公开(公告)号：US20150291479A1

公开(公告)日：2015-10-15

申请号：US14683477

申请日：2015-04-10

Applicant: Smith International, Inc.

Inventor： Xian Yao ,  John Daniel Belnap

IPC: C04B35/5831

CPC classification number: C04B35/5831 ,  C04B35/645 ,  C04B2235/401 ,  C04B2235/5436 ,  C04B2235/5472 ,  C04B2235/5481 ,  C04B2235/6567 ,  C04B2235/80 ,  C04B2235/94 ,  C04B2235/96

Abstract: Polycrystalline cubic boron nitride includes cubic boron nitride grains and AlB12 between the cubic boron nitride grains. A method of manufacturing heat-treated polycrystalline cubic boron nitride includes sintering a mixture including cubic boron nitride and aluminum metal powder to form polycrystalline cubic boron nitride, and heat-treating the polycrystalline cubic boron nitride to form the heat-treated polycrystalline cubic boron nitride. A method of manufacturing polycrystalline cubic boron nitride includes sintering a mixture including cubic boron nitride and aluminum metal powder, the mixture including the cubic boron nitride in an amount of 85 vol % to 95 vol % and the aluminum metal powder in an amount of 5 vol % to 15 vol %, based on the total volume of the mixture.

Abstract translation: 多晶立方氮化硼包括立方氮化硼颗粒和立方氮化硼颗粒之间的AlB 12。 制造热处理多晶立方氮化硼的方法包括烧结包括立方氮化硼和铝金属粉末的混合物以形成多晶立方氮化硼，以及热处理多晶立方氮化硼以形成经热处理的多晶立方氮化硼。 制造多晶立方氮化硼的方法包括烧结包括立方氮化硼和铝金属粉末的混合物，所述混合物包括85体积％至95体积％的立方氮化硼和5体积％的铝金属粉末 基于混合物的总体积％至15体积％。

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：US20180216411A1

公开(公告)日：2018-08-02

申请号：US15745719

申请日：2016-07-20

Applicant: SMITH INTERNATIONAL, INC.

Inventor： John Daniel Belnap ,  Yi Fang ,  Michael David France ,  David P. DenBoer ,  Haibo Zhang

IPC: E21B10/573 ,  E21B10/567 ,  C04B35/528 ,  C04B35/645 ,  C04B35/63 ,  C04B37/02 ,  C22C26/00 ,  C22C29/08 ,  B22F7/08

CPC classification number: E21B10/5735 ,  B22F7/062 ,  B22F7/08 ,  B22F2005/001 ,  B22F2302/10 ,  B22F2302/406 ,  C04B35/528 ,  C04B35/6303 ,  C04B35/645 ,  C04B37/023 ,  C04B37/025 ,  C04B37/026 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/442 ,  C04B2235/96 ,  C04B2237/086 ,  C04B2237/12 ,  C04B2237/363 ,  C04B2237/401 ,  C04B2237/704 ,  C04B2237/72 ,  C22C26/00 ,  C22C29/08 ,  E21B10/50 ,  E21B10/55 ,  E21B10/5673 ,  E21B10/573

Abstract: Cutting elements include a diamond-bonded body attached with a substrate. The substrate has a coercivity of greater than about 200 Oe, and has a magnetic saturation of from about 73 to 90. The diamond-bonded body has a compressive stress at the surface of greater than about 0.9 GPa after heat treatment, and greater than about 1.2 GPa prior to heat treatment.

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.