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    Tube shell for manufacturing a seamless steel pipe and a method for its manufacture
    5.
    发明申请
    Tube shell for manufacturing a seamless steel pipe and a method for its manufacture 有权
    用于制造无缝钢管的管壳及其制造方法

    公开(公告)号：US20060283225A1

    公开(公告)日：2006-12-21

    申请号：US11312934

    申请日：2005-12-21

    申请人： Kazuhiro Shimoda ,  Tomio Yamakawa ,  Hiroyuki Semba ,  Hirofumi Hori ,  Tsuneo Kondo

    发明人： Kazuhiro Shimoda ,  Tomio Yamakawa ,  Hiroyuki Semba ,  Hirofumi Hori ,  Tsuneo Kondo

    IPC分类号： B21B19/04

    CPC分类号： C22C38/44 ,  B21B3/02 ,  B21B19/04 ,  C22C38/02 ,  C22C38/58 ,  Y10S72/70

    摘要： A pierced shell of an austenitic stainless steel having a good inner surface condition is provided, and a means is established which can perform mass production on an industrial scale of a good quality seamless steel pipe of stainless steel. An austenitic stainless steel billet with a P content of at most 0.040% and an S content of at most 0.020% is pierced under conditions such that the pipe expansion ratio H (outer diameter of shell/diameter of billet to be worked) satisfies the following equation to obtain a tube shell of an austenitic stainless steel. {P(%)/(0.025×H−0.01)}2+{S(%)/(0.015×H−0.01)}2≦1 When manufacturing a seamless steel pipe of an austenitic stainless steel, the above-described shell is rolled to form a pipe.

    摘要翻译： 提供具有良好的内表面状态的奥氏体不锈钢的穿孔壳，并且建立了可以在不锈钢质量好的无缝钢管的工业规模上进行批量生产的手段。 在膨胀比H（壳的外径/待加工坯料直径）满足以下条件的条件下，对P含量为0.040％以下且S含量为0.020％以下的奥氏体不锈钢坯料进行穿孔 获得奥氏体不锈钢管壳的方程式。 <？in-line-formula description =“In-line Formulas”end =“lead”？> {P（％）/（0.025xH-0.01）} <2> + {S（％）/ （0.015×H-0.01）} <= 1 <？in-line-formula description =“In-line Formulas”end =“tail”？>制造奥氏体不锈钢的无缝钢管 钢，将上述壳体轧制成管。

    Tube shell for manufacturing a seamless steel pipe and a method for its manufacture
    6.
    发明授权
    Tube shell for manufacturing a seamless steel pipe and a method for its manufacture 有权
    用于制造无缝钢管的管壳及其制造方法

    公开(公告)号：US07260966B2

    公开(公告)日：2007-08-28

    申请号：US11312934

    申请日：2005-12-21

    申请人： Kazuhiro Shimoda ,  Tomio Yamakawa ,  Hiroyuki Semba ,  Hirofumi Hori ,  Tsuneo Kondo

    发明人： Kazuhiro Shimoda ,  Tomio Yamakawa ,  Hiroyuki Semba ,  Hirofumi Hori ,  Tsuneo Kondo

    IPC分类号： B21B19/04

    CPC分类号： C22C38/44 ,  B21B3/02 ,  B21B19/04 ,  C22C38/02 ,  C22C38/58 ,  Y10S72/70

    摘要： A pierced shell of an austenitic stainless steel having a good inner surface condition is provided, and a means is established which can perform mass production on an industrial scale of a good quality seamless steel pipe of stainless steel. An austenitic stainless steel billet with a P content of at most 0.040% and an S content of at most 0.020% is pierced under conditions such that the pipe expansion ratio H (outer diameter of shell/diameter of billet to be worked) satisfies the following equation to obtain a tube shell of an austenitic stainless steel. {P(%)/(0.025×H−0.01)}2+{S(%)/(0.015×H−0.01)}2≦1. When manufacturing a seamless steel pipe of an austenitic stainless steel, the above-described shell is rolled to form a pipe.

    摘要翻译： 提供了具有良好的内表面状态的奥氏体不锈钢的穿孔壳，并且建立了可以在不锈钢质量好的无缝钢管的工业规模上进行批量生产的手段。 在膨胀比H（壳的外径/待加工坯料直径）满足以下条件的条件下，对P含量为0.040％以下且S含量为0.020％以下的奥氏体不锈钢坯料进行穿孔 获得奥氏体不锈钢管壳的方程式。 {P（％）/（0.025×H-0.01）} 2 + {S（％）/（0.015xH-0.01）} 2 <= 1。 当制造奥氏体不锈钢的无缝钢管时，将上述壳轧制成管。

    Fe-Ni alloy pipe stock and method for manufacturing the same
    7.
    发明授权
    Fe-Ni alloy pipe stock and method for manufacturing the same 有权
    铁镍合金管材及其制造方法

    公开(公告)号：US08784581B2

    公开(公告)日：2014-07-22

    申请号：US11643823

    申请日：2006-12-22

    申请人： Masaaki Igarashi ,  Kazuhiro Shimoda ,  Tomio Yamakawa ,  Hisashi Amaya

    发明人： Masaaki Igarashi ,  Kazuhiro Shimoda ,  Tomio Yamakawa ,  Hisashi Amaya

    IPC分类号： C21D8/10 ,  C22C38/00 ,  C22C38/04

    CPC分类号： C22F1/10 ,  B21B23/00 ,  C21D8/10 ,  C22C19/055 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

    摘要： An Fe—Ni alloy pipe stock containing, by mass %, C≦0.04%, Si≦0.50%, Mn: 0.01 to 6.0%, P≦0.03%, S≦0.01%, Cr: 20 to 30%, Ni: 30 to 45%, Mo: 0 to 10%, W: 0 to 20%, with Mo(%)+0.5W(%): more than 1.5% to not more than 10%, Cu: 0.01 to 1.5%, Al≦0.01% and N: 0.0005 to 0.20%, and the balance being Fe, with 1440−6000P−100S−2000C≧1300, Ni+10(Mo+0.5W)+100N≦120, (Ni−35)+10(N−0.1)−2(Cr−25)−5(Mo+0.5W−3)+8≧0, can be manufactured into a seamless pipe by use of a Mannesmann piercing and rolling mill because of its excellent inner surface properties. The resulting seamless pipe has excellent mechanical properties and moreover has excellent corrosion resistance in a sour gas environment.

    摘要翻译： 一种Fe-Ni合金管材，以质量％计含有C％，0.04％，Si＆NlE; 0.50％，Mn：0.01〜6.0％，P＆lt; L; 0.03％，S＆NlE; 0.01％，Cr：20〜30％，Ni：30 〜45％，Mo：0〜10％，W：0〜20％，Mo（％）+ 0.5W（％）：大于1.5％以上10％以下，Cu：0.01〜1.5％ 0.01％，N：0.0005〜0.20％，余量为Fe，1440-6000P-100S-2000C≥300，Ni + 10（Mo + 0.5W）+ 100N＆NlE; 120，（Ni-35）+10 -0.1）-2（Cr-25）-5（Mo + 0.5W-3）+8≥0可由Mannesmann穿孔轧机制成无缝管，因为其内表面性能优异。 所得到的无缝管具有优异的机械性能，并且在酸性气体环境中具有优异的耐腐蚀性。

    METHOD FOR PRODUCING SEAMLESS TUBE/PIPE
    8.
    发明申请
    METHOD FOR PRODUCING SEAMLESS TUBE/PIPE 有权
    生产无缝管/管的方法

    公开(公告)号：US20130255342A1

    公开(公告)日：2013-10-03

    申请号：US13991635

    申请日：2011-12-06

    申请人： Kenichi Saitou ,  Kazuhiro Shimoda ,  Tomio Yamakawa

    发明人： Kenichi Saitou ,  Kazuhiro Shimoda ,  Tomio Yamakawa

    IPC分类号： B21B21/02

    CPC分类号： B21B21/02 ,  B21B19/04 ,  B21B25/00 ,  B21B2261/08 ,  B21B2261/10

    摘要： By using a piercing mill that includes a pusher on the entrance side, a plug on the exit side along a pass line, and a plurality of angled rolls as being provided around the plug so as face to each other, in the case where the maximum diameter of an unsound region consisting of center segregation and porosity in a cross section of a billet is d [mm], piercing-rolling is performed under the condition that the plug nose rolling reduction ratio (TDF) expressed by Formula (1) satisfies Formula (2). TDF=(Bd−D1)/Bd  (1) TDF≦−0.50×(d/Bd)+0.06  (6) In Formulae (1) and (2), Bd is the billet diameter [mm], and D1 is the opening [mm] between the angled rolls at the plug nose position. Thereby, when piercing-rolling is performed, the occurrence of an inner surface flaw attributable to the center segregation and porosity in the billet can be prevented reliably.

    摘要翻译： 通过使用包括在入口侧的推动器的穿孔机，沿着通行线的出口侧的塞子和在插头周围设置成彼此面对的多个成角度的辊，在最大值 在坯料的横截面中由中心偏析和孔隙率组成的不固定区域的直径为d [mm]，在由式（1）表示的塞子前端滚动压下率（TDF）满足公式的条件下进行穿孔轧制 （2）。 TDF =（Bd-D1）/ Bd（1）TDF@-0.50×（d / Bd）+0.06（6）在公式（1）和（2）中，Bd是坯料直径[mm]，D1是 在插头前端位置的成角度的卷轴之间打开[mm]。 因此，当进行穿孔轧制时，可以可靠地防止由于中心偏析引起的内表面缺陷的发生和坯料中的孔隙率的发生。

    Pusher device for piercing and rolling and method of manufacturing seamless pipe or tube using the same
    9.
    发明授权
    Pusher device for piercing and rolling and method of manufacturing seamless pipe or tube using the same 有权
    用于穿孔和推轧的推进装置及使用其制造无缝管或管的方法

    公开(公告)号：US08020421B2

    公开(公告)日：2011-09-20

    申请号：US12685869

    申请日：2010-01-12

    申请人： Tomio Yamakawa ,  Kazuhiro Shimoda

    发明人： Tomio Yamakawa ,  Kazuhiro Shimoda

    IPC分类号： B21B19/04

    CPC分类号： B21B19/04 ,  B21B23/00 ,  B21B39/06 ,  B21B2261/08 ,  B21B2261/10

    摘要： A pusher device 4 includes a cylinder device 30 and a pusher mandrel 34. The cylinder device 30 includes a cylinder shaft 32. The pusher mandrel 34 is attached to the tip end of the cylinder shaft 32. The tip end of the pusher mandrel 34 is abutted against the rear end of a billet 20. The cross sectional area Sp of the pusher mandrel 34 and the cross sectional area Sb of the billet 20 satisfy Expression (1). The length Lp of the pusher mandrel 34 and the cross sectional area Sp of the pusher mandrel 34 satisfy Expression (2). The moving distance Lc of the tip end of the cylinder shaft 32 during piercing and rolling and the outer diameter Dc of the cylinder shaft 32 satisfy Expression (3). Therefore, the pusher device 4 can restrain the wall thickness deviation of the tip end part of a produced hollow shell. 0.3≦Sp/Sb  (1) Lp/Sp≦1.2  (2) Lc/Dc≦45  (3)

    摘要翻译： 推动装置4包括气缸装置30和推动心轴34.气缸装置30包括气缸轴32.推动心轴34附接到气缸轴32的末端。推动心轴34的尖端是 抵靠坯料20的后端。挤压心轴34的截面面积Sp和坯料20的横截面积Sb满足式（1）。 推动心轴34的长度Lp和推动心轴34的横截面面积Sp满足式（2）。 穿孔轧制时的圆筒轴32的前端的移动距离Lc和圆筒轴32的外径Dc满足式（3）。 因此，推动装置4能够抑制制造的中空壳的前端部的壁厚偏差。 0.3＆nlE; Sp / Sb（1）Lp / Sp＆nlE; 1.2（2）Lc / Dc＆nlE; 45（3）