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    Method of manufacturing plug used to pierce and roll metal material, method of manufacturing metal pipe and plug used to pierce and roll metal material
    3.
    发明授权
    Method of manufacturing plug used to pierce and roll metal material, method of manufacturing metal pipe and plug used to pierce and roll metal material 有权
    制造用于刺穿和轧制金属材料的插头的方法，用于刺穿和轧制金属材料的金属管和塞子的制造方法

    公开(公告)号：US08065900B2

    公开(公告)日：2011-11-29

    申请号：US12533390

    申请日：2009-07-31

    申请人： Yasuyoshi Hidaka ,  Naoya Hirase ,  Yasuhiro Kouchi

    发明人： Yasuyoshi Hidaka ,  Naoya Hirase ,  Yasuhiro Kouchi

    IPC分类号： B21B19/04

    CPC分类号： B21B25/00 ,  B21B19/04 ,  C23C8/14

    摘要： A plug material having a prescribed shape is prepared, the prepared plug material is thermally treated in a heat treatment atmosphere that contains at least 1.0 vol. % oxygen at a heat treatment temperature of at least 950° C. and less than 1050° C. and thus a plug having an oxide scale layer 30 on the surface is manufactured. According to the manufacturing method, pores PO that extend along the surface SF of the plug material are formed under outer scale layer 20 in the oxide scale layer 30, which allows cracks to be more easily propagated in the outer scale layer 20. Therefore, the outer scale layer 20 is more easily peeled off than the conventional one.

    摘要翻译： 制备具有规定形状的塞子材料，将所制备的塞子材料在包含至少1.0体积％的热处理气氛中进行热处理。 在氧化处理温度为至少950℃且低于1050℃的氧气中制造氧，因此制造了表面上具有氧化皮层30的塞子。 根据制造方法，在氧化皮层30中的外标尺层20上形成有沿插塞材料的表面SF延伸的孔PO，这允许裂纹在外标尺层20中更容易传播。因此， 外标层20比常规剥离更容易。

    Martensitic stainless steel products
    5.
    发明授权
    Martensitic stainless steel products 有权
    马氏体不锈钢制品

    公开(公告)号：US06440234B1

    公开(公告)日：2002-08-27

    申请号：US09453714

    申请日：1999-12-03

    申请人： Hisashi Amaya ,  Toshiro Anraku ,  Yasuyoshi Hidaka

    发明人： Hisashi Amaya ,  Toshiro Anraku ,  Yasuyoshi Hidaka

    IPC分类号： C22C3818

    CPC分类号： C21D7/06 ,  Y10S148/909

    摘要： A martensitic stainless steel product having a chromium content of 9 to 15% by weight and a surface from which mill scales generated during production are removed by a shot blasting. The surface satisfies that, when a color image of the surface taken with 640×480 pixels is analyzed on blue color and a histogram of the pixel numbers and the tones divided into 0 to 255 classes is obtained, a relationship between the maximum frequency Yp and the tone value Xp at which Yp is counted satisfies an inequality, 800Xp−Yp−27000>0. This steel product is superior in weatherability under atmospheric environments, and also superior in sulfide stress cracking resistance under environments containing hydro-sulfide.

    摘要翻译： 通过喷丸除去铬含量为9〜15重量％的马氏体不锈钢产品和在生产过程中产生的氧化皮的表面。 表面满足当以蓝色分析以640×480像素拍摄的表面的彩色图像，并且获得被划分为0至255类的像素数和色调的直方图时，最大频率Yp和色调之间的关系 计数Yp的值Xp满足不等式，800Xp-Yp-27000> 0。 该钢制品在大气环境下的耐候性优异，在含硫化氢的环境下，耐硫化物应力开裂性也优异。

    MANDREL BAR CLEANING FACILITY
    6.
    发明申请
    MANDREL BAR CLEANING FACILITY 审中-公开
    MANDREL酒吧清洁设施

    公开(公告)号：US20100269868A1

    公开(公告)日：2010-10-28

    申请号：US12377315

    申请日：2007-08-06

    申请人： Kouji Nakaike ,  Yasuyoshi Hidaka ,  Sumio Iida

    发明人： Kouji Nakaike ,  Yasuyoshi Hidaka ,  Sumio Iida

    IPC分类号： B21B45/02

    CPC分类号： B08B3/022 ,  B21B17/04 ,  B21B17/14 ,  B21B23/00 ,  B21B25/00 ,  B21B25/04

    摘要： It is an object of the present invention to provide a mandrel bar cleaning facility capable of effectively suppressing carburization generated on the inner surface of a pipe or tube while the pipe or tube is elongated and rolled without hindering an operation.A mandrel bar cleaning facility 15 of the present invention cleans a mandrel bar B which is pulled out of a mandrel bar conveying line after being used for elongating and rolling a pipe or tube in a mandrel mill 8. The mandrel bar cleaning facility 15 is provided with conveying devices 17, 18 that convey the mandrel bar B in the axial direction while revolving the mandrel bar B in the peripheral direction, and cleaning devices 1d that are arranged oppositely to the side of the mandrel bar B conveyed by the conveying devices 17, 18, and jet high-pressure water having a water pressure of 0.2 to 150 MPa (preferably, 20 to 150 MPa) toward the outer surface of the mandrel bar B.

    摘要翻译： 本发明的目的是提供一种芯棒清洗设备，能够有效地抑制管或管的内表面上产生的渗碳，同时在不妨碍操作的情况下延长和滚动管子。 本发明的芯棒清洗装置15清洗了在用于在芯棒式无缝管轧机8中延长和轧制管或管的芯棒输送线之后拉出的芯棒B.提供了芯棒清洗装置15 具有沿轴向传送芯棒B的输送装置17,18，同时使芯棒B沿圆周方向旋转，以及与由输送装置17输送的芯棒B的相反侧布置的清洁装置1d， 18，向芯棒B的外表面喷射水压为0.2〜150MPa（优选为20〜150MPa）的高压水。

    Martensitic stainless steel having oxide scale layers
    8.
    发明授权
    Martensitic stainless steel having oxide scale layers 有权
    具有氧化皮层的马氏体不锈钢

    公开(公告)号：US06210806B1

    公开(公告)日：2001-04-03

    申请号：US09253140

    申请日：1999-02-19

    申请人： Yasuyoshi Hidaka ,  Toshiro Anraku ,  Hisashi Amaya

    发明人： Yasuyoshi Hidaka ,  Toshiro Anraku ,  Hisashi Amaya

    IPC分类号： B32B900

    CPC分类号： C21D8/105 ,  C21D6/002 ,  C22C38/18

    摘要： The martensitic stainless steel product comprises a base steel and a dual oxide scale layer on a surface of the steel, wherein the dual scale layer includes an inner scale layer containing FeCr2O4 and Fe3O4 as main components and an outer scale layer containing Fe3O4 as a main component and having an outermost Fe2O3 layer; or includes an inner scale layer containing FeCr2O4 and FeO as main components and an outer scale layer containing FeO and Fe3O4 as main components and having an outermost Fe2O3 layer. If the product is a steel pipe, it exhibits excellent corrosion resistance when used for an oil country tubular goods or line pipe.

    摘要翻译： 所述马氏体系不锈钢制品在钢表面上含有基础钢和双氧化皮层，其中，所述双层氧化层包括含有FeCr 2 O 4和Fe 3 O 4作为主要成分的内标层和含有Fe 3 O 4作为主要成分的外标层 并具有最外层的Fe 2 O 3层; 或包含含有FeCr 2 O 4和FeO作为主要成分的内层，以及含有FeO和Fe 3 O 4作为主要成分并具有最外层的Fe 2 O 3层的外层。 如果产品是钢管，则在用于油罐管或管线管时表现出优异的耐腐蚀性。

    Plug, piercing-rolling mill, and method of producing seamless tube by using the same
    10.
    发明授权
    Plug, piercing-rolling mill, and method of producing seamless tube by using the same 有权
    插头，穿孔轧机，以及使用其制造无缝管的方法

    公开(公告)号：US08544306B2

    公开(公告)日：2013-10-01

    申请号：US13212929

    申请日：2011-08-18

    申请人： Yasuto Higashida ,  Yasuyoshi Hidaka ,  Kazuhiro Shimoda ,  Tomio Yamakawa

    发明人： Yasuto Higashida ,  Yasuyoshi Hidaka ,  Kazuhiro Shimoda ,  Tomio Yamakawa

    IPC分类号： B21B19/04

    CPC分类号： B21B25/00 ,  B21B19/04 ,  B21B25/04

    摘要： A plug includes a front edge portion having a convex curvature; a cylindrical portion having a truly or nearly cylindrical shape; a trunk portion having an outer diameter gradually increasing toward a rear edge thereof; a mandrel joint provided in a rear edge portion of the plug; a lubricant ejection hole running through the trunk portion from the mandrel joint that opens on the surface of the cylindrical portion; and a coating comprising oxides and Fe that is formed on the base metal surface of each of the front edge portion as well as the trunk portion by arc spraying using an iron wire. In this way, the plug can prevent inner surface flaws from occurring in a hollow blank that is deformed by piercing-rolling, and can extend its life without requiring a long time for making it.

    摘要翻译： 塞子包括具有凸曲率的前边缘部分; 具有真正或近似圆柱形形状的圆柱形部分; 躯干部分的外径朝向其后缘逐渐增加; 设置在所述插头的后端部的心轴接头; 润滑剂喷射孔，其从所述心轴接头穿过所述躯干部分，所述心轴接头在所述圆筒部分的表面上开口; 以及通过使用铁丝的电弧喷涂而形成在前边缘部分和后端部的基底金属表面上的氧化物和Fe的涂层。 以这种方式，塞子可以防止在通过穿孔轧制变形的中空坯件中发生内表面缺陷，并且可以延长其使用寿命而不需要很长时间来制造它。