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    Ultrasonic detecting method for bearing ring
    1.
    发明授权
    Ultrasonic detecting method for bearing ring 有权
    轴承圈超声波检测方法

    公开(公告)号：US6065343A

    公开(公告)日：2000-05-23

    申请号：US320448

    申请日：1999-05-27

    申请人： Akihiro Kiuchi ,  Kikuaki Kamamura ,  Manabu Ohori

    发明人： Akihiro Kiuchi ,  Kikuaki Kamamura ,  Manabu Ohori

    IPC分类号： G01N29/04 ,  G01N29/00

    CPC分类号： G01N29/043 ,  G01N2291/015 ,  G01N2291/0226 ,  G01N2291/0231 ,  G01N2291/0234 ,  G01N2291/0289 ,  G01N2291/0421 ,  G01N2291/0422 ,  G01N2291/044 ,  G01N2291/056 ,  G01N2291/2636 ,  G01N2291/2696

    摘要： In an ultrasonic detecting method for a bearing ring in which a bearing ring 2 and an ultrasonic detection probe 3 are disposed within ultrasonic transmission medium such as water, then ultrasonic wave is transmitted from the ultrasonic detection probe 3 to the bearing ring 2, and a defect of the bearing ring 2 is detected on the basis of an ultrasonic wave echo reflected from the bearing ring 2, wherein at least a defect in a range from the surface of the bearing ring 2 to a position beneath by 2 mm from the surface of the bearing ring which is deeper than a maximum shearing stress position of the bearing ring 2 is detected by an angle beam method with an incident angle in a range of 10 to 30.degree., preferably in a range of 25 to 30.degree., and a defect in a range deeper than the range detected by the angle beam method is detected by a normal beam method with an incident angle in a range of 0 to 10.degree., preferably in a range of 0 to 5.degree., thereby to detect a defect in the entire section of the bearing ring 2.

    摘要翻译： 另外，在超声波传感介质例如水中设置有轴承环2和超声波检测用探针3的轴承环的超声波检测方法中，超声波从超声波检测用探针3传递到轴承环2， 基于从轴承环2反射的超声波回波检测轴承环2的缺陷，其中至少从轴承环2的表面到距离轴承环2的表面2mm以下的位置的缺陷 通过角入射角在10〜30°，优选在25〜30°的范围内的角束法检测比承载环2的最大剪切应力位置更深的轴承环，并且缺陷 在通过角度束法检测的范围内的范围内，通过入射角在0〜10°的范围内，优选在0〜5°的范围内的通常光束法检测，从而检测出 整个教派 在轴承圈2上。

    Rolling bearing
    2.
    发明授权
    Rolling bearing 失效
    滚动轴承

    公开(公告)号：US06051082A

    公开(公告)日：2000-04-18

    申请号：US9688

    申请日：1998-01-20

    申请人： Shigeru Okita ,  Manabu Ohori ,  Satoshi Kadokawa ,  Akihiro Kiuchi ,  Akira Iida

    发明人： Shigeru Okita ,  Manabu Ohori ,  Satoshi Kadokawa ,  Akihiro Kiuchi ,  Akira Iida

    IPC分类号： C21D6/00 ,  C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/18 ,  F16C33/32 ,  F16C33/34 ,  C22C38/02

    CPC分类号： C21D9/36 ,  C21D6/00 ,  F16C33/32 ,  F16C33/34 ,  C21D2211/003 ,  Y10S148/906

    摘要： A rolling bearing includes a rolling element made of a steel containing 0.9 to 1.1 wt. % C, 0.1 to 0.5 wt. % Si, 0.2 to 0.8 wt. % Mn, 1.0 to 1.8 wt. % Cr, with the balance being Fe and inevitable impurities. In the rolling bearing at least the surface of the rolling element includes carbides having an area fraction of 5% to 15%; of these carbides, carbides having an averaged particle diameter of 0.5 .mu.m or more share 50% or more of the area fraction of all the carbides; and of the carbides, carbides having an averaged particle diameter of 1 .mu.m or more share 2% or less of the area fraction of all the carbides; and wherein the rolling element has at least a Vickers surface hardness HV of 750 to 900.

    摘要翻译： 滚动轴承包括由含有0.9〜1.1重量％的钢制成的滚动元件。 ％C，0.1〜0.5wt。 ％Si，0.2〜0.8wt。 ％Mn，1.0〜1.8wt。 ％Cr，余量为Fe和不可避免的杂质。 在滚动轴承中，至少滚动体的表面包括面积分数为5％〜15％的碳化物; 的这些碳化物，平均粒径为0.5μm以上的碳化物占所有碳化物的面积分率的50％以上; 平均粒径为1μm以上的碳化物，碳化物占所有碳化物的面积分率的2％以下; 并且其中所述滚动元件具有750至900的至少维氏硬度HV。

    Rolling bearing
    4.
    发明授权
    Rolling bearing 失效

    公开(公告)号：US06287010B1

    公开(公告)日：2001-09-11

    申请号：US09428792

    申请日：1999-10-28

    申请人： Akihiro Kiuchi ,  Manabu Ohori

    发明人： Akihiro Kiuchi ,  Manabu Ohori

    IPC分类号： F16C3358

    CPC分类号： F16C33/58 ,  G01M13/045 ,  G01N29/11 ,  G01N29/275 ,  G01N29/28 ,  G01N29/348 ,  G01N2291/0234 ,  G01N2291/0422 ,  G01N2291/044 ,  G01N2291/2634 ,  G01N2291/2696 ,  Y10S384/912

    摘要： In view of the fact that, when backup roll bearings which have been found satisfactory in the purity thereof in the sample evaluation through observations using a microscope are checked many times for the top surface layer portions of the raceway surfaces thereof according to an ultrasonic detecting method, on quite rare occasions, there can be found a bearing which contains one or more inclusions each having a size of as large as several hundreds &mgr;m, and such inclusions give rise to occurrence of a short-life bearing as a finished product, a range expressed by 2% Da depth×raceway surface is used as a test piece volume and the size of a non-metallic inclusion existing in the test piece volume is restricted to a length less than 500 &mgr;m, preferably, less than 100 &mgr;m. Here, the term “2% Da depth” means a depth up to 2% of a rolling element mean diameter from the surface of an inner or outer race of a bearing.

    Rolling bearing
    5.
    发明授权
    Rolling bearing 有权

    公开(公告)号：US06276210B1

    公开(公告)日：2001-08-21

    申请号：US09756217

    申请日：2001-01-09

    申请人： Akihiro Kiuchi ,  Manabu Ohori

    发明人： Akihiro Kiuchi ,  Manabu Ohori

    IPC分类号： G01N2900

    摘要： In view of the fact that, when backup roll bearings which have been found satisfactory in the purity thereof in the sample evaluation through observations using a microscope are checked many times for the top surface layer portions of the raceway surfaces thereof according to an ultrasonic detecting method, on quite rare occasions, there can be found a bearing which contains one or more inclusions each having a size of as large as several hundreds &mgr;m, and such inclusions give rise to occurrence of a short-life bearing as a finished product, a range expressed by 2% Da depth×raceway surface is used as a test piece volume and the size of a non-metallic inclusion existing in the test piece volume is restricted to a length less than 500 &mgr;m, preferably, less than 100 &mgr;m. Here, the term “2% Da depth” means a depth up to 2% of a rolling element mean diameter from the surface of an inner or outer race of a bearing.

    Rolling bearing
    6.
    发明授权
    Rolling bearing 失效
    滚动轴承

    公开(公告)号：US06592684B1

    公开(公告)日：2003-07-15

    申请号：US09647245

    申请日：2000-09-28

    申请人： Kenji Yamamura ,  Manabu Ohori

    发明人： Kenji Yamamura ,  Manabu Ohori

    IPC分类号： C21C3818

    CPC分类号： C22C38/18 ,  C21D1/25 ,  C21D9/36 ,  C21D9/40 ,  C23C8/22 ,  F16C33/30 ,  F16C33/62 ,  Y10S148/906 ,  Y10S384/912

    摘要： A rolling bearing having excellent corrosion resistance and having a long life for use in airplanes is provided. The constituent parts of the rolling bearing are made from an alloy steel containing Cr which is required for the improvement of a rolling contact fatigue life at a high temperature and is most effective for providing steels with corrosion resistance when 7.0% or more to 16% or less on a weight percent basis is provided. The amount of a residual austenite on the surface of the completed product is from 6% or more and, preferably, 35% or less by stabilizing the residual austenite.

    摘要翻译： 提供具有优异的耐腐蚀性并且在飞机上使用寿命长的滚动轴承。 滚动轴承的构成部件由含有Cr的合金钢制成，为了提高高温下的滚动疲劳寿命所需要的，并且对于在7.0％以上至16％以下的钢提供耐腐蚀性最有效时，或 较少以重量百分比为基础。 通过使残余奥氏体稳定化，成品表面残留奥氏体的量为6％以上，优选为35％以下。

    Rolling bearing
    7.
    发明授权
    Rolling bearing 失效
    滚动轴承

    公开(公告)号：US06250812B1

    公开(公告)日：2001-06-26

    申请号：US09108391

    申请日：1998-07-01

    申请人： Kouji Ueda ,  Manabu Ohori

    发明人： Kouji Ueda ,  Manabu Ohori

    IPC分类号： F16C1906

    CPC分类号： F16C33/30 ,  Y10S384/912 ,  Y10T29/479 ,  Y10T29/49689

    摘要： The present invention provides a rolling bearing having an excellent corrosion resistance and toughness which can fairly operate at a high rotary speed. At least the inner race is formed by a titanium alloy, and the rolling elements are formed by ceramics. Alternatively, at least one of the inner race and the outer race is formed by a &bgr; type titanium alloy. The percent cold working of the &bgr; type titanium alloy is predetermined to not less than 20% or a range of from 5 to 20%. The cold working is followed by shot peening. Further, the surface hardness Hv is predetermined to not less than 600. The volumetric ratio of residual &bgr; phase in the &bgr; type titanium alloy is predetermined to a range of from 30 to 80%.

    摘要翻译： 本发明提供一种滚动轴承，该滚动轴承具有优良的耐腐蚀性和韧性，能够以高转速进行相当的操作。 至少内圈由钛合金形成，滚动体由陶瓷形成。 或者，内圈和外座圈中的至少一个由β型钛合金形成。 β型钛合金的冷加工的百分比预定为不小于20％或5至20％的范围。 冷工作之后是喷丸硬化。 此外，表面硬度Hv预定为不小于600.β型钛合金中的残余β相的体积比预定为30至80％的范围。

    Rolling bearing and method of making the same
    8.
    发明授权
    Rolling bearing and method of making the same 失效
    滚动轴承及其制作方法

    公开(公告)号：US06530695B2

    公开(公告)日：2003-03-11

    申请号：US09864455

    申请日：2001-05-25

    申请人： Hisashi Kawamura ,  Yukio Ohura ,  Manabu Ohori ,  Susumu Tanaka

    发明人： Hisashi Kawamura ,  Yukio Ohura ,  Manabu Ohori ,  Susumu Tanaka

    IPC分类号： F16C3362

    CPC分类号： F16C33/4629 ,  F16C33/3806 ,  F16C33/385 ,  F16C33/4605 ,  F16C33/64 ,  F16C2326/43 ,  F16C2360/23 ,  F16C2361/61

    摘要： A fine nitride layer comprising a compound layer and a diffusion hardened layer of hardness being Hv900 or higher is formed, through a low temperature nitriding method at temperature in the range of 300 to 400° C., in a guiding part. The guiding part guides the circumferential surfaces of retainers 7a to 7c and is formed at any one part of inner ring raceways 3a to 3c and outer ring raceways 4a to 4c as well as the inner circumferential surfaces of the outer rings 5a to 5c, to thereby realize such rolling bearings at low cost, having excellent abrasion resistance, and good corrosion resistance, if needed.

    摘要翻译： 在引导部分中，通过低温氮化法在300〜400℃的温度范围内形成包含化合物层和硬度为Hv900以上的扩散硬化层的细小氮化物层。 引导部分引导保持器7a至7c的圆周表面，并且形成在内圈滚道3a至3c和外圈滚道4a至4c以及外圈5a至5c的内圆周表面的任何一部分上，从而 实现这种低成本的滚动轴承，具有优异的耐磨性，并且如果需要，具有良好的耐腐蚀性。

    Rolling bearing
    9.
    发明授权
    Rolling bearing 失效
    滚动轴承

    公开(公告)号：US5873956A

    公开(公告)日：1999-02-23

    申请号：US803882

    申请日：1997-02-21

    申请人： Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

    发明人： Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

    IPC分类号： C21D6/04 ,  C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/18 ,  C22C38/34 ,  F16C33/30 ,  F16C33/62 ,  C23C8/32

    CPC分类号： C21D9/40 ,  C22C38/18 ,  C22C38/34 ,  F16C33/30 ,  F16C33/62 ,  C21D6/04 ,  C21D9/36 ,  Y10S148/906

    摘要： In order to provide rolling bearings of high performance using case hardened stainless steels that are superior to the conventional martensite base stainless steels in terms of corrosion resistance, rolling fatigue strength and wear resistance and which also have high core toughness, at least one member of the rolling bearing selected from among the inner race, the outer race and the rolling elements is made of an alloy steel consisting essentially of less than 0.5 wt % C, 8.0 to 20.0 wt % Cr, 0.1 to 1.5 wt % Mn, 0.1 to 2.0 wt % Si and the balance of Fe and incidental impurity elements; the relationship between the C and Cr contents satisfies 0.04 Cr (wt %)-0.39.ltoreq.C (wt %).ltoreq.-0.05 Cr (wt %)+1.41; the bearing also has a surface layer that is formed by nitriding or carbonitriding at a temperature below Ac.sub.1, subsequent heating at a temperature of 900.degree. to 1,200.degree. C., hardening, a subzero treatment and tempering.

    摘要翻译： 为了提供耐腐蚀性，滚动疲劳强度和耐磨性方面优于传统马氏体不锈钢的表面硬化不锈钢的高性能滚动轴承，并且还具有高的芯部韧性，至少有一个部件 从内圈，外圈和滚动体中选择的滚动轴承由基本上由小于0.5重量％C，8.0重量％〜20.0重量％的Cr，0.1〜1.5重量％的Mn，0.1〜2.0重量％ ％Si和余量的Fe和杂质元素; C和Cr含量之间的关系满足0.04 Cr（wt％） - 0.39（C）（wt％）≤0.05Cr（wt％）+ 1.41; 轴承还具有通过在低于Ac1的温度下氮化或碳氮共渗形成的表面层，随后在900-1200℃的温度下加热，硬化，零度处理和回火。

    Rolling bearings
    10.
    发明授权
    Rolling bearings 失效
    滚动轴承

    公开(公告)号：US5672014A

    公开(公告)日：1997-09-30

    申请号：US536773

    申请日：1995-09-29

    申请人： Shigeru Okita ,  Nobuaki Mitamura ,  Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

    发明人： Shigeru Okita ,  Nobuaki Mitamura ,  Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

    IPC分类号： C22C38/00 ,  C22C38/18 ,  C23C8/32 ,  F16C33/30 ,  F16C33/32 ,  F16C33/62 ,  F16C33/64 ,  F16C33/44

    CPC分类号： C23C8/32 ,  F16C33/62 ,  F16C33/64 ,  F16C33/303 ,  F16C33/32 ,  Y10S384/912 ,  Y10S384/913 ,  Y10T428/31678

    摘要： A rolling bearing has components of an inner race, an outer race and rolling elements, one of the components being formed of an alloy steel containing 0.1-1.0 wt % of C, 0.1-1.5 wt % of Si, 0.1-1.5 wt % of Mn and 0.1-3.0 wt % of Cr, the alloy steel being carbonitrided and then ground to form a surface layer having a carbon and a nitrogen concentration of 0.6-1.5 wt % and 0.05-0.9 wt %, respectively. The surface layer has an appropriate amount of retained austenite .gamma..sub.R and is sufficiently hard to insure long life even under lubrication in the presence of foreign matter. By optimizing the choice of constituent materials, processing methods and heat treatments for each of the rolling elements and the inner and outer races, rolling bearings that have high performance can be produced at low cost.

    摘要翻译： 滚动轴承具有内圈，外圈和滚动元件的部件，其中一个部件由含有0.1-1.0重量％的C，0.1-1.5重量％的Si，0.1-1.5重量％的Si， Mn和0.1-3.0重量％的Cr，合金钢被碳氮共混，然后研磨以形成碳和氮浓度分别为0.6-1.5重量％和0.05-0.9重量％的表面层。 表面层具有合适量的残留奥氏体γR，并且即使在异物存在下的润滑下也足够坚固以确保长寿命。 通过优化各滚动元件和内外圈的构成材料，加工方法和热处理的选择，可以低成本地制造具有高性能的滚动轴承。