公开(公告)号：US11014157B2

公开(公告)日：2021-05-25

申请号：US15536875

申请日：2015-11-19

Applicant: Smith International, Inc.

Inventor： Yahua Bao

IPC: E21B10/55 ,  E21B10/567 ,  B22F3/15 ,  C22C1/10 ,  C22C26/00 ,  B22F3/14 ,  B23B27/20 ,  B22F5/00 ,  B22F7/02 ,  C22B3/00

Abstract: A method of making a polycrystalline diamond compact includes forming a first layer of polycrystalline diamond precursor materials comprising diamond particles and a first concentration of catalyst, forming a second layer of polycrystalline diamond precursor materials comprising diamond particles and a second concentration of catalyst, and placing a layer of an infiltrant material in the proximity of the first or the second layer of polycrystalline diamond precursor materials. The second concentration of catalyst is greater than the first concentration of catalyst. The infiltrant material is a catalyst. The first layer and the second layer are sintered under high-pressure high-temperature conditions in the presence of the infiltrant material to form the polycrystalline diamond compact. At least a portion of the catalyst is leached from the polycrystalline diamond compact.

公开(公告)号：US20190275484A1

公开(公告)日：2019-09-12

申请号：US16420696

申请日：2019-05-23

Applicant: Smith International, Inc.

Inventor： Yahua Bao ,  J. Daniel Belnap ,  Anatoliy Garan ,  Michael David France

IPC: B01J3/06 ,  C22C26/00 ,  B22F7/06 ,  B23B27/20 ,  C01B32/26 ,  E21B10/567 ,  B24D18/00

Abstract: A method of forming a polycrystalline diamond body includes mixing a sintering agent with diamond powder to form a premixed layer, the sintering agent including at least one alkaline earth metal carbonate; forming an infiltration layer adjacent to the premixed layer, the infiltration layer including an infiltrant material including at least one alkaline earth metal carbonate; and subjecting the premixed layer and the infiltration layer to high pressure high temperature conditions.

公开(公告)号：US09422770B2

公开(公告)日：2016-08-23

申请号：US13728655

申请日：2012-12-27

Applicant: SMITH INTERNATIONAL, INC.

Inventor： J. Daniel Belnap ,  Yahua Bao ,  Youhe Zhang ,  Liang Zhao ,  Zhijun Lin

IPC: E21B10/46 ,  B01J3/06 ,  B23K31/02 ,  E21B10/567 ,  B23K1/00 ,  B23K1/008 ,  B23K1/19

CPC classification number: E21B10/46 ,  B23K1/0008 ,  B23K1/008 ,  B23K1/19 ,  B23K31/025 ,  E21B10/567

Abstract: A method for making a diamond compact includes pre-heating a diamond body which includes a carbonate catalyst to convert at least a portion of the carbonate catalyst into an oxide, assembling the diamond body and a substrate, providing a braze material between the diamond body and the substrate to form a diamond compact, heating the braze material to melt the braze material and form a braze joint between the diamond body and the substrate, and cooling the braze material after increasing the pressure. A bit having a diamond compact including a carbonate catalyst and a metal oxide mounted thereon.

Abstract translation: 制造金刚石致密体的方法包括预先加热包括碳酸酯催化剂的金刚石体，以将至少一部分碳酸酯催化剂转化为氧化物，组装金刚石体和基体，在金刚石体和金刚石体之间提供钎焊材料， 所述基底形成金刚石致密体，加热所述钎焊材料以熔化所述钎焊材料并在所述金刚石体和所述基底之间形成钎焊接头，以及在增加所述压力之后冷却所述钎焊材料。 有点具有安装在其上的碳酸酯催化剂和金属氧化物的金刚石压块。

公开(公告)号：US11731092B2

公开(公告)日：2023-08-22

申请号：US16420696

申请日：2019-05-23

Applicant: Smith International, Inc.

Inventor： Yahua Bao ,  J. Daniel Belnap ,  Anatoliy Garan ,  Michael David France

IPC: B01J3/06 ,  B24D18/00 ,  B24D3/00 ,  E21B10/567 ,  C01B32/26 ,  B23B27/20 ,  B22F7/06 ,  C22C26/00 ,  B23B27/14 ,  B22F5/00

CPC classification number: B01J3/06 ,  B22F7/062 ,  B23B27/20 ,  B24D18/0009 ,  C01B32/26 ,  C22C26/00 ,  E21B10/567 ,  B22F2005/001 ,  B22F2999/00 ,  B23B27/148 ,  B24D3/00 ,  B22F2999/00 ,  B22F2303/35

Abstract: A method of forming a polycrystalline diamond body includes mixing a sintering agent with diamond powder to form a premixed layer, the sintering agent including at least one alkaline earth metal carbonate; forming an infiltration layer adjacent to the premixed layer, the infiltration layer including an infiltrant material including at least one alkaline earth metal carbonate; and subjecting the premixed layer and the infiltration layer to high pressure high temperature conditions.

公开(公告)号：US11021913B2

公开(公告)日：2021-06-01

申请号：US16061680

申请日：2016-12-14

Applicant: Smith International, Inc.

Inventor： Yahua Bao ,  John Daniel Belnap

IPC: E21B10/42 ,  E21B10/48 ,  E21B10/54 ,  E21B10/55 ,  E21B10/567 ,  E21B10/573 ,  E21B10/58 ,  B23P15/28

Abstract: A cutting bit includes a body, a plurality of blades, and at least one ultrahard insert cast directly into at least one of the plurality of blades. The ultrahard insert is positioned with a rear face directly contacting the blade.

公开(公告)号：US10781643B2

公开(公告)日：2020-09-22

申请号：US16061097

申请日：2016-11-24

Applicant: Smith International, Inc.

Inventor： Yahua Bao ,  Yi Fang ,  Haibo Zhang ,  John Daniel Belnap ,  Youhe Zhang

IPC: E21B10/55 ,  E21B10/56 ,  E21B10/567

Abstract: A cutting element has an ultrahard layer on a substrate, the ultrahard layer having a non-planar working surface. The non-planar working surface is formed from a first region and a second region, where the first region encompasses at least a cutting edge or tip of the cutting element and has a differing composition than the second region.

公开(公告)号：US20190177236A1

公开(公告)日：2019-06-13

申请号：US16309660

申请日：2017-06-27

Applicant: Smith International, Inc.

Inventor： Yahua Bao

IPC: C04B35/5831 ,  C04B35/645

Abstract: A method of sintering a binderless cBN body includes providing a boron nitride particle mixture into a pressure chamber, the boron nitride particle mixture having a first type of boron nitride particles and boron nitride filler particles, and the boron nitride filler particles having a different size and/or type than the first type of boron nitride particles, and sintering the boron nitride particle mixture in the pressure chamber to form the cBN body by generating a pressure in the pressure chamber of less than 7.7 GPa and heating the boron nitride particle mixture to a temperature ranging from about 1900° C. to about 2300° C., wherein the cBN body has a density of at least 97 percent.

公开(公告)号：US10239273B2

公开(公告)日：2019-03-26

申请号：US15899735

申请日：2018-02-20

Applicant: Smith International, Inc.

Inventor： Yahua Bao ,  J. Daniel Belnap ,  Stewart N. Middlemiss

IPC: B30B11/00 ,  B30B15/00 ,  B01J3/06

Abstract: HPHT press system includes a thermal insulation layer. The thermal insulation layer includes CsCl, CsBr, CsI, or a combination thereof, and the thermal insulation layer is electrically insulating. The thermal insulation layer may include a thermal insulation sleeve and/or a thermal insulation button for an HPHT cell.

公开(公告)号：US20180305598A1

公开(公告)日：2018-10-25

申请号：US15770805

申请日：2016-11-01

Applicant: Smith International, Inc.

Inventor： Guojiang Fan ,  Yahua Bao ,  Jeffrey Bruce Lund

IPC: C09K3/14 ,  C01B32/28 ,  B24D3/08 ,  B24D18/00 ,  B24D99/00 ,  C22C26/00 ,  B22F7/08 ,  E21B10/573

CPC classification number: C09K3/14 ,  B22F7/08 ,  B22F2005/001 ,  B22F2999/00 ,  B24D3/08 ,  B24D18/00 ,  B24D18/0009 ,  B24D99/005 ,  C01B32/28 ,  C22C26/00 ,  C22C2204/00 ,  E21B10/54 ,  E21B10/5735 ,  C22C29/06

Abstract: A polycrystalline diamond construction may be made by subjecting diamond grains to a high pressure/high temperature condition in the presence of a catalyst material to form a polycrystalline diamond material comprising a matrix phase of bonded together diamond grains and interstitial regions disposed between the diamond grains including the catalyst material, treating the polycrystalline diamond material to remove the catalyst material therefrom to form a diamond body that is substantially free of the catalyst material, and attaching a substrate to the diamond body with a layer of eruption minimization material having a thickness from about 2 μm to 8 μm on at least one attachment interface surface of the substrate and/or diamond body.

公开(公告)号：US20170122038A1

公开(公告)日：2017-05-04

申请号：US15276183

申请日：2016-09-26

Applicant: Smith International, Inc.

Inventor： Yahua Bao ,  Anatoliy Garan ,  Michael David France ,  John Daniel Belnap

IPC: E21B10/567 ,  B24D3/04

CPC classification number: E21B10/567 ,  B24D3/04 ,  B24D18/0009 ,  E21B10/46

Abstract: A method of making a polycrystalline diamond compact includes forming multiple layers of premixed diamond particles and carbonate material, where the carbonate material includes an alkaline earth metal carbonate, and where each layer has a weight percent ratio of diamond to carbonate that is different from adjacent layers. The layers are subjected to high pressure high temperature conditions to form polycrystalline diamond.