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    Polycrystalline diamond compacts including at least one transition layer and methods for stress management in polycrsystalline diamond compacts
    51.
    发明授权
    Polycrystalline diamond compacts including at least one transition layer and methods for stress management in polycrsystalline diamond compacts 有权
    包括至少一个过渡层的多晶金刚石压块和多晶金刚石压块中的应力管理方法

    公开(公告)号：US08727046B2

    公开(公告)日：2014-05-20

    申请号：US13087775

    申请日：2011-04-15

    申请人： David P. Miess ,  Kenneth E. Bertagnolli ,  Damon B. Crockett ,  Arnold D. Cooper

    发明人： David P. Miess ,  Kenneth E. Bertagnolli ,  Damon B. Crockett ,  Arnold D. Cooper

    IPC分类号： E21B10/36 ,  E21B10/567

    CPC分类号： B24D3/007 ,  B01J3/062 ,  B01J2203/063 ,  B01J2203/0655 ,  B22F2005/001 ,  B24D18/0009 ,  C22C26/00 ,  E21B10/567 ,  E21B10/5735 ,  F16C33/043 ,  F16C2206/04 ,  F16C2352/00

    摘要： Embodiments relate to polycrystalline diamond compacts (“PDCs”) that are less susceptible to liquid metal embrittlement damage due to the use of at least one transition layer between a polycrystalline diamond (“PCD”) layer and a substrate. In an embodiment, a PDC includes a PCD layer, a cemented carbide substrate, and at least one transition layer bonded to the substrate and the PCD layer. The at least one transition layer is formulated with a coefficient of thermal expansion (“CTE”) that is less than a CTE of the substrate and greater than a CTE of the PCD layer. At least a portion of the PCD layer includes diamond grains defining interstitial regions and a metal-solvent catalyst occupying at least a portion of the interstitial regions. The diamond grains and the catalyst collectively exhibit a coercivity of about 115 Oersteds or more and a specific magnetic saturation of about 15 Gauss·cm3/grams or less.

    摘要翻译： 实施例涉及由于在多晶金刚石（“PCD”）层和基底之间使用至少一个过渡层而对液态金属脆化损伤较不敏感的多晶金刚石压块（“PDC”）。 在一个实施例中，PDC包括PCD层，硬质合金基底和结合到基底和PCD层的至少一个过渡层。 所述至少一个过渡层被配制成具有小于衬底的CTE且大于PCD层的CTE的热膨胀系数（“CTE”）。 PCD层的至少一部分包括限定间隙区域的金刚石颗粒和占据间隙区域的至少一部分的金属溶剂催化剂。 金刚石颗粒和催化剂共同表现出约115奥斯特或更高的矫顽磁力和约15高斯·厘米3 /克或更低的特定磁饱和度。

    Method for applying hardfacing material to a steel bodied bit and bit formed by such method
    55.
    发明授权
    Method for applying hardfacing material to a steel bodied bit and bit formed by such method 有权
    将表面硬化材料施加到通过这种方法形成的钢体位和钻头的方法

    公开(公告)号：US06568491B1

    公开(公告)日：2003-05-27

    申请号：US09873912

    申请日：2001-06-04

    申请人： Oliver Matthews, III ,  David P. Miess

    发明人： Oliver Matthews, III ,  David P. Miess

    IPC分类号： E21B1008

    CPC分类号： E21B10/55

    摘要： A graphite or silicate plug is coated with a refractory metal and positioned in the cutter pocket of a steel bodied bit as molten hardfacing material is applied to the bit surface under high temperature conditions. The refractory metal cooperates with the hardfacing material to act as a wetting agent that draws the hardfacing material into intimate contact with the body of the displacement plug. The plug is removed leaving a composite pocket opening formed by the steel body and the hardfacing material. A PDC cutter inserted into the composite pocket opening closely adheres to the sides of the opening to reduce the gap between the cutter and the hardfacing material to hereby minimize the effects of erosion in the area of the gap. The wetting material on the displacement plug permits the hardfacing material to flow into and remain in position immediately adjacent the displacement body and in the small surface area between adjacent cutter pockets. The hardfacing material also cooperates with the-steel pocket to increase the surface area of the pocket recess that provides additional structural support to the cutter to improve the stability and retention of the cutter in the bit. The refractory metal may preferably be molybdenum that is applied in a thin layer deposited by a plasma coating technique directly over the body of the graphite displacement body.

    摘要翻译： 用耐火金属涂覆石墨或硅酸盐塞，并将其定位在钢质钻头的刀槽中，因为在高温条件下将熔融的表面硬化材料施加到钻头表面。 难熔金属与表面硬化材料配合起来作为润湿剂，其将表面硬化材料拉紧与位移塞的主体紧密接触。 塞子被移除，留下由钢体和表面硬化材料形成的复合口袋开口。 插入到复合口袋开口中的PDC切割器紧密地附着在开口的侧面上，以减少切割器和表面硬化材料之间的间隙，从而最小化在间隙区域中侵蚀的影响。 位移塞上的润湿材料允许表面硬化材料流入并保持在紧邻位移体的位置和相邻切割器凹穴之间的小表面区域中。 表面硬化材料还与钢袋配合以增加凹槽的表面积，为切割器提供额外的结构支撑，以提高刀具在钻头中的稳定性和保持力。 难熔金属可优选为通过等离子体涂覆技术沉积在薄层上的钼直接在石墨置换体的主体上。

    Superabrasive elements and methods for processing and manufacturing the same using protective layers
    57.
    发明授权
    Superabrasive elements and methods for processing and manufacturing the same using protective layers 有权
    超级磨料元件和使用保护层加工和制造相同方法

    公开(公告)号：US09352447B2

    公开(公告)日：2016-05-31

    申请号：US12555715

    申请日：2009-09-08

    申请人： David P. Miess ,  Andrew E. Dadson

    发明人： David P. Miess ,  Andrew E. Dadson

    IPC分类号： B24B1/00 ,  B24D11/00 ,  B24D3/00 ,  B24D18/00 ,  B24D99/00

    CPC分类号： B24D3/005 ,  B24D18/0009 ,  B24D18/0054 ,  B24D99/005

    摘要： An exemplary method of processing a polycrystalline diamond element is disclosed. According to the method, a protective layer may be formed over only a selected portion of a polycrystalline diamond element. The polycrystalline diamond element may include a polycrystalline diamond table. At least a portion of the polycrystalline diamond element may be exposed to a leaching solution such that the leaching solution contacts an exposed surface region of the polycrystalline diamond table and at least a portion of the protective layer. The protective layer may be substantially impermeable to the leaching solution. An exemplary method of manufacturing a polycrystalline diamond element is also disclosed.

    摘要翻译： 公开了一种处理多晶金刚石元件的示例性方法。 根据该方法，可以仅在多晶金刚石元件的选定部分上形成保护层。 多晶金刚石元件可以包括多晶金刚石台。 多晶金刚石元件的至少一部分可以暴露于浸出溶液，使得浸出溶液接触多晶金刚石台的暴露表面区域和保护层的至少一部分。 保护层可能对浸出溶液基本上是不可渗透的。 还公开了制造多晶金刚石元件的示例性方法。