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    Cemented carbide body and method
    4.
    发明公开
    Cemented carbide body and method 审中-公开
    ZementierterCarbidkörperund Verfahren

    公开(公告)号：EP2184122A1

    公开(公告)日：2010-05-12

    申请号：EP08168848.3

    申请日：2008-11-11

    申请人： Sandvik Intellectual Property AB

    发明人： Arvanitidis, Ioannis

    IPC分类号： B22F7/06 ,  C22C29/08 ,  C22C1/05

    CPC分类号： C22C29/08 ,  B22F7/06 ,  B22F2999/00 ,  C22C1/051 ,  Y10T428/12014 ,  Y10T428/24942 ,  Y10T428/24983 ,  Y10T428/252 ,  B22F2207/01 ,  B22F2207/13 ,  B22F3/22

    摘要： The present invention relates to a method of producing a cemented carbide body comprising providing: (1) a grain refiner compound comprising a grain refiner and carbon and/or nitrogen, and, (2) a grain growth promoter, on at least one portion of the surface of a compact of a WC-based starting material comprising one or more hard-phase components and a binder, and then sintering the compact. the invention also relates to a cemented carbide body comprising a WC-based hard phase and a binder phase, wherein at least one part of an intermediate surface zone has a lower average binder content than a part further into the body, and at least one part of an upper surface zone has in average a larger average WC grain size than the intermediate surface zone. The cemented carbide body can be used as a cutting tool insert for metal machining, an insert for a mining tool, or a coldforming tool.

    摘要翻译： 本发明涉及一种生产硬质合金体的方法，包括提供：（1）包含晶粒细化剂和碳和/或氮的晶粒细化剂化合物，和（2）晶粒生长促进剂，在至少一部分 包含一种或多种硬相组分和粘合剂的WC基原料的压块的表面，然后烧结该压块。 本发明还涉及包含WC基硬相和粘结相的硬质合金体，其中中间表面区域的至少一部分具有比进一步进入体内的部分更低的平均粘合剂含量，以及至少一部分 上表面区域平均具有比中间表面区域更大的平均WC晶粒尺寸。 硬质合金体可用作金属加工用切削刀片，用于采矿工具的刀片或冷成型工具。

    MULTI-DENSITY, MULTI-PROPERTY TURBINE COMPONENT
    8.
    发明公开
    MULTI-DENSITY, MULTI-PROPERTY TURBINE COMPONENT 审中-公开
    TURBINENKOMPONENTE MIT MEHREREN DICHTEN UND EIGENSCHAFTEN

    公开(公告)号：EP3055091A4

    公开(公告)日：2017-07-05

    申请号：EP14851677

    申请日：2014-09-25

    申请人： UNITED TECHNOLOGIES CORP

    发明人： GREGG SHAWN J ,  STAROSELSKY ALEXANDER ,  SRINIVASAN GAJAWALLI V

    IPC分类号： B22F3/105 ,  B22F3/11 ,  B22F5/04 ,  F01D5/28

    CPC分类号： B23K26/342 ,  B22F3/1055 ,  B22F3/11 ,  B22F5/04 ,  B22F2207/13 ,  B22F2207/17 ,  B23K26/0006 ,  B23K26/12 ,  B23K26/144 ,  B23K2203/02 ,  B23K2203/08 ,  B23K2203/14 ,  B33Y10/00 ,  B33Y80/00 ,  F01D5/18 ,  F01D5/28 ,  Y02P10/295

    摘要： A method of forming a metal component having different regions containing different grain sizes and in porosities is by additive manufacturing. The method includes spreading a layer of starting powder on a temperature controlled moveable platform in a heated chamber with atmosphere and temperature control. Selected areas of the powder are melted and solidified with a computer controlled focused energy beam. The cooled platform is then indexed down and the process repeated. The grain size of the melted and solidified region can be controlled by the cooling rate during solidification which, in turn is controlled by the temperature of the chamber and the temperature of the cooled moveable platform.

    摘要翻译： 形成具有不同粒度和孔隙度的不同区域的金属组分的方法是通过增材制造。 该方法包括在具有大气和温度控制的加热室中的温度控制的可移动平台上散布一层起始粉末。 选定的粉末区域通过计算机控制的聚焦能量束熔化并固化。 然后将冷却的平台索引下来并重复该过程。 熔化和凝固区域的晶粒尺寸可以通过凝固过程中的冷却速率来控制，凝固过程中的冷却速度又由腔室的温度和冷却的可移动平台的温度来控制。