公开(公告)号：US20120000567A1

公开(公告)日：2012-01-05

申请号：US13256357

申请日：2010-03-25

申请人： Shinya Sakamoto ,  Takuya Hara ,  Yoshio Terada ,  Takafumi Sebayashi ,  Itsuroh Hiroshige

发明人： Shinya Sakamoto ,  Takuya Hara ,  Yoshio Terada ,  Takafumi Sebayashi ,  Itsuroh Hiroshige

IPC分类号： F16L9/14

CPC分类号： B21C37/08 ,  C21D9/08 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04

摘要： Electric resistance welded steel pipe excellent in deformability and fatigue properties after quenching which enables working into complicated shapes without spheroidization and which improves the fatigue properties after cold working and quenching without carburization are provided. The electric resistance welded steel pipe is characterized by containing, by mass %, C: 0.15 to 0.55%, Si: 0.01 to 0.30%, Mn: 0.5 to 1.5%, Ca: 0.0010 to 0.0030%, S: 0.0005 to 0.0050%, and O: 0.0005 to 0.0050%, having contents of Ca, O, and S satisfying 0.10≦[Ca](1−124[O])/1.25[S]≦2.50, having Ca-based inclusions present at the base material and electric resistance weld zone with an average particle size of 1.0 to 10 μm and a density of 3 to 300/mm2, and having a difference ΔHv of the maximum hardness of the electric resistance weld zone and the average hardness of the base material part satisfying 100 to 500.

摘要翻译： 提供淬火后的变形性和疲劳性优异的电阻焊钢管，其能够在没有球化的情况下进行复杂的形状，并且提供了在没有渗碳的冷加工和淬火之后的疲劳性能。 电阻焊钢管的特征在于，以质量％计含有C：0.15〜0.55％，Si：0.01〜0.30％，Mn：0.5〜1.5％，Ca：0.0010〜0.0030％，S：0.0005〜0.0050％ 和O：0.0005至0.0050％，Ca，O和S的含量满足0.10＆nlE; [Ca]（1-124 [O]）/ 1.25 [S]＆nlE; 2.50，在基体上存在Ca-类夹杂物 材料和电阻焊接区，平均粒径为1.0〜10μm，密度为3〜300个/ mm 2，电阻焊接区的最大硬度和基体的平均硬度差为Dgr; Hv 材料部分满足100〜500。

公开(公告)号：US09757780B2

公开(公告)日：2017-09-12

申请号：US13256357

申请日：2010-03-25

申请人： Shinya Sakamoto ,  Takuya Hara ,  Yoshio Terada ,  Takafumi Sebayashi ,  Itsuroh Hiroshige

发明人： Shinya Sakamoto ,  Takuya Hara ,  Yoshio Terada ,  Takafumi Sebayashi ,  Itsuroh Hiroshige

IPC分类号： B21C37/08 ,  C22C38/00 ,  C21D9/08 ,  C22C38/02 ,  C22C38/04

CPC分类号： B21C37/08 ,  C21D9/08 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04

摘要： Electric resistance welded steel pipe excellent in deformability and fatigue properties after quenching which enables working into complicated shapes without spheroidization and which improves the fatigue properties after cold working and quenching without carburization are provided. The electric resistance welded steel pipe is characterized by containing, by mass %, C: 0.15 to 0.55%, Si: 0.01 to 0.30%, Mn: 0.5 to 1.5%, Ca: 0.0010 to 0.0030%, S: 0.0005 to 0.0050%, and O: 0.0005 to 0.0050%, having contents of Ca, O, and S satisfying 0.10≦[Ca](1−124[O])/1.25[S]≦2.50, having Ca-based inclusions present at the base material and electric resistance weld zone with an average particle size of 1.0 to 10 μm and a density of 3 to 300/mm2, and having a difference ΔHv of the maximum hardness of the electric resistance weld zone and the average hardness of the base material part satisfying 100 to 500.

公开(公告)号：US07296450B2

公开(公告)日：2007-11-20

申请号：US11179898

申请日：2005-07-11

申请人： Yasuyuki Kuroda ,  Yukihisa Kuriyama ,  Manabu Ueda ,  Hirotoshi Hishida ,  Itsuroh Hiroshige ,  Takashi Motoyoshi

发明人： Yasuyuki Kuroda ,  Yukihisa Kuriyama ,  Manabu Ueda ,  Hirotoshi Hishida ,  Itsuroh Hiroshige ,  Takashi Motoyoshi

IPC分类号： B21D19/00

CPC分类号： B21D22/18 ,  B21C37/16

摘要： A production apparatus for a tapered steel pipe which holds the two ends of the steel pipe by shafts on carriers and moves it in the axial direction while rotating it to draw it to a taper by an intermediate working roll, wherein the shaft of the working roll is inclined 20 to 40 degrees with respect to the axis of the steel pipe and a roll caliber of the working roll is made an outwardly curved surface with little difference in roll peripheral speed; the face plate for mounting the working roll is positioned and supported with respect to the body by a hinge mechanism and is fastened to the body by fastening members; and the bearing of the working roll at the side close to the steel pipe is made smaller than the bearing at the side far from the steel pipe and the two bearings are connected by a tie-rod.

摘要翻译： 一种用于锥形钢管的生产设备，其通过支架上的轴将轴的两端保持在钢管的两端，并沿着轴向移动，同时旋转它，通过中间工作辊将其拉成锥形，其中工作辊的轴 相对于钢管的轴线倾斜20〜40度，工作辊的辊口径成为圆周速度差的向外弯曲面; 用于安装工作辊的面板通过铰链机构相对于主体定位和支撑，并通过紧固构件紧固到主体; 使工作辊在靠近钢管的一侧的轴承比在远离钢管的一侧的轴承小，并且两个轴承通过连杆连接。

公开(公告)号：US20060016234A1

公开(公告)日：2006-01-26

申请号：US11179898

申请日：2005-07-11

申请人： Yasuyuki Kuroda ,  Yukihisa Kuriyama ,  Manabu Ueda ,  Hirotoshi Hishida ,  Itsuroh Hiroshige ,  Takashi Motoyoshi

发明人： Yasuyuki Kuroda ,  Yukihisa Kuriyama ,  Manabu Ueda ,  Hirotoshi Hishida ,  Itsuroh Hiroshige ,  Takashi Motoyoshi

IPC分类号： B21B19/00

CPC分类号： B21D22/18 ,  B21C37/16

摘要： A production apparatus for a tapered steel pipe which holds the two ends of the steel pipe by shafts on carriers and moves it in the axial direction while rotating it to draw it to a taper by an intermediate working roll, wherein the shaft of the working roll is inclined 20 to 40 degrees with respect to the axis of the steel pipe and a roll caliber of the working roll is made an outwardly curved surface with little difference in roll peripheral speed; the face plate for mounting the working roll is positioned and supported with respect to the body by a hinge mechanism and is fastened to the body by fastening members; and the bearing of the working roll at the side close to the steel pipe is made smaller than the bearing at the side far from the steel pipe and the two bearings are connected by a tie-rod.

摘要翻译： 一种用于锥形钢管的生产设备，其通过支架上的轴保持钢管的两端，并在轴向方向上移动，同时旋转它，通过中间工作辊将其拉成锥形，其中工作辊的轴 相对于钢管的轴线倾斜20〜40度，工作辊的辊口径成为圆周速度差的向外弯曲面; 用于安装工作辊的面板通过铰链机构相对于主体定位和支撑，并通过紧固构件紧固到主体; 使工作辊在靠近钢管的一侧的轴承比在远离钢管的一侧的轴承小，并且两个轴承通过连杆连接。