公开(公告)号：US5520987A

公开(公告)日：1996-05-28

申请号：US268522

申请日：1994-07-06

申请人： Hiroshi Narai ,  Satoshi Kadokawa ,  Hiroshi Iwasa ,  Yasuo Murakami

发明人： Hiroshi Narai ,  Satoshi Kadokawa ,  Hiroshi Iwasa ,  Yasuo Murakami

IPC分类号： F16H53/00 ,  C21D7/06 ,  F16C17/00 ,  F16C29/02 ,  F16C33/30 ,  F16C33/62 ,  F16H53/02

CPC分类号： F16C17/00 ,  C21D7/06 ,  F16C29/02 ,  F16C33/30 ,  F16C33/62 ,  F02B2275/18 ,  Y10S148/906 ,  Y10S384/912 ,  Y10S384/913 ,  Y10T29/479 ,  Y10T29/49707 ,  Y10T428/12472 ,  Y10T428/24355 ,  Y10T428/31 ,  Y10T74/2107

摘要： A rolling/sliding member for use in conditions of rolling and/or sliding contact with a mating member opposed to the rolling/sliding member under the following conditions;(a) the rolling/sliding member are formed with a large number of fine protrusions and depressions in at least the surface area which comes into contact with the mating member,(b) the total volume per unit area of the fine depressions is in the range of 5.times.10.sup.-8 to 5.times.10.sup.-7 cc/mm.sup.2, and(c) the average volume of the fine depression is 10 to 100 .mu.m.sup.3.

摘要翻译： 一种滚动/滑动构件，用于在以下条件下与与滚动/滑动构件相对的配合构件滚动和/或滑动接触的条件; （a）滚动/滑动构件在至少与配合构件接触的表面区域中形成有大量细小的突起和凹陷，（b）细凹陷的单位面积的总体积在 范围为5×10 -8〜5×10 -7 cc / mm 2，（c）细凹陷的平均体积为10〜100m 3。

公开(公告)号：US5298323A

公开(公告)日：1994-03-29

申请号：US594369

申请日：1990-10-09

申请人： Hiroshi Narai ,  Tsutomu Abe ,  Shigeru Okita

发明人： Hiroshi Narai ,  Tsutomu Abe ,  Shigeru Okita

IPC分类号： C22C32/00 ,  F16C33/30 ,  F16C33/62 ,  B32B18/00

CPC分类号： C22C32/0026 ,  F16C33/30 ,  F16C33/62 ,  Y10S148/906 ,  Y10T428/12486 ,  Y10T428/12611 ,  Y10T428/252 ,  Y10T428/257 ,  Y10T428/2993 ,  Y10T428/31678

摘要： A long-life bearing steel and a long-life rolling bearing made of the steel are disclosed. In the steel, the number of oxide or oxide-based inclusion particles in a given unit area A of 160 mm.sup.3 with an average particle size of 3 to 30 .mu.m is 80 or less and an abundance of oxide or oxide-base inclusion particles with 10 .mu.m or more average particle size to oxide or oxide-based inclusion particles having an average particle size of 3 to 30 .mu.m is below 2%. An electron beam melting extraction evaluation method irradiating electron beam under the following condition guarantees the cleanness of the steel: 350 V+100.ltoreq.J.ltoreq.700 V+200, wherein J represents electric charge power in W provided by electron beam and V represents a sample volume in cm.sup.3.

摘要翻译： 公开了一种长寿命轴承钢和由钢制成的长寿命滚动轴承。 在钢中，平均粒径为3〜30（my）m的给定单位面积A为160mm 3的氧化物或氧化物系夹杂物的数量为80以下，氧化物或氧化物系夹杂物的含量多 平均粒径为3〜30（my）m的氧化物或氧化物系夹杂物的平​​均粒径为10（μm）以上的粒子的含量低于2％。 在以下条件下照射电子束的电子束熔融提取评估方法保证了钢的清洁度：350V + 100 <= J <= 700V + 200，其中J表示由电子束提供的电荷功率，V表示 样品体积（cm3）。

公开(公告)号：US20060048576A1

公开(公告)日：2006-03-09

申请号：US10498876

申请日：2003-01-17

申请人： Akihiro Kiuchi ,  Yutaka Ishii ,  Youichi Matsumoto ,  Masaru Kawabe ,  Hiroshi Narai ,  Naoko Yokoyama

发明人： Akihiro Kiuchi ,  Yutaka Ishii ,  Youichi Matsumoto ,  Masaru Kawabe ,  Hiroshi Narai ,  Naoko Yokoyama

IPC分类号： G01M13/04 ,  F16C19/00

CPC分类号： G01N29/11 ,  F16C33/12 ,  F16C33/30 ,  F16C2204/60 ,  G01N29/2456 ,  G01N29/265 ,  G01N29/28 ,  G01N2291/014 ,  G01N2291/0234 ,  G01N2291/02836 ,  G01N2291/0421 ,  G01N2291/0422 ,  G01N2291/101 ,  G01N2291/2696

摘要： A first object is to provide a method for evaluating large-sized inclusions in a bearing steel. The method enables quantitative evaluation of large-sized inclusions even if the steel has a high degree of cleanliness. Further, a second object is to provide an appropriate bearing steel evaluated by the method for evaluating large-sized inclusions. Further, a third object is to provide a rolling bearing capable of eliminating short life products and cracked products and providing longer lifetime for entire bearings. In order to achieve the first object, a round bar formed of a bearing steel to be evaluated and an ultrasonic probe are placed in an ultrasonic transmission medium, and the size and number of large-sized inclusions that are present in the flaw detection volume are measured to estimate the existence probability of large-sized inclusions in the bearing steel to be evaluated. The second object is achieved by specifying large-sized inclusions that are present in the bearing steel in accordance with the method for evaluating large-sized inclusions. Further, to achieve the third object, a rolling bearing is manufactured from a seamless steel tube, as material, having a diameter of 180 mm or less and a wall thickness of 25 mm or less, and ensured that it does not include a defect having a length of 1 mm of more at its material stage.

摘要翻译： 第一个目的是提供一种用于评估轴承钢中的大尺寸夹杂物的方法。 该方法能够对大尺寸夹杂物进行定量评价，即使钢具有高度的清洁度。 此外，第二个目的是提供通过用于评估大尺寸夹杂物的方法评估的合适的轴承钢。 此外，第三个目的是提供一种能够消除短寿命产品和破裂产品并为整个轴承提供更长寿命的滚动轴承。 为了实现第一个目的，将由待评估的轴承钢形成的圆棒和超声波探头放置在超声波传播介质中，并且存在于探伤体积中的大尺寸夹杂物的尺寸和数量是 测量以评估待评估的轴承钢中大尺寸夹杂物的存在概率。 第二个目的是通过根据用于评估大尺寸夹杂物的方法来指定存在于轴承钢中的大尺寸夹杂物来实现的。 此外，为了实现第三个目的，一种滚动轴承由直径为180mm以下且壁厚为25mm以下的无缝钢管作为材料制造，并且确保不包括具有 在其材料阶段的长度为1毫米。

公开(公告)号：US07207223B2

公开(公告)日：2007-04-24

申请号：US10803920

申请日：2004-03-19

申请人： Hiroshi Narai ,  Kikuaki Kamamura

发明人： Hiroshi Narai ,  Kikuaki Kamamura

IPC分类号： G01N29/07

CPC分类号： F16H15/38 ,  G01N29/22 ,  G01N2291/0258 ,  G01N2291/0289 ,  G01N2291/044 ,  G01N2291/2697

摘要： A toroidal-type continuously variable transmission component, such as an input disk, an output disk, an inner ring of a power roller bearing, and an outer ring of the power roller bearing, which is functioned as a rolling member, has a layer a depth of which is 0.5 mm or less from the surface thereof. The layer does not include a non-metallic inclusion having a maximum diameter of up to 0.1 mm in the area thereof having a depth of 0.5 mm or less from the surface thereof.

摘要翻译： 用作滚动部件的动力滚子轴承的输入盘，输出盘，动力滚子轴承的内圈，动力滚子轴承的外圈等环形无级变速器部件具有层 其深度为0.5mm以下。 该层在其表面上的深度为0.5mm以下的面积中不包括最大直径为0.1mm以下的非金属夹杂物。

公开(公告)号：US5611250A

公开(公告)日：1997-03-18

申请号：US493215

申请日：1995-06-20

申请人： Hiroshi Narai ,  Satoshi Kadokawa ,  Yasuyuki Shimazaki ,  Hiroshi Iwasa

发明人： Hiroshi Narai ,  Satoshi Kadokawa ,  Yasuyuki Shimazaki ,  Hiroshi Iwasa

IPC分类号： C21D7/04 ,  C21D7/06 ,  C21D9/40 ,  F01L1/18 ,  F01L3/04 ,  F02B75/02 ,  F16H53/06

CPC分类号： F01L3/04 ,  C21D7/04 ,  F01L1/181 ,  C21D2211/001 ,  C21D7/06 ,  C21D9/40 ,  F01L2105/02 ,  F02B2075/027 ,  F02B2275/18 ,  Y10S384/912 ,  Y10T74/20882 ,  Y10T74/2107

摘要： The rolling/sliding outer ring of the cam follower apparatus is made to withstand peeling very well, even in severe lubrication conditions, by forming a surface layer in the depth 0 to 50 .mu.m from the outer peripheral surface of the outer ring, such that the maximum residual compressive stress in this surface layer is between 50 and 110 kgf/mm.sup.2, the hardness of this surface layer is between Hv 830 and Hv 960, and the amount of residual austenite in the surface layer is at least 7 volume %, and formed with continuous minute irregularities on the surface with convexities of the irregularities having an equivalent roundness diameter up to 15 .mu.m for the case that the concavities of the irregularities are assumed to occupy 80% of the total surface area, while the inner peripheral surface of the outer ring is superfinished.

摘要翻译： 凸轮从动装置的滚动/滑动外圈即使在严格的润滑条件下也能够通过从外圈的外周面形成0〜50μm的深度的表层，从而能够很好地抵抗剥离，使得 该表面层的最大残余压应力为50〜110kgf / mm2，该表面层的硬度为Hv 830〜Hv 960，表面层的残余奥氏体量为7体积％以上， 在表面具有连续的微小凹凸，在凹凸的凹凸假定占总表面积的80％的情况下，具有等于15μm的等效圆度直径的凹凸，而内周面 外圈超级完美。

公开(公告)号：US5415705A

公开(公告)日：1995-05-16

申请号：US86858

申请日：1993-07-07

申请人： Kyozaburo Furumura ,  Hiroshi Narai ,  Shuji Wada

发明人： Kyozaburo Furumura ,  Hiroshi Narai ,  Shuji Wada

IPC分类号： C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/18 ,  C22C38/22 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62

CPC分类号： C22C38/18 ,  F16C33/30 ,  Y10S148/906 ,  Y10S384/912

摘要： An object of this invention is to provide a rolling bearing which is long enough in serve life even when it is applied with a lubricant mixed with foreign matters, simply by quenching or by carbonitriding it for a short period of time, and which can be formed at a relatively low manufacturing cost. A rolling bearing is formed as follows: The quantities of elements such as C, Si, Mn, Cr and Mo forming a bearing alloy steel, and the quantity of retained austenite are adjusted to be in predetermined ranges, and the steel is quenched and tempered or carbonitrided so that its hardness is in the following range:-2.2.times.(.gamma..sub.R vol %)+810.ltoreq.Hv.ltoreq.-2.2.times.(.gamma..sub.R vol %)+930

摘要翻译： 本发明的目的是提供一种滚动轴承，其即使在与异物混合的润滑剂中施加足够长的使用寿命，也可以简单地通过淬火或在较短的时间内进行碳氮共渗，并且可以形成 制造成本相对较低。 滚动轴承如下形成：将形成轴承合金钢的C，Si，Mn，Cr和Mo等元素的量和残余奥氏体的量调节到预定范围内，并将钢淬火回火 或碳氮共渗，使得其硬度在以下范围内：-2.2×（γR vol％）+ 810

公开(公告)号：US5256213A

公开(公告)日：1993-10-26

申请号：US913699

申请日：1992-07-16

申请人： Hiroshi Narai ,  Tsutomu Abe ,  Kazuhiro Uemura

发明人： Hiroshi Narai ,  Tsutomu Abe ,  Kazuhiro Uemura

IPC分类号： C22C38/00 ,  G01N33/20

CPC分类号： G01N33/20 ,  Y10S148/906

摘要： In order to produce bearing steels of long life and high reliability with a higher probability by utilizing parameters for cleanness evaluation that are related to the shortest life of bearings, in the present invention, the logarithmic decrease in the cumulative size distribution of oxide-type nonmetallic inclusions and the estimated maximum diameter of inclusion particles present per unit volume or unit area are determined from the particle size distribution of the oxide-type nonmetallic inclusions, and the cleanness of interest is specified on the basis of said logarithmic decrease or said estimated maximum inclusion diameter.

摘要翻译： 为了通过利用与轴承的最短寿命相关的清洁度评估参数，以更高的可能性生产寿命长，可靠性高的轴承钢，在本发明中，氧化物型非金属的累积尺寸分布的对数减小 根据氧化物型非金属夹杂物的粒度分布确定夹杂物和每单位体积或单位面积存在的夹杂物的估计最大直径，并且基于所述对数减少或所述估计的最大夹杂物来规定感兴趣的清洁度 直径。

公开(公告)号：US5630668A

公开(公告)日：1997-05-20

申请号：US517097

申请日：1995-08-21

申请人： Katsuhiro Ikezawa ,  Hiroshi Iwasa ,  Yasuhiro Nomura ,  Toshiro Kawamura ,  Hiroshi Narai ,  Takashi Nagato ,  Dai Kinno ,  Tsutomu Abe ,  Magozo Hamamoto ,  Fumio Ueki ,  Toshimi Takajo

发明人： Katsuhiro Ikezawa ,  Hiroshi Iwasa ,  Yasuhiro Nomura ,  Toshiro Kawamura ,  Hiroshi Narai ,  Takashi Nagato ,  Dai Kinno ,  Tsutomu Abe ,  Magozo Hamamoto ,  Fumio Ueki ,  Toshimi Takajo

IPC分类号： F16C19/22 ,  F16C19/30 ,  F16C33/46 ,  F16C33/54 ,  F16C33/56 ,  F16C33/62

CPC分类号： F16C33/6696 ,  C23C22/18 ,  C23C22/83 ,  F16C19/30 ,  F16C33/543 ,  F16C33/565 ,  Y10S384/913

摘要： A rolling bearing includes an outer raceway, an inner raceway, a plurality of rolling elements interposed between the outer raceway and the inner raceway, and a cage for holding the rolling elements away from each other at the same interval in a rolling direction of the rolling elements, the cage including a first layer subjected to a surface treatment of at least one of carbonitriding, phosphating, sulfonitriding and gas soft nitfriding, and a second layer formed of at least one of PTFE, MoS.sub.2, WS.sub.2, Ag and Sn when the first layer includes a treated surface subjected to the surface treatment of phosphating. The rolling bearing can stabilize the attitude of the rolling elements and retain the ease of grinding them. At the same time, the dynamic torque of the rolling elements can be minimized while insuring to prevent the rolling elements from falling away from the cage.

摘要翻译： 滚动轴承包括外滚道，内滚道，插入在所述外滚道和所述内滚道之间的多个滚动元件，以及保持架，所述滚动元件在所述滚动的滚动方向上以相同的间隔彼此远离地保持 元素，所述保持架包括经过碳氮共渗，磷化，磺化和气体软氮化作用中的至少一种的表面处理的第一层，以及当所述第一层由PTFE，MoS 2，WS 2，Ag和Sn中的至少一种形成时， 层包括经过磷化处理的处理表面。 滚动轴承可以稳定滚动元件的姿态并保持其磨削的容易性。 同时，可以确保滚动元件的动态转矩最小化，同时确保防止滚动元件从保持架脱落。