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    METHOD FOR THE PRODUCTION OF A SEAMLESS, MULTILAYERED TUBULAR PRODUCT, AND ROUND OR POLYGONAL BLOCK FOR USE IN THIS METHOD
    75.
    发明申请
    METHOD FOR THE PRODUCTION OF A SEAMLESS, MULTILAYERED TUBULAR PRODUCT, AND ROUND OR POLYGONAL BLOCK FOR USE IN THIS METHOD 审中-公开
    用于生产无缝，多层管状产品的方法，以及用于本方法的圆形或多边形块

    公开(公告)号：US20170009313A1

    公开(公告)日：2017-01-12

    申请号：US15205674

    申请日：2016-07-08

    Applicant: BENTELER STEEL/TUBE GMBH

    Inventor： MARTIN JUNKER ,  THOMAS VIETORIS ,  CHRISTIAN KRONHOLZ ,  ALBERT LORENTZ

    IPC: C21D9/08 ,  C21D8/10

    CPC classification number: C21D9/08 ,  B23K5/16 ,  B23K5/18 ,  B23K9/048 ,  B23K9/232 ,  B23K15/0086 ,  B23K15/0093 ,  B23K26/34 ,  B23K2101/06 ,  B23K2103/04 ,  B23K2103/05 ,  B23K2103/18 ,  B23P15/00 ,  C21D8/10 ,  C21D8/105 ,  C21D9/50 ,  C21D2201/00 ,  C21D2251/02 ,  F16L9/02 ,  F16L9/14

    Abstract: In a method for the production of a seamless, multilayered tubular product, a further layer is applied through hardfacing on a base layer of a round or polygonal block, with the further layer made of a metallic material which is different than a metallic material of the base layer. The round or polygonal block with hardfaced further layer is hot formed to produce a tubular product with reduced wall thickness and outer perimeter in one or more stages. A diffusion layer is established between the base layer and the further layer through heat treatment before hot forming and/or after hot forming, thereby producing a thickness of the diffusion layer of at least 5 μm with the proviso that the thickness of the diffusion layer is 0.1% to 50% of a thickness of the further layer, with the thickness of the further layer being equal to or greater than 100 μm.

    Abstract translation: 在制造无缝多层管状产品的方法中，通过在圆形或多边形块的基底层上的表面硬化施加另外的层，另外的层由金属材料制成，该金属材料与金属材料不同 基层。 具有硬面层的另外的层的圆形或多边形块被热成型以在一个或多个阶段中产生具有减小的壁厚度和外周长的管状产品。 通过热成型前和/或热成型后的热处理，在基底层和另一层之间建立扩散层，由此产生至少5μm的扩散层的厚度，条件是扩散层的厚度为 其余层的厚度的0.1％至50％，其余层的厚度等于或大于100μm。

    R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B-BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET
    77.
    发明申请
    R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B-BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET 审中-公开
    基于R-T-B的稀土磁体颗粒，用于生产基于R-T-B的稀土磁体颗粒和粘结磁体的方法

    公开(公告)号：US20140266525A1

    公开(公告)日：2014-09-18

    申请号：US14205894

    申请日：2014-03-12

    Applicant: TODA KOGYO CORP.

    Inventor： Nobuhiro KATAYAMA ,  Hirofumi KAWASAKI ,  Koichiro MORIMOTO

    IPC: H01F1/06 ,  H01F7/02 ,  H01F41/00

    CPC classification number: H01F1/0573 ,  B22F9/04 ,  B22F2998/10 ,  B22F2999/00 ,  C21D6/00 ,  C21D2201/00 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C2202/02 ,  H01F1/0578 ,  B22F2201/013 ,  B22F1/0085 ,  B22F2201/20 ,  B22F2201/11

    Abstract: An object of the present invention is to enhance a coercive force of magnetic particles by promoting formation of a continuous R-rich grain boundary phase in a crystal grain boundary of a magnetic phase of the particles, and to thereby obtain R-T-B-based rare earth magnet particles further having a high residual magnetic flux density. The present invention relates to production of R-T-B-based rare earth magnet particles capable of exhibiting a high coercive force even when a content of Al therein is reduced, and a high residual magnetic flux density, in which formation of an R-rich grain boundary phase therein can be promoted by heat-treating Al-containing R-T-B-based rare earth magnet particles obtained by HDDR treatment in vacuum or in an Ar atmosphere at a temperature of not lower than 670° C. and not higher than 820° C. for a period of not less than 30 min and not more than 300 min.

    Abstract translation: 本发明的目的是通过促进在粒子的磁性相的晶界中形成连续的富R相的晶界而提高磁性粒子的矫顽力，由此得到RTB系稀土类磁铁 颗粒进一步具有高剩余磁通密度。 本发明涉及即使当其中Al含量降低时也能表现出高矫顽力的RTB型稀土磁体颗粒的生产和高残余磁通密度，其中形成富R晶界相 可以通过在真空中或在Ar气氛中在不低于670℃且不高于820℃的温度下热处理由HDDR处理获得的含有Al的RTB基稀土磁体颗粒来促进其中的 时间不少于30分钟，不超过300分钟。

    COMPONENTS AND PROCESSES OF PRODUCING COMPONENTS WITH REGIONS HAVING DIFFERENT GRAIN STRUCTURES
    78.
    发明申请
    COMPONENTS AND PROCESSES OF PRODUCING COMPONENTS WITH REGIONS HAVING DIFFERENT GRAIN STRUCTURES 有权
    生产具有不同颗粒结构区域的组件的组成部分和方法

    公开(公告)号：US20120305143A1

    公开(公告)日：2012-12-06

    申请号：US13152898

    申请日：2011-06-03

    Applicant: Andrew Ezekiel Wessman ,  David Paul Mourer ,  Daniel Yeuching Wei

    Inventor： Andrew Ezekiel Wessman ,  David Paul Mourer ,  Daniel Yeuching Wei

    IPC: C22F1/10 ,  C21D9/00 ,  B32B15/01

    CPC classification number: B23P15/006 ,  B21K1/32 ,  C21D1/26 ,  C21D7/13 ,  C21D9/32 ,  C21D2201/00 ,  C22C19/03 ,  F01D5/02 ,  F05D2230/25

    Abstract: Processes for fabricating components to have two or more regions with different grain structures, and components produced by such processes. The processes entail performing at least one forging step on a preform to produce a profile having at least a first portion corresponding to the first region of the component. The preform is formed of a precipitation-strengthened alloy having a solvus temperature, and the at least one forging step comprises a nonfinal forging step performed at a first strain rate and at a first subsolvus temperature that is below the solvus temperature of the alloy. A subsequent forging step is performed on the profile to produce a final profile comprising the first portion and a second portion corresponding to the second region of the component. The subsequent forging step is performed at a strain rate and at a subsequent subsolvus temperature, wherein at least one of the subsequent strain rate and subsequent subsolvus temperature is either higher or lower than the first strain rate or first subsolvus temperature. A heat treatment is then performed on the final profile to cause grain growth, wherein the first portion of the final profile has a different grain size than the second portion.

    Abstract translation: 用于制造具有两个或更多个具有不同晶粒结构的区域的部件的工艺以及由这些工艺生产的部件。 该过程需要在预制件上执行至少一个锻造步骤以产生至少具有对应于部件的第一区域的第一部分的轮廓。 预成型体由具有固溶温度的沉淀强化合金形成，并且所述至少一个锻造步骤包括以低于合金的固溶温度的第一应变速率和第一副溶液温度下进行的非正式锻造步骤。 在轮廓上执行随后的锻造步骤以产生包括第一部分和对应于部件的第二区域的第二部分的最终轮廓。 随后的锻造步骤以应变速率和随后的子体温度进行，其中随后的应变速率和随后的子体温度中的至少一个要么高于或低于第一应变速率或者第一子体温度。 然后对最终轮廓进行热处理以引起晶粒生长，其中最终轮廓的第一部分具有与第二部分不同的晶粒尺寸。

    Ultrasonic machining and reconfiguration of braking surfaces
    80.
    发明授权
    Ultrasonic machining and reconfiguration of braking surfaces 有权

    公开(公告)号：US07032725B2

    公开(公告)日：2006-04-25

    申请号：US10797016

    申请日：2004-03-11

    Applicant: Efim S. Statnikov

    Inventor： Efim S. Statnikov

    IPC: F16D65/10

    CPC classification number: B23P9/04 ,  B23K9/32 ,  B23K13/00 ,  C21D7/04 ,  C21D9/50 ,  C21D10/00 ,  C21D2201/00

    Abstract: The novel methods, apparatus and reworked rotary braking surface product, for example those exhibited on interior cylindrical braking surfaces of a cast iron brake drum, serve to replace manufacturing defects exhibiting residual tensile stresses and outwardly directed tool marks with smooth compressed braking surfaces in a final manufacturing stage. The plastically deformed surface shape with reduced roughness and surface irregularities furthermore presents improved braking strength above the yield point and approaching the ultimate material strength of the base drum material. An ultrasonic transducer drives individual freely moving impact elements of a set at frequencies up to 55 kHz into the braking surface to effect plastic deformation at surface and sub-surface layers. Physically, the small sized ultrasonic transducer is inserted into a drum cylinder and driven by a lathe producing relative motion between the braking surface and the ultrasonically vibrating impact elements scanning only the braking surface in a readily controlled ultrasonic impact machining cycle for attaining specified braking surface performance.

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