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）

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。

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。

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。

公开(公告)号：US06422756B1

公开(公告)日：2002-07-23

申请号：US09703591

申请日：2000-11-02

申请人： Susumu Tanaka ,  Manabu Ohori

发明人： Susumu Tanaka ,  Manabu Ohori

IPC分类号： F16C3332

CPC分类号： F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C2240/54 ,  Y10S148/906

摘要： In a balling bearing 1 of small diameter equipped with an outer race 2 and an inner race 3, and a plurality of rolling elements 4 disposed between the outer race 2 and the inner race 3, at least rolling element 4 is composed of a steel of Cr concentration being 8 wt % or higher, and the surface thereof is formed with a layer of N concentration being a range of 3≦N %≦0.26×Cr %+4.42.

摘要翻译： 在具有外圈2和内圈3的小直径的滚珠轴承1和设置在外圈2和内圈3之间的多个滚动元件4中，至少滚动元件4由 Cr浓度为8重量％以上，其表面形成为N浓度为3 <= N％<= 0.26×Cr％+ 4.42的范围的层。

公开(公告)号：US06248186B1

公开(公告)日：2001-06-19

申请号：US09341161

申请日：1999-07-02

申请人： Kenji Yamamura ,  Susumu Tanaka ,  Manabu Ohori

发明人： Kenji Yamamura ,  Susumu Tanaka ,  Manabu Ohori

IPC分类号： C21D106

CPC分类号： C22C38/30 ,  C21D1/06 ,  C21D9/36 ,  C21D9/40 ,  C22C38/22 ,  C22C38/46 ,  F16C33/30 ,  F16C33/62 ,  F16C33/64 ,  Y10S148/906 ,  Y10S384/912

摘要： A ball-and-roller bearing is disclosed having an inner ring, an outer ring arranged on the axis of the inner ring and rotating around the co-axis relative to the inner ring, and a rolling body interposed between the inner ring and the outer ring and rolling with rotation of the outer ring relative to the inner ring. One of the inner ring, the outer ring, and the rolling body has a core member made from an alloy containing iron, at least one of 0.2 to 1.0% by weight of silicon and 0.2 to 1.5% by weight of manganese, 7.0 to 11.0% by weight of chromium, 1.5 to 6.0% by weight of molybdenum, and 0.5 to 8.0% by weight of cobalt, and a case hardened surface layer. Also disclosed is the method of manufacturing the bearing by forming a core member of the alloy, forming a case hardened layer containing 0.9 to 1.5% by weight of carbon in a surface region of the core member by applying to the core member a carbonizing or carbonitriding treatment, a hardening treatment, and a tempering treatment under high temperatures, and assembling the inner ring, the outer ring and the rolling body such that the inner ring and the outer ring are positioned on the same axis and the rolling body is between the inner ring and the outer ring.

摘要翻译： 公开了一种滚珠轴承，其具有内圈，设置在内圈的轴线上并相对于内圈围绕同轴线旋转的外圈，以及设置在内圈和外圈之间的滚动体 环和滚动，外圈相对于内圈旋转。 内环，外圈和滚动体中的一个具有由含铁的合金制成的芯构件，0.2〜1.0重量％的硅和0.2〜1.5重量％的锰中的至少一个，7.0〜11.0 铬的重量％，钼的1.5〜6.0重量％，钴的0.5〜8.0重量％，表面硬化表面层。 还公开了通过形成合金的芯构件来制造轴承的方法，在芯构件的表面区域中形成包含0.9至1.5重量％的碳的壳硬化层，通过向芯构件施加碳化或碳氮共渗 处理，硬化处理和高温回火处理，并且内圈，外圈和滚动体的组装使得内圈和外圈位于同一轴线上，并且滚动体位于内圈 环和外圈。

公开(公告)号：US6143425A

公开(公告)日：2000-11-07

申请号：US220683

申请日：1998-12-23

申请人： Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

发明人： Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

IPC分类号： C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/18 ,  C22C38/22 ,  C22C38/42 ,  C22C38/44 ,  F16C33/30 ,  F16C33/62 ,  B32B15/04 ,  C03C27/02 ,  F16C19/04 ,  F16C33/32

CPC分类号： C22C38/18 ,  C22C38/001 ,  C22C38/22 ,  C22C38/42 ,  C22C38/44 ,  F16C33/30 ,  F16C33/62 ,  C21D9/36 ,  C21D9/40 ,  F16C2204/70 ,  Y10T428/12576 ,  Y10T428/12611 ,  Y10T428/12979

摘要： A rolling device includes: an outer member; an inner member; and a plurality of rolling elements arranged between the outer and inner members, the outer member having a first contact surface which contacts the rolling elements, the inner member having a second contact surface which contacts the rolling elements, each of the rolling elements rolling against the first and second contact surfaces. At least one of the outer member, inner member, and rolling elements is formed of steel containing: C of less than 0.6 wt %; Cr of 10.0 wt % to 22.0 wt %; Mn of 0.1 wt % to 1.5 wt %; Si of 0.1 wt % to 2.0 wt %; N from 0.05 wt % to less than 0.2 wt %; Mo of 0 to 3.0 wt %, and V of 0 to 2.0 wt %; and the balance Fe and inevitable impurities, the steel satisfying C %+N %.gtoreq.0.45 wt %. The rolling device has excellent characteristics in fatigue strength, wear resistance, corrosion resistance, and acoustic characteristic.

摘要翻译： 滚动装置包括：外部构件; 内部成员; 以及多个滚动体，其设置在所述外部构件和所述内部构件之间，所述外部构件具有与所述滚动体接触的第一接触面，所述内部构件具有与所述滚动体接触的第二接触面， 第一和第二接触表面。 外部构件，内部构件和滚动体中的至少一个由钢形成，其含有小于0.6重量％的C; 10.0重量％〜22.0重量％的Cr; Mn为0.1重量％〜1.5重量％; Si为0.1重量％〜2.0重量％ N为0.05重量％以上，小于0.2重量％ 0〜3.0重量％的Mo，0〜2.0重量％的V。 余量为Fe和不可避免的杂质，钢满足C％+ N％> = 0.45重量％。 轧制装置具有优异的疲劳强度，耐磨性，耐腐蚀性和声学特性。

公开(公告)号：US5998042A

公开(公告)日：1999-12-07

申请号：US733451

申请日：1996-10-18

申请人： Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

发明人： Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

IPC分类号： C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/18 ,  C22C38/22 ,  C22C38/42 ,  C22C38/44 ,  F16C33/30 ,  F16C33/62 ,  B32B15/04

CPC分类号： C22C38/18 ,  C22C38/001 ,  C22C38/22 ,  C22C38/42 ,  C22C38/44 ,  F16C33/30 ,  F16C33/62 ,  C21D9/36 ,  C21D9/40 ,  F16C2204/70 ,  Y10T428/12576 ,  Y10T428/12611 ,  Y10T428/12979

摘要： A rolling device includes: an outer member; an inner member; and a plurality of rolling elements arranged between the outer and inner members, the outer member having a first contact surface which contacts the rolling elements, the inner member having a second contact surface which contacts the rolling elements, each of the rolling elements rolling against the first and second contact surfaces. At least one of the outer member, inner member, and rolling elements is formed of steel containing: C of less than 0.6 wt %; Cr of 10.0 wt % to 22.0 wt %; Mn of 0.1 wt % to 1.5 wt %; Si of 0.1 wt % to 2.0 wt %; N from 0.05 wt % to less than 0.2 wt %; Mo of 0 to 3.0 wt %, and V of 0 to 2.0 wt %; and the balance Fe and inevitable impurities, the steel satisfying C %+N %.gtoreq.0.45 wt % and containing retained austenite of .ltoreq.6 vol %. The rolling device has excellent characteristics in fatigue strength, wear resistance, corrosion resistance, and acoustic characteristic.

摘要翻译： 滚动装置包括：外部构件; 内部成员; 以及多个滚动体，其设置在所述外部构件和所述内部构件之间，所述外部构件具有与所述滚动体接触的第一接触面，所述内部构件具有与所述滚动体接触的第二接触面， 第一和第二接触表面。 外部构件，内部构件和滚动体中的至少一个由钢形成，其含有小于0.6重量％的C; 10.0重量％〜22.0重量％的Cr; Mn为0.1重量％〜1.5重量％; Si为0.1重量％〜2.0重量％ N为0.05重量％以上，小于0.2重量％ 0〜3.0重量％的Mo，0〜2.0重量％的V。 余量为Fe和不可避免的杂质，钢满足C％+ N％> = 0.45重量％，含有<6vol％的残余奥氏体。 轧制装置具有优异的疲劳强度，耐磨性，耐腐蚀性和声学特性。

公开(公告)号：US06315455B1

公开(公告)日：2001-11-13

申请号：US09541595

申请日：2000-04-03

申请人： Susumu Tanaka ,  Manabu Ohori

发明人： Susumu Tanaka ,  Manabu Ohori

IPC分类号： F16C3332

CPC分类号： F16C33/32 ,  C21D9/36 ,  C21D9/40 ,  F16C2206/58 ,  F16C2240/54 ,  F16C2240/60 ,  Y10S148/906

摘要： The rolling bearing according to the invention comprises a dense nitride layer formed on the surface layer of the rolling elements and optionally an optimum carbonitride layer formed on the races. In this arrangement, the deterioration of durability due to vibration or impact load during transportation can be prevented, not to mention improvement of stillness. Further, the deterioration of impact resistance required for hybrid bearing can be prevented. The release of pilot pressure and defective of acoustic properties due to electrostatic attraction of dust can be prevented. At the same time, the rolling element of the invention comprises a compound layer having an extremely high hardness formed uniformly, making it possible to finish to a high precision. Moreover, a great effect can be exerted of preventing the change of properties with time at high temperature or the deterioration of acoustic properties under other severe working conditions. A novel rolling bearing is provided comprising an outer race, an inner race and a plurality of rolling elements or comprising an outer race, a shaft and a plurality of rolling elements, characterized in that the rolling elements have a dense nitride layer on the finished surface thereof and the nitride layer comprises a compound layer having a hardness Hv of 900 or more and a diffusion-hardened layer.

摘要翻译： 根据本发明的滚动轴承包括在滚动元件的表面层上形成的致密氮化物层，并且任选地在该种族上形成最佳的碳氮化物层。 在这种布置中，可以防止由于运输过程中的振动或冲击载荷引起的耐久性的劣化，更不用说改善静止度。 此外，可以防止混合轴承所需的耐冲击性的劣化。 可以防止由于灰尘的静电吸引引起的先导压力和声学特性的缺陷。 同时，本发明的滚动元件包括均匀地形成的具有极高硬度的复合层，从而可以高精度地完成。 此外，可以发挥防止高温时的性能变化或其他恶劣工作条件下的声学特性劣化的巨大效果。 提供一种新颖的滚动轴承，其包括外圈，内圈和多个滚动元件，或包括外圈，轴和多个滚动元件，其特征在于，滚动元件在精加工表面上具有致密的氮化物层 并且氮化物层包括硬度Hv为900以上的化合物层和扩散硬化层。

公开(公告)号：US06171411B2

公开(公告)日：2001-01-09

申请号：US08901779

申请日：1997-07-28

申请人： Shigeru Okita ,  Susumu Tanaka

发明人： Shigeru Okita ,  Susumu Tanaka

IPC分类号： C23C822

CPC分类号： F16C33/62 ,  C22C38/18 ,  Y10S148/906 ,  Y10S384/912

摘要： Disclosed is a rolling bearing comprising an inner race, an outer race, and a plurality of rolling elements, at least one of the inner race and the outer race being formed of an alloy steel which comprises: 0.7≦C≦0.9% by weight; 0.1≦Si≦0.5% by weight; 0.5≦Mn≦1.1% by weight; and 0.1≦Cr≦0.6% by weight; and including, in its surface layer, at least one of 0.8≦C≦1.4% by weight and 0.01≦N≦0.3% by weight. The rolling bearing can be obtained at an extremely low cost and has a long life in a severe environment particularly under contaminated lubrication.

摘要翻译： 公开了一种包括内圈，外圈和多个滚动元件的滚动轴承，所述内圈和所述外座圈中的至少一个由合金钢制成，所述合金钢包括：并且包括在其表面层中 0.8 <= C <= 1.4重量％中的至少一个和0.01 <= N <= 0.3重量％。 滚动轴承可以以非常低的成本获得，并且在恶劣环境下使用寿命长，特别是在污染润滑下。