPC分类号： C23C8/32 ,  C21D1/18 ,  C21D1/78 ,  C21D9/36 ,  C21D9/40 ,  C23C8/80 ,  F16C2240/90

    摘要： Obtain a bearing's component, a heat treatment method thereof, and a rolling bearing having a long life against rolling contact fatigue and high anti-crack strength, and suppressed long-term dimensional variation rate. The bearing's component is carbonitrided at a carbonitriding temperature higher than an A1 transformation point of steel for the bearing's component and then cooled to a temperature lower than the A1 transformation point, and subsequently, using a heat treatment apparatus that successively moves and heats each individual bearing's component, reheated to a range of quenching temperature of no less than the A1 transformation point and less than the carbonitriding temperature to be quenched.

    摘要翻译： 获得轴承的部件，其热处理方法以及滚动接触疲劳寿命长和抗裂纹强度高的滚动轴承，并且抑制长期的尺寸变化率。 该轴承的部件在高于用于轴承部件的钢的A1相变点的碳氮共渗温度下碳氮共渗，然后冷却至低于A1相变点的温度，随后使用热处理设备，其连续地移动和加热每个轴承的 重新加热至不低于A1相变点的淬火温度范围，并且小于待淬火的碳氮共渗温度。

    CARBONITRIDING METHOD, MACHINERY COMPONENT FABRICATION METHOD, AND MACHINERY COMPONENT
    4.
    发明申请
    CARBONITRIDING METHOD, MACHINERY COMPONENT FABRICATION METHOD, AND MACHINERY COMPONENT 有权
    碳化方法，机械部件制造方法和机械部件

    公开(公告)号：US20100154937A1

    公开(公告)日：2010-06-24

    申请号：US12296054

    申请日：2007-04-03

    申请人： Chikara Ohki

    发明人： Chikara Ohki

    IPC分类号： C23C8/32 ,  C22C38/00

    CPC分类号： C21D9/40 ,  C21D1/06 ,  C21D1/74 ,  C21D1/76 ,  C21D9/32 ,  C21D9/36 ,  C21D11/00 ,  C23C8/30 ,  C23C8/32 ,  F16C33/64

    摘要： A carbonitriding method that can improve the nitrogen permeating rate to render the carbonitriding process effective includes an atmosphere control step (50), and a heating pattern control step (60). The atmosphere control step (50) includes an undecomposed NH3 partial pressure control step (51), and a CO/CO2 partial pressure control step (53). The undecomposed NH3 partial pressure control step (51) and the CO/CO2 partial pressure control step (53) are carried out in the atmosphere control step (50) such that ac* defined by the following equation (1) is at least 0.88 and not more than 1.27, and α defined by equation (2) is at least 0.012 and not more than 0.020, where PN is the undecomposed ammonia partial pressure and PH is the hydrogen partial pressure in the heat treatment furnace, wherein a c * = ( Pco ) 2  K × Pco 2 ( 1 ) PCO: partial pressure of carbon dioxide (atm), PCO2: partial pressure of carbon dioxide (atm) K: equlibrium constant at +CO22CO α = P N 0.006 × ( P H ) 3 2 × ( 1.877 - 1.055 × a c * ) 100 ( 2 )

    摘要翻译： 可以提高氮渗透速度使碳氮共渗工艺有效的碳氮共渗方法包括气氛控制步骤（50）和加热模式控制步骤（60）。 气氛控制步骤（50）包括未分解的NH 3分压控制步骤（51）和CO / CO 2分压控制步骤（53）。 未分解的NH 3分压控制步骤（51）和CO / CO 2分压控制步骤（53）在气氛控制步骤（50）中进行，使得由下式（1）定义的ac *为至少0.88， 不超过1.27，由式（2）定义的α为0.012且不大于0.020，其中PN为未分解的氨分压，PH为热处理炉中的氢分压，其中ac * =（Pco ）2 K×Pco 2（1）PCO：二氧化碳的分压（atm），PCO2：二氧化碳的分压（atm）K：CCO + CO22CO的平衡常数α= PN 0.006×（PH）3 2×（1.877-1.055×ac *）100（2）

    Transmission component, method of manufacturing the same, and tapered roller bearing
    5.
    发明授权
    Transmission component, method of manufacturing the same, and tapered roller bearing 有权
    传动部件，制造方法和圆锥滚子轴承

    公开(公告)号：US07682087B2

    公开(公告)日：2010-03-23

    申请号：US10787221

    申请日：2004-02-27

    申请人： Kouichi Okugami ,  Yoshinori Muramatsu ,  Chikara Ohki ,  Michio Hori

    发明人： Kouichi Okugami ,  Yoshinori Muramatsu ,  Chikara Ohki ,  Michio Hori

    IPC分类号： F16C33/58 ,  F16C33/00

    CPC分类号： F16C33/64 ,  C23C8/32 ,  F16C33/32 ,  F16C33/34 ,  F16H57/021

    摘要： A transmission component is incorporated into a transmission in which an input shaft, an output shaft, or a gear is rotatably supported by a rolling bearing. The component has a nitriding layer at a surface layer and an austenite grain with a grain size number falling within a range exceeding 10. This provides a transmission component having an increased anti-crack strength, enhanced dimensional stability, and a long fatigue life. A method of manufacturing such a transmission component and a tapered roller bearing are also provided.

    摘要翻译： 传动部件被结合到传动装置中，输入轴，输出轴或齿轮由滚动轴承可旋转地支撑。 该组分在表面层具有氮化层，并且晶粒数落在超过10的范围内的奥氏体晶粒。这提供了具有增加的抗裂纹强度，增强的尺寸稳定性和长的疲劳寿命的透射组分。 还提供了制造这种传动部件和圆锥滚子轴承的方法。

    Ball-and-Roller Bearing
    6.
    发明申请
    Ball-and-Roller Bearing 审中-公开
    滚珠轴承

    公开(公告)号：US20070269336A1

    公开(公告)日：2007-11-22

    申请号：US10574567

    申请日：2004-09-30

    申请人： Chikara Ohki ,  Kikuo Maeda

    发明人： Chikara Ohki ,  Kikuo Maeda

    IPC分类号： C22C38/50 ,  C21D9/40 ,  C22C38/08 ,  C22C38/18 ,  C22C38/22 ,  C22C38/46

    CPC分类号： C22C38/40 ,  C21D9/40 ,  C21D2201/00 ,  C22C38/02 ,  C22C38/04

    摘要： Ball-and-roller bearing parts are alloyed with alloyed with 0.6% to 1.3% by weight of C, 0.3% to 3.0% by weight of Si, 0.2% to 1.5% by weight of Mn, 0.03% by weight or less of P, 0.03% by weight or less of S, 0.3% to 5.0% by weight of Cr, 0.1% to 3.0% by weight of Ni, 0.050% by weight or less of Al, 0.003% by weight or less of Ti, 0.0015% by weight or less of O, and 0.015% by weight or less of N with the remainder being made up of Fe and inevitable impurities. The part has a nitrogen-enriched layer. The austenite crystals of the steel have a grain size number of greater than 10.

    摘要翻译： 滚珠轴承部件与C：0.6〜1.3重量％，Si：0.3〜3.0重量％，Mn：0.2〜1.5重量％，P：0.03重量％以下， ，0.03重量％以下的S，0.3〜5.0重量％的Cr，0.1〜3.0重量％的Ni，0.050重量％以下的Al，0.003重量％以下的Ti，0.0015质量％ 以下，N为0.015重量％以下，余量由Fe和不可避免的杂质构成。 该部分具有富氮层。 钢的奥氏体晶体的晶粒数大于10。

    Constant velocity universal joint and method of manufacturing the same
    7.
    发明授权
    Constant velocity universal joint and method of manufacturing the same 失效
    恒速万向节及其制造方法

    公开(公告)号：US07270607B2

    公开(公告)日：2007-09-18

    申请号：US10857982

    申请日：2004-06-02

    申请人： Hiroshi Murakami ,  Chikara Ohki

    发明人： Hiroshi Murakami ,  Chikara Ohki

    IPC分类号： F16D3/205

    CPC分类号： C23C8/32 ,  C21D1/78 ,  C21D9/0068 ,  C21D9/40 ,  C23C8/80 ,  F16D3/2055 ,  Y10S464/905

    摘要： To provide a constant velocity universal joint having a high resistance to cracking, a high dimensional stability and an excellent rolling fatigue life, the constant velocity universal joint includes an outer coupling member (5), an inner coupling member such as a tripod member (2), and a drive transmitting member such as rollers (7) operatively interposed between the outer and inner coupling members (5 and 2). At least one of the outer coupling member (5), the tripod member (2) and the rollers (7) has a carbonitrided layer and, at the same time, an austenite grain size is greater than the grade of No. 10.

    摘要翻译： 为了提供具有高抗开裂性，高尺寸稳定性和优异的滚动疲劳寿命的等速万向接头，等速万向接头包括外联接构件（5），诸如三脚架构件（2）的内联接构件 ）和可操作地插入在所述外联接构件（5和2）之间的诸如辊（7）的驱动传递构件。 外联接构件（5），三球架构件（2）和滚子（7）中的至少一个具有碳氮共渗层，同时奥氏体晶粒尺寸大于10号的等级。

    Heat treatment furnace
    9.
    发明授权
    Heat treatment furnace 有权
    热处理炉

    公开(公告)号：US08444912B2

    公开(公告)日：2013-05-21

    申请号：US12675958

    申请日：2008-06-19

    申请人： Chikara Ohki

    发明人： Chikara Ohki

    IPC分类号： C23C8/32

    CPC分类号： C23C8/00 ,  C21D1/06 ,  C21D1/76 ,  C21D9/40 ,  C23C8/06 ,  F27B9/04 ,  F27D7/06 ,  F27D21/00

    摘要： A heat treatment furnace that allows the atmosphere in the heat treatment furnace to be controlled with favorable accuracy includes a second heating zone identified as a reaction chamber, having a floor belt to hold a workpiece, and an atmosphere collect pipe having an opening in the second heating zone to collect an atmosphere in the second heating zone through the opening. The atmosphere collect pipe is installed to allow the distance between the opening and the floor belt to be modified.

    摘要翻译： 能够以良好的精度控制热处理炉中的气氛的热处理炉包括：被识别为反应室的第二加热区，具有用于保持工件的地板带，以及在第二加热区中具有开口的气氛收集管 加热区以通过开口收集第二加热区中的气氛。 大气采集管被安装以允许开口和地板带之间的距离被修改。

    Mechanical component and rolling bearing
    10.
    发明授权
    Mechanical component and rolling bearing 有权
    机械部件和滚动轴承

    公开(公告)号：US08337089B2

    公开(公告)日：2012-12-25

    申请号：US12744665

    申请日：2008-11-21

    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： F16C33/32 ,  F16C33/58 ,  C23C8/26

    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％。