公开(公告)号：US08549751B2

公开(公告)日：2013-10-08

申请号：US12561884

申请日：2009-09-17

申请人： Tsutomu Arita

发明人： Tsutomu Arita

IPC分类号： B21D41/02 ,  B21D7/03

CPC分类号： B21C37/06 ,  B21D9/00 ,  B21D9/18 ,  B23K31/022 ,  B23K2101/10 ,  Y10T29/49391 ,  Y10T29/49428

摘要： Provided are a seamless bent pipe constituted by a bent section and straight pipe sections on both ends of the bent section, with the inside diameter at each pipe end portion being larger than the inside diameter of the bent section, and a welded component comprising a seamless bent pipe and a seamless straight pipe at one or each end of the seamless bent pipe, with the end of the seamless straight pipe to be welded to one or each end of the seamless bent pipe having the same inside diameter as the inside diameter of the seamless bent pipe, as well as methods of manufacturing them. As a result, elements suited for use in pipelines can be obtained, without unnecessarily increasing the wall thickness of the seamless bent pipe and without internal machining of the pipe end portions of the seamless bent pipe after the manufacturing thereof.

摘要翻译： 提供一种由弯曲部分和弯曲部分两端的直管部分构成的无缝弯管，每个管端部的内径大于弯曲部分的内径，焊接部件包括无缝 弯曲管和无缝弯管的一端或两端的无缝直管，无缝直管的端部焊接到无缝弯管的一端或两端，内径与内径相同 无缝弯管，以及其制造方法。 结果，可以获得适用于管道的元件，而无需增加无缝弯管的壁厚，并且在其制造之后，无缝内弯曲管的管端部不进行内部加工。

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

IPC分类号： B21D41/02 ,  B21D39/20 ,  B21D39/08

CPC分类号： B21D41/02 ,  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。

公开(公告)号：US09364881B2

公开(公告)日：2016-06-14

申请号：US14021630

申请日：2013-09-09

申请人： Tsutomu Arita

发明人： Tsutomu Arita

IPC分类号： B21C37/06 ,  B21D9/00 ,  B21D9/18 ,  B23K31/02

CPC分类号： B21C37/06 ,  B21D9/00 ,  B21D9/18 ,  B23K31/022 ,  B23K2101/10 ,  Y10T29/49391 ,  Y10T29/49428

摘要： Provided are a seamless bent pipe constituted by a bent section and straight pipe sections on both ends of the bent section, with the inside diameter at each pipe end portion being larger than the inside diameter of the bent section, and a welded component comprising a seamless bent pipe and a seamless straight pipe at one or each end of the seamless bent pipe, with the end of the seamless straight pipe to be welded to one or each end of the seamless bent pipe having the same inside diameter as the inside diameter of the seamless bent pipe, as well as methods of manufacturing them. As a result, elements suited for use in pipelines can be obtained, without unnecessarily increasing the wall thickness of the seamless bent pipe and without internal machining of the pipe end portions of the seamless bent pipe after the manufacturing thereof.

摘要翻译： 提供一种由弯曲部分和弯曲部分两端的直管部分构成的无缝弯管，每个管端部的内径大于弯曲部分的内径，焊接部件包括无缝 弯曲管和无缝弯管的一端或两端的无缝直管，无缝直管的端部焊接到无缝弯管的一端或两端，内径与内径相同 无缝弯管，以及其制造方法。 结果，可以获得适用于管道的元件，而无需增加无缝弯管的壁厚，并且在其制造之后，无缝内弯曲管的管端部不进行内部加工。

公开(公告)号：US20140007641A1

公开(公告)日：2014-01-09

申请号：US14021630

申请日：2013-09-09

申请人： Tsutomu Arita

发明人： Tsutomu Arita

IPC分类号： B21C37/06

CPC分类号： B21C37/06 ,  B21D9/00 ,  B21D9/18 ,  B23K31/022 ,  B23K2101/10 ,  Y10T29/49391 ,  Y10T29/49428

摘要： Provided are a seamless bent pipe constituted by a bent section and straight pipe sections on both ends of the bent section, with the inside diameter at each pipe end portion being larger than the inside diameter of the bent section, and a welded component comprising a seamless bent pipe and a seamless straight pipe at one or each end of the seamless bent pipe, with the end of the seamless straight pipe to be welded to one or each end of the seamless bent pipe having the same inside diameter as the inside diameter of the seamless bent pipe, as well as methods of manufacturing them. As a result, elements suited for use in pipelines can be obtained, without unnecessarily increasing the wall thickness of the seamless bent pipe and without internal machining of the pipe end portions of the seamless bent pipe after the manufacturing thereof.

摘要翻译： 提供一种由弯曲部分和弯曲部分两端的直管部分构成的无缝弯管，每个管端部的内径大于弯曲部分的内径，焊接部件包括无缝 弯曲管和无缝弯管的一端或两端的无缝直管，无缝直管的端部焊接到无缝弯管的一端或两端，内径与内径相同 无缝弯管，以及其制造方法。 结果，可以获得适用于管道的元件，而无需增加无缝弯管的壁厚，并且在其制造之后，无缝内弯曲管的管端部不进行内部加工。

公开(公告)号：US20100132427A1

公开(公告)日：2010-06-03

申请号：US12701343

申请日：2010-02-05

申请人： Masayoshi Akiyama ,  Tsutomu Arita

发明人： Masayoshi Akiyama ,  Tsutomu Arita

IPC分类号： B21D37/16

CPC分类号： C10M105/24 ,  C10M173/02 ,  C10M2207/1253 ,  C10N2230/06 ,  C10N2240/403 ,  C10N2240/405 ,  C10N2250/121 ,  C10N2210/01

摘要： The present invention provides a lubricant comprising an alkali soap and a cold working method, in which the lubricant layer can be easily formed on the surface of a steel pipe prior to cold working the reduces the work load during cold working of the steel pipe, and whose layer can be easily removed by washing the surface of the steel pipe after cold working. After that, an alkali soap aqueous solution or aqueous pasty alkali soap is applied to the working surface of the steel pipe, cold working of the steel pipe is performed, and thereafter the alkali soap layer is removed by washing with water. The alkali soap aqueous solution or aqueous pasty alkali soap is preferably prepared within a vessel having an inner surface consisting of a non-metal material.

摘要翻译： 本发明提供一种含有碱皂和冷加工方法的润滑剂，其中可以在冷加工前在钢管的表面上容易地形成润滑剂层，从而降低钢管的冷加工时的工作负荷， 通过在冷加工后清洗钢管的表面，可以容易地除去其层。 之后，将碱性皂水溶液或糊状碱肥皂施加到钢管的工作面上，进行钢管的冷加工，然后用水洗涤除去碱性皂层。 碱肥皂水溶液或水性糊状碱肥皂优选在具有由非金属材料构成的内表面的容器内制备。

公开(公告)号：US20090090439A1

公开(公告)日：2009-04-09

申请号：US12270595

申请日：2008-11-13

申请人： MASAYOSHI AKIYAMA ,  Tsutomu Arita

发明人： MASAYOSHI AKIYAMA ,  Tsutomu Arita

IPC分类号： C21D7/02 ,  C07C53/126

CPC分类号： C10M105/24 ,  C10M173/02 ,  C10M2207/1253 ,  C10N2230/06 ,  C10N2240/403 ,  C10N2240/405 ,  C10N2250/121 ,  C10N2210/01

摘要： The present invention provides a lubricant comprising an alkali soap and a cold working method, in which the lubricant layer can be easily formed on the surface of a steel pipe prior to cold working the reduces the work load during cold working of the steel pipe, and whose layer can be easily removed by washing the surface of the steel pipe after cold working. After that, an alkali soap aqueous solution or aqueous pasty alkali soap is applied to the working surface of the steel pipe, cold working of the steel pipe is performed, and thereafter the alkali soap layer is removed by washing with water. The alkali soap aqueous solution or aqueous pasty alkali soap is preferably prepared within a vessel having an inner surface consisting of a non-metal material.

摘要翻译： 本发明提供一种含有碱皂和冷加工方法的润滑剂，其中可以在冷加工前在钢管的表面上容易地形成润滑剂层，从而降低钢管的冷加工时的工作负荷， 通过在冷加工后清洗钢管的表面，可以容易地除去其层。 之后，将碱性皂水溶液或糊状碱肥皂施加到钢管的工作面上，进行钢管的冷加工，然后用水洗涤除去碱性皂层。 碱肥皂水溶液或水性糊状碱肥皂优选在具有由非金属材料构成的内表面的容器内制备。

公开(公告)号：US20060219335A1

公开(公告)日：2006-10-05

申请号：US11393795

申请日：2006-03-31

申请人： Tsutomu Arita

发明人： Tsutomu Arita

IPC分类号： C22C38/14

CPC分类号： C22C38/04 ,  C21D1/18 ,  C21D1/185 ,  C21D1/25 ,  C21D6/005 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/02

摘要： A steel with excellent-strength and excellent-toughness comprises, by weight percent, C: 0.02 to less than 0.15%; Si: not greater than 1%; Mn: 0.3 to 2.5%; P: not greater than 0.05%; S: less than 0.004%; sol. Al: 0.001 to 0.1%; Ti: not greater than 0.02%; N: not greater than 0.009%; wherein, the metal structure of the steel contains either or both of martensite and bainite, or the tempered structure thereof; an aspect ratio of prior austenite grains is not greater than 1.5, the average short diameter of the prior austenite grains is within a range of 60 to 700 μm; and the contents of Ti, N, S and the short diameter dr of the prior austenite grains satisfy the following expression (1) and (2): when Ti/N

公开(公告)号：US20100000286A1

公开(公告)日：2010-01-07

申请号：US12561884

申请日：2009-09-17

申请人： Tsutomu Arita

发明人： Tsutomu Arita

IPC分类号： B21C37/06 ,  F16L9/00

CPC分类号： B21C37/06 ,  B21D9/00 ,  B21D9/18 ,  B23K31/022 ,  B23K2101/10 ,  Y10T29/49391 ,  Y10T29/49428

摘要： Provided are a seamless bent pipe constituted by a bent section and straight pipe sections on both ends of the bent section, with the inside diameter at each pipe end portion being larger than the inside diameter of the bent section, and a welded component comprising a seamless bent pipe and a seamless straight pipe at one or each end of the seamless bent pipe, with the end of the seamless straight pipe to be welded to one or each end of the seamless bent pipe having the same inside diameter as the inside diameter of the seamless bent pipe, as well as methods of manufacturing them. As a result, elements suited for use in pipelines can be obtained, without unnecessarily increasing the wall thickness of the seamless bent pipe and without internal machining of the pipe end portions of the seamless bent pipe after the manufacturing thereof.

摘要翻译： 提供一种由弯曲部分和弯曲部分两端的直管部分构成的无缝弯管，每个管端部的内径大于弯曲部分的内径，焊接部件包括无缝 弯曲管和无缝弯管的一端或两端的无缝直管，无缝直管的端部焊接到无缝弯管的一端或两端，内径与内径相同 无缝弯管，以及其制造方法。 结果，可以获得适用于管道的元件，而无需增加无缝弯管的壁厚，并且在其制造之后，无缝内弯曲管的管端部不进行内部加工。

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

CPC分类号： B21D41/02 ,  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。