公开(公告)号：US08728257B2

公开(公告)日：2014-05-20

申请号：US11795362

申请日：2006-05-29

申请人： Kenji Oi ,  Akihide Nagao ,  Kenji Hayashi

发明人： Kenji Oi ,  Akihide Nagao ,  Kenji Hayashi

IPC分类号： C21D6/00 ,  C21D8/00 ,  C21D10/00

CPC分类号： C21D9/08 ,  C21D9/10 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22

摘要： The invention provides a high tensile strength steel material having a tensile strength of 600 MPa, which is excellent in delayed fracture resistance property, and a method of manufacturing the steel material. As means for this, a steel material contains, in mass percent, C of 0.02 to 0.25%, Si of 0.01 to 0.8%, Mn of 0.5 to 2.0%, Al of 0.005 to 0.1%, N of 0.0005 to 0.008%, P of 0.03% or less, and S of 0.03% or less. In addition, the steel material contains at least one element selected from Mo, Nb, V, and Ti, and contains at least one of Cu, Ni, Cr, W, B, Ca, REM and Mg, as needed. The remainder includes Fe and inevitable impurities. In addition, in the steel material, precipitates having an average grain size of 20 nm or less, which contains at least one of Mo, Nb, V and Ti, are contained in steel in the number of at least 5 per 250000 nm2, and a microstructure includes residual austenite in a volume fraction of 0.5 to 5%. When Ca to be added is specified to be 0.0010% to 0.0020%, it is specified that S is 0.0005% to 0.0020% and O is 0.0008% to 0.0025%. ACR is specified to be 0.2≦ACR(=(Ca−(0.18+130*Ca)*O)/1.25/S)≦1.0.

摘要翻译： 本发明提供一种拉伸强度为600MPa，耐延迟断裂性优异的高强度钢材，以及钢材的制造方法。 作为这种方式，钢材以质量％计含有0.02〜0.25％的C，0.01〜0.8％的Si，0.5〜2.0％的Mn，0.005〜0.1％的Al，0.0005〜0.008％的N，P 为0.03％以下，S为0.03％以下。 此外，钢材含有选自Mo，Nb，V，Ti中的至少一种元素，根据需要含有Cu，Ni，Cr，W，B，Ca，REM和Mg中的至少一种。 余量包括Fe和不可避免的杂质。 此外，在钢材中，含有Mo，Nb，V，Ti中的至少一种的平均粒径为20nm以下的析出物，以每250000nm 2以上的数量含有钢， 显微组织包括体积分数为0.5〜5％的残余奥氏体。 当添加Ca为0.0010〜0.0020％时，规定S为0.0005〜0.0020％，O为0.0008〜0.0025％。 ACR指定为0.2＆nlE; ACR（=（Ca-（0.18 + 130 * Ca）* O）/1.25/S）＆nlE; 1.0。

公开(公告)号：US08604382B2

公开(公告)日：2013-12-10

申请号：US12999001

申请日：2009-06-22

申请人： Koji Yano ,  Kenji Oi ,  Masahito Suzuki ,  Toshifumi Kodama ,  Shigeto Sakashita

发明人： Koji Yano ,  Kenji Oi ,  Masahito Suzuki ,  Toshifumi Kodama ,  Shigeto Sakashita

IPC分类号： B23K26/00

CPC分类号： B23K26/262 ,  B23K26/03 ,  B23K26/032 ,  B23K26/348 ,  B23K2101/06 ,  B23K2101/10 ,  B23K2103/04

摘要： There is provided a method for manufacturing a laser welded steel pipe in which the status of laser welding is accurately assessed, and the assessment is used to modify welding conditions, so that laser welded steel pipes can be manufactured at a high yield rate and in a stable manner. Irradiation point(s) of laser beam(s), with which the longitudinal edges are irradiated from the side of the outer surface, are monitored from the side of the inner surface of an open pipe, and then conditions of welding with the laser beam(s) are assessed to be kept unchanged if any keyhole is found penetrating out of the inner surface of the open pipe, or modified if no keyhole is found penetrating out of the inner surface of the open pipe.

摘要翻译： 提供了一种制造激光焊接钢管的方法，其中准确地评估了激光焊接的状态，并且使用该评估来改变焊接条件，使得可以以高产率制造激光焊接钢管 稳定的方式。 从外表面的侧面照射纵向边缘的激光束的照射点从开放管的内表面侧监测，然后用激光束进行焊接条件 如果发现任何钥匙孔从开口管的内表面渗透出来，则被评估为保持不变，或者如果没有发现钥匙孔渗透到开放管的内表面，则被修改。

公开(公告)号：US20110100965A1

公开(公告)日：2011-05-05

申请号：US12999001

申请日：2009-06-22

申请人： Koji Yano ,  Kenji Oi ,  Masahito Suzuki ,  Toshifumi Kodama ,  Shigeto Sakashita

发明人： Koji Yano ,  Kenji Oi ,  Masahito Suzuki ,  Toshifumi Kodama ,  Shigeto Sakashita

IPC分类号： B23K26/00

CPC分类号： B23K26/262 ,  B23K26/03 ,  B23K26/032 ,  B23K26/348 ,  B23K2101/06 ,  B23K2101/10 ,  B23K2103/04

摘要： There is provided a method for manufacturing a laser welded steel pipe in which the status of laser welding is accurately assessed, and the assessment is used to modify welding conditions, so that laser welded steel pipes can be manufactured at a high yield rate and in a stable manner. Irradiation point(s) of laser beam(s), with which the longitudinal edges are irradiated from the side of the outer surface, are monitored from the side of the inner surface of an open pipe, and then conditions of welding with the laser beam(s) are assessed to be kept unchanged if any keyhole is found penetrating out of the inner surface of the open pipe, or modified if no keyhole is found penetrating out of the inner surface of the open pipe.

摘要翻译： 提供了一种制造激光焊接钢管的方法，其中准确地评估了激光焊接的状态，并且使用该评估来改变焊接条件，使得可以以高产率制造激光焊接钢管 稳定的方式。 从外表面的侧面照射纵向边缘的激光束的照射点从开放管的内表面的侧面监测，然后用激光束进行焊接条件 如果发现任何钥匙孔从开口管的内表面渗透出来，则被评估为保持不变，或者如果没有发现钥匙孔渗透到开放管的内表面，则被修改。

公开(公告)号：US06198384B1

公开(公告)日：2001-03-06

申请号：US09427012

申请日：1999-10-25

申请人： Kenji Oi ,  Takashi Shimizu ,  Hirotaka Ueno ,  Hiroshi Takase

发明人： Kenji Oi ,  Takashi Shimizu ,  Hirotaka Ueno ,  Hiroshi Takase

IPC分类号： G08B100

CPC分类号： G06F1/266

摘要： An interface circuit including an interface controller operated by at least a system power supply or an external power supply. A switch is connected between an interface controller and a system power circuit for conducting system power. The interface controller includes a control signal generating circuit for generating a control signal that closes the switch at a timing that does not affect data transmission performed by the interface circuit in accordance with a trigger signal, which indicates that the system power has gone on. Similarly, the switch is opened at a time when data transmission will not be affected.

摘要翻译： 一种接口电路，包括由至少系统电源或外部电源操作的接口控制器。 开关连接在接口控制器和用于进行系统电源的系统电源电路之间。 接口控制器包括控制信号发生电路，用于产生在不影响由接口电路根据触发信号执行的数据传输的定时关闭开关的控制信号，该触发信号指示系统电源已经导通。 类似地，在数据传输不受影响的时候，开关被打开。

公开(公告)号：US08785806B2

公开(公告)日：2014-07-22

申请号：US12918095

申请日：2009-02-19

申请人： Atsushi Ishigami ,  Kenji Oi ,  Naoya Hayakawa

发明人： Atsushi Ishigami ,  Kenji Oi ,  Naoya Hayakawa

IPC分类号： B23K9/18 ,  B23K9/025 ,  B23K9/028

CPC分类号： B23K9/188 ,  B23K9/0253 ,  B23K9/0282 ,  B23K2101/06 ,  B23K2103/04

摘要： Steel is subjected to multiple-electrode submerged arc welding with three or more electrodes in which a direct-current power source is used to supply current to a first electrode, the welding by the first electrode is carried out at a current density of 250 A/mm2 or more, preferably with a wire diameter of 3.2 mm or less and a weld current of 1,000 A or more, the welding by the second electrode is carried out at a current density of 150 A/mm2 or more, preferably with a weld current of 600 A or more, one of the interelectrode spacings is 23 mm or more on a surface of the steel, and the remaining interelectrode spacings are 20 mm or less.

摘要翻译： 钢用三电极或多层电极进行多电极埋弧焊，其中使用直流电源向第一电极供电，第一电极的焊接以250A / mm2以上，优选线径为3.2mm以下，焊接电流为1000A以上，第二电极的焊接以150A / mm 2以上的电流密度进行，优选为焊接电流 600A以上的电极间距离在钢表面上为23mm以上，其余的电极间间隔为20mm以下。

公开(公告)号：US20140175069A1

公开(公告)日：2014-06-26

申请号：US14113652

申请日：2011-04-28

申请人： Koji Yano ,  Kenji Oi

发明人： Koji Yano ,  Kenji Oi

IPC分类号： B23K26/24

CPC分类号： B23K26/262 ,  B21C37/08 ,  B23K26/0608

摘要： Provided is a method of efficiently manufacturing a high-quality laser welded steel pipe at a high yield ratio while occurrence of underfill is prevented. Specifically, welding is performed using multiple laser beams each having a spot diameter of 0.3 mm or larger on an upper surface of an open pipe (a surface of a steel strip), the plurality of laser beams being arranged such that the sum of spot lengths of the plurality of laser beams, the spot lengths extending perpendicularly to a welding line, on the surface of the steel strip is 0.5 mm or larger and such that a distance between spot centers of the plurality of laser beams in a direction of the welding line falls within 5 mm.

摘要翻译： 提供一种在高产率下有效地制造高品质的激光焊接钢管的方法，同时防止发生底部填充。 具体而言，使用在开口管（钢带的表面）的上表面上具有0.3mm以上的点直径的多个激光束进行焊接，多个激光束被配置为使得光点长度 在钢带的表面上垂直于焊接线延伸的多个激光束的光点长度为0.5mm以上，并且使得多个激光束在焊接线方向上的光点中心之间的距离 落在5毫米以内。

公开(公告)号：US20140124481A1

公开(公告)日：2014-05-08

申请号：US14004271

申请日：2011-04-28

申请人： Koji Yano ,  Hiroyuki Sumi ,  Kenji Oi

发明人： Koji Yano ,  Hiroyuki Sumi ,  Kenji Oi

IPC分类号： B23K26/28 ,  B21C37/08

CPC分类号： B23K26/282 ,  B21C37/08 ,  B23K26/0608 ,  B23K26/262 ,  B23K26/32 ,  B23K2103/04 ,  B23K2103/50

摘要： A method of manufacturing a laser welded steel pipe by forming a steel strip into a cylindrical open pipe and performing laser welding on edges that includes: emitting two laser beams along the edges from an upper surface side of the open pipe, the two laser beams being transmitted through different optical fibers with in-focus spot diameters exceeding 0.3 mm; emitting leading and trailing laser beams each inclined toward a direction in which welding proceeds at an incident angle with respect to a direction perpendicular to an upper surface of the open pipe; setting the incident angle of the leading laser beam to be larger than the incident angle of the trailing laser beam; and setting a gap between a center point of the leading laser beam and a center point of the trailing laser beam on a back surface of the open pipe to 1 mm or larger.

摘要翻译： 一种激光焊接钢管的制造方法，其特征在于，将钢带形成为圆筒状的开口管，并在边缘进行激光焊接，所述边缘包括：从所述开口管的上表面侧沿着边缘发射两束激光，所述两束激光束 透射通过不同的光纤，焦点光点直径超过0.3 mm; 发射前导和后退的激光束，每个激光束朝向相对于垂直于所述开放管的上表面的方向以入射角进行焊接的方向倾斜; 将前导激光束的入射角设定为大于后退激光束的入射角; 并且将开启管的背面上的前导激光束的中心点与后方激光束的中心点之间的间隔设定为1mm以上。

公开(公告)号：US08357252B2

公开(公告)日：2013-01-22

申请号：US12524988

申请日：2008-01-31

申请人： Akihide Nagao ,  Kenji Oi ,  Kenji Hayashi ,  Nobuo Shikanai

发明人： Akihide Nagao ,  Kenji Oi ,  Kenji Hayashi ,  Nobuo Shikanai

IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/22 ,  C22C38/44

CPC分类号： C21D8/0205 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： High tensile strength steels that have both favorable delayed fracture resistance and a tensile strength of 600 MPa or higher and are suitably used in construction machinery, tanks, penstocks, and pipelines, as well as methods for manufacturing such steels are provided. The safety index of delayed fracture resistance (%) is 100×(X1/X0), where X0: reduction of area of a specimen substantially free from diffusible hydrogen, and X1: reduction of area of a specimen containing diffusible hydrogen.

摘要翻译： 提供具有良好的延迟抗断裂性和600MPa以上的抗拉强度并且适用于工程机械，罐，管道和管道的高抗拉强度钢以及用于制造这种钢的方法。 延迟断裂电阻（％）的安全指数为100×（X1 / X0），其中X0：样品的基本上不含扩散氢的面积减少，X1：包含可扩散氢的试样的面积减小。

公开(公告)号：US20100024926A1

公开(公告)日：2010-02-04

申请号：US12524988

申请日：2008-01-31

申请人： Akihide Nagao ,  Kenji Oi ,  Kenji Hayashi ,  Nobuo Shikanai

发明人： Akihide Nagao ,  Kenji Oi ,  Kenji Hayashi ,  Nobuo Shikanai

IPC分类号： C21D8/00 ,  C22C38/00 ,  C22C38/22 ,  C22C38/44 ,  C22C38/02 ,  C22C38/04 ,  C22C38/16 ,  C22C38/20 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/42 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

CPC分类号： C21D8/0205 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： High tensile strength steels that have both favorable delayed fracture resistance and a tensile strength of 600 MPa or higher and are suitably used in construction machinery, tanks, penstocks, and pipelines, as well as methods for manufacturing such steels are provided. The safety index of delayed fracture resistance (%) is 100×(X1/X0), where X0: reduction of area of a specimen substantially free from diffusible hydrogen, and X1: reduction of area of a specimen containing diffusible hydrogen.

摘要翻译： 提供具有良好的延迟抗断裂性和600MPa以上的抗拉强度并且适用于工程机械，罐，管道和管道的高抗拉强度钢以及用于制造这种钢的方法。 延迟断裂电阻（％）的安全指数为100x（X1 / X0），其中X0：试样基本上不含扩散氢的面积减少，X1：包含可扩散氢的试样的面积减小。

公开(公告)号：US20080011642A1

公开(公告)日：2008-01-17

申请号：US11796509

申请日：2007-04-27

申请人： Kenji Oi ,  Nobuyuki Miki

发明人： Kenji Oi ,  Nobuyuki Miki

IPC分类号： B65D25/54

CPC分类号： A61F13/551

摘要： A packaged absorbent product including at least one absorbent article having a body surface and a garment surface. The package includes a transparent film layer and a non-white color layer disposed on the transparent film layer. The package has an opacity of 5-55%, and a speculum gloss of 0.1-90.

摘要翻译： 一种包装吸收性产品，其包括具有身体表面和衣服表面的至少一个吸收制品。 该包装包括透明膜层和设置在透明膜层上的非白色层。 包装的不透明度为5-55％，镜面光泽度为0.1-90。