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    Centrifugally cast composite roll and its production method
    3.
    发明授权
    Centrifugally cast composite roll and its production method 有权
    离心铸造复合辊及其生产方法

    公开(公告)号：US09044807B2

    公开(公告)日：2015-06-02

    申请号：US14365528

    申请日：2013-03-28

    申请人： HITACHI METALS, LTD.

    发明人： Nozomu Oda ,  Takayuki Segawa ,  Yasunori Nozaki ,  Toshiyuki Hattori

    IPC分类号： B22D13/02 ,  B21B27/00 ,  C22C37/00 ,  C22C37/06 ,  B21B27/03 ,  B32B15/01 ,  C22C37/08 ,  C22C37/10 ,  B22D19/16

    CPC分类号： B22D13/026 ,  B21B27/00 ,  B21B27/032 ,  B22D13/02 ,  B22D13/023 ,  B22D19/16 ,  B32B15/011 ,  C22C37/00 ,  C22C37/06 ,  C22C37/08 ,  C22C37/10 ,  Y10T428/12958

    摘要： A centrifugally cast composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer being made of an Fe-based alloy having a chemical composition comprising by mass at least 0.8-3.0% of Cr, 1.5-6.0% of Mo, and 1.8-5.5% of V, and a metal structure in which the area ratio of graphite is 0.3-10%; the inner layer comprising a roll body portion fused to the outer layer, and shaft portions integrally extending from both ends of the roll body portion; and the total amount of Cr, Mo and V being 0.15-2.0% by mass in end portions of both shaft portions, and the difference in the total amount of Cr, Mo and V between one shaft portion and the other shaft portion being 0.2% or more by mass.

    摘要翻译： 一种离心铸造复合辊，其包括通过离心浇铸法形成的外层，以及由球墨铸铁制成的内层，并与外层整体熔合; 所述外层由Fe系合金构成，所述Fe系合金的组成包含Cr：0.8〜3.0％，Mo：1.5〜6.0％，V：1.8〜5.5％的金属结构体， 石墨比例为0.3-10％; 所述内层包括熔融到所述外层的辊体部分和从所述辊体部分的两端一体地延伸的轴部; 两轴部的端部的Cr，Mo，V的总量为0.15〜2.0质量％，一个轴部和另一个轴部之间的Cr，Mo，V的总量的差为0.2％ 或更多。

    CYLINDER LINER AND PREPARATION METHOD THEREOF
    4.
    发明申请
    CYLINDER LINER AND PREPARATION METHOD THEREOF 有权
    气缸内衬及其制备方法

    公开(公告)号：US20150122118A1

    公开(公告)日：2015-05-07

    申请号：US14381452

    申请日：2013-02-06

    申请人： Guangdong Zhaoqing Power Accessories Co., Ltd.

    发明人： Shao He ,  Haoyan Guo ,  Weiming Li ,  Yu Chen

    IPC分类号： F16J10/04 ,  B22D19/00 ,  C04B35/622 ,  B22D13/02

    CPC分类号： F16J10/04 ,  B22D13/02 ,  B22D19/0009 ,  C04B35/622 ,  C04B2235/02 ,  C04B2235/602 ,  C23C4/04 ,  F02F1/004

    摘要： A cylinder liner with a plurality of protrusions on its outside surface and the manufacturing method thereof are disclosed. The protrusions are Ω-shaped, P-shaped or taper-shaped, and the Ω-shaped, P-shaped and taper-shaped protrusions are accounted for 50-99.5%, 0.5-30% and 0-20% of the total number of protrusions, respectively. The density of the protrusions on the outside surface of the cylinder liner is 15-65 per square centimeter. The outer surface of the protrusions of the cylinder liner is curved, and has a large contact area and a concave which can be filled by an aluminum sheath to improve the radial bearing capacity, so as to effectively improve the bite force between the cylinder liner and the outside aluminum sheath and prevent the cylinder liner from breaking away from the cylinder body.

    摘要翻译： 公开了一种在其外表面上具有多个突起的气缸套及其制造方法。 突出物为OH形，P形或锥形，并且形状，P形和锥形突起占50-99.5％，0.5-30％和0-20％ 突起总数分别为 气缸套外表面上的突起的密度为每平方厘米15-65。 气缸套的突出部的外表面是弯曲的，并且具有大的接触面积和可由铝护套填充的凹部，以提高径向承载能力，从而有效地改善气缸套与缸套之间的咬合力 外侧铝合金外壳，防止气缸套与气缸体分离。

    CENTRIFUGALLY CAST COMPOSITE ROLL AND ITS PRODUCTION METHOD
    5.
    发明申请
    CENTRIFUGALLY CAST COMPOSITE ROLL AND ITS PRODUCTION METHOD 有权
    离心铸造复合辊及其生产方法

    公开(公告)号：US20140248511A1

    公开(公告)日：2014-09-04

    申请号：US14349009

    申请日：2012-11-21

    申请人： HITACHI METALS, LTD.

    发明人： Nozomu Oda ,  Takayuki Segawa ,  Yasunori Nozaki

    IPC分类号： B32B15/01 ,  B22D13/02

    CPC分类号： B32B15/011 ,  B21B27/00 ,  B21B27/03 ,  B22D13/02 ,  B22D19/16 ,  C22C37/08 ,  C22C37/10 ,  Y10T29/49563 ,  Y10T428/12958

    摘要： A centrifugally cast composite roll comprising an outer layer made of cast iron having a chemical composition comprising, by mass, 2.7-3.5% of C, 1.5-2.5% of Si, 0.4-1.0% of Mn, 3.7-5.1% of Ni, 0.8-2.2% of Cr, 1.5-4.5% of Mo, 2.0-4.5% of V, and 0.5-2.0% of Nb, the balance being Fe and inevitable impurities, a mass ratio of Nb/V being 0.18-0.65, and a mass ratio of Mo/V being 0.7-2.5, and a structure comprising, by area, 15-45% of a cementite phase and 1-10% of a graphite phase, and an inner layer made of cast iron having excellent mechanical strength and metallurgically bonded to the outer layer; a usable region of the outer layer as deep as 10 mm or more from the surface containing substantially no speck-like-segregated dendrites of bainite and/or martensite having diameters of 1.5 mm or more.

    摘要翻译： 一种离心铸造复合辊，其包括由铸铁制成的外层，其具有以质量计包含C：2.7-3.5％的Si，1.5-2.5％的Si，0.4-1.0％的Mn，3.7-5.1％的Ni， Cr的0.8-2.2％，Mo中的1.5-4.5％，V为2.0-4.5％，Nb为0.5-2.0％，余量为Fe和不可避免的杂质，Nb / V的质量比为0.18-0.65， Mo / V的质量比为0.7-2.5，以及包括面积为15-45％的渗碳体相和1-10％石墨相的结构，以及由铸铁制成的具有优异的机械强度的内层 并与外层冶金结合; 外表面的可用区域从基本上不含有直径为1.5mm以上的贝氏体和/或马氏体的斑点状分离的树突的表面的深度为10mm以上。

    Pipe for steam turbine, manufacturing process of same, main stream pipe and reheat pipe for steam turbine, and steam turbine power plant using those pipes
    6.
    发明授权
    Pipe for steam turbine, manufacturing process of same, main stream pipe and reheat pipe for steam turbine, and steam turbine power plant using those pipes 有权
    蒸汽轮机管道，制造工艺相同，蒸汽轮机主流管道和再热管，以及使用这些管道的蒸汽轮机发电厂

    公开(公告)号：US07632066B2

    公开(公告)日：2009-12-15

    申请号：US11480978

    申请日：2006-07-06

    申请人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Kenichi Murata ,  Hajime Toriya

    发明人： Masahiko Arai ,  Hirotsugu Kawanaka ,  Hiroyuki Doi ,  Kenichi Murata ,  Hajime Toriya

    IPC分类号： F01D25/00

    CPC分类号： B22D13/02 ,  C22C38/001 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  F05B2260/60

    摘要： A pipe for a steam turbine is formed of a centrifugal casting material to achieve resistance against higher temperatures and improve reliability of the pipe by employing, as a pipe material, a centrifugal casting material normalized to contain uniform and finer crystal grains. The centrifugal casting material is made of steel having a columnar structure in the radial direction with the crystal grain size number of 5 or more in a plane perpendicular to the radial direction. The steel includes 0.05-0.5% by mass C, not more than 1.0% Si, 0.05-1.5% Mn, 0.01-2.5% Ni, 8.0-13.0% Cr, 0.05-2.5% Mo, not more than 3.0% W, 0.05-0.35% V, 0.01-0.5% Nb, not more than 5% Co, 0.01-0.1% N, not more than 0.03% B, and not more than 0.05% Al.

    摘要翻译： 用于汽轮机的管由离心铸造材料形成，以通过采用归一化为含有均匀和更细晶粒的离心铸造材料作为管材料来实现耐高温性和提高管的可靠性。 离心铸造材料由垂直于径向方向的平面中的晶粒尺寸数为5以上的在径向具有柱状结构的钢制成。 该钢含有0.05〜0.5质量％的C，不大于1.0％的Si，0.05-1.5％的Mn，0.01-2.5％的Ni，8.0-13.0％的Cr，0.05-2.5％的Mo，不大于3.0％的W，0.05 -0.35％V，0.01-0.5％Nb，不大于5％Co，0.01-0.1％N，不大于0.03％B和不大于0.05％Al。

    Method and apparatus for centrifugal casting of metal
    8.
    发明授权
    Method and apparatus for centrifugal casting of metal 失效
    离心铸造金属的方法和装置

    公开(公告)号：US06932143B2

    公开(公告)日：2005-08-23

    申请号：US10815945

    申请日：2004-04-02

    申请人： Charles H. Noble

    发明人： Charles H. Noble

    IPC分类号： B22D13/02

    CPC分类号： B22D13/02

    摘要： A method and apparatus for centrifugal casting of metal articles uses a rotating mold body that can be pivoted from a vertical orientation to a horizontal orientation during the centrifugal casting of the metal article. The resulting metal article has a closed end and an open end defining a hollow cavity. The mold body has a closed end that is oriented in a vertical position with the longitudinal axis extending vertically. While the mold body is rotated, an amount of molten metal is introduced into the mold body so that the molten metal is distributed along the closed end of the mold body. In one embodiment, the bottom end of the mold body has a frustoconical shaped surface defining the mold cavity. The mold body is then pivoted to a horizontal position while continuously rotating to distribute and cast the metal against the inner surface of the mold body. In one embodiment, the mold body has a refractory lining of a compacted refractory material. The refractory material is introduced into the rotating mold and a blade is contacted with the layer of the refractory material formed on the inner surface while the mold is rotated in a first direction to compact and densify the layer of particles with a flat end of the blade. The rotation of the mold body is then reversed and the sharp edge of the blade is contacted with the compacted layer to shape and contour the mold lining.

    摘要翻译： 用于金属制品的离心铸造的方法和装置使用旋转模具本体，其在金属制品的离心铸造期间可以从垂直取向枢转到水平取向。 所得的金属制品具有限定中空腔的封闭端和开口端。 模具主体具有纵向轴向垂直延伸的垂直位置的封闭端。 当模具体旋转时，一定量的熔融金属被引入到模具体中，使得熔融金属沿着模体的封闭端部分布。 在一个实施例中，模体的底端具有限定模腔的截头圆锥形表面。 然后将模具主体枢转到水平位置，同时连续旋转以将金属分布和铸造抵靠模具体的内表面。 在一个实施例中，模具主体具有压实的耐火材料的耐火衬里。 将耐火材料引入旋转模具中，并且使刀片与形成在内表面上的耐火材料层接触，同时模具沿着第一方向旋转以致压缩并使刀片层的平坦端部致密化 。 然后模具体的旋转被反转，并且刀片的锋利边缘与压实层接触以使模具衬里成形和轮廓。

    Alloy pipes and methods of making same
    9.
    发明授权
    Alloy pipes and methods of making same 有权
    合金管及其制作方法

    公开(公告)号：US06923900B2

    公开(公告)日：2005-08-02

    申请号：US09874168

    申请日：2001-06-04

    申请人： John Jones ,  Michael J. Yardley ,  Terry K Barker

    发明人： John Jones ,  Michael J. Yardley ,  Terry K Barker

    IPC分类号： C25F3/02 ,  B22D13/02 ,  B23H9/00 ,  C10G9/20 ,  C22C33/08 ,  F16L9/02 ,  F28F1/40 ,  F28F21/08 ,  C25F7/00

    CPC分类号： F28F21/081 ,  B22D13/02 ,  C10G9/203 ,  F28D2021/0059 ,  F28F1/40

    摘要： A profiled tube (50b) comprising a high carbon content alloy (greater than 0.3%), superalloy or other high creep strength material, has a fluted bore with internal fins (52b) and intervening valleys or troughs (56b). Such a tube is made by centrifugal casting and subsequent electrochemical machining by drawing of an electrode (104) along the tube while at the same time passing electrolyte along the tube and around the electrode and also applying an electrical current between the tube and electrode, so that material of the tube passes into solution in the electrolyte.The electrode (104) has the same profile as the end-profile required in the tube (80) but has an inclined working face (124). An electrode rod (92) drives the electrode from one end mounting means (82) to another (84), each of which support the tube (80) and supply/exhaust electrolytic solution. The electrolyte is preferably sodium nitrate, although an acid based system is feasible.

    摘要翻译： 包含高碳含量合金（大于0.3％），超合金或其他高蠕变强度材料的成型管（50b）具有带有内部翅片（52b）和中间的谷或槽（56b）的槽形孔。 这样的管是通过离心铸造和随后的电化学加工制造的，其中沿着管拉动电极（104），同时沿着管和电极周围通过电解质并且还在管和电极之间施加电流，因此 该管的材料进入电解液中的溶液。 电极（104）具有与管（80）中所需的端部轮廓相同的轮廓，但具有倾斜的工作面（124）。 电极棒（92）将电极从一端安装装置（82）驱动到另一端（84），每个支撑管（80）和供应/排出电解液。 电解质优选是硝酸钠，尽管基于酸的体系是可行的。

    Centrifugally-cast tube and related method and apparatus for making same
    10.
    发明申请
    Centrifugally-cast tube and related method and apparatus for making same 审中-公开
    离心铸管及其制造方法及装置

    公开(公告)号：US20040079216A1

    公开(公告)日：2004-04-29

    申请号：US10600001

    申请日：2003-06-20

    发明人： Joel Demarest ,  Gilles Verdier

    IPC分类号： B26D003/00

    CPC分类号： B23D37/04 ,  B22D13/02 ,  B23D39/00 ,  B23D43/02 ,  B23D43/04 ,  B23P15/00 ,  F28D2021/0059 ,  F28F1/40 ,  Y10T83/0304 ,  Y10T83/0311 ,  Y10T83/0524 ,  Y10T83/0596 ,  Y10T83/384 ,  Y10T407/1628 ,  Y10T407/1671 ,  Y10T409/400175 ,  Y10T409/40105 ,  Y10T409/40175 ,  Y10T409/4028 ,  Y10T409/402975 ,  Y10T409/40315 ,  Y10T409/404375 ,  Y10T409/4063 ,  Y10T409/4077 ,  Y10T409/503116 ,  Y10T428/12

    摘要： An improved centrifugally-cast tube is provided, along with a related method and apparatus of making the tube. The tube includes a plurality of grooves and bosses that are mechanically machined into an interior surface of the tube, such as by a broaching process. The profile of grooves and bosses may be defined by a plurality of intersecting concave and convex radii. The tube is resistant to creep, carburization and metal dusting. The tube also has an enhanced heat transfer rate, and a desirable surface roughness. A method of making the tube is also provided. The method essentially consists of mechanically deforming the interior surface of the tube by passing a series of cutting inserts on support rings having incrementally-differing dimensions over the interior surface. An apparatus is also provided which includes a telescoping shaft upon which is mounted at least one cutting tool that has a plurality of cutting inserts and is adapted to form a plurality of grooves and bosses in the interior surface of the tube. The grooves and bosses may be straight or spiraled.

    摘要翻译： 提供了一种改进的离心铸管，以及制造该管的相关方法和装置。 该管包括多个槽和凸台，例如通过拉削工艺机械加工到管的内表面中。 凹槽和凸起的轮廓可以由多个相交的凹凸半径限定。 该管耐蠕变，渗碳和金属粉尘。 管也具有增强的传热速率和期望的表面粗糙度。 还提供了制造管的方法。 该方法基本上包括通过将一系列切削刀片通过在内表面上具有递增不同尺寸的支撑环上的机械变形来使管的内表面变形。 还提供了一种装置，其包括伸缩轴，在该装置上安装有至少一个具有多个切削刀片的切削工具，并且适于在管的内表面中形成多个凹槽和凸起。 凹槽和凸起可以是直的或螺旋形的。