METHODS OF MODIFYING SURFACES OF DIAMOND PARTICLES, AND RELATED DIAMOND PARTICLES AND EARTH-BORING TOOLS
    1.
    发明申请
    METHODS OF MODIFYING SURFACES OF DIAMOND PARTICLES, AND RELATED DIAMOND PARTICLES AND EARTH-BORING TOOLS 审中-公开
    修改金刚石颗粒表面以及相关的金刚石颗粒和土工工具的方法

    公开(公告)号:WO2017205672A1

    公开(公告)日:2017-11-30

    申请号:PCT/US2017/034550

    申请日:2017-05-25

    IPC分类号: E21B10/54 E21B10/42

    摘要: A method of modifying surfaces of diamond particles comprises forming spinodal alloy coatings over discrete diamond particles, thermally treating the spinodal alloy coatings to form modified coatings each independently exhibiting a reactive metal phase and a substantially non-reactive metal phase, and etching surfaces of the discrete diamond particles with at least one reactive metal of the reactive metal phase of the modified coatings. Diamond particles and earth-boring tools are also described.

    摘要翻译: 修改金刚石颗粒表面的方法包括在不连续的金刚石颗粒上形成调幅合金涂层,对旋节合金涂层进行热处理以形成改性涂层,所述改性涂层各自独立地表现出反应性金属相和基本上不反应的金属 以及用所述改性涂层的反应性金属相的至少一种活性金属蚀刻离散金刚石颗粒的表面。 还介绍了钻石颗粒和钻地工具。

    MULTI-CHAMFER CUTTING ELEMENTS HAVING A SHAPED CUTTING FACE, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS
    2.
    发明申请
    MULTI-CHAMFER CUTTING ELEMENTS HAVING A SHAPED CUTTING FACE, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS 审中-公开
    具有形状切割面的多切割切割元件,包括这种切割元件的接地工具及相关方法

    公开(公告)号:WO2016040257A1

    公开(公告)日:2016-03-17

    申请号:PCT/US2015/048840

    申请日:2015-09-08

    IPC分类号: E21B10/42 E21B10/43

    摘要: A cutting element for an earth-boring tool includes a substrate and volume of superabrasive material positioned on the substrate. The volume of superabrasive material includes a cutting face having at least one recess extending into the volume of superabrasive material and/or at least one protrusion extending outward from the volume of superabrasive material. The volume of superabrasive material includes a first chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the first chamfer surface is located proximate a cutting edge of the volume of superabrasive material. A radial width of the first chamfer surface is between about 0.002 inch and about 0.045 inch. The volume of superabrasive material also includes a second chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the second chamfer surface is located adjacent the radially innermost edge of the first chamfer surface.

    摘要翻译: 用于钻孔工具的切割元件包括基底和位于基底上的超级磨料的体积。 超级磨料材料的体积包括切割面,该切割面具有至少一个延伸到超硬磨料材料体积的凹部和/或从该超级磨料材料的体积向外延伸的至少一个凸起。 超级磨料的体积包括具有周缘和径向最内边缘的第一倒角表面。 第一倒角表面的外围边缘位于超硬磨料材料体积的切割边缘附近。 第一倒角表面的径向宽度在约0.002英寸至约0.045英寸之间。 超级磨料的体积还包括具有周边边缘和径向最内边缘的第二倒角表面。 第二倒角表面的周缘位于第一倒角表面的径向最内边缘附近。

    METHODS OF FORMING POLYCRYSTALLINE COMPACTS AND RESULTING COMPACTS
    5.
    发明申请
    METHODS OF FORMING POLYCRYSTALLINE COMPACTS AND RESULTING COMPACTS 审中-公开
    形成多晶体致密化物和结果致密物的方法

    公开(公告)号:WO2013040292A2

    公开(公告)日:2013-03-21

    申请号:PCT/US2012/055293

    申请日:2012-09-14

    摘要: Methods for forming cutting elements, methods for forming polycrystalline compacts, and related polycrystalline compacts are disclosed. Grains of a hard material are subjected to a high pressure, high temperature process to form a polycrystalline compact. Inclusion of at least one relatively quick spike in system pressure or temperature during an otherwise plateaued temperature or pressure stage accommodates formation of inter-granular bonds between the grains. The brevity of the peak stage may avoid undesirable grain growth. Embodiments of the methods may also include at least one of oscillating at least one system condition (e.g., pressure, temperature) and subjecting the grains to ultrasonic or mechanical vibrations. A resulting polycrystalline compact may include a high density of inter-granularly bonded hard material with a minimized amount of catalyst material, and may provide improved thermal stability, wear resistance, toughness, and behavior during use of a cutting element incorporating the polycrystalline compact.

    摘要翻译: 公开了形成切割元件的方法,形成多晶复合片的方法以及相关的多晶复合片。 硬质材料的晶粒经受高压,高温过程以形成多晶复合片。 在另外的稳定温度或压力阶段期间包含至少一个相对快的系统压力或温度峰值适应晶粒之间颗粒间结合的形成。 峰值阶段的简短可以避免不希望的晶粒生长。 该方法的实施例还可以包括使至少一个系统状况(例如,压力,温度)振荡和使谷粒经受超声波或机械振动中的至少一个。 所得到的多晶复合片可以包括具有最小量的催化剂材料的高密度颗粒间粘合的硬质材料,并且可以在使用包含多晶复合片的切割元件期间提供改进的热稳定性,耐磨性,韧性和行为。 / p>

    CUTTING ELEMENTS, EARTH-BORING TOOLS INCORPORATING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING SUCH CUTTING ELEMENTS
    6.
    发明申请
    CUTTING ELEMENTS, EARTH-BORING TOOLS INCORPORATING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING SUCH CUTTING ELEMENTS 审中-公开
    包含这些切割元件的切割元件,接地工具以及形成这种切割元件的方法

    公开(公告)号:WO2012058045A2

    公开(公告)日:2012-05-03

    申请号:PCT/US2011/056556

    申请日:2011-10-17

    摘要: Cutting elements comprise a substrate, a polycrystalline table, and an asymmetric interface feature. The interface feature comprises a shape that is reflectively asymmetric about at least two planes defined by x, y, and z axes of a Cartesian coordinate system defined to align a z axis of the coordinate system with the central axis of the substrate and to locate a center of the coordinate system at a midpoint along an axial height of the asymmetric interface feature. Methods of forming a cutting element comprise: forming an asymmetric interface feature at an end of a substrate; distributing a plurality of superhard particles on the substrate over the asymmetric interface feature in a mold; and bonding the superhard particles in the mold to form a polycrystalline table attached to the substrate.

    摘要翻译: 切割元件包括基底,多晶台和非对称界面特征。 界面特征包括对由笛卡尔坐标系的x,y和z轴限定的至少两个平面反射不对称的形状,所述笛卡尔坐标系定义为将坐标系的z轴与基板的中心轴对准,并且定位中心 的坐标系在沿着非对称界面特征的轴向高度的中点处。 形成切割元件的方法包括:在基底的末端形成非对称界面特征; 在模具中的非对称界面特征上在基底上分布多个超硬颗粒; 并且将超硬颗粒粘合在模具中以形成附着到基底的多晶台。

    CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS AND RELATED METHODS
    7.
    发明申请
    CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS AND RELATED METHODS 审中-公开
    用于接地工具的切割元件,包括这种切割元件的接地工具及相关方法

    公开(公告)号:WO2011133850A2

    公开(公告)日:2011-10-27

    申请号:PCT/US2011/033559

    申请日:2011-04-22

    IPC分类号: E21B10/50 B23P9/00 B24D3/00

    摘要: Cutting elements, earth-boring drill bits having such cutting elements and related methods are described herein. In some embodiments, a cutting element for an earth-boring tool may include a diamond table having an indentation in a cutting face thereof and a shaped feature in a substrate at the interface between the diamond table and the substrate, the shaped feature corresponding to the indentation in the cutting face of the diamond table. In further embodiments, a cutting element for an earth-boring tool may include a sacrificial structure positioned within an indentation in a diamond table. In additional embodiments, a method of forming a cutting element may include positioning a sacrificial structure in a mold, positioning a powdered precursor material over the sacrificial structure, and pressing and sintering the powdered precursor material to form a diamond table having an indentation in a cutting face formed by the sacrificial structure.

    摘要翻译: 这里描述了切割元件,具有这种切割元件的钻孔钻头和相关方法。 在一些实施例中,用于钻孔工具的切割元件可以包括在其切割面中具有凹陷的金刚石台面和在金刚石台和基底之间的界面处的基底中的成形特征,所述成形特征对应于 在钻石桌子的切割面的凹痕。 在另外的实施例中,用于钻孔工具的切割元件可以包括定位在钻石台中的凹陷内的牺牲结构。 在另外的实施例中,形成切割元件的方法可以包括将牺牲结构定位在模具中,将粉末状前体材料定位在牺牲结构上方,以及压制和烧结粉状前体材料以形成具有切割中的凹陷的金刚石台 由牺牲结构形成的面。

    CUTTING ELEMENTS LEACHED TO DIFFERENT DEPTHS LOCATED IN DIFFERENT REGIONS OF AN EARTH-BORING TOOL AND RELATED METHODS
    8.
    发明申请
    CUTTING ELEMENTS LEACHED TO DIFFERENT DEPTHS LOCATED IN DIFFERENT REGIONS OF AN EARTH-BORING TOOL AND RELATED METHODS 审中-公开
    切割元素浸在位于不同地区的不同地区的不同深度和相关方法

    公开(公告)号:WO2014134428A1

    公开(公告)日:2014-09-04

    申请号:PCT/US2014/019380

    申请日:2014-02-28

    IPC分类号: E21B10/46

    CPC分类号: E21B10/567 E21B10/5735

    摘要: Earth-boring tools may comprise a body comprising a first region and a second region. The first region may be located closer to a rotational axis of the body than the second region. A first cutting element may be located in the first region and a second cutting element may be located in the second region. A first polycrystalline table of the first cutting element may be substantially free of catalyst material to a first depth and a second polycrystalline table of the second cutting element may be substantially free of catalyst material to a second, greater depth.

    摘要翻译: 钻孔工具可以包括包括第一区域和第二区域的主体。 第一区域可以比第二区域更靠近身体的旋转轴线。 第一切割元件可以位于第一区域中,并且第二切割元件可以位于第二区域中。 第一切割元件的第一多晶台可以基本上没有催化剂材料到第一深度,并且第二切割元件的第二多晶台可以基本上没有催化剂材料到第二更深的深度。

    POLYCRYSTALLINE COMPACTS HAVING DIFFERING REGIONS THEREIN, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS
    9.
    发明申请
    POLYCRYSTALLINE COMPACTS HAVING DIFFERING REGIONS THEREIN, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS 审中-公开
    在其中具有不同区域的多晶体致密物,包括这种致密物的切削元件和包括土工具,以及形成这种致密物的方法

    公开(公告)号:WO2012099716A2

    公开(公告)日:2012-07-26

    申请号:PCT/US2012/020182

    申请日:2012-01-04

    摘要: Polycrystalline compacts include a hard polycrystalline material comprising first and second regions. The first region comprises a first plurality of grains of hard material having a first average grain size, and a second plurality of grains of hard material having a second average grain size smaller than the first average grain size. The first region comprises catalyst material disposed in interstitial spaces between inter-bonded grains of hard material. Such interstitial spaces between grains of the hard material in the second region are at least substantially free of catalyst material. In some embodiments, the first region comprises a plurality of nanograins of the hard material. Cutting elements and earth-boring tools include such polycrystalline compacts. Methods of forming such polycrystalline compacts include removing catalyst material from interstitial spaces within a second region of a polycrystalline compact without entirely removing catalyst material from interstitial spaces within a first region of the compact.

    摘要翻译: 多晶复合片包括包含第一和第二区域的硬质多晶材料。 第一区域包括具有第一平均晶粒尺寸的第一多个硬质材料晶粒和具有小于第一平均晶粒尺寸的第二平均晶粒尺寸的第二多个硬质材料晶粒。 第一区域包括布置在硬质材料的相互键合的晶粒之间的间隙中的催化剂材料。 第二区域中硬质材料颗粒之间的这种间隙空间至少基本上不含催化剂材料。 在一些实施例中,第一区域包括硬质材料的多个纳米晶粒。 切割元件和钻地工具包括这种多晶复合片。 形成这种多晶复合片的方法包括从多晶复合片的第二区域内的间隙空间除去催化剂材料,而不从催化剂的第一区域内的间隙空间完全除去催化剂材料。