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：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：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：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：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：US20070269678A1

公开(公告)日：2007-11-22

申请号：US11798674

申请日：2007-05-16

申请人： Masamoto Ono ,  Hideyuki Sasaoka ,  Eizaburou Nakanishi ,  Yoshio Okada ,  Yoshiharu Michiura ,  Masaaki Takagi

发明人： Masamoto Ono ,  Hideyuki Sasaoka ,  Eizaburou Nakanishi ,  Yoshio Okada ,  Yoshiharu Michiura ,  Masaaki Takagi

IPC分类号： C25D5/10 ,  C22C38/18

CPC分类号： C22C38/02 ,  B23K11/16 ,  C21D8/0226 ,  C21D9/46 ,  C21D9/50 ,  C22C38/04 ,  C22C38/18 ,  C22C38/40 ,  C22C38/42 ,  Y10T428/12799

摘要： There is provided a high-tensile steel sheet containing 0.15 to 0.25 mass % of C, 0.1 to 2.0 mass % of Si, 0.10 to 1.0 mass % of Mn, 0.5 to 3.5 mass % of Cr, 0.02 mass % or less of P, 0.01 mass % or less of S and the balance being Fe and unavoidable impurities based on the total mass of the steel sheet and satisfying a content ratio of Mn/(Mn+Cr)

摘要翻译： 提供了含有0.15〜0.25质量％的C，0.1〜2.0质量％的Si，0.10〜1.0质量％的Mn，0.5〜3.5质量％的Cr，0.02质量％以下的P的高强度钢板， 0.01质量％以下的S，余量为Fe和不可避免的杂质，基于钢板的总质量，满足Mn /（Mn + Cr）<0.50的含量比。

公开(公告)号：US06415638B1

公开(公告)日：2002-07-09

申请号：US09534261

申请日：2000-03-24

申请人： Hiroshi Sakurai ,  Eizaburou Nakanishi ,  Shinji Ooe ,  Masanobu Hayasaka ,  Junji Katamura

发明人： Hiroshi Sakurai ,  Eizaburou Nakanishi ,  Shinji Ooe ,  Masanobu Hayasaka ,  Junji Katamura

IPC分类号： B21D2602

CPC分类号： B21D22/125 ,  B21D22/105

摘要： For forming a tubular work into a shaped hollow product by using hydroforming process, a method and a device are described. In the method, female and male dies are prepared. The female die has a longitudinally extending cavity which has a polygonal cross section when receiving the male die. The tubular work is placed into the cavity of the female die. The interior of the tubular work is then fed with a hydraulic fluid, and the pressure of the fluid is increased to a given level. The given level is smaller than a critical level that causes a bulging of the tubular work. The male die is then pressed against the tubular work to deform the same while keeping the hydraulic fluid at the given level, thereby forming a shaped hollow product that has a polygonal cross section that conforms to that of the cavity. The pressing work is continued until a circumferential length of the shaped hollow product becomes shorter than that of the tubular work.

摘要翻译： 为了通过使用液压成型工艺将管状工件形成成型的中空产品，描述了一种方法和装置。 在该方法中，制备阴模和阴模。 阴模具有纵向延伸的空腔，当接收阳模时，其具有多边形横截面。 将管状工件放入阴模的空腔中。 然后，管状工件的内部被供给液压流体，并且流体的压力增加到给定的水平。 给定的水平小于导致管状工作膨胀的临界水平。 然后将阳模压在管状工件上以使其变形，同时将液压流体保持在给定的水平，从而形成具有与腔的多边形横截面一致的成形中空产品。 压制工作继续进行，直到成形中空制品的圆周长度变得短于管状工件的圆周长度。

公开(公告)号：US06752451B2

公开(公告)日：2004-06-22

申请号：US10311518

申请日：2002-12-13

申请人： Shinya Sakamoto ,  Daigo Sumimoto ,  Yoshio Terada ,  Yukihisa Kuriyama ,  Hiroshi Sakurai ,  Eizaburou Nakanishi

发明人： Shinya Sakamoto ,  Daigo Sumimoto ,  Yoshio Terada ,  Yukihisa Kuriyama ,  Hiroshi Sakurai ,  Eizaburou Nakanishi

IPC分类号： B21D4702

CPC分类号： B62D21/152 ,  B21C1/22 ,  B21D26/033 ,  B21D26/047 ,  B21D47/02 ,  B62D21/00 ,  B62D25/00 ,  B62D25/20 ,  B62D29/007 ,  F16F7/12 ,  Y10T29/49622

摘要： An object of the present invention is to provide a lightweight strengthening member for an automobile, excellent in crush resistance in the axial direction and having high flexural strength. Further, another object thereof is to provide a strengthening member which does not generating cracks even when a high-strength steel sheet is used. The present invention provides: a strengthening member 1 for an automobile, being a lengthy strengthening member 1 having concave portions 3 at the four corners of a basic rectangular cross section 2 and forming a cruciform closed section as a whole, characterized in that the wall thickness of the concave portions 3 is 5 to 30% thicker than the wall thickness of the portions excluding the concave portions, namely, the side walls 4 and the top walls 5; further, a strengthening member 1 for an automobile, characterized in that the hardness of the concave portions 3 is 5% or more higher than the hardness of the portions excluding the concave portions, namely, the side walls 4 and the top walls 5; and furthermore, a strengthening member 1 for an automobile formed by drawing or hydroforming.

摘要翻译： 本发明的一个目的是提供一种用于汽车的轻质加强件，在轴向方向上具有优异的抗压碎性并且具有高弯曲强度。 此外，其另一个目的是提供即使在使用高强度钢板时也不会产生裂缝的加强构件。 本发明提供一种用于汽车的强化构件1，它是一个长的加强构件1，其具有在基本矩形横截面2的四个角处的凹入部分3，并且整体形成十字形封闭区域，其特征在于，壁厚 的凹部3比除了凹部以外的部分即侧壁4和顶壁5的壁厚厚5〜30％ 另外，一种用于汽车的加强件1，其特征在于，凹部3的硬度比不包括凹部的部分即侧壁4和顶壁5的硬度高5％以上。 并且还包括用于通过拉伸或液压成形形成的汽车用加强件1。