公开(公告)号：US5599264A

公开(公告)日：1997-02-04

申请号：US415470

申请日：1995-04-03

申请人： Yuji Hashimoto ,  Takaaki Toyooka ,  Susumu Itatani ,  Tsutomu Ide

发明人： Yuji Hashimoto ,  Takaaki Toyooka ,  Susumu Itatani ,  Tsutomu Ide

IPC分类号： B21B27/02 ,  B21C37/08 ,  B21C37/083 ,  B21D5/12

CPC分类号： B21C37/08 ,  B21C37/083 ,  B21D5/12 ,  B21B27/028

摘要： A roller width adjusting device for a divided molding roller has a hollow main shaft journalled at each end to side bearings so as to be rotatable around a rotary axis thereof. The hollow main shaft is connected at one end to a driving source for rotating the main shaft around the rotary axis. A pair of hollow cylindrical roller holders are disposed on an outer periphery of intermediate portions of the main shaft so as to be slidable along the rotary axis of the main shaft. The roller holders may be fixed in any position along the rotary axis by a holding device. A pair of divided type molding rollers are attached to the roller holders, respectively. An adjusting shaft is rotatably disposed in the hollow shaft along its rotary axis. Each end of the adjusting shaft has a screw thread with opposed screw directions. One end of the adjusting shaft has a rotatable handle. By rotating the handle in one direction the interval between divided rollers is increased thus moving the roller holders farther apart; whereas by rotating the handle in the other direction the interval is decreased thus drawing the roller holders closer together. Once in position, the divided rollers are slidably fixed by the holding device such that pipe of that particular size can be manufactured.

摘要翻译： 用于分割成形辊的辊宽度调节装置具有中空主轴，其在每个端部与侧面轴承支承，以便能够围绕其旋转轴线旋转。 中空主轴在一端连接到用于使主轴绕旋转轴线旋转的驱动源。 一对中空的圆柱滚子保持器设置在主轴的中间部分的外周上，以便能够沿着主轴的旋转轴线滑动。 辊保持器可以通过保持装置沿着旋转轴线固定在任何位置。 一对分割型成型辊分别安装在滚子支架上。 调节轴沿其旋转轴线可旋转地设置在中空轴中。 调节轴的每一端都有一个螺纹相对的螺纹方向。 调节轴的一端具有可旋转的手柄。 通过在一个方向上旋转手柄，分离的辊之间的间隔增加，从而使辊保持器更远离; 而通过沿另一方向旋转手柄，间隔减小，从而将辊保持器更靠近在一起。 一旦就位，分离的辊由保持装置可滑动地固定，使得可以制造具有特定尺寸的管。

公开(公告)号：US5784911A

公开(公告)日：1998-07-28

申请号：US803923

申请日：1997-02-21

申请人： Yuji Hashimoto ,  Takaaki Toyooka ,  Motoaki Itatani ,  Susumu Itatani ,  Tsutomu Ide

发明人： Yuji Hashimoto ,  Takaaki Toyooka ,  Motoaki Itatani ,  Susumu Itatani ,  Tsutomu Ide

IPC分类号： B21C37/08 ,  B21D5/08 ,  B21D39/02 ,  B21D51/28

CPC分类号： B21C37/0822 ,  B21D5/086

摘要： An apparatus for manufacturing a welded pipe. The apparatus includes a cage or cluster roller molding system. In either case, a rotary axis of each roller is slanted counterclockwise or clockwise with respect to a manufacturing line direction of the apparatus. The adjustable positioning of the rotary axis reduces vertical slip caused when the strip of material passes along the contact surface of the roller.

摘要翻译： 一种用于制造焊接管的设备。 该装置包括笼或群辊成型系统。 在任一情况下，每个辊的旋转轴相对于装置的制造线方向逆时针或顺时针倾斜。 旋转轴的可调节定位减少了当材料条沿着辊的接触表面通过时产生的垂直滑动。

公开(公告)号：US5301869A

公开(公告)日：1994-04-12

申请号：US721566

申请日：1991-07-29

申请人： Takaaki Toyooka ,  Yuuji Hashimoto ,  Susumu Itadani ,  Tsutomu Ide

发明人： Takaaki Toyooka ,  Yuuji Hashimoto ,  Susumu Itadani ,  Tsutomu Ide

IPC分类号： B21C37/08 ,  B21D5/12 ,  B23K37/053 ,  B23K37/04

CPC分类号： B23K37/053 ,  B21C37/08 ,  B21D5/12

摘要： The present invention is a machine for manufacturing welded steel pipes, in which an edge bending roll for constraining under pressure a strip from its pipe edge portions to the boundaries between the pipe edge portions and its pipe side portions to bend the strip, a first center bending roll for constraining under pressure the pipe side portions to bend the pipe side portions, second to fourth center bending rolls for constraining under pressure the strip from the boundaries between the pipe side portions and its pipe bottom portion to the pipe bottom portion and applying lateral pressure to the pipe from both sides to bend the boundaries and the pipe bottom portion and a plurality of cage rolls arranged on both the sides of these center bending rolls, first and second fin pass rolls for further forming under pressure the pipe, are arranged in order from the stream side to the downstreamside of a roll forming process. And at least the edge bending roll, the first center bending roll, the first and second fin pass rolls each has a driving means provided thereon, and all the upper rolls of the first to fourth center bending rolls are set in one housing, and all the bottom roll stands of the first to fourth center bending rolls or all the bottom roll stands of the second to fourth center bending rolls are set on one common sub-base plate.

摘要翻译： PCT No.PCT / JP90 / 01572 Sec。 371日期1991年7月29日 102（e）日期1991年7月29日PCT 1990年12月4日PCT PCT。 出版物WO91 / 08064 日本1991年6月13日。本发明是一种用于制造焊接钢管的机器，其中边缘弯曲辊用于在压力条件下从其管边缘部分到管边缘部分与其管侧部分之间的边界 弯曲带材，第一中心弯曲辊，用于在压力下约束管道侧部分以弯曲管道侧部分;第二至第四中心弯曲辊，用于在压力下约束条带从管道侧部分和其管道底部之间的边界到 管底部并且从两侧向管道施加侧向压力以弯曲边界和管底部以及布置在这些中心弯曲辊的两侧的多个保持架辊，用于进一步成形的第一和第二翅片通过辊 管道的压力从辊侧成形过程的流侧到下游依次排列。 并且至少边缘弯曲辊，第一中心弯曲辊，第一和第二翅片通过辊各自具有设置在其上的驱动装置，并且第一至第四中心弯曲辊的所有上辊被设置在一个壳体中，并且全部 将第一至第四中心弯曲辊或第二至第四中心弯曲辊的所有底辊架的底辊架设置在一个共同的底座板上。

公开(公告)号：US5673579A

公开(公告)日：1997-10-07

申请号：US662434

申请日：1996-06-10

申请人： Yuuji Hashimoto ,  Takaaki Toyooka ,  Motoaki Itadani ,  Susumu Itadani ,  Tsutomu Ide

发明人： Yuuji Hashimoto ,  Takaaki Toyooka ,  Motoaki Itadani ,  Susumu Itadani ,  Tsutomu Ide

IPC分类号： B23K13/00 ,  B21D5/12 ,  B21D39/02 ,  B21B37/00 ,  B21D37/08 ,  B21D51/23

CPC分类号： B21D5/12

摘要： In welded pipe manufacturing a steel strip is fed and bent by forming rolls into a pipe. A load detector is provided for a roll rotary shaft of each forming roll; a forming roll inclination adjustment device inclines the roll rotary shaft. The roll shaft load is measured to cause inclining of the rotary shaft counterclockwise or clockwise on a plane formed by the rotational axis of the forming roll and the advancing direction of the steel strip.

摘要翻译： 在焊接管制造中，钢带通过将辊成型为管而进给和弯曲。 为每个成型辊的辊旋转轴提供负载检测器; 成形辊倾斜调节装置倾斜辊旋转轴。 测量辊轴负载以使旋转轴在成形辊的旋转轴线和钢带的前进方向形成的平面上逆时针或顺时针倾斜。

公开(公告)号：US06682829B2

公开(公告)日：2004-01-27

申请号：US10160820

申请日：2002-05-31

申请人： Takaaki Toyooka ,  Masatoshi Aratani ,  Yoshikazu Kawabata ,  Yuji Hashimoto ,  Akira Yorifuji ,  Takatoshi Okabe ,  Takuya Nagahama ,  Mitsuo Kimura

发明人： Takaaki Toyooka ,  Masatoshi Aratani ,  Yoshikazu Kawabata ,  Yuji Hashimoto ,  Akira Yorifuji ,  Takatoshi Okabe ,  Takuya Nagahama ,  Mitsuo Kimura

IPC分类号： B32B1518

CPC分类号： C22C38/02 ,  C21D8/10 ,  C22C38/06 ,  C22C38/28 ,  C22C38/38 ,  Y10T428/12965

摘要： A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition comprising, on the basis of mass percent: about 0.05% to about 0.3% C; about 2.0% or less of Si; more than about 1.5% to about 5.0% Mn; about 0.1% or less of P; about 0.01% or less of S; about 0.1% or less of Cr; about 0.1% or less of Al; about 0.1% or less of Nb; about 0.3% or less of Ti; and about 0.01% or less of N; and by diameter-reduction-rolling the treated steel pipe at a accumulated diameter reduction rate of at least about 35% and a finish rolling temperature of about 500° C. to about 900° C. The welded steel pipe exhibits excellent hydroformability, i.e., has a tensile strength of about 780 MPa or more and a n×r product of at least about 0.15. The treated steel pipe is preferably diameter-reduction-rolled at a accumulated diameter reduction rate of at least about 20% below the Ar3 transformation point.

摘要翻译： 焊接钢管是通过加热或浸渍具有钢质组成的未经处理的焊接钢管形成的，所述焊接钢管基于质量百分比：约0.05％至约0.3％C; 约2.0％以下的Si; 大于约1.5％至约5.0％的Mn; 约0.1％以下的P; 约0.01％以下的S; 约0.1％以下的Cr; 约0.1％以下的Al; 约0.1％以下的Nb; 约0.3％以下的Ti; 和约0.01％以下的N; 并且以约至少约35％的累积直径减小率和约500℃至约900℃的精轧温度对经处理的钢管进行直径缩小轧制。焊接钢管显示出优异的加氢性能， 具有约780MPa或更高的拉伸强度和至少约0.15的nxr产品。 经处理的钢管优选以低于Ar 3相变点至少约20％的累积直径减小率进行直径减小轧制。

公开(公告)号：US06723453B2

公开(公告)日：2004-04-20

申请号：US10160798

申请日：2002-05-31

申请人： Takaaki Toyooka ,  Masatoshi Aratani ,  Yoshikazu Kawabata ,  Yuji Hashimoto ,  Akira Yorifuji ,  Takatoshi Okabe ,  Takuya Nagahama ,  Mitsuo Kimura

发明人： Takaaki Toyooka ,  Masatoshi Aratani ,  Yoshikazu Kawabata ,  Yuji Hashimoto ,  Akira Yorifuji ,  Takatoshi Okabe ,  Takuya Nagahama ,  Mitsuo Kimura

IPC分类号： B32B1518

CPC分类号： C21D8/10 ,  C22C38/04 ,  Y10T428/12965

摘要： A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.05% to about 0.2% C; about 0.2% or less of Si; about 1.5% or less of Mn; about 0.1% or less of P; about 0.01% or less of S; about 0.1% or less of Al; and about 0.01% or less of N; and by reduction-rolling the treated steel pipe at a cumulative reduction rate of at least about 35% and a final rolling temperature of about 500° C. to about 900° C. The welded steel pipe exhibits excellent hydroformability, i.e., has a tensile strength of at least about 400 MPa and an n×r product of at least about 0.22. The treated steel pipe is preferably reduction-rolled at a cumulative reduction rate of at least about 20% below the Ar3 transformation point. The welded steel pipe is suitable for forming structural components.

摘要翻译： 焊接钢管是通过加热或浸渍含有基于质量％：约0.05％至约0.2％C的钢组合物的未处理焊接钢管形成的; 约0.2％以下的Si; 约1.5％以下的Mn; 约0.1％以下的P; 约0.01％以下的S; 约0.1％以下的Al; 和约0.01％以下的N; 并且通过将处理后的钢管以至少约35％的累积压下率和约500℃至约900℃的最终轧制温度进行还原轧制。焊接钢管表现出优异的加氢成形性，即具有拉伸强度 至少约400MPa的强度和至少约0.22的nxr产物。 经处理的钢管优选以低于Ar 3相变点至少约20％的累积压缩率进行还原轧制。 焊接钢管适用于形成结构件。

公开(公告)号：US06331216B1

公开(公告)日：2001-12-18

申请号：US09214226

申请日：1998-12-30

申请人： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Nobuki Tanaka ,  Taro Kanayama ,  Osamu Furukimi ,  Masahiko Morita ,  Takaaki Hira ,  Saiji Matsuoka

发明人： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Nobuki Tanaka ,  Taro Kanayama ,  Osamu Furukimi ,  Masahiko Morita ,  Takaaki Hira ,  Saiji Matsuoka

IPC分类号： C21D713

CPC分类号： C21D8/10 ,  C21D2201/00 ,  C21D2211/005

摘要： The steel pipe has a structure composed mainly of ferrite or ferrite plus pearlite or ferrite plus cementite. The steel pipe is characterized by grain size not greater than 3 &mgr;m, preferably not greater than 1 &mgr;m, elongation greater than 20%, tensile strength (TS:MPa) and elongation (E1:%) whose product is greater than 10000, and percent ductile fracture greater than 95%, preferably 100%, measured by Charpy impact test on an actual pipe at −100° C. The structure is characterized by C: 0.005-0.03%, Si: 0.01-3.0%, Mn: 0.01-2.0%, and Al: 0.001-0.10% on a weight basis, and is composed of ferrite or ferrite and a secondary phase, with ferrite grains being not greater than 3 &mgr;m and the secondary phase having an areal ratio not more than 30%. A steel pipe stock having the above-mentioned composition is heated at a temperature of (Ac1+50° C.) to 400° C. and subsequently reduced at a rolling temperature of (Ac1+50° C.) to 400° C. such that the cumulative reduction of diameter is greater than 20%. The reducing is preferably performed such that at least one of rolling passes reduces the diameter by more than 6% per pass. The steel pipe will have high ductility and high strength and will be superior in toughness and stress corrosion cracking resistance, if the content of C, Si, Mn, and other alloying elements is limited low and reducing is performed at the temperature specified above. The resulting steel pipe has good fatigue resistance and is suitable for use as line pipe.

摘要翻译： 钢管具有主要由铁素体或铁素体加珠光体或铁素体和渗碳体组成的结构。 钢管的特征在于，其粒径不大于3μm，优选不大于1μm，伸长率大于20％，拉伸强度（TS：MPa）和伸长率（E1：％）大于10000， 延性断裂大于95％，优选100％，通过夏比冲击试验在-100℃的实际管上测量。该结构的特征在于C：0.005-0.03％，Si：0.01-3.0％，Mn：0.01-2.0 ％，Al：0.001-0.10％，由铁素体或铁素体和二次相组成，铁素体晶粒不大于3μm，第二相的面积比不大于30％。 将具有上述组成的钢管坯料在（Ac1 + 50℃）的温度下加热至400℃，随后在（Ac1 + 50℃）的轧制温度下降低至400℃。 使得直径的累积减小大于20％。 优选地进行还原，使得至少一个轧制通道将直径每次通过减少6％以上。 如果C，Si，Mn和其他合金元素的含量低，并且在上述规定的温度下进行还原，则钢管将具有高延展性和高强度，并且在韧性和耐应力腐蚀开裂性方面优异。 所得钢管具有良好的抗疲劳性能，适用于管线管。

公开(公告)号：US06749954B2

公开(公告)日：2004-06-15

申请号：US10161407

申请日：2002-05-31

申请人： Takaaki Toyooka ,  Masatoshi Aratani ,  Yoshikazu Kawabata ,  Yuji Hashimoto ,  Akira Yorifuji ,  Takatoshi Okabe ,  Takuya Nagahama ,  Mitsuo Kimura

发明人： Takaaki Toyooka ,  Masatoshi Aratani ,  Yoshikazu Kawabata ,  Yuji Hashimoto ,  Akira Yorifuji ,  Takatoshi Okabe ,  Takuya Nagahama ,  Mitsuo Kimura

IPC分类号： B32B1518

CPC分类号： B21D26/047 ,  B21B3/02 ,  B21B17/14 ,  B21B45/004 ,  B21C37/06 ,  B21D26/039 ,  B21D26/043 ,  C21D8/10 ,  Y10T428/12965

摘要： A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.03% to about 0.2% C, about 2.0% or less of Si, not less than about 1.0% to about 1.5% Mn, about 0.1% or less of P, about 0.01% or less of S, about 1.0% or less of Cr, about 0.1% or less of Al, about 0.1% or less of Nb, about 0.1% or less of Ti, about 0.1% or less of V, and about 0.01% or less of N; and by reduction-rolling the treated steel pipe at a cumulative reduction rate of at least about 35% and a final rolling temperature of about 500° C. to about 900° C. The welded steel pipe exhibits excellent hydroformability, i.e., has a tensile strength of at least about 590 MPa and an n×r product of at least about 0.22. The treated steel pipe is preferably reduction-rolled at a cumulative reduction rate of at least about 20% below the Ar3 transformation point.

摘要翻译： 焊接钢管是通过加热或浸渍具有钢质组成的未经处理的焊接钢管形成的，所述钢组合物基于质量百分比：约0.03％至约0.2％C，约2.0％或更少的Si，不小于约1.0 至约1.5％的Mn，约0.1％或更少的P，约0.01％或更少的S，约1.0％或更少的Cr，约0.1％或更少的Al，约0.1％或更少的Nb，约0.1％ 或更少的Ti，约0.1％或更少的V和约0.01％或更少的N; 并且通过将处理后的钢管以至少约35％的累积压下率和约500℃至约900℃的最终轧制温度进行还原轧制。焊接钢管表现出优异的加氢成形性，即具有拉伸强度 至少约590MPa的强度和至少约0.22的nxr产物。 经处理的钢管优选以低于Ar 3相变点至少约20％的累积压缩率进行还原轧制。

公开(公告)号：US06290789B1

公开(公告)日：2001-09-18

申请号：US09254024

申请日：1999-02-26

申请人： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Taro Kanayama ,  Masahiko Morita ,  Saiji Matsuoka ,  Nobuki Tanaka ,  Osamu Furukimi ,  Takaaki Hira

发明人： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Taro Kanayama ,  Masahiko Morita ,  Saiji Matsuoka ,  Nobuki Tanaka ,  Osamu Furukimi ,  Takaaki Hira

IPC分类号： C21D908

CPC分类号： C21D8/10 ,  C21D2201/00

摘要： A steel pipe containing fine ferrite crystal grains, which has excellent toughness and ductility and good ductility-strength balance as well as superior collision impact resistance, and a method for producing the same are provided. A steel pipe containing super-fine crystal grains can be produced by heating a base steel pipe having ferrite grains with an average crystal diameter of di (&mgr;m), in which C, Si, Mn and Al are limited within proper ranges, and if necessary, Cu, Ni, Cr and Mo, or Nb, Ti, V, B, etc. are further added, at not higher than the Ac3 transformation point, and applying reducing at an average rolling temperature of &thgr;m (°C.) and a total reduction ration Tred (%) within s temperature range of from 400 to Ac3 transformation point, with di, &thgr;m and Tred being in a relation satisfying a prescribed equation.

摘要翻译： 提供了具有优异的韧性和延展性以及良好的延展性 - 强度平衡以及优异的抗冲击冲击性的细铁素体晶粒的钢管及其制造方法。 含有超细晶粒的钢管可以通过加热具有平均晶体直径为二（母）的铁素体晶粒的基础钢管，其中C，Si，Mn和Al被限制在适当的范围内，如果需要 进一步添加Cu，Ni，Cr和Mo，或Nb，Ti，V，B等，不高于Ac 3相变点，并以平均轧制温度（℃）和 总还原率Tred（％）在400至Ac3相变点的s温度范围内，di，tt和tred处于满足规定方程的关系。

公开(公告)号：US06216511B1

公开(公告)日：2001-04-17

申请号：US09049193

申请日：1998-03-27

申请人： Toshio Ohnishi ,  Masahiro Kagawa ,  Yoshnori Sugie ,  Koji Sugano ,  Nobuki Tanaka ,  Kingo Sawada ,  Masao Shoji ,  Takaaki Toyooka ,  Yuji Hashimoto ,  Motoaki Itadani ,  Akira Yorifuji ,  Masanori Nishimori

发明人： Toshio Ohnishi ,  Masahiro Kagawa ,  Yoshnori Sugie ,  Koji Sugano ,  Nobuki Tanaka ,  Kingo Sawada ,  Masao Shoji ,  Takaaki Toyooka ,  Yuji Hashimoto ,  Motoaki Itadani ,  Akira Yorifuji ,  Masanori Nishimori

IPC分类号： B21D5128

CPC分类号： B21C37/0811

摘要： A method and apparatus for smoothing a thick walled portion of a steel pipe produced by pressure-welding two opposite longitudinal edges of an open pipe with a squeeze roll after being subjected to induction heating. Outer and inner reduction rollers pressure sandwiches the thick walled portion from the outer and inner surfaces of the pipe, a support supports the inner reduction roller to be rotatable and containing a water passage for cooling water, a connecting rod connects the support device to a coupler and contains a further water passage for feeding cooling water to the water passage, and an anchor holds the connecting rod. In the a method of producing steel pipes two opposite longitudinal edges of the open pipe are preformed before being subjected to the induction heating and thereafter a thick walled portion is smoothed by the above-described apparatus.

摘要翻译： 在进行感应加热之后，通过挤压辊对开口管的两个相对的纵向边缘进行压焊而制造的钢管的厚壁部分的平滑方法和装置。 外压缩辊和内减压辊压力从管的外表面和内表面夹住厚壁部分，支撑件支撑内部还原辊以可旋转并且容纳用于冷却水的水通道，连杆将支撑装置连接到联接器 并且包含用于将冷却水供给到水通道的另外的水通道，并且锚固住连接杆。 在制造钢管的方法中，开口管的两个相对的纵向边缘在进行感应加热之前预先形成，然后通过上述装置使厚壁部分平滑。