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    METHOD FOR MANUFACTURING RACEWAY MEMBER, METHOD FOR MANUFACTURING VALVE TRAIN AND RACEWAY MEMBER
    1.
    发明申请
    METHOD FOR MANUFACTURING RACEWAY MEMBER, METHOD FOR MANUFACTURING VALVE TRAIN AND RACEWAY MEMBER 审中-公开
    制造赛车会员的方法，制造阀门火车和赛车会员的方法

    公开(公告)号：US20090276992A1

    公开(公告)日：2009-11-12

    申请号：US12373379

    申请日：2007-06-11

    申请人： Kikuo Maeda ,  Hirokazu Nakashima

    发明人： Kikuo Maeda ,  Hirokazu Nakashima

    IPC分类号： B23P11/00 ,  C23C8/32

    CPC分类号： F16C33/64 ,  C21D1/06 ,  C21D1/09 ,  C21D1/10 ,  C21D9/40 ,  C23C8/32 ,  C23C8/80 ,  F01L1/146 ,  F01L1/181 ,  F01L1/185 ,  F01L1/20 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2105/00 ,  F01L2800/18 ,  F16C19/46 ,  F16C2360/18 ,  Y02P10/253 ,  Y10T29/49826

    摘要： A method for manufacturing a raceway member, in which a hardness of a region to be plastically deformed is controllable in a stable manner and a sufficient rolling contact fatigue life is ensured by making a hardness of a region including a raceway surface sufficiently high, while suppressing increase in the manufacturing cost, includes a steel member preparation step, a heat treatment step, and a finishing step. The heat treatment step includes: a carbonitriding step, in which the steel member is heated to a carbonitriding temperature, which is a temperature not lower than A1 point, and carbonitrided; a temperature holding step, in which the steel member is cooled from the carbonitriding temperature to a temperature range between not lower than a temperature 100° C. below A1 point and lower than A1 point and is held in the temperature range for not less than 60 minutes and not more than 180 minutes; and a induction hardening step, in which the high hardness region in the steel member including a region to become a raceway surface of the raceway member is induction hardened, without quench hardening of a low hardness region which is a region other than the high hardness region.

    摘要翻译： 一种用于制造滚道部件的方法，其中通过使包括滚道表面的区域的硬度足够高，同时抑制，可以稳定地控制塑性变形区域的硬度并且确保足够的滚动接触疲劳寿命 增加制造成本，包括钢构件制备步骤，热处理步骤和精加工步骤。 热处理工序包括：将碳构件加热至不低于A1点的温度的碳氮共渗温度并碳氮共渗的碳氮共渗工序; 温度保持步骤，其中钢构件从碳氮共渗温度冷却至不低于A1点且低于A1点的温度100℃的温度范围，并保持在不小于60℃的温度范围内 分钟不超过180分钟; 以及感应淬火工序，其中包括成为轨道构件的轨道面的区域的钢构件的高硬度区域被感应硬化，而不是高硬度区域以外的区域的低硬度区域的淬火硬化 。

    Heat Treatment System
    5.
    发明申请
    Heat Treatment System 审中-公开
    热处理系统

    公开(公告)号：US20070194504A1

    公开(公告)日：2007-08-23

    申请号：US10570145

    申请日：2004-10-08

    申请人： Hirokazu Nakashima ,  Kikuo Maeda

    发明人： Hirokazu Nakashima ,  Kikuo Maeda

    IPC分类号： C21D1/10

    CPC分类号： C22C38/44 ,  C21D1/10 ,  C21D1/18 ,  C21D1/78 ,  C21D9/40 ,  C22C38/02 ,  C22C38/04 ,  C22C38/46 ,  F16C33/64 ,  F16C2240/18 ,  Y02P10/253

    摘要： A nitrogen enriched layer is formed in a primary heat treatment, and requenching is conducted in a secondary heat treatment, while the heat treatment efficiency is improved across the entire system. In a primary heat treatment device 1, a bearing component is heated in a heater 11 at a temperature exceeding the A1 transformation point, and is then cooled in a cooler 12 to a temperature less than the A1 transformation point, thus forming a nitrogen enriched layer at the surface of the component. The bearing component that has undergone primary heat treatment is then subjected to high frequency heating in a heater 21 of a secondary heat treatment device 2, at a temperature exceeding the A1 transformation point, and is then cooled in a cooler 22 to a temperature less than the A1 transformation point. Following cooling by the cooler 22, the component is tempered using high frequency heating.

    摘要翻译： 在一次热处理中形成富氮层，并且在二次热处理中进行再次化，同时整个系统的热处理效率提高。 在一次热处理装置1中，轴承部件在加热器11中以超过A1相变点的温度加热，然后在冷却器12中冷却至低于A1相变点的温度，由此形成富氮层 在组件的表面。 然后，在二次热处理装置2的加热器21中，在超过A1相变点的温度下对经过一次热处理的轴承部件进行高频加热，然后在冷却器22中冷却至小于 A1转换点。 在通过冷却器22冷却之后，使用高频加热来对组件进行回火。

    Rolling bearings and gear shaft support device
    6.
    发明授权
    Rolling bearings and gear shaft support device 有权
    滚动轴承和齿轮轴支撑装置

    公开(公告)号：US06423158B1

    公开(公告)日：2002-07-23

    申请号：US09461187

    申请日：1999-12-15

    申请人： Kikuo Maeda ,  Hirokazu Nakashima ,  Akio Okayama

    发明人： Kikuo Maeda ,  Hirokazu Nakashima ,  Akio Okayama

    IPC分类号： C23C832

    CPC分类号： F16C19/364 ,  B60K17/16 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/22 ,  C23C8/32 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16C2240/54 ,  F16C2361/61

    摘要： A roller bearing which can sufficiently ensure an endurance life of rollers even under conditions where debris contamination and temperature rise are large. As the material for an outer ring, inner ring and tapered rollers, a steel in which the Si and-Mn contents are increased is used, and after it has been treated to carbo-nitriding, it is quenched to adjust the amount of retained austenite in the carbo-nitrided layer formed on the surface layer of each part to 20-50 vol %. Thus, it is possible to prevent surface peeling resulting from initiation and propagation of cracks,. thereby greatly improving the endurance life of the rolling bearing under conditions in which debris contamination or temperature rise at bearing portions is large.

    摘要翻译： 滚子轴承即使在碎屑污染和温度升高的情况下也能充分保证滚筒的耐用寿命。 作为外圈，内圈和圆锥滚子的材料，使用其中Si和Mn含量增加的钢，并且在经过碳氮化处理之后，将其淬火以调节残余奥氏体的量 在每个部分的表面层上形成的碳氮化层为20-50体积％。 因此，可以防止由于裂纹的引发和扩展而导致的表面剥离。 从而大大提高滚动轴承在轴承部的碎屑污染或温度升高的条件下的耐久寿命。

    Wheel support bearing assembly and manufacturing method thereof
    9.
    发明授权
    Wheel support bearing assembly and manufacturing method thereof 有权
    轮支撑轴承组装及其制造方法

    公开(公告)号：US07909517B2

    公开(公告)日：2011-03-22

    申请号：US12068866

    申请日：2008-02-12

    申请人： Hisashi Ohtsuki ,  Kikuo Maeda

    发明人： Hisashi Ohtsuki ,  Kikuo Maeda

    IPC分类号： F16C13/00 ,  B21D53/10

    CPC分类号： B60B27/0094 ,  B60B27/0005 ,  B60B27/0026 ,  Y10T29/49643 ,  Y10T29/49679

    摘要： A wheel support bearing assembly with a hub axle of enhanced strength and a durability under a rotational bending condition as well as weight reduction, and without changing a shape and a dimension of a wheel mounting flange nor deteriorating a surface runout, and a manufacturing method thereof. A surface hardness is set to 20 HRC or more and than 35 HRC or less by applying an air cooling or a thermal refinement after hot forging a raw material of the hub axle, and a shot peening treatment is applied to an inner diameter portion of the hub axle.

    摘要翻译： 一种车轮支承轴承组件，其具有在旋转弯曲状态下具有增强强度和耐久性的轮毂轴以及重量减轻，并且不改变车轮安装凸缘的形状和尺寸，也不会使表面跳动劣化;以及其制造方法 。 通过在对轮毂轴的原料进行热锻后进行空气冷却或热精炼，将表面硬度设定为20HRC以上且35HRC以下，并且对轮毂的内径部进行喷丸硬化处理 轴。