公开(公告)号：US20060162823A1

公开(公告)日：2006-07-27

申请号：US10526916

申请日：2004-01-13

申请人： Yasuhiro Omori ,  Tohru Hayashi ,  Akihiro Matsuzaki ,  Takaaki Toyooka

发明人： Yasuhiro Omori ,  Tohru Hayashi ,  Akihiro Matsuzaki ,  Takaaki Toyooka

IPC分类号： C21D1/10

CPC分类号： C22C38/02 ,  C21D1/10 ,  C21D6/008 ,  C21D8/0205 ,  C21D9/28 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  Y02P10/253

摘要： The present invention provides a steel product that consists of, by mass %, C: 0.35-0.7%, Si: 0.30-1.1%, Mn: 0.2-2.0%, Al: 0.005-0.25%, Ti: 0.005-0.1%, Mo: 0.05-0.6%, B: 0.0003-0.006%, S: 0.06% or less, P: 0.02% or less, Cr: 0.2% or less, and the balance Fe and inevitable impurities, and has a structure of bainite and/or martensite, the total volume fraction of bainite and martensite being 10% or more, and an induction hardened member that is made of the steel product having a hardened surface layer formed by induction hardening and has a prior austenite grain size of 12 μm or less through the layer thickness. The member has high fatigue strength and therefore is suitable for an automobile drive shaft, an automobile constant velocity joint or the like.

摘要翻译： 本发明提供以质量％计含有C：0.35〜0.7％，Si：0.30〜1.1％，Mn：0.2〜2.0％，Al：0.005〜0.25％，Ti：0.005〜0.1％ Mo：0.05〜0.6％，B：0.0003〜0.006％，S：0.06％以下，P：0.02％以下，Cr：0.2％以下，余量为Fe和不可避免的杂质，具有贝氏体和 /或马氏体，贝氏体和马氏体的总体积分数为10％以上，以及由具有硬化表面层的钢制品的感应淬火构件，所述硬化表面层通过感应淬火形成，并且具有12μm的原奥氏体粒径， 较少穿过层厚度。 该构件具有高的疲劳强度，因此适用于汽车传动轴，汽车等速万向接头等。

公开(公告)号：US07678207B2

公开(公告)日：2010-03-16

申请号：US10526916

申请日：2004-01-13

申请人： Yasuhiro Omori ,  Tohru Hayashi ,  Akihiro Matsuzaki ,  Takaaki Toyooka

发明人： Yasuhiro Omori ,  Tohru Hayashi ,  Akihiro Matsuzaki ,  Takaaki Toyooka

IPC分类号： C21D1/10

CPC分类号： C22C38/02 ,  C21D1/10 ,  C21D6/008 ,  C21D8/0205 ,  C21D9/28 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  Y02P10/253

摘要： We provide a steel product that includes, by mass %, C: 0.35-0.7%, Si: 0.30-1.1%, Mn: 0.2-2.0%, Al: 0.005-0.25%, Ti: 0.005-0.1%, Mo: 0.05-0.6%, B: 0.0003-0.006%, S: 0.06% or less, P: 0.02% or less, Cr: 0.2% or less, and the balance Fe and inevitable impurities, and has a structure of bainite and/or martensite, the total volume fraction of bainite and martensite being 10% or more, and an induction hardened member that is made of the steel product having a hardened surface layer formed by induction hardening and has a prior austenite grain size of 12 μm or less through the layer thickness. The member has high fatigue strength and therefore is suitable for an automobile drive shaft, an automobile constant velocity joint or the like.

摘要翻译： 我们提供一种钢产品，其质量％包括C：0.35-0.7％，Si：0.30-1.1％，Mn：0.2-2.0％，Al：0.005-0.25％，Ti：0.005-0.1％，Mo：0.05 -0.6％，B：0.0003-0.006％，S：0.06％以下，P：0.02％以下，Cr：0.2％以下，余量为Fe和不可避免的杂质，具有贝氏体和/或马氏体的结构 贝氏体和马氏体的总体积分率为10％以上，以及由具有通过感应淬火形成的硬化表面层的钢制品的感应淬火构件，并且通过该方法具有12μm以下的奥氏体晶粒尺寸 层厚度。 该构件具有高的疲劳强度，因此适用于汽车传动轴，汽车等速万向接头等。

公开(公告)号：US20070000582A1

公开(公告)日：2007-01-04

申请号：US10555511

申请日：2004-07-16

申请人： Akihiro Matsuzaki ,  Yasuhiro Omori ,  Nobutaka Kurosawa ,  Tohru Hayashi ,  Takaaki Toyooka ,  Katsumi Yamada

发明人： Akihiro Matsuzaki ,  Yasuhiro Omori ,  Nobutaka Kurosawa ,  Tohru Hayashi ,  Takaaki Toyooka ,  Katsumi Yamada

IPC分类号： C21D1/10

CPC分类号： C22C38/22 ,  C21D1/10 ,  C21D9/28 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/02 ,  C22C38/04 ,  Y02P10/253

摘要： The present invention provides a steel material for induction quenching, containing 0.3% to 0.7% of C, 1.1% or less of Si, 0.2% to 1.1% of Mn, 0.05% to 0.6% of Mo, 0.06% or less of S, 0.025% or less of P, 0.25% or less of Al, 0.3% or less of Cr on a mass basis, and the balance being Fe and unavoidable impurities. The steel material has a ferrite structure and a pearlite structure, the total volume fraction of the ferrite structure and the pearlite structure is 90% or more, the thickness of the ferrite structure is 30 μm or less, and the average prior austenite grain diameter of a hard layer obtained by induction quenching is 12 μm or less. Since having superior machinability and superior fatigue strength after induction quenching, this steel material is suitable, for an automobile drive shaft, constant velocity joint, and the like.

摘要翻译： 本发明提供一种用于感应淬火的钢材，其含有C：0.3〜0.7％，Si为1.1％以下，Mn为0.2〜1.1％，Mo为0.05〜0.6％，S为0.06％以下， 0.025％以下的P，0.25％以下的Al，0.3％以下的Cr，其余为Fe和不可避免的杂质。 该钢材具有铁素体结构和珠光体组织，铁素体组织和珠光体组织的总体积分数为90％以上，铁素体组织的厚度为30μm以下，前者的奥氏体平均粒径为 通过感应淬火得到的硬质层为12μm以下。 由于在感应淬火后具有优异的机械加工性和优异的疲劳强度，因此该钢材适用于汽车传动轴，等速万向接头等。

公开(公告)号：US20070163687A1

公开(公告)日：2007-07-19

申请号：US11587700

申请日：2005-02-01

申请人： Nobutaka Kurosawa ,  Yasuhiro Omori ,  Tohru Hayashi ,  Aklhiro Matsuzaki ,  Takaaki Toyooka

发明人： Nobutaka Kurosawa ,  Yasuhiro Omori ,  Tohru Hayashi ,  Aklhiro Matsuzaki ,  Takaaki Toyooka

IPC分类号： C21D1/00

CPC分类号： F16C33/62 ,  C21D9/28 ,  C21D9/30 ,  C21D2211/001 ,  C22C38/02 ,  C22C38/04 ,  F16C3/06 ,  F16C19/186 ,  F16C2326/02 ,  F16D3/223 ,  F16D2003/22326 ,  F16D2250/00 ,  F16D2300/10 ,  F16H55/06

摘要： A component for machine structural use having improved fatigue strength. The component for machine structural use is produced by subjecting at least a part of a steel material to hardening, and the hardened structure is controlled such that the average grain diameter of former austenitic grains is 12 μm or less and the maximum grain diameter does not exceed four times the average grain diameter.

摘要翻译： 机械结构用部件具有改善的疲劳强度。 用于机械结构使用的部件是通过使钢材的至少一部分进行硬化而进行硬化，并且控制硬化结构，使得前奥氏体晶粒的平均粒径为12μm以下，最大粒径不超过 是平均粒径的四倍。

公开(公告)号：US20060196583A1

公开(公告)日：2006-09-07

申请号：US10556298

申请日：2004-07-16

申请人： Tohru Hayashi ,  Yasuhisa Omori ,  Nobutaka Kurosawa ,  Akihiro Matsuzaki ,  Takaaki Toyooka ,  Katsumi Yamada

发明人： Tohru Hayashi ,  Yasuhisa Omori ,  Nobutaka Kurosawa ,  Akihiro Matsuzaki ,  Takaaki Toyooka ,  Katsumi Yamada

IPC分类号： C22C38/14

CPC分类号： C22C38/02 ,  C21D1/10 ,  C21D9/28 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  Y02P10/253

摘要： The present invention provides a machine structural part composed of 0.3% to 0.7% of C, 0.30% or less of Si, 0.2% to 2.0% of Mn, 0.005% to 0.25% of Al, 0.005% to 0.1% of Ti, 0.05% to 0.6% of Mo, 0.0003% to 0.006% of B, 0.06% or less of S, 0.020% or less of P, 0.0030% or less of O on a mass basis, and the balance being Fe and unavoidable impurities. In addition, the machine structural part has a hard layer on at least a part of a surface thereof formed by induction quenching, an average prior austenite grain diameter of the hard layer is 7 μm or less, and the maximum diameter of a non-metal inclusion composed of oxides is 15 μm or less. Since having a high fatigue strength, this machine structural part is suitable for an automobile drive shaft, constant velocity joint, and the like.

摘要翻译： 本发明提供一种机械结构部件，其由C：0.3％〜0.7％，Si：0.30％以下，Mn：0.2〜2.0％，Al：0.005〜0.25％，Ti：0.005〜0.1％ Mo：0.000〜0.6％，B：0.06％以下，S：0.06％以下，P：0.020％以下，O：0.0030％以下，余量为Fe和不可避免的杂质。 此外，机械结构部件在其通过感应淬火形成的表面的至少一部分上具有硬质层，硬质层的平均先前的奥氏体晶粒直径为7μm以下，非金属的最大直径 由氧化物构成的包合物为15μm以下。 由于具有高的疲劳强度，该机械结构部件适用于汽车传动轴，等速万向节等。

公开(公告)号：US20080247900A1

公开(公告)日：2008-10-09

申请号：US11587731

申请日：2005-07-05

申请人： Toru Hayashi ,  Yasuhiro Ohmori ,  Nobutaka Kurosawa ,  Akihiro Matsuzaki ,  Takaaki Toyooka ,  Katsumi Yamada

发明人： Toru Hayashi ,  Yasuhiro Ohmori ,  Nobutaka Kurosawa ,  Akihiro Matsuzaki ,  Takaaki Toyooka ,  Katsumi Yamada

IPC分类号： C22C38/00 ,  C21D1/42 ,  C22C38/20

CPC分类号： C22C38/02 ,  C21D1/10 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/60 ,  Y02P10/253

摘要： There is provided a component for machine structure having a hardened layer through an induction hardening in at least a part thereof, and more improving fatigue strengths as compared with the conventional ones, in which the hardened layer has a hardness Hv of not less than 750 and an average grain size of prior austenite grains is not more than 7 μm over a full thickness of the hardened layer.

摘要翻译： 提供了一种机械结构部件，其具有通过其至少一部分的感应淬火的硬化层，并且与常规硬化层的硬度Hv不小于750的淬火层相比，具有更高的疲劳强度， 现有奥氏体晶粒的平均晶粒尺寸在硬化层的整个厚度上不超过7μm。

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：US20080264524A1

公开(公告)日：2008-10-30

申请号：US11922746

申请日：2006-10-27

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

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

IPC分类号： C22C38/54

CPC分类号： C21D1/25 ,  C21D1/10 ,  C21D7/02 ,  C21D9/0093 ,  C21D2211/008 ,  C22C38/00 ,  Y02P10/253

摘要： A high-strength steel having excellent character of delayed fracture can be manufactured at a low cost without adding expensive alloy elements such as Ni, Co or V in large quantities. The steel including a steel microstructure in which a ratio of martensite phase is 90% or more and a diameter of prior austenite grains is 10 μm or less, the steel microstructure being made by hardening and then tempering at 100° C. to 400° C., the steel including C: more than 0.30% and not more than 0.50% by mass, Si: not more than 1.0% by mass, Mn: not more than 1.5% by mass, Ti: not more than 0.1% by mass, Mo: not less than 0.3% and not more than 0.50% by mass, B: not less than 0.0005% and not more than 0.01% by mass, and a balance composed of Fe and inevitable impurities.

摘要翻译： 可以以低成本制造具有优异延迟断裂特性的高强度钢，而不需要大量添加诸如Ni，Co或V的昂贵的合金元素。 包括马氏体相的比率为90％以上，原奥氏体晶粒直径为10μm以下的钢组织的钢，钢组织通过硬化然后在100℃回火至400℃ 包括C：大于0.30％且不大于0.50质量％的钢，Si：不大于1.0质量％，Mn：不大于1.5质量％，Ti：不大于0.1质量％ Mo：0.3％以上且0.50质量％以下，B：0.0005％以上且0.01质量％以下，余量由Fe和不可避免的杂质构成。

公开(公告)号：US20060218985A1

公开(公告)日：2006-10-05

申请号：US10541999

申请日：2004-04-08

申请人： Kazuhito Kenmochi ,  Takuya Nagahama ,  Kei Sakata ,  Koji Sugano ,  Toshio Ohnishi ,  Akira Yorifuji ,  Takaaki Toyooka

发明人： Kazuhito Kenmochi ,  Takuya Nagahama ,  Kei Sakata ,  Koji Sugano ,  Toshio Ohnishi ,  Akira Yorifuji ,  Takaaki Toyooka

IPC分类号： B21C1/26

CPC分类号： B21C1/26 ,  B21C1/30 ,  B21C3/06 ,  B21C3/12 ,  B21J7/145

摘要： There are provided a high dimensional accuracy pipe and a manufacturing method thereof, the pipe being in response to wide requirements of sizes, being manufactured at inexpensive cost, and having a sufficient fatigue strength. The detailed structure thereof is as follows. A push-to-pass process is performed in which, while a plug 1 is being charged in a metal pipe 5, the metal pipe is pushed in a hole provided in a die 2 and is then allowed to pass therethrough. As a result, a high dimensional accuracy pipe can be obtained in which at least one of the deviation of the outer diameter, the deviation of the inner diameter, and the deviation of the thickness in the circumferential direction is 3.0% or less as processed.

摘要翻译： 提供了一种高尺寸精度管及其制造方法，该管是响应于尺寸要求较大的要求，以廉价的成本制造并且具有足够的疲劳强度。 其详细结构如下。 进行一次按压处理，其中当将插头1装入金属管5中时，金属管被推入设置在管芯2中的孔中，然后被允许通过。 结果，可以获得高度尺寸精度的管，其中外径的偏差，内径的偏差和周向厚度的偏差中的至少一个被处理为3.0％以下。

公开(公告)号：US06949728B2

公开(公告)日：2005-09-27

申请号：US10476800

申请日：2001-08-02

申请人： Takaaki Toyooka ,  Takatoshi Okabe ,  Motoaki Itadani ,  Masatoshi Aratani ,  Osamu Kondo

发明人： Takaaki Toyooka ,  Takatoshi Okabe ,  Motoaki Itadani ,  Masatoshi Aratani ,  Osamu Kondo

IPC分类号： B23K13/08 ,  B23K13/02 ,  B23K31/02 ,  H05B6/10 ,  B23K13/01 ,  B21D39/00

CPC分类号： B23K13/025 ,  B23K31/02 ,  B23K2101/06

摘要： An impeder, for manufacturing a welded pipe, including an insulating case 4 containing laminations 10 having coated steel sheets 8 formed by providing an insulating coating on untreated steel sheets having a thickness of 0.3 mm or less and an insulating case 8 containing the laminations, wherein the steel sheets contain 1.5-20% of Cr, 2.5-10% of Si, and 100 ppm or less of C and N in total, or further contain one or more of Al, Mn, and P, where the content of Al is 5% or less and the content of each of Mn and P is 1% or less, the remainder being Fe and unavoidable impurities; and preferably have a resistivity of 60 μΩ·cm or more.

摘要翻译： 一种用于制造焊接管的阻碍物，包括：绝缘壳体4，其包含通过在厚度为0.3mm以下的未处理钢板上提供绝缘涂层而形成的具有镀覆钢板8的叠片10和包含所述叠片的绝缘壳体8， 钢板含有1.5-20％的Cr，2.5-10％的Si和100ppm或更少的C和N，或者还包含Al，Mn和P中的一种或多种，​​Al的含量为 5％以下，Mn和P的含量为1％以下，余量为Fe和不可避免的杂质; 并且优选具有60μΩa.cm以上的电阻率。