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16 条记录 (耗时 0.031 秒)

    Piercing mill
    7.
    发明授权
    Piercing mill 有权
    穿孔机

    公开(公告)号：US08104316B2

    公开(公告)日：2012-01-31

    申请号：US12568698

    申请日：2009-09-29

    申请人： Naoya Hirase ,  Tomio Yamakawa ,  Kazuhiro Shimoda

    发明人： Naoya Hirase ,  Tomio Yamakawa ,  Kazuhiro Shimoda

    IPC分类号： B21B19/04

    CPC分类号： B21B19/04 ,  B21B23/00 ,  B21B39/165

    摘要： A piercing mill includes a plurality of inclined rolls, a plug, a pusher, and an undriven guide roll. The pusher pushes a round billet from the rear end at least until the round billet advances for a prescribed distance after contacting the inclined rolls. The guide roll is between the inclined rolls and the pusher and includes a roll shaft and a roll surface, with the roll shaft arranged obliquely with respect to a pass line PL. The sectional shape of the roll surface is a concave arch shape. The round billet is rotated by the guide roll and the friction force generated when the round billet contacts the inclined rolls is reduced. Consequently, the wear of the inclined rolls can be restrained if the round billet is pierced and rolled while it is pushed in between the inclined rolls using the pusher.

    摘要翻译： 穿孔机包括多个倾斜辊，塞子，推动器和未驱动的引导辊。 推动器从后端推动圆钢坯至少直到圆钢坯在接触倾斜辊之后前进一段规定的距离。 引导辊位于倾斜辊和推动器之间，并且包括辊轴和辊表面，辊轴相对于通过线PL倾斜布置。 辊表面的截面形状是凹拱形状。 圆钢坯被导向辊旋转，并且当圆钢坯接触倾斜辊时产生的摩擦力减小。 因此，如果圆钢坯在使用推动器推入倾斜辊之间的同时被冲压并滚动，则可以抑制倾斜辊的磨损。

    PIERCING MILL
    8.
    发明申请
    PIERCING MILL 有权
    起重机

    公开(公告)号：US20100011831A1

    公开(公告)日：2010-01-21

    申请号：US12568698

    申请日：2009-09-29

    申请人： Naoya Hirase ,  Tomio Yamakawa ,  Kazuhiro Shimoda

    发明人： Naoya Hirase ,  Tomio Yamakawa ,  Kazuhiro Shimoda

    IPC分类号： B21B39/14

    CPC分类号： B21B19/04 ,  B21B23/00 ,  B21B39/165

    摘要： A piercing mill includes a plurality of inclined rolls, a plug, a pusher, and an undriven guide roll. The pusher pushes a round billet from the rear end at least until the round billet advances for a prescribed distance after contacting the inclined rolls. The guide roll is between the inclined rolls and the pusher and includes a roll shaft and a roll surface, with the roll shaft arranged obliquely with respect to a pass line PL. The sectional shape of the roll surface is a concave arch shape. The round billet is rotated by the guide roll and the friction force generated when the round billet contacts the inclined rolls is reduced. Consequently, the wear of the inclined rolls can be restrained if the round billet is pierced and rolled while it is pushed in between the inclined rolls using the pusher.

    摘要翻译： 穿孔机包括多个倾斜辊，塞子，推动器和未驱动的引导辊。 推动器从后端推动圆钢坯至少直到圆钢坯在接触倾斜辊之后前进一段规定的距离。 引导辊位于倾斜辊和推动器之间，并且包括辊轴和辊表面，辊轴相对于通过线PL倾斜布置。 辊表面的截面形状是凹拱形状。 圆钢坯被导向辊旋转，并且当圆钢坯接触倾斜辊时产生的摩擦力减小。 因此，如果圆钢坯在使用推动器推入倾斜辊之间的同时被冲压并滚动，则可以抑制倾斜辊的磨损。

    Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel
    9.
    发明授权
    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：US07866199B2

    公开(公告)日：2011-01-11

    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： B21D31/00

    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。 Tnn; 1575-4.45×Vf-104.7×{-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表示入口侧的坯料的半径（mm），th表示穿孔后的管的径向厚度（mm）。

    Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel
    10.
    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）。