Polycrystalline super hard construction and a method for making same

    公开(公告)号:US10221629B2

    公开(公告)日:2019-03-05

    申请号:US14440795

    申请日:2013-11-05

    摘要: A polycrystalline super hard construction has a body of PCD material and a plurality of interstitial regions between inter-bonded diamond grains forming the PCD material. The body also has a first region substantially free of a solvent/catalyzing material which extends a depth from a working surface into the body of PCD material. A second region remote from the working surface includes solvent/catalyzing material in a plurality of the interstitial regions. A chamfer extends between the working surface and a peripheral side surface of the body of PCD material. The chamfer has a height which is the length along a plane perpendicular to the plane along which the working surface extends between the point of intersection of the chamfer with the working surface and the point of intersection of the chamfer and the peripheral side surface of the body of PCD material. The depth of the first region is greater than the height of the chamfer. A first length along a plane extending from the point of intersection of the chamfer and the peripheral side edge of the PCD body at an angle of between around 65 to 75 degrees to the interface between the first and second regions is between around 60% to around 300% of the depth of the first region.

    Polishing composition
    6.
    发明授权
    Polishing composition 有权
    抛光组成

    公开(公告)号:US09157011B2

    公开(公告)日:2015-10-13

    申请号:US13818554

    申请日:2011-08-25

    摘要: A polishing composition contains colloidal silica. The colloidal silica satisfies the expression A×D×E×F≧350,000 where “A” denotes the average aspect ratio (dimensionless) of the colloidal silica, “D” denotes the average particle diameter (units: nm) of the colloidal silica, “E” denotes the standard deviation of the particle size (units: nm) of the colloidal silica, and “F” denotes the volume fraction (units: %) of particles having a diameter of 1 to 300 nm in the colloidal silica. The volume fraction of particles having a diameter of 1 to 300 nm in the colloidal silica is 90% or greater.

    摘要翻译: 抛光组合物含有胶体二氧化硅。 胶体二氧化硅满足A×D×E×F≥350,000的表达式,其中“A”表示胶体二氧化硅的平均纵横比(无量纲),“D”表示胶体二氧化硅的平均粒径(单位:nm) “E”表示胶体二氧化硅的粒径(单位:nm)的标准偏差,“F”表示胶体二氧化硅中直径为1〜300nm的粒子的体积分数(单位:%)。 胶体二氧化硅中直径为1〜300nm的粒子的体积分率为90%以上。

    Polycrystalline ultra-hard material with microstructure substantially free of catalyst material eruptions
    7.
    发明授权
    Polycrystalline ultra-hard material with microstructure substantially free of catalyst material eruptions 有权
    具有显微组织的多晶超硬材料基本上不含催化剂材料的爆发

    公开(公告)号:US08986840B2

    公开(公告)日:2015-03-24

    申请号:US11612272

    申请日:2006-12-18

    摘要: Polycrystalline ultra-hard materials and compacts comprise an ultra-hard material body having a polycrystalline matrix of bonded together ultra-hard particles, e.g., diamond crystals, and a catalyst material disposed in interstitial regions within the polycrystalline matrix. The material microstructure is substantially free of localized concentrations, regions or volumes of the catalyst material or other substrate constituent. The body can include a region extending a depth from a body working surface and that is substantially free of the catalyst material. The compact is produced using a multi-stage HPHT process, e.g., comprising two HPHT process conditions, wherein during a first stage HPHT process the catalyst material is melted and only partially infiltrates the precursor ultra-hard material, and during a second stage further catalyst material infiltrates the precursor ultra-hard material to produce a fully sintered compact.

    摘要翻译: 多晶超硬材料和压块包括超硬材料体,其具有将超硬颗粒(例如金刚石晶体)结合的多晶基体和设置在多晶基质内的间隙区域中的催化剂材料。 材料微结构基本上不含催化剂材料或其它底物成分的局部浓度,区域或体积。 主体可以包括从主体工作表面延伸深度并且基本上不含催化剂材料的区域。 使用多阶段HPHT方法制备压块,例如包括两个HPHT工艺条件,其中在第一阶段HPHT工艺期间,催化剂材料熔化并且仅部分地渗透前体超硬材料,并且在第二阶段期间还有催化剂 材料渗透前体超硬材料以产生完全烧结的压块。

    Deep leach pressure vessel for shear cutters
    9.
    发明授权
    Deep leach pressure vessel for shear cutters 有权
    用于剪切机的深浸压力容器

    公开(公告)号:US08932377B2

    公开(公告)日:2015-01-13

    申请号:US13409938

    申请日:2012-03-01

    摘要: A system for producing thermally stable cutting elements may include a heat source, a pressure vessel, at least one polycrystalline diamond body attached to a carbide substrate, and a leaching agent is disclosed, wherein the heat source includes a container comprising at least one receiving mechanism and at least one retention mechanism, and wherein the carbide substrate is disposed in the at least one receiving mechanism of the pressure vessel, and wherein the leaching agent is disposed in the pressure vessel, and wherein the leaching agent removes the catalyzing material from the interstitial spaces interposed between the diamond particles of the at least one polycrystalline diamond body, and wherein the at least one retention mechanism of the pressure vessel seals at least a portion of the carbide substrate into the at least one receiving mechanism and prevents the leaching agent from contacting at least a portion of the carbide substrate.

    摘要翻译: 公开了一种用于生产热稳定的切割元件的系统,其包括热源,压力容器,连接到碳化物基底的至少一个多晶金刚石体和浸出剂,其中所述热源包括容器,所述容器包括至少一个接收机构 以及至少一个保持机构,并且其中所述碳化物基底设置在所述压力容器的所述至少一个接收机构中,并且其中所述浸出剂设置在所述压力容器中,并且其中所述浸出剂从所述间隙中除去所述催化材料 介于所述至少一个多晶金刚石体的所述金刚石颗粒之间的空间,并且其中所述压力容器的所述至少一个保持机构将所述碳化物衬底的至少一部分密封到所述至少一个接收机构中并防止所述浸出剂接触 至少一部分碳化物衬底。

    Methods of forming inserts and earth-boring tools
    10.
    发明授权
    Methods of forming inserts and earth-boring tools 有权
    形成刀片和钻孔工具的方法

    公开(公告)号:US08911522B2

    公开(公告)日:2014-12-16

    申请号:US13176363

    申请日:2011-07-05

    CPC分类号: E21B10/46 B24D99/005

    摘要: Methods of forming inserts for earth-boring tools include providing a material in a pattern adjacent a strip, arranging a plurality of superabrasive particles proximate the pattern, and securing at least some of the plurality of superabrasive particles to the strip. The material is configured to attract or secure the plurality of superabrasive particles. Some methods may include imparting like charges to each of a plurality of superabrasive particles, placing the plurality of superabrasive particles over a strip, and securing the superabrasive particles to the strip. In some methods, a first plurality of superabrasive particles may be placed in an array between a first strip and a second strip. A second plurality of superabrasive particles may be placed in an array between the second strip and a third strip. Methods of forming earth-boring rotary drill bits include forming an insert and securing the insert to a body of the bit.

    摘要翻译: 用于钻孔工具的成形刀片的方法包括提供邻近条带的图案中的材料,将多个超级磨料颗粒布置在靠近图案的位置,并将多个超研磨颗粒中的至少一些固定到条带上。 该材料构造成吸引或固定多个超研磨颗粒。 一些方法可以包括向多个超研磨颗粒中的每一个施加相同的电荷,将多个超研磨颗粒放置在条上,以及将超研磨颗粒固定到带上。 在一些方法中,可以将第一组多个超级磨料颗粒放置在第一条带和第二条带之间的阵列中。 可以在第二条带和第三条带之间的阵列中放置第二多个超级磨料颗粒。 形成钻孔旋转钻头的方法包括形成插入件并将插入件固定到钻头的主体。