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1. WO2020005257 - POLYCRYSTALLINE DIAMOND CUTTERS AND LIQUID SEDIMENTATION - HPHT METHOD OF MAKING THEREOF

Publication Number WO/2020/005257
Publication Date 02.01.2020
International Application No. PCT/US2018/040029
International Filing Date 28.06.2018
IPC
B PERFORMING OPERATIONS; TRANSPORTING
24
GRINDING; POLISHING
D
TOOLS FOR GRINDING, BUFFING OR SHARPENING
18
Manufacture of grinding tools, e.g. wheels, not otherwise provided for
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
515
based on non-oxides
52
based on carbon, e.g. graphite
528
obtained from carbonaceous particles with or without other non-organic components
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622
Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
626
Preparing or treating the powders individually or as batches
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622
Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
64
Burning or sintering processes
645
Pressure sintering
B24D 18/00 (2006.01)
C04B 35/528 (2006.01)
C04B 35/626 (2006.01)
C04B 35/645 (2006.01)
CPC
B24D 18/00
C04B 2235/782
C04B 2235/786
C04B 35/528
C04B 35/6264
C04B 35/645
Applicants
  • DIAMOND INNOVATIONS, INC. [US/US]; 6325 Huntley Road Worthington, Ohio 43085, US
Inventors
  • FLOOD, Gary; US
Agents
  • SHAFFER, Eric; US
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POLYCRYSTALLINE DIAMOND CUTTERS AND LIQUID SEDIMENTATION - HPHT METHOD OF MAKING THEREOF
(FR) DISPOSITIFS DE COUPE EN DIAMANT POLYCRISTALLIN ET LEUR PROCÉDÉ DE FABRICATION PAR SÉDIMENTATION DANS UN LIQUIDE À PRESSION ÉLEVÉE ET À TEMPÉRATURE ÉLEVÉE
Abstract
(EN)
Polycrystalline diamond cutters (500, 520, 540, 560) and methods of making thereof are described, the cutters including a substrate (502, 522, 542, 562), and a diamond body (501, 521, 541, 561), the diamond body including diamond particles spatially arranged according to a gradient of particle sizes. The methods include steps of suspending diamond particles in a liquid and allowing their sedimentation according to a gradient of particle sizes resulting in regions spatially arranged axially and/or radially in which a majority of diamond particles in one region (405, 428, 449) have lower average sizes or average diameters comparative to a majority of diamond particles in a second region (406, 429, 448).
(FR)
L'invention concerne des dispositifs de coupe en diamant polycristallin (500, 520, 540, 560) et des procédés de fabrication de ces derniers, les dispositifs de coupe comprenant un substrat (502, 522, 542, 562) et un corps en diamant (501, 521, 541, 561), le corps en diamant comprenant des particules de diamant agencées spatialement selon un gradient de tailles de particules. Les procédés comprennent les étapes consistant à suspendre des particules de diamant dans un liquide et à permettre leur sédimentation selon un gradient de tailles de particules, ce qui conduit à des régions agencées spatialement axialement et/ou radialement, dans lesquelles une majorité de particules de diamant dans une région (405, 428, 449) présentent des tailles moyennes ou des diamètres moyens inférieurs à ceux d'une majorité de particules de diamant dans une seconde région (406, 429, 448).
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