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公开(公告)号：JP2005133923A
公开(公告)日：2005-05-26
申请号：JP2004012211
申请日：2004-01-20
Inventor： OKI TSUTOMU , MAEDA KIKUO
CPC classification number: Y02P10/212
Abstract: PROBLEM TO BE SOLVED: To provide a steel machine part that has high breaking resistance and dimensional stability and is excellent in rolling fatigue life. SOLUTION: In the rolling bearing 10 having an outer ring 1, an inner ring 2 and a plurality of rolling elements 3, at least one member of the outer ring 1, the inner ring 2 and the rolling elements 3 lies in the range where the grain size number of austenite crystal grain exceeds 10 and in the range where compressive residual stress is 100-300 MPa. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种具有高抗破坏性和尺寸稳定性并且具有优异的滚动疲劳寿命的钢机部件。 解决方案：在具有外圈1，内圈2和多个滚动元件3的滚动轴承10中，外圈1，内圈2和滚动元件3中的至少一个构件位于 奥氏体晶粒的晶粒数超过10的范围和压缩残余应力为100〜300MPa的范围。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005133213A
公开(公告)日：2005-05-26
申请号：JP2004296165
申请日：2004-10-08
Inventor： NAKAJIMA HIROKAZU , MAEDA KIKUO
CPC classification number: Y02P10/253
Abstract: PROBLEM TO BE SOLVED: To improve the efficiency of heat treatment in the whole system when a nitrogen-enriched layer is formed in primary heat treatment and a re-quenching is applied in secondary heat treatment. SOLUTION: A bearing part is cooled with a cooler 12 to the temperature below an A 1 transformation point after heating to the temperature exceeding the A 1 transformation point with a heater 11 in a primary heat treatment apparatus 1, to form the nitrogen-enriched layer on the surface thereof. The bearing part after applying the primary heat treatment, the bearing part is heated by high-frequency heating to the temperature exceeding the A 1 transformation point with a heater 21 in a secondary heat treatment apparatus 2, and thereafter is cooled to the temperature below the A 1 transformation point with a cooler 22. After cooling with the cooler 22, a tempering is applied by the high frequency heating. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：为了提高在一次热处理中形成富氮层时在整个系统中的热处理效率，并且在二次热处理中应用再淬火。 解决方案：在加热到超过A
1 转变点的温度后，将轴承部分用冷却器12冷却至低于A 1 相变点的温度， 一次热处理装置1中的加热器11，以在其表面上形成富氮层。 在进行一次热处理后的轴承部分，通过二次热处理装置2中的加热器21将轴承部分通过高频加热加热到超过A 1 相变点的温度，之后 用冷却器22冷却至低于A 1 相变点的温度。用冷却器22冷却后，通过高频加热进行回火。 版权所有（C）2005，JPO＆NCIPI -
公开(公告)号：JP2005114149A
公开(公告)日：2005-04-28
申请号：JP2003352997
申请日：2003-10-10
Inventor： OKI TSUTOMU , MAEDA KIKUO
Abstract: PROBLEM TO BE SOLVED: To provide a rolling bearing having high cracking strength resistance and dimensional stability and superior rolling fatigue life.
SOLUTION: The rolling bearing 10 comprises an outer ring 1, an inner ring 2, a plurality of rolling bodies 3. At least one member of the outer ring 1, the inner ring 2 and the rolling body 3 has a hydrogen content of 0.5 ppm or less and a compression residual stress of 100-300 MPa.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供具有高抗裂性和尺寸稳定性以及优异的滚动疲劳寿命的滚动轴承。 解决方案：滚动轴承10包括外圈1，内圈2，多个滚动体3.外圈1，内圈2和滚动体3的至少一个构件具有氢含量 为0.5ppm以下，压缩残余应力为100〜300MPa。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005114145A
公开(公告)日：2005-04-28
申请号：JP2003352989
申请日：2003-10-10
Inventor： OKI TSUTOMU , MAEDA KIKUO
Abstract: PROBLEM TO BE SOLVED: To provide a rolling bearing having high cracking resistance and dimensional stability and superior rolling fatigue life.
SOLUTION: The rolling bearing 10 comprises an outer ring 1, an inner ring 2, a plurality of rolling bodies 3. At least one member of the outer ring 1, the inner ring 2 and the rolling body 3 has a nitrogen enriched layer and a hydrogen content of 0.5ppm or less.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供具有高抗裂性和尺寸稳定性以及优异的滚动疲劳寿命的滚动轴承。 解决方案：滚动轴承10包括外圈1，内圈2，多个滚动体3.外圈1，内圈2和滚动体3的至少一个构件具有富氮 层，氢含量为0.5ppm以下。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005114144A
公开(公告)日：2005-04-28
申请号：JP2003352988
申请日：2003-10-10
Inventor： OKI TSUTOMU , MAEDA KIKUO
Abstract: PROBLEM TO BE SOLVED: To provide a rolling bearing having high cracking resistance and dimensional stability and superior rolling fatigue life.
SOLUTION: The rolling bearing 10 comprises an outer ring 1, an inner ring 2 and a plurality of rolling bodies 3. At least one member of the outer ring 1, the inner ring 2 and the rolling body 3 has a nitrogen enriched layer and austenite crystal grains in a range exceeding No.10 in the grain size number.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供具有高抗裂性和尺寸稳定性以及优异的滚动疲劳寿命的滚动轴承。 解决方案：滚动轴承10包括外圈1，内圈2和多个滚动体3.外圈1，内圈2和滚动体3中的至少一个构件具有富氮 层状和奥氏体晶粒的晶粒数在超过10的范围内。 版权所有（C）2005，JPO＆NCIPI
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Patent Agency Ranking
公开(公告)号：JP2005113256A
公开(公告)日：2005-04-28
申请号：JP2003352998
申请日：2003-10-10
Inventor： OKI TSUTOMU , MAEDA KIKUO
CPC classification number: C22C38/40 , C21D9/40 , C21D2201/00 , C22C38/02 , C22C38/04
Abstract: PROBLEM TO BE SOLVED: To provide rolling bearings having the superior rolling-fatigue life even under an environment contaminated with foreign materials at a high temperature.
SOLUTION: Rolling bearing parts are made of a steel material comprising alloying elements of, by mass%, 0.6% to 1.3% C, 0.3% to 3.0% Si, 0.2% to 1.5% Mn, 0.03% or less P, 0.03% or less S, 0.3% to 5.0% Cr, 0.1% to 3.0% Ni, 0.050% or less Al, 0.003% or less Ti, 0.0015% or less O, and 0.015% or less N, and the balance Fe with unavoidable impurities; have a nitrogen-enriched layer thereon; and have an austenitic grain size exceeding 10 by a size number.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：即使在高温下被异物污染的环境下，也提供具有优异的滚动疲劳寿命的滚动轴承。 ＆lt; P＆gt;解决方案：滚动轴承部件由包括质量％为0.6％至1.3％的C，0.3％至3.0％的Si，0.2％至1.5％的Mn，0.03％以下的合金元素的钢材制成， 0.03％以下的S，0.3〜5.0％的Cr，0.1〜3.0％的Ni，0.050％以下的Al，0.003％以下的Ti，0.0015％以下的O，以及0.015％以下的N，余量为Fe 不可避免的杂质; 在其上具有氮富集层; 并且奥氏体晶粒尺寸超过10。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005113219A
公开(公告)日：2005-04-28
申请号：JP2003349681
申请日：2003-10-08
Inventor： NAKAJIMA HIROKAZU , MAEDA KIKUO
Abstract: PROBLEM TO BE SOLVED: To improve the production efficiency, in a heat treatment system in which a nitrogen-rich layer is formed in primary heat treatment and quenching is applied in secondary heat treatment, at lower temperature than the heating temperature in the primary heat treatment.
SOLUTION: In a primary heat treatment apparatus 1, after heating bearing parts to the temperature exceeding A
1 transformation point with a heating machine 11, the nitrogen-rich layer is formed on the surfaces of the bearing parts by cooling them lower than the A
1 transformation point. Successively, the bearing parts are shifted into a secondary heat treatment apparatus 2, and after heating to the temperature exceeding the A
1 transformation point and the temperature at lower than a primary quenching temperature, the parts are cooled lower than the A
1 transformation point. Numbers of treatments of the bearing parts in the heating machine 11 for performing the primary heating and a heating machine 21 for performing the secondary heating, are detected with counters 11a, 21a, respectively and based on these detected data, the heating conditions are obtained so that the difference of treating quantities between both heat treatment apparatuses can be reduced. According to these heating conditions, the heating times in the heating machines 11, 21 are controlled so as to reduce the idleness of the heating machines 11, 21.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题为了提高生产效率，在二次热处理中，在一次热处理中形成富氮层的热处理系统中，在比二次热处理中的加热温度低的温度下进行二次热处理 一次热处理。 解决方案：在一次热处理装置1中，通过加热机11将轴承部件加热到超过A
1 相变点的温度后，富氮层形成在 通过将其冷却到低于A 1 转变点的方式承载部件。 接着将轴承部件移动到二次热处理装置2中，并且在加热到超过A 1 相变点的温度和低于初级淬火温度的温度之后，部件被冷却 比A 1 变换点。 用于执行一次加热的加热机11中的轴承部件的处理数和用于进行二次加热的加热机21分别用计数器11a，21a检测，并且基于这些检测数据，从而获得加热条件 可以减少两个热处理装置之间的处理量的差异。 根据这些加热条件，加热机11,21的加热时间被控制，以减少加热机11,21的闲置时间。（C）2005，JPO＆NCIPI -
公开(公告)号：JP2005113212A
公开(公告)日：2005-04-28
申请号：JP2003349674
申请日：2003-10-08
Inventor： NAKAJIMA HIROKAZU , MAEDA KIKUO
Abstract: PROBLEM TO BE SOLVED: To improve the efficiency of heat treatment in the whole system, in the heat treatment system in which a nitrogen-rich layer is formed in primary heat treatment, and quenching is applied in secondary heat treatment, at a lower temperature than the heating temperature in the primary heat treatment.
SOLUTION: In a primary heat treatment apparatus 1, after heating bearing parts at the temperature exceeding A
1 transformation point with a heating machine 11, the nitrogen-rich layer is formed on the surfaces of the bearing parts by cooling them lower than A
1 transformation point. Successively, the bearing parts are shifted to a secondary heat treatment apparatus 2, and after heating them higher than the A
1 transformation point and lower than the primary quenching temperature, the parts is cooled lower than the A
1 transformation point. The primary heat treatment apparatus 1 is disposed at the plurality of positions as the parallel-state, and the bearing parts carried out from respective primary heat treatment apparatus 1, are supplied into one of the secondary heat treatment apparatus 2.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题为了提高整个系统的热处理效率，在一次热处理中形成富氮层的热处理系统中，在二次热处理中进行淬火，在 比初级热处理中的加热温度低。 解决方案：在一次热处理装置1中，在加热机11的温度超过A
1 相变点的轴承部件加热后，在富氧层11的表面上形成富氮层 通过将其冷却到低于A 1 转变点的轴承部件。 接着将轴承部件移动到二次热处理装置2中，并且在将它们加热到高于A 1 相变点并低于初级淬火温度之后，部件被冷却到低于A < SB> 1 转换点。 一次热处理装置1设置在作为平行状态的多个位置，并且将从一次热处理装置1执行的轴承部分供给到二次热处理装置2之一。版权所有： （C）2005，JPO＆NCIPI -
公开(公告)号：JP2005113211A
公开(公告)日：2005-04-28
申请号：JP2003349668
申请日：2003-10-08
Inventor： NAKAJIMA HIROKAZU , MAEDA KIKUO
Abstract: PROBLEM TO BE SOLVED: To improve the efficiency of heat treatment in the whole heat treatment system performing two-step heat treatments.
SOLUTION: After heating bearing parts to the temperature exceeding A
1 transformation point with a primary heating machine 11-13, a nitrogen-rich layer is formed on the surface by cooling them lower than the A
1 transformation point with a primary cooling machine 14. Successively, the bearing parts are heated higher than the A
1 transformation point and lower than the heating temperature in the primary heating machine 11-13 with a secondary heating machine 15 and thereafter, cooled lower than the A
1 transformation point with a secondary cooling machine 2. Both of the primary heating machine 11-13 and the secondary heating machine, are batch-wise.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：为了提高进行两步热处理的整个热处理系统中的热处理效率。 解决方案：使用一次加热机11-13将轴承部件加热到超过A
1 转变点的温度后，通过将其冷却到低于A 1 转换点。接着，将轴承部件加热到高于A 1 相变点并低于一次加热机11中的加热温度 -13，二次加热机15，然后用二次冷却机2冷却至低于A 1 转变点。一次加热机11-13和二次加热机均为批次 -明智的。 版权所有（C）2005，JPO＆NCIPI -
公开(公告)号：JP2004340269A
公开(公告)日：2004-12-02
申请号：JP2003137703
申请日：2003-05-15
Inventor： TAMADA KENJI , MAEDA KIKUO
Abstract: PROBLEM TO BE SOLVED: To provide a thrust needle bearing capable of suppressing local wear of a roller due to contacting with a guiding surface of a holder pocket, and increasing peel resistance life of the roller or a bearing ring.
SOLUTION: On both surfaces of an inner peripheral side annular rim portion 3 of each pocket 5 in a holder 6, oil-through grooves 7 ranging from an inner diameter side end surface thereof and an inner diameter side end surface of each pocket 5 are provided. Lubricating oil is supplied from these oil-through grooves 7 to each pocket 5 by centrifugal force generated with rotations of the holder 6, thereby forming a sufficient oil film of the lubricating oil on the guiding surface of the pocket 5. The local wear of the roller due to contact with the guiding surface of the pocket 5 is suppressed, and the peel resistance life of the roller and the bearing ring is increased.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供一种能够抑制由于与保持器袋的引导表面接触而导致的辊的局部磨损并且增加辊或轴承环的剥离寿命的推力滚针轴承。 解决方案：在保持器6中的每个凹槽5的内周侧环形边缘部3的两个表面上，从其内径侧端面和每个口袋的内径侧端面到达的油通孔7 5。 通过由保持器6的转动产生的离心力将润滑油从这些通油槽7供给到各口袋5，从而在袋5的引导面上形成充分的润滑油油膜。 由于与袋5的引导面接触而产生的辊被抑制，并且辊和轴承环的剥离寿命延长。 版权所有（C）2005，JPO＆NCIPI
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