METHOD OF BORONIZING SINTERED BODIES AND TOOLS FOR COLD FORMING OPERATIONS AND HOLLOW WEAR PARTS WITH BORONIZED SINTERED BODIES

    公开(公告)号:WO2020088748A1

    公开(公告)日:2020-05-07

    申请号:PCT/EP2018/079759

    申请日:2018-10-30

    Abstract: A wear resistant, sintered body (12, 70) is made of a binderless carbide, cermet or cemented carbide, e.g., WC, W2C and/or eta-phase, with a grain size less than 6.0 μm, and less than 6% binder phase (e.g., Co-Ni-Fe). At least some working surfaces (42, 86) of the sintered body (12, 70) are surface treated (130) with a boron yielding method including applying (132) a low viscosity liquid medium having boron or aluminum content and heating (134) at 1200 °C to 1450 °C under a pressure less than atmospheric pressure or a hydrogen containing atmosphere to from a hardness gradient with an increased hardness of the treated working surfaces (42, 86) of at least 50 to 200 HV5 and favorable compressive stresses in a surface zone that gives a tougher working surfaces of the boronized sintered bodies.

    A COATED CUTTING TOOL
    6.
    发明申请

    公开(公告)号:WO2018162558A1

    公开(公告)日:2018-09-13

    申请号:PCT/EP2018/055606

    申请日:2018-03-07

    Abstract: The present invention relates to a coated cutting tool comprising a substrate of cemented carbide and a coating, the cemented carbide comprising WC and a binder phase comprising one or more of Co, Fe and Ni, the carbon content in the cemented carbide is a substoichiometric carbon content SCC wherein -0.13 wt%≤SCC

    SUPER HARD CONSTRUCTIONS & METHODS OF MAKING SAME
    9.
    发明申请
    SUPER HARD CONSTRUCTIONS & METHODS OF MAKING SAME 审中-公开
    超硬结构及其制造方法

    公开(公告)号:WO2017114675A1

    公开(公告)日:2017-07-06

    申请号:PCT/EP2016/081665

    申请日:2016-12-19

    Abstract: A method of forming a super hard polycrystalline construction comprises forming a pre-composite assembly comprising a skeleton formed of a first material, and a region of super hard particles or grains, the skeleton having one or more voids therein, the super hard particles being located in one or more of said voids in the skeleton and treating the pre-composite assembly in the presence of a catalyst/solvent material for the super hard particles or grains at an ultra-high pressure of around 5 GPa or greater and a temperature to sinter together the super hard particles or grains to form a body of polycrystalline super hard material comprising a first region of super hard particles or grains, and an interpenetrating second region of a second material, the second material forming a coating on at least a portion of the first region, the second material comprising any one or more of the first material, or an oxide, a carbide, or a nitride of the first material.

    Abstract translation: 形成超硬多晶结构的方法包括形成预复合组件,所述预复合组件包括由第一材料形成的骨架和超硬颗粒或晶粒的区域,所述骨架具有一个或多个空隙 其中超硬颗粒位于骨架中的一个或多个所述空隙中,并且在用于超硬颗粒或颗粒的催化剂/溶剂材料存在下以约5的超高压处理预复合材料组件 GPa或更高的温度以及将超硬颗粒或晶粒烧结在一起以形成多晶超硬材料主体的温度,所述多晶超超硬材料包括超硬颗粒或颗粒的第一区域和第二材料的互穿第二区域,第二材料形成 涂覆在第一区域的至少一部分上,第二材料包括第一材料或第一材料的氧化物,碳化物或氮化物中的任何一种或多种。

    COMPOSITE SINTERED POWDER METAL ARTICLES
    10.
    发明申请
    COMPOSITE SINTERED POWDER METAL ARTICLES 审中-公开
    复合烧结粉末金属制品

    公开(公告)号:WO2014018235A8

    公开(公告)日:2014-08-14

    申请号:PCT/US2013049009

    申请日:2013-07-02

    Applicant: KENNAMETAL INC

    Abstract: A composite sintered powder metal article including a first region including a cemented hard particle material such as, for example, cemented carbide. The article includes a second region including: a metallic material selected from a steel, nickel, a nickel alloy, titanium, a titanium alloy, molybdenum, a molybdenum alloy, cobalt, a cobalt alloy, tungsten, a tungsten alloy; and from 0 up to 30 percent by volume of hard particles. The first region is metallurgically bonded to the second region, and each of the first region and the second region has a thickness of greater than 100 microns. The second region comprises at least one mechanical attachment feature so that the composite sintered powder metal article can be attached to another article. The article comprises one of an earth boring article, a metalcutting tool, a metalforming tool, a woodworking tool, and a wear article.

    Abstract translation: 一种复合烧结粉末金属制品,其包括第一区域,该第一区域包括例如硬质合金的粘结硬质颗粒材料。 该制品包括第二区域,其包括:选自钢,镍,镍合金,钛,钛合金,钼,钼合金,钴,钴合金,钨,钨合金的金属材料; 和0至30体积%的硬颗粒。 第一区域冶金地结合到第二区域,并且第一区域和第二区域中的每一个具有大于100微米的厚度。 第二区域包括至少一个机械附接特征,使得复合烧结粉末金属制品可以附着到另一个制品上。 该制品包括镗孔制品,金属切削工具,金属成形工具,木工工具和磨损制品中的一种。

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