公开(公告)号：US20070199632A1

公开(公告)日：2007-08-30

申请号：US11706687

申请日：2007-02-15

申请人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

发明人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

IPC分类号： C22C38/22

CPC分类号： C22C38/60 ,  C21D1/26 ,  C21D1/28 ,  C21D1/32 ,  C21D6/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16H55/32 ,  Y10S148/906

摘要： A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 μm, prior austenite has a grain diameter of 30 μm or less, and the ratio by volume of the residual austenite is less than 25%.

摘要翻译： 具有滚动接触疲劳寿命长的钢部件，能够比常规条件更严格地使用轴承的使用寿命。 钢部件包括含有0.7质量％至1.1质量％的C，0.5质量％至2.0质量％的Si，0.4质量％至2.5质量％的Mn，1.6质量％至1.6质量％ 5.0质量％的Cr，0.1质量％〜小于0.5质量％的Mo，0.010质量％〜0.050质量％的Al，小于0.0015质量％的作为杂质的Sb，余量由 铁和不可避免的杂质，钢被硬化和回火。 在从表面到深度为5mm的部分的钢结构中，残留渗碳体的粒径为0.05〜1.5μm，前奥氏体的粒径为30μm以下，残留奥氏体的体积比 小于25％。

公开(公告)号：US20100139819A1

公开(公告)日：2010-06-10

申请号：US12694674

申请日：2010-01-27

申请人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

发明人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

IPC分类号： C21D8/00 ,  C21D6/00

CPC分类号： C22C38/60 ,  C21D1/26 ,  C21D1/28 ,  C21D1/32 ,  C21D6/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16H55/32 ,  Y10S148/906

摘要： A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 μm, prior austenite has a grain diameter of 30 μm or less, and the ratio by volume of the residual austenite is less than 25%.

摘要翻译： 具有滚动接触疲劳寿命长的钢部件，能够比常规条件更严格地使用轴承的使用寿命。 钢部件包括含有0.7质量％至1.1质量％的C，0.5质量％至2.0质量％的Si，0.4质量％至2.5质量％的Mn，1.6质量％至1.6质量％ 5.0质量％的Cr，0.1质量％〜小于0.5质量％的Mo，0.010质量％〜0.050质量％的Al，小于0.0015质量％的作为杂质的Sb，余量由 铁和不可避免的杂质，钢被硬化和回火。 在从表面到深度为5mm的部分的钢结构中，残留渗碳体的粒径为0.05〜1.5μm，奥氏体的粒径为30μm以下，残留奥氏体的体积比 小于25％。

公开(公告)号：US08118953B2

公开(公告)日：2012-02-21

申请号：US12694674

申请日：2010-01-27

申请人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

发明人： Takashi Iwamoto ,  Kunikazu Tomita ,  Hideto Kimura ,  Takaaki Toyooka ,  Hisato Nishisaka ,  Masao Goto ,  Hisashi Harada

IPC分类号： C21D8/00 ,  C21D9/36 ,  C21D9/40

CPC分类号： C22C38/60 ,  C21D1/26 ,  C21D1/28 ,  C21D1/32 ,  C21D6/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16H55/32 ,  Y10S148/906

摘要： A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 μm, prior austenite has a grain diameter of 30 μm or less, and the ratio by volume of the residual austenite is less than 25%.

摘要翻译： 具有滚动接触疲劳寿命长的钢部件，能够比常规条件更严格地使用轴承的使用寿命。 钢部件包括含有0.7质量％至1.1质量％的C，0.5质量％至2.0质量％的Si，0.4质量％至2.5质量％的Mn，1.6质量％至1.6质量％ 5.0质量％的Cr，0.1质量％〜小于0.5质量％的Mo，0.010质量％〜0.050质量％的Al，小于0.0015质量％的作为杂质的Sb，余量由 铁和不可避免的杂质，钢被硬化和回火。 在从表面到深度为5mm的部分的钢结构中，残留渗碳体的粒径为0.05〜1.5μm，奥氏体的粒径为30μm以下，残留奥氏体的体积比 小于25％。

公开(公告)号：US08302309B2

公开(公告)日：2012-11-06

申请号：US11989106

申请日：2006-07-10

申请人： Isao Hirai ,  Kohei Yoshino ,  Takayasu Takubo ,  Kazuhiko Yoshida ,  Kazukuni Hase ,  Hideto Kimura ,  Kiyoshi Uwai ,  Takaaki Toyooka

发明人： Isao Hirai ,  Kohei Yoshino ,  Takayasu Takubo ,  Kazuhiko Yoshida ,  Kazukuni Hase ,  Hideto Kimura ,  Kiyoshi Uwai ,  Takaaki Toyooka

IPC分类号： B23P17/00

CPC分类号： F16C33/62 ,  B21K1/40 ,  B60B27/00 ,  C21D1/02 ,  C21D1/19 ,  C21D9/40 ,  C21D2221/00 ,  F16C33/64 ,  F16C2326/02 ,  Y10T29/49492 ,  Y10T29/49496 ,  Y10T29/49497 ,  Y10T29/49643 ,  Y10T29/49657 ,  Y10T29/497

摘要： A method is directed to a production of a bearing device for a wheel including an inner member and an outer member rotatable relative to each other through a plurality of rolling elements, in which a component part forming one of the inner member and the outer member is a hot forged product. In the practice of this method, during or at the end of a hot forging step for hot forging the component part, a portion of the component part is cooled by spraying a coolant or by controlling an atmospheric temperature, to thereby render a matrix of the component part to represent a standard structure and render a surface portion of the component part to represent a non-standard structure.

摘要翻译： 一种方法涉及一种用于车轮的轴承装置的制造，所述车轮的轴承装置包括通过多个滚动元件相对于彼此可旋转的内部构件和外部构件，其中形成内部构件和外部构件中的一个的构成部件是 热锻产品。 在该方法的实践中，在热锻造部件的热锻造步骤期间或结束时，通过喷射冷却剂或通过控制大气温度来冷却部件的一部分，由此使得 组件部分以表示标准结构并且使部件的表面部分表示非标准结构。

公开(公告)号：US20080017283A1

公开(公告)日：2008-01-24

申请号：US11795192

申请日：2006-06-30

申请人： Keiichi Maruta ,  Tohru Hayashi ,  Nobutaka Kurosawa ,  Hideto Kimura ,  Takaaki Toyooka ,  Kazukuni Hase ,  Katsumi Yamada

发明人： Keiichi Maruta ,  Tohru Hayashi ,  Nobutaka Kurosawa ,  Hideto Kimura ,  Takaaki Toyooka ,  Kazukuni Hase ,  Katsumi Yamada

IPC分类号： C21D9/46 ,  C22C38/00

CPC分类号： C21D9/46 ,  C22C38/00

摘要： A steel for machine structural use with a better strength-ductility-toughness balance than maraging steel and applications thereof are provided. The steel for machine structural use with excellent strength, ductility, and toughness contains, in percent by mass, more than 0.30% to 0.5% of carbon, 1.0% or less of silicon, 1.5% or less of manganese, 0.025% or less of aluminum, 0.3% to 0.5% of molybdenum, and 0.0005% to 0.01% of boron, and the balance is iron and incidental impurities. The steel has a structure including at least 90% by volume of martensitic structure. The martensitic structure includes blocks having a size of 1.5 μm or less. Dissolved boron is contained in an amount of at least 0.0005% and is present at boundaries of prior austenite grains in a concentration at least 1.5 times that in the prior austenite grains.

摘要翻译： 提供了一种具有比马氏体时效钢更好的强度 - 延性 - 韧性平衡的机械结构用钢及其应用。 具有优异的强度，延展性和韧性的机械结构用钢，以质量％计含有超过0.30％〜0.5％的碳，1.0％以下的硅，1.5％以下的锰，0.025％以下的 铝，0.3〜0.5％的钼和0.0005〜0.01％的硼，余量为铁和杂质。 该钢具有至少90体积％的马氏体组织。 马氏体结构包括尺寸为1.5μm或更小的块。 溶解硼的含量至少为0.0005％，并且在现有奥氏体晶粒的边界处，其浓度至少为现有奥氏体晶粒中的1.5倍。

公开(公告)号：US20090106980A1

公开(公告)日：2009-04-30

申请号：US11989106

申请日：2006-07-10

申请人： Isao Hirai ,  Kohei Yoshino ,  Takayasu Takubo ,  Kazuhiko Yoshida ,  Kazukuni Hase ,  Hideto Kimura ,  Kiyoshi Uwai ,  Takaaki Toyooka

发明人： Isao Hirai ,  Kohei Yoshino ,  Takayasu Takubo ,  Kazuhiko Yoshida ,  Kazukuni Hase ,  Hideto Kimura ,  Kiyoshi Uwai ,  Takaaki Toyooka

IPC分类号： B21D53/10 ,  B21H1/06 ,  F16C33/30 ,  F16C33/34

CPC分类号： F16C33/62 ,  B21K1/40 ,  B60B27/00 ,  C21D1/02 ,  C21D1/19 ,  C21D9/40 ,  C21D2221/00 ,  F16C33/64 ,  F16C2326/02 ,  Y10T29/49492 ,  Y10T29/49496 ,  Y10T29/49497 ,  Y10T29/49643 ,  Y10T29/49657 ,  Y10T29/497

摘要： A method is directed to a production of a bearing device for a wheel including an inner member (1) and an outer member (2) rotatable relative to each other through a plurality of rolling elements (3), in which a component part forming one of the inner member (1) and the outer member (2) is a hot forged product. In the practice of this method, during or at the end of a hot forging step for hot forging the component part, a portion of the component part is cooled by spraying a coolant or by controlling an atmospheric temperature, to thereby render a matrix of the component part to represent a standard structure and render a surface portion of the component part to represent a non-standard structure (30).

摘要翻译： 一种用于车轮的轴承装置的制造方法，其包括通过多个滚动元件（3）相对于彼此可旋转的内部构件（1）和外部构件（2），其中构成一个 的内部构件（1）和外部构件（2）是热锻造产品。 在该方法的实践中，在热锻造部件的热锻造步骤期间或结束时，通过喷射冷却剂或通过控制大气温度来冷却部件的一部分，由此使得 组件部分以表示标准结构，并使部件的表面部分表示非标准结构（30）。

公开(公告)号：US20080264530A1

公开(公告)日：2008-10-30

申请号：US11885213

申请日：2006-06-05

申请人： Kazukuni Hase ,  Hideto Kimura ,  Takaaki Toyooka

发明人： Kazukuni Hase ,  Hideto Kimura ,  Takaaki Toyooka

IPC分类号： C21D8/00 ,  C22C38/58 ,  C22C38/00

CPC分类号： C21D9/30 ,  C21D1/02 ,  C21D1/19 ,  C21D9/0068 ,  C21D2221/00 ,  C22C38/02 ,  C22C38/04 ,  Y10S148/902

摘要： A hot forged product including hardened areas introduced by partial cooling after hot forging, and unhardened areas, wherein Vickers hardness V1 of the hardened areas on the surface and Vickers hardness V2 of the unhardened areas satisfy the following formula (1): (V1−V2)/V2: 0.1 to 0.8.

摘要翻译： 一种热锻造产品，包括在热锻后通过部分冷却引入的硬化区域，以及未硬化区域，其中表面上的硬化区域的维氏硬度V 1和维氏硬度V 2 < 未硬化面积满足下式（1）：（V 1 -Z 2 -V 2）/ V 2：0.1〜0.8。

公开(公告)号：US07827842B2

公开(公告)日：2010-11-09

申请号：US11921320

申请日：2006-06-05

申请人： Kazukuni Hase ,  Hideto Kimura ,  Takaaki Toyooka

发明人： Kazukuni Hase ,  Hideto Kimura ,  Takaaki Toyooka

IPC分类号： B21D37/16

CPC分类号： B21J1/06 ,  B21J9/022 ,  B21K1/08 ,  B21K1/40 ,  B21K29/00 ,  C21D1/18 ,  C21D1/667 ,  C21D7/13 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： A hot forging facility enabling the manufacture of a hot forged product excellent in fatigue properties and cold workability is provided. A heating furnace for heating a steel material and a hot forging apparatus for performing forging of the heated steel material are sequentially arranged on a transport line. A partially cooling apparatus/apparatuses for partially cooling a forged product after hot forging is provided on an exit side of the hot forging apparatus.

摘要翻译： 提供了一种能够制造疲劳性能和冷加工性优异的热锻产品的热锻设备。 用于加热钢材的加热炉和用于进行加热钢材锻造的热锻设备依次布置在输送线上。 在热锻设备的出口侧设置用于在热锻后部分冷却锻造产品的部分冷却装置/设备。

公开(公告)号：US07806992B2

公开(公告)日：2010-10-05

申请号：US11885213

申请日：2006-06-05

申请人： Kazukuni Hase ,  Hideto Kimura ,  Takaaki Toyooka

发明人： Kazukuni Hase ,  Hideto Kimura ,  Takaaki Toyooka

IPC分类号： C21D1/18 ,  C21D8/00 ,  C21D9/00 ,  C22C38/02 ,  C22C38/04

CPC分类号： C21D9/30 ,  C21D1/02 ,  C21D1/19 ,  C21D9/0068 ,  C21D2221/00 ,  C22C38/02 ,  C22C38/04 ,  Y10S148/902

摘要： A hot forged product including hardened areas introduced by partial cooling after hot forging, and unhardened areas, wherein Vickers hardness V1 of the hardened areas on the surface and Vickers hardness V2 of the unhardened areas satisfy the following formula (1): (V1−V2)/V2: 0.1 to 0.8.

摘要翻译： 通过热锻后部分冷却而导入的硬化区域的热锻造产品以及未硬化区域的硬化面积的维氏硬度V1和未硬化面积的维氏硬度V2满足下式（1）：（V1-V2 ）/ V2：0.1〜0.8。

公开(公告)号：US20090126451A1

公开(公告)日：2009-05-21

申请号：US11921320

申请日：2006-06-05

申请人： Kazukuni Hase ,  Hideto Kimura ,  Takaaki Toyooka

发明人： Kazukuni Hase ,  Hideto Kimura ,  Takaaki Toyooka

IPC分类号： B21D43/00

CPC分类号： B21J1/06 ,  B21J9/022 ,  B21K1/08 ,  B21K1/40 ,  B21K29/00 ,  C21D1/18 ,  C21D1/667 ,  C21D7/13 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： A hot forging facility enabling the manufacture of a hot forged product excellent in fatigue properties and cold workability is provided. A heating furnace for heating a steel material and a hot forging apparatus for perfonning forging of the heated steel material are sequentially arranged on a transport line. A partially cooling apparatus/apparatuses for partially cooling a forged product after hot forging is provided on an exit side of the hot forging apparatus.

摘要翻译： 提供了一种能够制造疲劳性能和冷加工性优异的热锻产品的热锻设备。 用于加热钢材的加热炉和用于加热钢材的锻造的热锻设备被顺序地布置在输送线上。 在热锻设备的出口侧设置用于在热锻后部分冷却锻造产品的部分冷却装置/设备。