公开(公告)号：US20050271496A1

公开(公告)日：2005-12-08

申请号：US10531386

申请日：2003-10-17

申请人： Shiro Torizuka ,  Kotobu Nagai ,  Eijiro Muramatsu ,  Yoshiyuki Suzuki

发明人： Shiro Torizuka ,  Kotobu Nagai ,  Eijiro Muramatsu ,  Yoshiyuki Suzuki

IPC分类号： B21J1/04 ,  B21K1/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  F16B35/00 ,  F16B35/04

CPC分类号： C22C38/02 ,  B21K1/46 ,  C22C38/04

摘要： A formed product, characterized in that it is produced by using, as a material, a steel having an ultra fine structure comprising ferrite grains having an average grain diameter of 3 μm or less and by a method comprising only a forming step and including none of refining steps; and a method for producting the above formed product with ease. The formed product contains no alloying element and has been subjected to no refining step, and has been imparted with high strength and high toughness by the above ultra fine structure.

摘要翻译： 一种成形产品，其特征在于，通过使用包含平均粒径为3μm以下的铁素体晶粒的超微细结构的钢作为材料，并且仅通过形成步骤的方法，不包括 精炼步骤; 以及容易地生产上述形成的产品的方法。 所形成的产品不含合金元素，并且不经过精炼步骤，并且通过上述超细结构赋予了高强度和高韧性。

公开(公告)号：US09498840B2

公开(公告)日：2016-11-22

申请号：US13388239

申请日：2010-07-30

申请人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburou Nakanishi ,  Masayuki Miyake ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

发明人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburou Nakanishi ,  Masayuki Miyake ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

IPC分类号： B23K9/28 ,  B23K11/11 ,  B23K11/24 ,  B23K11/26 ,  B23K11/31 ,  C22C38/00

CPC分类号： B23K11/115 ,  B23K11/24 ,  B23K11/26 ,  B23K11/312 ,  B23K2101/006 ,  B23K2101/18 ,  B23K2103/04 ,  C22C38/00 ,  Y10T428/12965

摘要： A welding structural part 1 is manufactured by overlapping the surfaces of steel sheets 2, and forming a weld zone by spot welding. The weld zone 3 includes: a weld nugget 4; and a heat affected zone 5 surrounding the weld nugget 4, wherein the hardness in the weld zone increases along an exterior region 6 of the heat affected zone 5 toward the heat affected zone 5, and then decreases along the heat affected zone 5 toward the central region of the weld nugget 4. In the boundary region between the weld nugget 4 and the heat affected zone 5, the weld nugget 4 may have a convex portion 4A bulging into the heat affected zone 5 along the overlapped portion. The steel sheets 2 contain carbon in 0.15 mass % or more.

摘要翻译： 通过重叠钢板2的表面，通过点焊形成焊接区域来制造焊接结构体1。 焊接区3包括：焊点4; 以及围绕焊点4的热影响区域5，其中焊接区域中的硬度沿着热影响区域5的外部区域6朝向热影响区域5增加，然后沿热影响区域5朝向中心 在焊接熔核4与热影响区5之间的边界区域中，焊点4可以具有沿重叠部分向热影响区5内凸出的凸部4A。 钢板2含有0.15质量％以上的碳。

公开(公告)号：US08932416B2

公开(公告)日：2015-01-13

申请号：US13375156

申请日：2010-05-26

申请人： Eizaburou Nakanishi ,  Masayuki Miyake ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehito Itagaki ,  Takahiko Kanai ,  Munehisa Hatta ,  Kazuhiro Kawasaki

发明人： Eizaburou Nakanishi ,  Masayuki Miyake ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehito Itagaki ,  Takahiko Kanai ,  Munehisa Hatta ,  Kazuhiro Kawasaki

IPC分类号： C21D9/00 ,  B21D22/02 ,  B21D22/20 ,  B21D37/16 ,  C21D1/42 ,  C22C38/18 ,  C22C38/22

CPC分类号： B21D22/02 ,  B21D22/20 ,  B21D37/16 ,  C21D1/42 ,  C21D1/673 ,  C21D9/00 ,  C21D2211/001 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/18 ,  C22C38/22 ,  Y02P10/253

摘要： A high-strength die-quenched part 1 is formed by heating a high-strength steel sheet 11 up to an austenite region, hot stamping and cooling inside a mold, and its microstructure has the martensite wherein carbide particles 2 are finely dispersed over an entire region including prior-austenite grain boundaries. It is desirable that the prior-austenite grain size in the microstructure of the high-strength steel sheet, which is a base material, be 10 μm or smaller. The high-strength die-quenched part has high-strength and high-ductility thanks to its martensite.

摘要翻译： 通过将高强度钢板11加热至奥氏体区域，在模具内部进行热冲压和冷却来形成高强度的模具淬火部件1，其微结构具有马氏体，其中碳化物粒子2在整个中精细分散 区域包括先前的奥氏体晶界。 优选的是，作为基材的高强度钢板的微观结构中的以前的奥氏体晶粒尺寸为10μm以下。 高强度模具淬火部分由于其马氏体而具有高强度和高延展性。

公开(公告)号：US20120129006A1

公开(公告)日：2012-05-24

申请号：US13388239

申请日：2010-07-30

申请人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburou Nakanishi ,  Masayuki Miyake ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

发明人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburou Nakanishi ,  Masayuki Miyake ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

IPC分类号： B32B15/01 ,  B23K11/11

CPC分类号： B23K11/115 ,  B23K11/24 ,  B23K11/26 ,  B23K11/312 ,  B23K2101/006 ,  B23K2101/18 ,  B23K2103/04 ,  C22C38/00 ,  Y10T428/12965

摘要： A welding structural part 1 is manufactured by overlapping the surfaces of steel sheets 2, and forming a weld zone by spot welding. The weld zone 3 includes: a weld nugget 4; and a heat affected zone 5 surrounding the weld nugget 4, wherein the hardness in the weld zone increases along an exterior region 6 of the heat affected zone 5 toward the heat affected zone 5, and then decreases along the heat affected zone 5 toward the central region of the weld nugget 4. In the boundary region between the weld nugget 4 and the heat affected zone 5, the weld nugget 4 may have a convex portion 4A bulging into the heat affected zone 5 along the overlapped portion. The steel sheets 2 contain carbon in 0.15 mass % or more.

摘要翻译： 通过重叠钢板2的表面，通过点焊形成焊接区域来制造焊接结构体1。 焊接区3包括：焊点4; 以及围绕焊点4的热影响区域5，其中焊接区域中的硬度沿着热影响区域5的外部区域6朝向热影响区域5增加，然后沿热影响区域5朝向中心 在焊接熔核4与热影响区5之间的边界区域中，焊点4可以具有沿重叠部分向热影响区5内凸出的凸部4A。 钢板2含有0.15质量％以上的碳。

公开(公告)号：US10189112B2

公开(公告)日：2019-01-29

申请号：US14738364

申请日：2015-06-12

申请人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburo Nakanishi ,  Tsuyoshi Yoshida ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

发明人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburo Nakanishi ,  Tsuyoshi Yoshida ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

IPC分类号： B23K11/11 ,  B23K11/24 ,  B23K11/26 ,  B23K11/31 ,  B23K13/08 ,  B23K101/18 ,  B23K103/04

摘要： A welding equipment for metallic materials capable of performing heat treatment such as tempering based on partial heating in spot welding is provided. The welding equipment sandwiches metallic materials with a pair of electrodes, and heats different regions of the metallic materials by energization, with the pair of electrodes maintained at the same position with respect to the metallic materials. The welding equipment includes a first heating means connected to the pair of electrodes for heating and welding the internal region of the circle defined by projecting the cross-sectional area of the axis of the electrodes on the metallic materials by applying power having a low first frequency, a second heating means for heating a ring-shaped region along the circle by applying power having a second frequency that is higher than the first frequency, and an energization control unit for independently controlling the first and the second heating means.

公开(公告)号：US09079266B2

公开(公告)日：2015-07-14

申请号：US13121408

申请日：2009-09-30

申请人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburo Nakanishi ,  Tsuyoshi Yoshida ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

发明人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburo Nakanishi ,  Tsuyoshi Yoshida ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

IPC分类号： B23K11/00 ,  B23K11/11 ,  B23K11/24 ,  B23K11/26 ,  B23K11/31

CPC分类号： B23K11/115 ,  B23K11/24 ,  B23K11/241 ,  B23K11/26 ,  B23K11/312 ,  B23K13/08 ,  B23K2101/18 ,  B23K2103/04

摘要： A welding equipment for metallic materials capable of performing heat treatment such as tempering based on partial heating in spot welding is provided. The welding equipment 1 sandwiches metallic materials 9 with a pair of electrodes 4, 4, and heats different regions of the metallic materials 9 by energization, with the pair of electrodes 4, 4 maintained at the same position with respect to the metallic materials 9. The welding equipment includes a first heating means 6 connected to the pair of electrodes 4, 4 for heating and welding the internal region of the circle defined by projecting the cross-sectional area of the axis of the electrodes on the metallic materials by applying power having a low first frequency, a second heating means 8 for heating a ring-shaped region along the circle by applying power having a second frequency that is higher than the first frequency, and an energization control unit 10 for independently controlling the first and the second heating means 6, 8.

摘要翻译： 提供了一种能够进行热处理的金属材料的焊接设备，例如在点焊中基于部分加热的回火。 焊接设备1用一对电极4,4将金属材料9夹在中间，并且通过通电而加热金属材料9的不同区域，同时电极对4和4相对于金属材料9保持在相同的位置。 焊接设备包括连接到一对电极4,4的第一加热装置6，用于加热和焊接通过将金属材料的轴线的横截面积投影在金属材料上而限定的圆的内部区域， 低第一频率的第二加热装置8，用于通过施加具有高于第一频率的第二频率的功率沿着圆加热环形区域的第二加热装置8以及用于独立地控制第一和第二加热的通电控制单元10 指6,8。

公开(公告)号：US20120118440A1

公开(公告)日：2012-05-17

申请号：US13375156

申请日：2010-05-26

申请人： Eizaburou Nakanishi ,  Masayuki Miyake ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehito Itagaki ,  Takahiko Kanai ,  Munehisa Hatta ,  Kazuhiro Kawasaki

发明人： Eizaburou Nakanishi ,  Masayuki Miyake ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehito Itagaki ,  Takahiko Kanai ,  Munehisa Hatta ,  Kazuhiro Kawasaki

IPC分类号： C22C38/18 ,  C21D1/42

CPC分类号： B21D22/02 ,  B21D22/20 ,  B21D37/16 ,  C21D1/42 ,  C21D1/673 ,  C21D9/00 ,  C21D2211/001 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/18 ,  C22C38/22 ,  Y02P10/253

摘要： A high-strength die-quenched part 1 is formed by heating a high-strength steel sheet 11 up to an austenite region, hot stamping and cooling inside a mold, and its microstructure has the martensite wherein carbide particles 2 are finely dispersed over an entire region including prior-austenite grain boundaries. It is desirable that the prior-austenite grain size in the microstructure of the high-strength steel sheet, which is a base material, be 10 μm or smaller. The high-strength die-quenched part has high-strength and high-ductility thanks to its martensite.

摘要翻译： 通过将高强度钢板11加热至奥氏体区域，在模具内部进行热冲压和冷却来形成高强度的模具淬火部件1，其微结构具有马氏体，其中碳化物粒子2在整个中精细分散 区域包括先前的奥氏体晶界。 优选的是，作为基材的高强度钢板的微观结构中的以前的奥氏体晶粒尺寸为10μm以下。 高强度模具淬火部分由于其马氏体而具有高强度和高延展性。

公开(公告)号：US20110303655A1

公开(公告)日：2011-12-15

申请号：US13121408

申请日：2009-09-30

申请人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburo Nakanishi ,  Tsuyoshi Yoshida ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

发明人： Takahiko Kanai ,  Munehisa Hatta ,  Fumiaki Ikuta ,  Kazuhiro Kawasaki ,  Eizaburo Nakanishi ,  Tsuyoshi Yoshida ,  Kotobu Nagai ,  Masao Hayakawa ,  Takehiko Itagaki

IPC分类号： H05B6/06 ,  B23K11/24

CPC分类号： B23K11/115 ,  B23K11/24 ,  B23K11/241 ,  B23K11/26 ,  B23K11/312 ,  B23K13/08 ,  B23K2101/18 ,  B23K2103/04

摘要： A welding equipment for metallic materials capable of performing heat treatment such as tempering based on partial heating in spot welding is provided. The welding equipment 1 sandwiches metallic materials 9 with a pair of electrodes 4, 4, and heats different regions of the metallic materials 9 by energization, with the pair of electrodes 4, 4 maintained at the same position with respect to the metallic materials 9. The welding equipment includes a first heating means 6 connected to the pair of electrodes 4, 4 for heating and welding the internal region of the circle defined by projecting the cross-sectional area of the axis of the electrodes on the metallic materials by applying power having a low first frequency, a second heating means 8 for heating a ring-shaped region along the circle by applying power having a second frequency that is higher than the first frequency, and an energization control unit 10 for independently controlling the first and the second heating means 6, 8.

摘要翻译： 提供了一种能够进行热处理的金属材料的焊接设备，例如在点焊中基于部分加热的回火。 焊接设备1通过一对电极4,4将金属材料9夹在中间，并通过通电而加热金属材料9的不同区域，同时电极对4,4相对于金属材料9保持在相同的位置。 焊接设备包括连接到一对电极4,4的第一加热装置6，用于加热和焊接通过将金属材料的轴线的横截面积投影在金属材料上而限定的圆的内部区域， 低第一频率的第二加热装置8，用于通过施加具有高于第一频率的第二频率的功率沿着圆加热环形区域的第二加热装置8以及用于独立地控制第一和第二加热的通电控制单元10 指6,8。

公开(公告)号：US20090236015A1

公开(公告)日：2009-09-24

申请号：US12299407

申请日：2007-04-03

申请人： Hideyuki Sasaoka ,  Masamoto Ono ,  Eizaburou Nakanishi ,  Yoshio Okada ,  Tadanobu Inoue ,  Yuuji Kimura ,  Kotobu Nagai

发明人： Hideyuki Sasaoka ,  Masamoto Ono ,  Eizaburou Nakanishi ,  Yoshio Okada ,  Tadanobu Inoue ,  Yuuji Kimura ,  Kotobu Nagai

IPC分类号： C22C38/20 ,  C22C38/22 ,  C22C38/44

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/42 ,  C22C38/44

摘要： There is provided an ultrahigh strength steel sheet containing 0.10 to 0.40 mass % of C, 0.01 to 3.5 mass % of Cr, at least one selected from the group consisting of 0.10 to 2.0 mass % of Mo, 0.20 to 1.5 mass % of W, 0.002 to 1.0 mass % of V, 0.002 to 1.0 mass % of Ti and 0.005 to 1.0 mass % of Nb, 0.02 mass % or less of P and 0.01 mass % or less of S as impurities and the balance being Fe and unavoidable impurities based on the total mass of the steel sheet and having a base structure of lower bainite, a prior austenite grain size of 30 μm or smaller and a tensile strength of 980 MPa or higher. There is also provided an automotive strength part using the ultrahigh strength steel sheet.

摘要翻译： 提供一种超高强度钢板，其含有C：0.10〜0.40质量％，Cr：0.01〜3.5质量％，选自Mo：0.10〜2.0质量％，W：0.20〜1.5质量％ V：0.002〜1.0质量％，Ti：0.002〜1.0质量％，Nb：0.005〜1.0质量％，P：0.02质量％以下，S：0.01质量％以下，余量：Fe和不可避免的杂质 对于钢板的总质量，具有下贝氏体的基体结构，原奥氏体粒径为30μm以下，拉伸强度为980MPa以上。 还提供了使用超高强度钢板的汽车强度部件。

公开(公告)号：US20090185943A1

公开(公告)日：2009-07-23

申请号：US12300982

申请日：2007-04-12

申请人： Tadanobu Inoue ,  Yuuji Kimura ,  Kotobu Nagai

发明人： Tadanobu Inoue ,  Yuuji Kimura ,  Kotobu Nagai

IPC分类号： C22C38/00

CPC分类号： C21D9/46 ,  B21B3/00 ,  C22C38/44

摘要： In a steel plate having tensile strength of 1 GPa or more at the normal temperature, the steel plate is made, stress decrement (SD) after uniform elongation in the stress-strain diagram obtained by using a tabular specimen of which is not less than 1.8×102 MPa, yield ratio (YR) of which is preferably not lower than 0.7, further preferably not lower than 0.8, and matrix structure of which is composed of martensite or bainite, or mixture of martensite and bainite substantially without proeutectoid ferrite, whereby the tough-ductility is improved on a practically utilizable level, and the steel plate becomes possible to be supplied in large quantities by winding up into a coil.

摘要翻译： 在常温下的拉伸强度为1GPa以上的钢板中，通过使用不小于1.8的板状试样获得的应力 - 应变图中，制造钢板，均匀伸长后的应力减小（SD） x102MPa，屈服比（YR）优选为0.7以上，进一步优选为0.8以上，其基体结构由马氏体或贝氏体组成，或马氏体与贝氏体的混合物基本上不具有先共析铁素体，由此韧性 在可实际使用的水平上提高了导电性，并且通过卷绕成线圈可以大量地供给钢板。