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1.发明授权公开(公告)号：US07765850B2
公开(公告)日：2010-08-03
申请号：US12230892
申请日：2008-09-08
申请人： Tsutomu Arita , Masayoshi Akiyama , Kouichi Kuroda , Tatsuya Okui
发明人： Tsutomu Arita , Masayoshi Akiyama , Kouichi Kuroda , Tatsuya Okui
摘要： The present invention provides a mechanical pipe-end expander comprising a cone and a die having tapered wedge bodies whose outer radius is larger towards a flangeless end direction from a flange end, wherein a pipe-end zone is expanded by a wedge effect of the die, which results from a procedure that the cone and the die are inserted together into the pipe-end zone to be expanded, and that then only the cone is axially drawn outwards leaving the die within the pipe-end zone. A seamless steel pipe with an expanded pipe-end zone is manufactured by applying a mechanical pipe-end expander comprising a die having tapered wedge bodies whose outer radius is larger towards a flangeless end direction from a flange end. The resulting seamless steel pipe has satisfactory pipe-end dimensional accuracy, and exhibits characteristics with excellent field welding workability.
摘要翻译： 本发明提供了一种机械管端膨胀机，其包括具有锥形和锥形的模具，所述锥体和模具具有锥形楔形体，其外径比法兰端的无法兰端方向更大，其中管端区域通过模具的楔形效应而膨胀 这是由锥体和模具一起插入到管端区域中以扩展的程序产生的，然后只有锥体被轴向地向外拉出，使得模具在管端区域内。 具有扩展的管端区域的无缝钢管通过应用机械管端膨胀机制造，所述机械管端膨胀机包括具有锥形楔形体的模具，所述模具的外径从凸缘端朝向无凸缘端方向较大。 所得到的无缝钢管具有令人满意的管端尺寸精度，并具有优异的现场焊接加工性能。
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2.发明申请公开(公告)号：US20090038366A1
公开(公告)日：2009-02-12
申请号：US12230892
申请日：2008-09-08
申请人： Tsutomu Arita , Masayoshi Akiyama , Kouichi Kuroda , Tatsuya Okui
发明人： Tsutomu Arita , Masayoshi Akiyama , Kouichi Kuroda , Tatsuya Okui
IPC分类号： B21D39/20
摘要： The present invention provides a mechanical pipe-end expander comprising a cone and a die having tapered wedge bodies whose outer radius is larger towards a flangeless end direction from a flange end, wherein a pipe-end zone is expanded by a wedge effect of the die, which results from a procedure that the cone and the die are inserted together into the pipe-end zone to be expanded, and that then only the cone is axially drawn outwards leaving the die within the pipe-end zone. A seamless steel pipe with an expanded pipe-end zone is manufactured by applying a mechanical pipe-end expander comprising a die having tapered wedge bodies whose outer radius is larger towards a flangeless end direction from a flange end. The resulting seamless steel pipe has satisfactory pipe-end dimensional accuracy, and exhibits characteristics with excellent field welding workability.
摘要翻译： 本发明提供了一种机械管端膨胀机，其包括具有锥形和锥形的模具，所述锥体和模具具有锥形楔形体，其外径比法兰端的无法兰端方向更大，其中管端区域通过模具的楔形效应而膨胀 这是由锥体和模具一起插入到管端区域中以扩展的程序产生的，然后只有锥体被轴向地向外拉出，使得模具在管端区域内。 具有扩展的管端区域的无缝钢管通过应用机械管端膨胀机来制造，所述机械管端膨胀机包括具有锥形楔形体的模具，所述模具的外径从凸缘端朝向无凸缘端方向较大。 所得到的无缝钢管具有令人满意的管端尺寸精度，并具有优异的现场焊接加工性能。
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公开(公告)号：US20090038367A1
公开(公告)日：2009-02-12
申请号：US12232925
申请日：2008-09-26
申请人： Tatsuya Okui , Kouichi Kuroda , Masayoshi Akiyama
发明人： Tatsuya Okui , Kouichi Kuroda , Masayoshi Akiyama
IPC分类号： B21D41/02
CPC分类号： B21D39/20 , B21D3/14 , B21D41/026
摘要： An apparatus for sizing a pipe end comprising: a plug 3 for sizing the pipe end; a chuck 2 for clamping the pipe; and shifting means for shifting the position of the plug 3 and/the chuck 2, which are placed successively from the end of the pipe 2, and the plug 3 has a circular cross section, and is constituted by a taper portion 31 and a diameter equivalent portion 32 continuously formed from the tip of the plug in succession. The outer diameter of the taper portion 31 is gradually expanding from the tip toward the rear end while satisfying the following formulas (1) and (2). The chuck 2 is capable of changing clamping position of the pipe 1. This apparatus makes it possible to size the inner diameter of a pipe end with superior dimensional precision. 22≦LR/(D1×0.01/2)≦115 (1) R2≧R1 (2)
摘要翻译： 一种用于使管端尺寸调整的装置，包括：用于使管端尺寸调整的塞子3; 用于夹紧管的卡盘2; 以及用于移动从管2的端部依次放置的塞子3和卡盘2的位置的移动装置，并且塞子3具有圆形横截面，并且由锥形部分31和直径 从塞子的前端连续形成的等效部分32。 锥形部31的外径从顶端朝向后端逐渐扩大，同时满足下述式（1）和（2）。 卡盘2能够改变管1的夹紧位置。该装置使得可以以优异的尺寸精度对管端的内径进行尺寸化。 <？in-line-formula description =“In-line Formulas”end =“lead”？> 22 <= LR /（D1x0.01 / 2）<= 115（1）<？in-line-formula description = 在线公式“end =”tail“？> <？in-line-formula description =”In-line Formulas“end =”lead“？> R2> = R1（2）<？in-line-formula description = “直线公式”end =“tail”？>
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公开(公告)号：US07788957B2
公开(公告)日：2010-09-07
申请号：US12232925
申请日：2008-09-26
申请人： Tatsuya Okui , Kouichi Kuroda , Masayoshi Akiyama
发明人： Tatsuya Okui , Kouichi Kuroda , Masayoshi Akiyama
CPC分类号： B21D39/20 , B21D3/14 , B21D41/026
摘要： An apparatus for sizing a pipe end comprising: a plug 3 for sizing the pipe end; a chuck 2 for clamping the pipe; and shifting means for shifting the position of the plug 3 and/the chuck 2, which are placed successively from the end of the pipe 2, and the plug 3 has a circular cross section, and is constituted by a taper portion 31 and a diameter equivalent portion 32 continuously formed from the tip of the plug in succession. The outer diameter of the taper portion 31 is gradually expanding from the tip toward the rear end while satisfying the following formulas (1) and (2). The chuck 2 is capable of changing clamping position of the pipe 1. This apparatus makes it possible to size the inner diameter of a pipe end with superior dimensional precision 22≦LR/(D1×0.01/2)≦115 (1) R2≧R1 (2).
摘要翻译： 一种用于使管端尺寸调整的装置，包括：用于使管端尺寸调整的塞子3; 用于夹紧管的卡盘2; 以及用于移动从管2的端部依次放置的塞子3和卡盘2的位置的移动装置，并且塞子3具有圆形横截面，并且由锥形部分31和直径 从塞子的前端连续形成的等效部分32。 锥形部31的外径从顶端朝向后端逐渐扩大，同时满足下述式（1）和（2）。 卡盘2能够改变管1的夹紧位置。该装置使得可以以优异的尺寸精度22和nlE; LR /（D1×0.01 / 2）＆nlE; 115（1）R2来缩小管端的内径 ≧R1（2）。
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5.发明申请公开(公告)号：US20130205861A1
公开(公告)日：2013-08-15
申请号：US13878275
申请日：2011-10-17
IPC分类号： B21C1/22
CPC分类号： B21C1/22 , B21C37/154 , F28F1/003
摘要： Provided is a method for producing a double-wall tube with braided wires at its interface in which the braided wires are interposed between an outer-wall and inner-wall blank tubes and then a drawing process is applied so as for the braided wires to be brought into close contact with the inner surface of the outer-wall tube and the outer surface of the inner-wall tube, the method comprising: polishing the inner surface of the outer-wall blank tube and the outer surface of the inner-wall blank tube so that a surface roughness thereof satisfies Ra
摘要翻译： 提供一种在其界面处制造具有编织线的双壁管的方法，其中编织线插入在外壁和内壁空白管之间，然后进行拉丝处理以使编织线为 与外壁管的内表面和内壁管的外表面紧密接触，该方法包括：抛光外壁空白管的内表面和内壁空白的外表面 使其表面粗糙度满足Ra <1.0μm，然后将编织线插入外壁和内壁空白管之间; 进行下沉拉伸处理，使得所得双壁管的外径相对于模孔直径的差异为0.1mm至0.3mm; 并进行热处理。 所生产的双壁管适合用作传热管。
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公开(公告)号：US08074482B2
公开(公告)日：2011-12-13
申请号：US12691503
申请日：2010-01-21
申请人： Tatsuya Okui , Kouichi Kuroda , Tadashi Kawakami
发明人： Tatsuya Okui , Kouichi Kuroda , Tadashi Kawakami
IPC分类号： B21C1/24
摘要： A plug 1 includes a first columnar portion 20, a tapered portion 30, and a second columnar portion 40. The first columnar portion 20 has an outside diameter D1. The second columnar portion 40 has an outside diameter D2 which is larger than the outside diameter D1. The tapered portion 30 is formed between the first columnar portion 20 and the second columnar portion 40. The tapered portion 30 has a tapered surface 31 provided with an outside diameter which is gradually increased from the first columnar portion 20 to the second columnar portion 40, and an axial direction length L. The outside diameters D1 and D2, and the axial direction length L meet the following expressions (1) to (4): 0.25≦ρ≦2.00 (1), 0.06≦L/D2≦0.8 (2), L/D2≦0.3×ρ+0.575 (3), and L/D2≧0.1×ρ (4) where ρ=(D2−D1)/D1×100. Therefore, the cold drawing plug according to the present invention can reduce the tensile residual stress on the outer surface of a metal pipe after the cold drawing.
摘要翻译： 插头1包括第一柱状部分20，锥形部分30和第二柱状部分40.第一柱状部分20具有外径D1。 第二柱状部分40具有比外径D1大的外径D2。 锥形部分30形成在第一柱状部分20和第二柱状部分40之间。锥形部分30具有锥形表面31，其具有从第一柱状部分20逐渐增加到第二柱状部分40的外径， 外径D1和D2以及轴向长度L满足以下公式（1）〜（4）：0.25＆nlE;＆rgr;＆nlE; 2.00（1），0.06＆nlE; L / D2＆nlE ; 0.8（2），L / D2＆nlE; 0.3×＆rgr; +0.575（3），L /D2≥0.1×＆rgr; （4）其中＆rgr = =（D2-D1）/ D1×100。 因此，根据本发明的冷拔塞可以减少冷拔后的金属管的外表面的拉伸残余应力。
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公开(公告)号：US20100170316A1
公开(公告)日：2010-07-08
申请号：US12691503
申请日：2010-01-21
申请人： Tatsuya Okui , Kouichi Kuroda , Tadashi Kawakami
发明人： Tatsuya Okui , Kouichi Kuroda , Tadashi Kawakami
IPC分类号： B21C1/24
摘要： A plug 1 includes a first columnar portion 20, a tapered portion 30, and a second columnar portion 40. The first columnar portion 20 has an outside diameter D1. The second columnar portion 40 has an outside diameter D2 which is larger than the outside diameter D1. The tapered portion 30 is formed between the first columnar portion 20 and the second columnar portion 40. The tapered portion 30 has a tapered surface 31 provided with an outside diameter which is gradually increased from the first columnar portion 20 to the second columnar portion 40, and an axial direction length L. The outside diameters D1 and D2, and the axial direction length L meet the following expressions (1) to (4): 0.25≦ρ≦2.00 (1), 0.06≦L/D2≦0.8 (2), L/D2≦0.3×ρ+0.575 (3), and L/D2≧0.1×ρ (4) where ρ=(D2−D1)/D1×100. Therefore, the cold drawing plug according to the present invention can reduce the tensile residual stress on the outer surface of a metal pipe after the cold drawing.
摘要翻译： 插头1包括第一柱状部分20，锥形部分30和第二柱状部分40.第一柱状部分20具有外径D1。 第二柱状部分40具有比外径D1大的外径D2。 锥形部分30形成在第一柱状部分20和第二柱状部分40之间。锥形部分30具有锥形表面31，其具有从第一柱状部分20逐渐增加到第二柱状部分40的外径， 外径D1和D2以及轴向长度L满足以下公式（1）〜（4）：0.25＆nlE;＆rgr;＆nlE; 2.00（1），0.06＆nlE; L / D2＆nlE ; 0.8（2），L / D2＆nlE; 0.3×＆rgr; +0.575（3），L /D2≥0.1×＆rgr; （4）其中＆rgr = =（D2-D1）/ D1×100。 因此，根据本发明的冷拔塞可以减少冷拔后的金属管的外表面的拉伸残余应力。
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8.发明授权公开(公告)号：US09238258B2
公开(公告)日：2016-01-19
申请号：US13878275
申请日：2011-10-17
CPC分类号： B21C1/22 , B21C37/154 , F28F1/003
摘要： Provided is a method for producing a double-wall tube with braided wires at its interface in which the braided wires are interposed between an outer-wall and inner-wall blank tubes and then a drawing process is applied so as for the braided wires to be brought into close contact with the inner surface of the outer-wall tube and the outer surface of the inner-wall tube, the method comprising: polishing the inner surface of the outer-wall blank tube and the outer surface of the inner-wall blank tube so that a surface roughness thereof satisfies Ra
摘要翻译： 提供一种在其界面处制造具有编织线的双壁管的方法，其中编织线插入在外壁和内壁空白管之间，然后进行拉丝处理以使编织线为 与外壁管的内表面和内壁管的外表面紧密接触，该方法包括：抛光外壁空白管的内表面和内壁空白的外表面 使其表面粗糙度满足Ra <1.0μm，然后将编织线插入外壁和内壁空白管之间; 进行下沉拉伸处理，使得所得双壁管的外径相对于模孔直径的差异为0.1mm至0.3mm; 并进行热处理。 所生产的双壁管适合用作传热管。
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9.发明申请公开(公告)号：US20050266927A1
公开(公告)日：2005-12-01
申请号：US11191909
申请日：2005-07-29
申请人： Kouichi Kuroda , Tatsuya Okui , Keisuke Hitoshio
发明人： Kouichi Kuroda , Tatsuya Okui , Keisuke Hitoshio
摘要： A steel tube hot-finished by the Mannesmann tube-making method is subjected to a simple grinding process for the inner surface, and thereafter to a cold drawing, so that the depth d of the concave portion in the concavo-convex profile forming the inner surface of the steel tube, the surface roughness Ra and the width w of the entrance in the concave portion are specified, or similarly the depth d of the concave portion in the concavo-convex profile, the Vickers hardness Hv of the inner surface layer and the width w of the entrance in the concave portion are specified, hollow parts for a drive shaft, which have an excellent fatigue strength and which is optimal to reduce the weight of a car body, can be produced. Accordingly, the application of the manufacturing method according to the present invention allows drive shafts for automobiles to be efficiently produced in a reduced manufacturing cost, thereby providing a significant advantage in the industry.
摘要翻译： 通过曼内斯曼管制造方法热轧的钢管对内表面进行简单的研磨处理，然后进行冷拉伸，使得凹凸轮廓中的凹部的深度d形成内部 规定了钢管的表面，凹部的入口的表面粗糙度Ra和宽度w，或类似地，凹凸型的凹部的深度d，内表面层的维氏硬度Hv， 规定了凹部的入口宽度w，可以制造具有优异的疲劳强度并且最适于减轻车体重量的用于驱动轴的中空部件。 因此，根据本发明的制造方法的应用允许以降低的制造成本有效地生产用于汽车的驱动轴，从而在工业中提供显着的优点。
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公开(公告)号：US20090023506A1
公开(公告)日：2009-01-22
申请号：US11903940
申请日：2007-09-25
申请人： Kunio Kondo , Kouichi Kuroda
发明人： Kunio Kondo , Kouichi Kuroda
CPC分类号： C21D9/08 , C21D1/10 , C21D1/18 , C21D1/42 , C21D9/28 , F16C3/02 , F16C2204/62 , F16C2326/06 , Y02P10/253
摘要： The present invention provides an induction-hardened hollow driving shaft that comprises, as a raw material, a steel pipe that contains, by mass %, 0.30 to 0.47% C, 0.5% or less Si, 0.3 to 2.0% Mn, 0.018% or less P, 0.015% or less S, 0.15 to 1.0% Cr, 0.001 to 0.05% Al, 0.005 to 0.05% Ti, 0.004% or less Ca, 0.01% or less N, 0.0005 to 0.005% B and 0.0050% or less O (oxygen) and the balance Fe and impurities and of which Beff defined by an equation (a) or (b) below is 0.0001 or more, wherein a prior austenite grain size number (JIS G0551) after the hardening is 9 or more. Here, in the case of Neff=N−14×Ti/47.9≧0, Beff=B×10.8×(N−14×Ti/47.9)/14 . . . (a), and, in other cases, Beff=B . . . (b). According to the present invention, a hollow driving shaft that is simultaneously provided with excellent cold workability, hardenability, toughness and torsional fatigue strength and can exert stable fatigue lifetime can be obtained and can be widely utilized.
摘要翻译： 本发明提供一种感应淬火的中空驱动轴，其包括以质量％计含有0.30〜0.47％C，0.5％以下的Si，0.3〜2.0％Mn，0.018％或以下的钢管作为原料 较小的P，0.015％以下的S，0.15〜1.0％的Cr，0.001〜0.05％的Al，0.005〜0.05％的Ti，0.004％以下的Ca，0.01％以下的N，0.0005〜0.005％的B和0.0050％以下的O （氧），余量为Fe和杂质，其中由下式（a）或（b）定义的Beff为0.0001以上，硬化后的原奥氏体晶粒数（JIS G0551）为9以上。 这里，在Neff = N-14xTi / 47.9> = 0的情况下，Beff = B××××（N-14×Ti / 47.9）/ 14。 。 。 （a），而在其他情况下，Beff = B。 。 。 （b）。 根据本发明，可以获得同时具有优异的冷加工性，淬透性，韧性和扭转疲劳强度并且可以发挥稳定的疲劳寿命的中空驱动轴，并且可以被广泛使用。
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