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1. 发明授权

US06949728B2 Impeder for manufacturing welded pipe 失效
标题翻译：用于制造焊管的阻焊器
公开(公告)号：US06949728B2
公开(公告)日：2005-09-27
申请号：US10476800
申请日：2001-08-02
申请人： Takaaki Toyooka , Takatoshi Okabe , Motoaki Itadani , Masatoshi Aratani , Osamu Kondo
发明人： Takaaki Toyooka , Takatoshi Okabe , Motoaki Itadani , Masatoshi Aratani , Osamu Kondo
IPC分类号： B23K13/08 , B23K13/02 , B23K31/02 , H05B6/10 , B23K13/01 , B21D39/00
CPC分类号： B23K13/025 , B23K31/02 , B23K2101/06
摘要： An impeder, for manufacturing a welded pipe, including an insulating case 4 containing laminations 10 having coated steel sheets 8 formed by providing an insulating coating on untreated steel sheets having a thickness of 0.3 mm or less and an insulating case 8 containing the laminations, wherein the steel sheets contain 1.5-20% of Cr, 2.5-10% of Si, and 100 ppm or less of C and N in total, or further contain one or more of Al, Mn, and P, where the content of Al is 5% or less and the content of each of Mn and P is 1% or less, the remainder being Fe and unavoidable impurities; and preferably have a resistivity of 60 μΩ·cm or more.
摘要翻译：一种用于制造焊接管的阻碍物，包括：绝缘壳体4，其包含通过在厚度为0.3mm以下的未处理钢板上提供绝缘涂层而形成的具有镀覆钢板8的叠片10和包含所述叠片的绝缘壳体8，钢板含有1.5-20％的Cr，2.5-10％的Si和100ppm或更少的C和N，或者还包含Al，Mn和P中的一种或多种，Al的含量为 5％以下，Mn和P的含量为1％以下，余量为Fe和不可避免的杂质; 并且优选具有60μΩa.cm以上的电阻率。

2. 发明授权

US06736910B2 High carbon steel pipe excellent in cold formability and high frequency hardenability and method for producing the same 失效
标题翻译：冷成型性优异，高频淬透性优良的高碳钢管及其制造方法
公开(公告)号：US06736910B2
公开(公告)日：2004-05-18
申请号：US10048322
申请日：2002-01-29
申请人： Takaaki Toyooka , Yoshikazu Kawabata , Akira Yorifuji , Masanori Nishimori , Motoaki Itadani , Takatoshi Okabe , Masatoshi Aratani , Yasue Koyama
发明人： Takaaki Toyooka , Yoshikazu Kawabata , Akira Yorifuji , Masanori Nishimori , Motoaki Itadani , Takatoshi Okabe , Masatoshi Aratani , Yasue Koyama
IPC分类号： C22C3802
CPC分类号： B21C37/30 , B21B17/14 , B21C37/06 , B21C37/08 , B21C37/16 , C21D8/10 , C22C38/002 , C22C38/02 , C22C38/04 , Y10S148/909
摘要： The invention provides a high-carbon steel pipe having superior cold workability and induction hardenability, and a method of producing the steel pipe. The method comprises the steps of heating or soaking a base steel pipe having a composition containing C: 0.3 to 0.8%, Si: not more than 2%, and Mn: not more than 3%, and then carrying out reducing rolling on the base steel pipe at least in the temperature range of (Ac1, transformation point −50° C.) to Ac1, transformation point with an accumulated reduction in diameter of not less than 30%. A structure in which the grain size of cementite is not greater than 1.0 &mgr;m is obtained, thus resulting in improved cold workability and induction hardenability.
摘要翻译：本发明提供一种具有优异的冷加工性和感应淬透性的高碳钢管，以及钢管的制造方法。该方法包括以下步骤：加热或浸泡含有C：0.3〜0.8％，Si：2％以下，Mn：3％以下的组成的基础钢管，然后在基材上进行还原轧制钢管至少在（Ac1，相变点-50℃）至Ac1的温度范围内，相变点的直径累积减小不小于30％。获得了渗碳体的粒径不大于1.0μm的结构，从而提高了冷加工性和感应淬透性。

3. 发明授权

US07591914B2 High-workability steel pipe and method of producing same 有权
标题翻译：高加工性钢管及其制造方法
公开(公告)号：US07591914B2
公开(公告)日：2009-09-22
申请号：US10258982
申请日：2001-06-14
申请人： Takaaki Toyooka , Yoshikazu Kawabata , Akira Yorifuji , Masanori Nishimori , Motoaki Itadani , Takatoshi Okabe , Masatoshi Aratani
发明人： Takaaki Toyooka , Yoshikazu Kawabata , Akira Yorifuji , Masanori Nishimori , Motoaki Itadani , Takatoshi Okabe , Masatoshi Aratani
IPC分类号： C21D9/08 , C22C38/00
CPC分类号： B21C37/08 , B21B17/14 , B21C37/06 , C21D8/10 , C21D9/08 , C22C38/02 , C22C38/04 , C22C38/06
摘要： A steel pipe is produced by a method including performing diameter-reducing rolling on a steel pipe in a temperature range of from 600° C. to Ac3 with a reduction in diameter of not less than 30%, preferably after heating the steel pipe to temperatures of not lower than Ac1, the steel pipe being produced by seam-welding strip steel, or a method further including the step of performing heat treatment of holding the rolled steel pipe in a temperature range of from 600° C. to 900° C. for a time of 1 second or longer during cooling subsequent to the diameter-reducing rolling or by reheating the rolled steel pipe after the cooling.
摘要翻译：钢管通过以下方法制造，该方法包括在600℃至300℃的温度范围内对钢管进行直径减小轧制，直径减小至少30％，优选在将钢管加热至温度不低于Ac1的钢管，通过缝焊带钢生产的钢管，或者还包括在600℃〜900℃的温度范围内进行热轧处理的方法。在直径减小轧制之后的冷却期间或通过在冷却之后再加热轧制钢管，持续1秒或更长时间。

4. 发明授权

US06755919B2 Stainless steel tube for automobile structure 失效
标题翻译：汽车结构用不锈钢管
公开(公告)号：US06755919B2
公开(公告)日：2004-06-29
申请号：US10089035
申请日：2002-03-26
申请人： Takaaki Toyooka , Akira Yorifuji , Makoto Kitazawa , Yoshikazu Kawabata , Motoaki Itadani , Masatoshi Aratani , Takatoshi Okabe
发明人： Takaaki Toyooka , Akira Yorifuji , Makoto Kitazawa , Yoshikazu Kawabata , Motoaki Itadani , Masatoshi Aratani , Takatoshi Okabe
IPC分类号： C22C3818
CPC分类号： C21D8/10 , C21D8/105 , C21D2211/005 , C21D2211/008 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/18
摘要： A stainless steel tube having excellent formability for secondary operation comprises: a chemical composition including not more than 0.20 mass % of C; not more than 1.5 mass % of Si; not more than 2.0 mass % of Mn; 10-18 mass % of Cr; not more than 0.03 mass % of N; or further at least one type of element selected from the group of: not more than 0.6 mass % of Cu; not more than 0.6 mass % of Ni; not more than 2.5 mass % of Mo; not more than 1.0 mass % of Nb; not more than 1.0 mass % of Ti; and not more than 1.0 mass % of V; Fe as the remainder and the inevitable impurities; and a structure constituted of ferrite or ferrite and martensite, wherein the TE value defined by the following formula exceeds 25,000 Mpa·%, TE=TS×(El+21.9) TS represents the tensile strength in the tube axial direction, and El represents the elongation in such direction.
摘要翻译：对于二次操作具有优异成形性的不锈钢管包括：不超过0.20质量％的C的化学组成; 不超过1.5质量％的Si; 不大于2.0质量％的Mn; 10-18质量％Cr; 不大于0.03质量％的N; 或另外至少一种选自以下的元素中的至少一种：不大于0.6质量％的Cu; 不大于0.6质量％的Ni; 不大于2.5质量％的Mo; 不大于1.0质量％的Nb; 不大于1.0质量％的Ti; 不大于1.0质量％的V; Fe作为剩余部分和不可避免的杂质; 以及由铁素体或铁素体和马氏体组成的结构，其中由下式定义的TE值超过25,000Mpa％，TE = TSx（E1 + 21.9）TS表示管轴向的拉伸强度，E1表示伸长率在这个方向。

5. 发明授权

US07018488B2 Steel pipe for use in reinforcement of automobile and method for production thereof 失效
标题翻译：用于汽车加固的钢管及其制造方法
公开(公告)号：US07018488B2
公开(公告)日：2006-03-28
申请号：US10049510
申请日：2001-06-14
申请人： Takaaki Toyooka , Masanori Nishimori , Yoshikazu Kawabata , Akira Yorifuji , Motoaki Itadani , Takatoshi Okabe , Masatoshi Aratani
发明人： Takaaki Toyooka , Masanori Nishimori , Yoshikazu Kawabata , Akira Yorifuji , Motoaki Itadani , Takatoshi Okabe , Masatoshi Aratani
IPC分类号： C22C38/02 , C22C38/06 , C21D8/06
CPC分类号： C22C38/38 , C21D8/10 , C21D8/105 , C21D2211/002 , C21D2211/008 , C22C38/002 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14
摘要： A steel tube having a composition which contains: 0.05 to 0.30% of C; 1.8 to 4.0% of Mn; Si; and Al is subjected to a diameter-reducing rolling process in which the total diameter-reduction rate is no less than 20% and the temperature at which the diameter-reducing rolling process is finished is no higher than 800° C., whereby a structure constituted of martensite and/or bainite or further of ferrite is obtained as a transformation product from the deformed γ. As a result, a steel tube having tensile strength of 1000 MPa or more and excellent three-point-bending property can be obtained. The composition of the steel tube of the present invention may further include at least one type of element selected from the group consisting of Cu, Ni, Cr and Mo, or at least one type of element selected from the group consisting of Nb, V, Ti and B, or at least of one type selected from the group consisting of REM and Ca.
摘要翻译：一种钢管，其组成为：0.05〜0.30％的C; 1.8〜4.0％的Mn; 硅; 对Al进行直径缩径率为20％以上，直径缩径轧制加工结束温度为800℃以下的直径缩径轧制加工，由马氏体和/或贝氏体构成的铁素体或其它铁素体由变形的γ得到。结果，可以得到拉伸强度为1000MPa以上且具有优异的三点弯曲性的钢管。本发明的钢管的组成还可以包括选自由Cu，Ni，Cr和Mo组成的组中的至少一种元素，或者选自Nb，V， Ti和B，或至少一种选自REM和Ca.

6. 发明授权

US06290789B1 Ultrafine-grain steel pipe and process for manufacturing the same 有权
标题翻译：超细晶粒钢管及其制造方法
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。

7. 发明授权

US06331216B1 Steel pipe having high ductility and high strength and process for production thereof 有权
标题翻译：具有高延展性和高强度的钢管及其生产方法
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。

8. 发明授权

US06216520B1 Rolling mill 失效
标题翻译：轧机
公开(公告)号：US06216520B1
公开(公告)日：2001-04-17
申请号：US09376320
申请日：1999-08-18
申请人： Shigeharu Ochi , Hiroshi Fujiwara , Sho Inui , Takaaki Toyooka , Motoaki Itadani , Akira Yorifuji , Toshio Onishi , Koji Sugano , Mikio Kodaka , Nobuki Tanaka
发明人： Shigeharu Ochi , Hiroshi Fujiwara , Sho Inui , Takaaki Toyooka , Motoaki Itadani , Akira Yorifuji , Toshio Onishi , Koji Sugano , Mikio Kodaka , Nobuki Tanaka
IPC分类号： B21B3107
CPC分类号： B21B13/103
摘要： A rolling mill comprising a roll unit and a drive unit for driving the roll unit. The drive unit comprises an outer housing, a pair of large-diameter ring-like driving bevel gears disposed concentric with the pass line, an input shaft mechanism for rotating the driving bevel gears, and transmission mechanisms for transmitting the torque of the driving bevel bears to the rolls. Each transmission mechanism comprises a small-diameter transmission bevel gear caught between and engaging with the driving bevel gears and first and second transmission shafts for transmitting the torque of the transmission bevel gear to a roll. The drive and roll units are coupled and uncoupled by couplings. Four positioning parts are formed on the outer periphery of the inner housing of the roll unit. The outer housing of the drive unit is generally in the shape of a ring, and four positioning parts are formed on the inner periphery of the outer housing. When the inner housing is fitted into the outer housing, the inner housing is positioned in the outer housing by the positioning parts laterally and longitudinally and also in both directions of the pass line by stoppers and hold-downs.
摘要翻译：一种轧机，包括辊单元和用于驱动辊单元的驱动单元。驱动单元包括外壳，与通行线同心设置的一对大直径环形驱动锥齿轮，用于使主动锥齿轮旋转的输入轴机构和用于传递驱动斜面轴的扭矩的传动机构到卷每个传动机构包括一个夹在两个主动锥齿轮之间并与之啮合的小直径传动伞齿轮，以及用于将传动锥齿轮转矩传递到一个辊的第一和第二传动轴。驱动和滚动单元通过联接器联接和分离。四个定位部分形成在辊单元的内壳体的外周上。驱动单元的外壳通常为环形，并且在外壳的内周上形成有四个定位部。当内壳体装配到外壳体中时，内壳体通过定位部件通过止动件和压紧件横向和纵向以及通过线的两个方向定位在外壳体中。

9. 发明授权

US06216511B1 Apparatus and method for smoothing a welded seam of steel pipe 失效
标题翻译：钢管焊缝平整装置及方法
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。

10. 发明授权

US6041632A Pipe forming roll apparatus and method 失效
标题翻译：管成型辊装置及方法
公开(公告)号：US6041632A
公开(公告)日：2000-03-28
申请号：US149576
申请日：1998-09-08
申请人： Koji Sugano , Masahiro Kagawa , Toshio Ohnishi , Kingo Sawada , Yoshinori Sugie , Nobuki Tanaka , Takaaki Toyooka , Motoaki Itadani , Yuji Hashimoto , Ryoji Kusakabe , Kazuo Omura
发明人： Koji Sugano , Masahiro Kagawa , Toshio Ohnishi , Kingo Sawada , Yoshinori Sugie , Nobuki Tanaka , Takaaki Toyooka , Motoaki Itadani , Yuji Hashimoto , Ryoji Kusakabe , Kazuo Omura
IPC分类号： B22D17/20 , B21B13/02 , B21B27/02 , B21B27/08 , B21B31/04 , B21B37/60 , B21C37/08 , B21C37/083 , B22C5/00 , B22C5/04 , B22C5/08 , B22D29/00 , B22D31/00 , C21D1/53 , B21D5/14
CPC分类号： B21B37/60 , B21B27/028 , B21C37/08 , B21C37/083 , B22C5/085 , B22D29/003 , B22D31/002 , C21D1/53 , B21B13/02 , B21B2027/083 , B21B31/04
摘要： A forming stand for continuously forming a skelp material into a pipe, by pressure of spaced-apart forming rolls supported by spaced upper and lower shafts, the forming rolls having two portions, with one portion fixedly fitted on one side of its shaft, a sleeve slidably fitted to the other end of the shaft and fixedly secured to the sleeve and slidable with respect to the shaft; a bearing box for supporting one side of the associated shaft; a bearing box supporting the other side of the associated shaft through the sleeve; upper and lower stand supporting frames for supporting both of the bearing boxes to be movable in an axial direction; and supporting columns for supporting the stand supporting frames; the pipe-forming force is continuously measured and the forming operation is adjusted such that the measured value of pipe-forming force does not exceed a predetermined pipe-forming upper limit.
摘要翻译：一种用于通过由间隔开的上下轴支撑的间隔成形辊的压力连续地形成骨架材料到成形管的成形台，成形辊具有两部分，其一部分固定地安装在其轴的一侧上，套筒可滑动地装配到轴的另一端并且固定地固定到套筒并相对于轴可滑动; 用于支撑相关轴的一侧的轴承箱; 轴承箱，其通过套筒支撑相关轴的另一侧; 上下支架支撑框架，用于支撑两个轴承箱以在轴向方向上可移动; 支撑架支撑支架; 连续地测量成形力，并且调整成形操作使得成形力的测量值不超过预定的管道形成上限。

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