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    Method of manufacturing laser welded steel pipe
    1.
    发明授权
    Method of manufacturing laser welded steel pipe 有权
    激光焊接钢管制造方法

    公开(公告)号：US09364921B2

    公开(公告)日：2016-06-14

    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： B23K26/262 ,  B23K26/28 ,  B21C37/08 ,  B23K26/06 ,  B23K26/32

    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。

    SUBMERGED ARC WELDING METHOD FOR STEEL PLATE
    2.
    发明申请
    SUBMERGED ARC WELDING METHOD FOR STEEL PLATE 有权
    钢板焊接弧焊方法

    公开(公告)号：US20120325362A1

    公开(公告)日：2012-12-27

    申请号：US13321970

    申请日：2009-09-04

    申请人： Atsushi Ishigami ,  Kenji Oi ,  Naoya Hayakawa

    发明人： Atsushi Ishigami ,  Kenji Oi ,  Naoya Hayakawa

    IPC分类号： F16L9/22 ,  F16L13/02

    CPC分类号： B23K9/18 ,  B23K9/0253 ,  B23K33/006 ,  B23K2101/06 ,  B23K2101/10 ,  B23K2103/04

    摘要： Provided is a submerged arc welding method for a steel plate. In welding the steel plate from an internal surface or an external surface by a submerged arc welding, welding condition is set such that, a cross-sectional area of internal weld metal S1 and a cross-sectional area of external weld metal S2 satisfy the formula (1), the formula (2), and the formula (3), that is, 0.40≦(S1+S2)/t2≦0.80 . . . (1), S1/t2≦0.35 . . . (2), and S2/t2≦0.45 . . . (3), wherein t is a plate thickness of the steel plate (mm), S1 is a cross-sectional area of the internal weld metal (mm2) excluding the cross-sectional area of a portion of the internal weld metal overlapping with the external weld metal after external welding, and S2 is a cross-sectional area of the external weld metal (mm2).

    摘要翻译： 提供一种钢板的埋弧焊接方法。 在通过埋弧焊接从内表面或外表面焊接钢板的情况下，设定焊接条件，使得内部焊接金属S1的横截面积和外部焊接金属S2的截面积满足公式 （1），式（2）和式（3），即0.40＆nlE;（S1 + S2）/t2&nlE=0.80。 。 。 （1），S1 / t2＆nlE; 0.35。 。 。 （2），S2 / t2＆nlE; 0.45。 。 。 （3），其中t是钢板的板厚（mm），S1是内部焊接金属的横截面面积（mm2），不包括与内部焊接金属重叠的部分的横截面面积 外部焊接后的外部焊接金属，S2为外部焊接金属的横截面积（mm2）。

    SUBMERGED ARC WELDING METHOD WITH MULTIPLE ELECTRODES FOR STEEL MATERIAL
    3.
    发明申请
    SUBMERGED ARC WELDING METHOD WITH MULTIPLE ELECTRODES FOR STEEL MATERIAL 有权
    用于钢材的多电极电弧焊接方法

    公开(公告)号：US20110036814A1

    公开(公告)日：2011-02-17

    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

    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。

    WELDED STEEL PIPE JOINED WITH HIGH-ENERGY-DENSITY BEAM AND METHOD FOR PRODUCING THE SAME
    4.
    发明申请
    WELDED STEEL PIPE JOINED WITH HIGH-ENERGY-DENSITY BEAM AND METHOD FOR PRODUCING THE SAME 有权
    用高能量光束接合的焊接钢管及其制造方法

    公开(公告)号：US20110023990A1

    公开(公告)日：2011-02-03

    申请号：US12933241

    申请日：2009-03-30

    申请人： Koji Yano ,  Kenji Oi

    发明人： Koji Yano ,  Kenji Oi

    IPC分类号： F16L9/02 ,  B23K26/00

    CPC分类号： F16L9/02 ,  B21C37/0811 ,  B23K13/046 ,  B23K26/262 ,  B23K2101/06 ,  B23K2103/04 ,  B23K2103/05

    摘要： A steel strip is formed into a cylinder so that opposite ends of the steel strip face each other, while continuously conveying the steel strip. The opposite ends are melted across the entire thickness by irradiating the opposite ends with a high-energy-density beam while applying a pressure with squeeze rolls. A seam is formed by joining the opposite ends, and excess weld metal of the seam on the outer and inner sides of the obtained welded steel pipe is removed by cutting. A repaired seam is then formed by remelting and solidifying a region on the inner side of the welded steel pipe, the region having a depth of 0.5 mm or more from the surface and a width of double or more the width of the seam, and in addition, the center line of the seam is made to coincide with the center line of the repaired seam.

    摘要翻译： 钢带形成为圆筒，使得钢带的相对端彼此面对，同时连续输送钢带。 通过用挤压辊施加压力，通过用高能量密度束照射相对端，使相对端在整个厚度上熔融。 通过接合相对端形成接缝，并且通过切割来除去所获得的焊接钢管的外侧和内侧上的接缝的过量焊缝金属。 然后，通过在焊接钢管的内侧，从表面的深度为0.5mm以上的区域和接缝的宽度的两倍以上的宽度重熔和固化区域来形成修补接缝，并且 另外，接缝的中心线与修补缝的中心线重合。

    Method of constructing network topology and interface circuit
    5.
    发明授权
    Method of constructing network topology and interface circuit 有权
    构建网络拓扑和接口电路的方法

    公开(公告)号：US07317690B2

    公开(公告)日：2008-01-08

    申请号：US09968519

    申请日：2001-10-02

    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： G01R31/08 ,  G06F11/00

    CPC分类号： H04L45/00 ,  H04L45/18 ,  H04L45/48

    摘要： An interface circuit that can disconnect a loop connection among nodes. The interface circuit includes ports, which are connected to bus cables, a state machine and a port controller, which is connected to the ports and the state machine. The state machine determines that a loop connection exists when a process in a predetermined state has been stacked for a predetermined time. When a loop connection exists, the port controller electrically disconnects a port on the loop.

    摘要翻译： 可以断开节点之间的环路连接的接口电路。 接口电路包括连接到总线电缆的端口，状态机和端口控制器，其连接到端口和状态机。 当预定状态的处理已经堆叠了预定时间时，状态机确定存在环路连接。 当存在环路连接时，端口控制器电气断开环路上的端口。

    Submerged arc welding method with multiple electrodes for steel material
    6.
    发明授权
    Submerged arc welding method with multiple electrodes for steel material 有权
    埋弧焊法采用多层电极钢材

    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。

    METHOD OF MANUFACTURING LASER WELDED STEEL PIPE
    7.
    发明申请
    METHOD OF MANUFACTURING LASER WELDED STEEL PIPE 审中-公开
    制造激光焊接钢管的方法

    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。

    METHOD OF MANUFACTURING LASER WELDED STEEL PIPE
    8.
    发明申请
    METHOD OF MANUFACTURING LASER WELDED STEEL PIPE 有权
    制造激光焊接钢管的方法

    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。