公开(公告)号：JP2009001848A

公开(公告)日：2009-01-08

申请号：JP2007162886

申请日：2007-06-20

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO ,  TAMADA KENJI

IPC: C22C38/00 ,  C21D1/06 ,  C21D9/40 ,  C22C38/46 ,  C23C8/32 ,  F16C33/32 ,  F16C33/62

CPC classification number: Y02P10/212

Abstract: PROBLEM TO BE SOLVED: To provide a rolling member and a rolling bearing for the auxiliary machinery of automotive electrical equipment, which exhibit the long life under harsh environments while reducing a content of an alloying element. SOLUTION: An outer race 11, an inner race 12 and a ball 13 of a ball bearing 1 with a deep groove having grease enclosed therein are made of a steel which comprises 0.7 to 1.1% of carbon, 0.3 to 0.7% of silicon, 0.3 to 0.8% of manganese, 0.5 to 1.2% of nickel, 1.3 to 1.8% of chromium, 0.1 to 0.7% of molybdenum, 0.2 to 0.4% of vanadium and the balance iron with impurities, while keeping a total content of silicon and manganese at 1.0% or less, a total content of nickel and chromium at 2.3% or more and a total content of chromium, molybdenum and vanadium at 3.0% or less; and have a layer containing high carbon formed on their surfaces. The surface layer part of the layer has a hardness of 725 to 800 HV. The maximum particle size of carbides dispersed in the surface layer part is 10 μm or smaller and the area ratio thereof is 7 to 20% or less. The surface layer part includes more carbon than the inner part by 0.2 to 0.4%, and includes 0.1 to 0.5 mass% of nitrogen. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于汽车电气设备辅助机械的滚动部件和滚动轴承，其在恶劣环境下使用寿命长，同时减少合金元素的含量。

解决方案：一种外圈11，内座圈12和球轴承1的球体13，其中包含润滑脂的深沟槽由钢制成，该钢包含0.7-1.1％的碳，0.3〜0.7％的碳 硅，0.3〜0.8％的锰，0.5〜1.2％的镍，1.3〜1.8％的铬，0.1〜0.7％的钼，0.2〜0.4％的钒和余量的铁与杂质，同时保持硅的总含量 和1.0％以下的锰，镍和铬的总含量为2.3％以上，铬，钼和钒的总含量为3.0％以下; 并且在其表面上形成含有高碳的层。 该层的表层部分具有725至800HV的硬度。 分散在表面层部分中的碳化物的最大粒径为10μm以下，面积比为7〜20％以下。 表层部分的碳含量比内部多0.2〜0.4％，氮含量为0.1〜0.5质量％。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008303441A

公开(公告)日：2008-12-18

申请号：JP2007153137

申请日：2007-06-08

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO

IPC: C22C38/00 ,  C21D1/06 ,  C21D9/36 ,  C21D9/40 ,  C22C38/46 ,  C23C8/22 ,  C23C8/32 ,  F16C19/44 ,  F16C33/34 ,  F16C33/62 ,  F16C33/64

Abstract: PROBLEM TO BE SOLVED: To provide a rolling member for a needle roller bearing, which has the long life even in a hostile environment, while containing a controlled amount of an alloy element, and to provide a needle roller bearing. SOLUTION: A bearing ring 11 and a needle roller 13 of a thrust needle roller bearing 1 are formed of a steel including 0.3 to 0.4% carbon, 0.3 to 0.7% silicon, 0.3 to 0.8% manganese, 0.5 to 1.2% nickel, 1.6 to 2.5% chromium, 0.1 to 0.7% molybdenum, 0.2 to 0.4% vanadium, while containing silicon+manganese controlled to 1.0% or less, nickel+chromium controlled to 2.3% or more and chromium+molybdenum+vanadium controlled to 3.0% or less, and the balance iron with impurities; wherein a hardened layer is formed thereon. The surface layer of the hardened layer has a hardness of 725 to 800 HV, and contains carbides which have the maximum particle size of 10 μm or smaller and occupy 7 to 25% or less by an area rate. The inner part of the hardened layer has a hardness of 450 to 650 HV. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种即使在恶劣环境中也具有长寿命的滚针轴承的滚动部件，同时容纳受控量的合金元件，并且提供滚针轴承。 解决方案：推力滚针轴承1的轴承环11和滚针13由含有0.3〜0.4％的碳，0.3〜0.7％的硅，0.3〜0.8％的锰，0.5〜1.2％的镍， ，1.6〜2.5％的铬，0.1〜0.7％的钼，0.2〜0.4％的钒，同时含有硅+锰控制在1.0％以下，镍+铬控制在2.3％以上，铬+钼+钒控制在3.0％ 或以下，余量为铁与杂质; 其中在其上形成硬化层。 硬化层的表面层的硬度为725〜800HV，并且含有最大粒径为10μm以下且占面积率为7〜25％以下的碳化物。 硬化层的内部硬度为450〜650HV。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008303440A

公开(公告)日：2008-12-18

申请号：JP2007153136

申请日：2007-06-08

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO

IPC: C22C38/00 ,  C21D1/06 ,  C21D9/40 ,  C22C38/46 ,  C23C8/32 ,  F16C19/16 ,  F16C19/26 ,  F16C33/62 ,  F16C33/64

Abstract: PROBLEM TO BE SOLVED: To provide a rolling member for a machine tool, which has the long life even in a hostile environment, while containing a controlled amount of an alloy element, and to provide a rolling bearing for a machine tool. SOLUTION: An outer ring 11, an inner ring 12 and a ball 13 of an angular ball bearing 1 which supports a main shaft of the machine tool are formed of a steel including 0.3 to 0.4% carbon, 0.3 to 0.7% silicon, 0.3 to 0.8% manganese, 0.5 to 1.2% nickel, 1.6 to 2.5% chromium, 0.1 to 0.7% molybdenum, 0.2 to 0.4% vanadium, while containing silicon+manganese controlled to an amount of 1.0% or less, nickel+chromium controlled to an amount of 2.3% or more, and chromium+molybdenum+vanadium controlled to an amount of 3.0% or less, and the balance iron with impurities; wherein a hardened layer is formed thereon. The surface layer of the hardened layer has a hardness of 725 to 800 HV, and contains carbides which have the maximum particle size of 10 μm or smaller and occupy 7 to 25% or less by an area rate. The inner part of the hardened layer has a hardness of 450 to 650 HV. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种即使在恶劣环境中也具有长寿命的机床的滚动部件，同时容纳受控量的合金元件，并且提供用于机床的滚动轴承。 解决方案：支撑机床主轴的角球轴承1的外圈11，内圈12和球13由含有0.3〜0.4％碳，0.3〜0.7％硅， ，0.3〜0.8％的锰，0.5〜1.2％的镍，1.6〜2.5％的铬，0.1〜0.7％的钼，0.2〜0.4％的钒，同时含有控制在1.0％以下的硅+锰的镍+ 达到2.3％以上，铬+钼+钒控制在3.0％以下，余量为铁的杂质; 其中在其上形成硬化层。 硬化层的表面层的硬度为725〜800HV，并且含有最大粒径为10μm以下且占面积率为7〜25％以下的碳化物。 硬化层的内部硬度为450〜650HV。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008285722A

公开(公告)日：2008-11-27

申请号：JP2007131793

申请日：2007-05-17

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO ,  TAMADA KENJI

IPC: C22C38/00 ,  C21D1/06 ,  C21D9/40 ,  C22C38/46 ,  C23C8/32 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62

Abstract: PROBLEM TO BE SOLVED: To provide a rolling member which has the long life even in a hostile environment, while having a controlled content of an alloy element; a rolling bearing; and a method for manufacturing the rolling member. SOLUTION: An outer ring 11, an inner ring 12, and a ball 13 of a deep groove ball bearing 1 are formed of a steel material comprising 0.7 to 1.1% carbon, 0.3 to 0.7% silicon, 0.3 to 0.8% manganese, 0.5 to 1.2% nickel, 1.3 to 1.8% chromium, 0.1 to 0.7% molybdenum, 0.2 to 0.4% vanadium, while controlling amounts of silicon + manganese, nickel + chromium, and chromium + molybdenum + vanadium to 1.0% or less, 2.3% or more and 3.0% or less respectively, and the balance iron with impurities; and have a layer containing high carbon formed thereon. The layer containing high carbon has such a surface layer that the hardness is 725 to 800 HV, carbides have the maximum particle size of 10 μm or smaller and occupy 7 to 20% or less by an area rate, a carbon content is higher than the inner part by 0.2 to 0.4%, and a nitrogen content is 0.1 to 0.5 mass%. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供即使在恶劣环境下也具有长寿命的滚动件，同时具有受控含量的合金元素; 滚动轴承; 以及滚动体的制造方法。 解决方案：深沟球轴承1的外圈11，内圈12和球13由钢材形成，钢材含有0.7〜1.1％的碳，0.3〜0.7％的硅，0.3〜0.8％的锰 ，0.5〜1.2％的镍，1.3〜1.8％的铬，0.1〜0.7％的钼，0.2〜0.4％的钒，同时控制硅+锰，镍+铬，铬+钼+钒的含量为1.0％以下，2.3 ％以上且3.0％以下，余量为杂质铁; 并且在其上形成含有高碳的层。 含有高碳的层具有硬度为725〜800HV的表面层，碳化物的最大粒径为10μm以下，面积率为7〜20％以下，碳含量高于 内部为0.2〜0.4％，氮含量为0.1〜0.5质量％。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008019482A

公开(公告)日：2008-01-31

申请号：JP2006193000

申请日：2006-07-13

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO ,  NAKAJIMA HIROKAZU ,  MORI NOBUYUKI

IPC: C21D9/40 ,  C21D1/06 ,  C21D1/42 ,  C22C38/00 ,  C22C38/18 ,  C23C8/32 ,  F01L1/14 ,  F01L1/18 ,  F16C19/24 ,  F16C33/62 ,  F16C33/64

CPC classification number: Y02P10/253

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing an orbital member with which while restraining the raising of the manufacturing cost, the hardness in a zone including a roll-running surface is sufficiently made to high and also, the sufficient service life to rolling fatigue is secured by giving high resistance to the rolling fatigue and the hardness in the zone of plastic deformation is stably controlled. SOLUTION: The method for manufacturing the orbital member includes; a steel-made member preparing process for preparing a steel-made member restraining carbon content and chromium content; a heat-treatment process; and a finish-working process. The heat-treatment process includes; a carbo-nitriding process for heating the steel-made member and carbo-nitriding the member; a temperature-holding process for cooling the steel-made member in the temperature range of from a temperature lower than A 1 point by 100°C to a temperature lower than A 1 point for 60-180 min, and a high frequency-hardening process, in which in the steel-made member, a low hardness zone as the zone except high hardness zone including the zone to be roll-running surface in the orbital member is not hardened, but the high hardness zone is high-frequency hardened. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种制造轨道部件的方法，通过该方法在抑制制造成本的提高的同时，包括滚动表面的区域中的硬度足够高，并且足够的服务 通过赋予滚动疲劳高的抵抗力来确保滚动疲劳的寿命，并且稳定地控制塑性变形区域的硬度。

解决方案：轨道部件的制造方法包括： 用于制备抑制碳含量和铬含量的钢制构件的钢制构件制备方法; 热处理工艺; 和一个完成工作的过程。 热处理工艺包括： 用于加热钢制构件并对该构件进行碳氮化的碳氮化方法; 在从低于A 1 100℃的温度到低于A 1℃的温度的温度范围内将钢制构件冷却的温度保持工艺， 点为60-180分钟，而在高温硬化工序中，在钢制部件中，作为高硬度区域的低硬度区域，包括轨道部件中的滚动面的区域不是 硬化，但高硬度区域是高频硬化。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007182607A

公开(公告)日：2007-07-19

申请号：JP2006001381

申请日：2006-01-06

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO ,  NAKAJIMA HIROKAZU

IPC: C21D9/40 ,  C21D1/06 ,  C21D7/06 ,  C23C8/22 ,  C23C8/32 ,  F16D3/20 ,  F16D3/205 ,  F16D3/2245

Abstract: PROBLEM TO BE SOLVED: To provide a rolling member having the improved endurance life in a hostile environment for use in a constant velocity joint; to provide the constant velocity joint having the long life even in the hostile environment; and to provide a manufacturing method therefor.
SOLUTION: The method for manufacturing the rolling member for use in the constant velocity joint comprises the steps of: preparing a steel member; carburizing or carbonitriding and quenching; induction-hardening; and finishing. In the step of preparing the steel member, the steel member is made from steel and is formed into a contour shape of the rolling member for use in the constant velocity joint. In the step of carburizing or carbonitriding the steel member, the steel member is carburized or carbonitrided and then quench-hardened. In the step of induction-hardening the steel member, a region including a part to be the rolling surface of the rolling member for use in the constant velocity joint is further quench-hardened to control an amount of retained austenite in a region between the surface to be the rolling surface and a plane of 0.3 mm or less in depth therefrom to 50 vol.% to 70 vol.%. In the step of finishing the steel member, the steel member is processed to be finished.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于等速万向节的敌对环境中具有改善的耐久寿命的滚动部件; 提供即使在恶劣环境下也具有长寿命的恒速接头; 并提供其制造方法。 解决方案：用于制造用于等速万向节的滚动体的方法包括以下步骤：制备钢构件; 渗碳或碳氮共渗和淬火; 感应硬化; 和整理。 在制备钢构件的步骤中，钢构件由钢制成，并且形成为用于等速万向节的滚动构件的轮廓形状。 在对钢构件进行渗碳或碳氮共渗的步骤中，对钢构件进行渗碳或碳氮共渗，然后淬火硬化。 在钢构件的感应硬化步骤中，将包括作为用于等速万向节的滚动体的滚动面的一部分的区域进一步淬火硬化，以控制表面之间的区域中的残余奥氏体的量 作为滚动面，将其深度为0.3mm以下的平面为50体积％〜70体积％。 在完成钢构件的工序中，对钢构件进行加工处理。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007182603A

公开(公告)日：2007-07-19

申请号：JP2006001068

申请日：2006-01-06

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO ,  NAKAJIMA HIROKAZU

IPC: C21D9/40 ,  C21D1/06 ,  C21D1/10 ,  F16C33/32 ,  F16C33/34 ,  F16C33/64

CPC classification number: Y02P10/253

Abstract: PROBLEM TO BE SOLVED: To provide a rolling member having the improved rolling fatigue life in a hostile environment; a rolling bearing with the long life even in the hostile environment; and to provide a manufacturing method therefor. SOLUTION: The method for manufacturing the rolling member comprises the steps of: preparing a steel member; carburizing or carbonitriding and quenching; induction-hardening; and finishing. In the step of preparing the steel member, the steel member is made from steel and is formed into a contour shape of the rolling member. In the step of carburizing or carbonitriding the steel member, the steel member is carburized or carbonitrided and then quench-hardened. In the step of induction-hardening the steel member, a region including a part to be the rolling surface of the rolling member is further quench-hardened to control an amount of retained austenite in a region between the surface to be the rolling surface and a plane of a 0.3 mm or less in depth therefrom to 50 vol.% to 70 vol.%. In the step of finishing the steel member, the quench-hardened steel member is processed to be finished. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供在恶劣环境中具有改善的滚动疲劳寿命的滚动部件; 即使在恶劣环境下使用寿命长的滚动轴承; 并提供其制造方法。 解决方案：轧制构件的制造方法包括以下步骤：制备钢构件; 渗碳或碳氮共渗和淬火; 感应硬化; 和整理。 在制备钢构件的步骤中，钢构件由钢制成并且形成为滚动构件的轮廓形状。 在对钢构件进行渗碳或碳氮共渗的步骤中，对钢构件进行渗碳或碳氮共渗，然后淬火硬化。 在钢构件的感应硬化步骤中，将作为滚动体的滚动面的一部分的区域进一步淬火硬化，以控制在作为滚动面的表面与a的滚动面的表面之间的区域中的残留奥氏体的量 平面为0.3mm以下，深度为50体积％〜70体积％。 在对钢构件进行精加工的工序中，对淬火后的钢构件进行加工处理。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006291249A

公开(公告)日：2006-10-26

申请号：JP2005110123

申请日：2005-04-06

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO

IPC: C21D1/18 ,  C21D1/10 ,  C21D9/40 ,  F16C33/64

CPC classification number: C21D1/10 ,  C21D1/09 ,  C21D1/18 ,  C21D1/62 ,  C21D9/40 ,  C21D9/62 ,  F16C19/30 ,  F16C33/64 ,  Y02P10/253

Abstract: PROBLEM TO BE SOLVED: To provide equipment for producing a steel-made member with which an increase in the producing cost is restrained and also deformation developed at the hardening time can be restrained. SOLUTION: The equipment for producing the steel-made member is provided with; a blanking device 4 for forming a bearing ring 11 by blanking a steel plate; a high frequency induction heating device 2 for hardening and a die restriction cooling device 3 for quench-hardening the formed bearing ring 11 by cooling the the formed bearing ring 11 to a temperature of ≤M s point after heating to a temperature of ≥A c1 point; and a device 7 for high frequency induction heating for tempering with which the quench-hardened bearing ring 11 is tempered by being heated to the temperature of ≤A c1 point. The high frequency induction heating device 2 for hardening can heat the bearing ring 11 to the temperature of ≥A c1 point by the induction heating. The die restriction cooling device 3 can cool the bearing ring 11 heated to the temperature of ≤M s point by utilizing the die as a cooling member for removing the heat from the bearing ring 11 while restricting the bearing ring by using the die. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 解决的问题：提供抑制生产成本增加的钢制构件的制造装置，并且可以抑制在硬化时产生的变形。

解决方案：生产钢制件的设备设有; 用于通过冲切钢板来形成轴承环11的冲裁装置4; 用于硬化的高频感应加热装置2和用于通过将形成的轴承环11冷却到加热后的≤M S 点的温度来淬火所形成的轴承环11的模具限制冷却装置3 达到≥A c1 点的温度; 以及用于回火的高频感应加热装置7，淬火轴承环11通过加热至≤A c1 点的温度来回火。 用于硬化的高频感应加热装置2可以通过感应加热将轴承环11加热到≥A c1 点的温度。 模具限制冷却装置3可以通过利用模具作为用于从轴承环11移除热量的模具，同时限制轴承环来冷却加热到≤M S 点的温度的轴承环11 通过使用模具。 版权所有（C）2007，JPO＆INPIT