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102 条记录 (耗时 0.036 秒)

    Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel
    71.
    发明申请
    Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel 有权
    制造高Cr高镍合金钢无缝钢管的方法

    公开(公告)号：US20100000281A1

    公开(公告)日：2010-01-07

    申请号：US12457978

    申请日：2009-06-26

    申请人： Naoya Hirase ,  Tomio Yamakawa ,  Kazuhiro Shimoda

    发明人： Naoya Hirase ,  Tomio Yamakawa ,  Kazuhiro Shimoda

    IPC分类号： B21B27/06

    CPC分类号： B21B19/04 ,  B21B3/02 ,  B21B37/76 ,  B21B37/78 ,  B21B45/004 ,  B21B2261/04 ,  B21B2261/08 ,  B21B2261/20 ,  B21B2275/04 ,  C21D8/10 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  Y10S72/70

    摘要： a billet made of high Cr-high Ni alloy, which contains, by mass percent, 20 to 30% of Cr, 30 to 50% of Ni, and at least one element selected from Mo and W with a value “Mo+0.5W” of 1.5% or more is heated under conditions satisfying the following formula (1), and then the billet is pierced and rolled using an inclined roll type piercing mill with a roll gouge circumferential speed of 2.28 m/sec or higher. This prevents melted rash on the inner surface and lengthens the plug life. T≦1575−4.45×Vf−104.7×{−ln(th/ro)}  (1) wherein T indicates a heating temperature (° C.) of the billet, Vf indicates the roll gouge circumferential speed (m/sec), ro indicates a radius (mm) of a billet at an entry-side, and th indicates a radial thickness (mm) of a pipe after piercing.

    摘要翻译： 由高Cr高Ni合金制成的坯料，其以质量％计含有20〜30％的Cr，30〜50％的Ni，以及选自Mo和W中的至少一种元素，其值为“Mo + 0.5W 在满足下述式（1）的条件下加热1.5％以上，然后使用辊式圆周速度2.28m /秒以上的倾斜辊式穿孔机对坯料进行穿孔和轧制。 这可以防止内表面出现熔化的皮疹，并延长插头的使用寿命。 TVf-104.7x {-ln（th / ro）}（1）其中T表示钢坯的加热温度（℃），Vf表示轧辊圆周速度（m / sec），ro表示半径（mm ），th表示穿孔后的管的径向厚度（mm）。

    Tube shell for manufacturing a seamless steel pipe and a method for its manufacture
    75.
    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。

    Method of controlling inter-stand tension in rolling mills
    78.
    发明授权
    Method of controlling inter-stand tension in rolling mills 失效
    控制轧机间间张力的方法

    公开(公告)号：US4089196A

    公开(公告)日：1978-05-16

    申请号：US781327

    申请日：1977-03-25

    申请人： Katsuya Kondo ,  Tomio Yamakawa

    发明人： Katsuya Kondo ,  Tomio Yamakawa

    IPC分类号： B21B1/18 ,  B21B37/00 ,  B21B37/48 ,  B21B37/52 ,  G05D13/62 ,  B21B37/06

    CPC分类号： B21B37/52 ,  B21B37/48 ,  B21B1/18

    摘要： There is disclosed a method of controlling inter-stand tension in rolling mills in which a tension measuring device is provided on each stand. The tension measuring device comprises a pair of load sensing devices provided respectively at the entry and delivery sides of the roll stand. Difference between outputs from the pair of load sensing devices is used as an output value of the tension measuring device. First, while a workpiece is captured by the second stand but is not yet captured by the third stand and when the tension in the workpiece between the first and second stands is consistent with a desired value, the output value from the tension measuring device of the second stand is stored. After the workpiece has been captured by the third stand, the difference between the stored output value and the output value from the tension measuring device of the second stand is used as the measured value of tension. The tension control for the workpiece between the second and third stands is carried out on the basis of the difference between the measured value and a desired value of tension between the second and third stands.

    摘要翻译： 公开了一种控制轧机的机架间张力的方法，其中在每个支架上设置张力测量装置。 张力测量装置包括分别设置在辊架的入口侧和出口侧的一对负载感测装置。 使用来自一对负载感测装置的输出之间的差异作为张力测量装置的输出值。 首先，当工件被第二支架捕获但是尚未被第三支架捕获时，并且当第一和第二支架之间的工件中的张力与期望值一致时，来自张力测量装置的输出值 第二支架被存储。 在第三支架被捕获工件之后，使用来自第二支架的张力测量装置的存储的输出值和输出值之间的差作为张力的测量值。 基于第二和第三机架之间的测量值和期望的张力值之间的差异来进行第二和第三机架之间的工件的张力控制。

    Fe-Ni alloy pipe stock and method for manufacturing the same
    79.
    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 straightening tube and straightening roll
    80.
    发明授权
    Method for straightening tube and straightening roll 有权
    矫正矫直辊的方法

    公开(公告)号：US08783085B2

    公开(公告)日：2014-07-22

    申请号：US13589342

    申请日：2012-08-20

    申请人： Yoshiyuki Kuroiwa ,  Kouichi Kuroda ,  Tomio Yamakawa

    发明人： Yoshiyuki Kuroiwa ,  Kouichi Kuroda ,  Tomio Yamakawa

    IPC分类号： B21B23/00 ,  B21D3/04 ,  B21D3/05 ,  B21B19/00

    CPC分类号： B21D3/04

    摘要： A method for straightening a tube by using an asymmetric roll, which has different diameters D1 (exit side), D2 (entry side) at relative maximum diameter portions, left and right roll shoulder portions, as a straightening roll of a straightener, wherein the roll shoulder having a smaller diameter is disposed to be located on the tube entry side. The straightening roll used therefor comprises roll shoulders 3a and 3b and a roll barrel portion 4, in which D1>D2 and 0.004≦(D1−D2)/d≦0.2 (d: outer diameter of tube to be straightened) are satisfied. Further, an aspect of the invention may define radii of curvatures of entry-side and exit-side shoulder potions in a section of the roll cut along a plane including the roll central axis, or a curve representing an outer surface of the roll barrel portion.

    摘要翻译： 通过使用作为矫直机的矫直辊的相对最大直径部分（相对最大直径部分）D2直径（入口侧）不同直径的不对称辊矫直管的方法，其中， 具有较小直径的辊肩设置在管入口侧。 用于其的矫直辊包括辊肩3a和3b以及辊筒部分4，其中D1> D2和0.004＆amp; N1;（D1-D2）/d≤n1E.0.2（d：要矫直的管的外径）。 此外，本发明的一个方面可以限定沿着包括辊中心轴的平面的辊切割部分中的入口侧和出口侧肩部的曲率半径，或表示辊筒部分的外表面的曲线 。