WO2000001916A8 - Abrasive body - Google Patents

Abrasive body

Info

Publication number
WO2000001916A8
WO2000001916A8 PCT/IB1999/001229 IB9901229W WO0001916A8 WO 2000001916 A8 WO2000001916 A8 WO 2000001916A8 IB 9901229 W IB9901229 W IB 9901229W WO 0001916 A8 WO0001916 A8 WO 0001916A8
Authority
WO
WIPO (PCT)
Prior art keywords
abrasive
interface
abrasive body
periphery
abrasive layer
Prior art date
Application number
PCT/IB1999/001229
Other languages
French (fr)
Other versions
WO2000001916A1 (en
Inventor
Klaus Tank
Phillip Alexander Bex
Original Assignee
De Beers Ind Diamond
Klaus Tank
Phillip Alexander Bex
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by De Beers Ind Diamond, Klaus Tank, Phillip Alexander Bex filed Critical De Beers Ind Diamond
Priority to AU46394/99A priority Critical patent/AU4639499A/en
Priority to EP99929616A priority patent/EP1095201A1/en
Publication of WO2000001916A1 publication Critical patent/WO2000001916A1/en
Publication of WO2000001916A8 publication Critical patent/WO2000001916A8/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
    • E21B10/5735—Interface between the substrate and the cutting element

Abstract

An abrasive body comprises an abrasive layer (10) bonded to a substrate (12) along an interface (14) and an abrasive projection (20) extending from the interface (14) into the substrate (12) and extending from a point on the periphery of the abrasive layer (10) to another point on the periphery of the abrasive layer (10). The projection (20) has two stepped regions (22, 24), the one stepped region (24) being further from the interface than the other stepped region (22).
PCT/IB1999/001229 1998-07-06 1999-07-01 Abrasive body WO2000001916A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU46394/99A AU4639499A (en) 1998-07-06 1999-07-01 Abrasive body
EP99929616A EP1095201A1 (en) 1998-07-06 1999-07-01 Abrasive body

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA985924 1998-07-06
ZA98/5924 1998-07-06

Publications (2)

Publication Number Publication Date
WO2000001916A1 WO2000001916A1 (en) 2000-01-13
WO2000001916A8 true WO2000001916A8 (en) 2000-03-16

Family

ID=25587125

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1999/001229 WO2000001916A1 (en) 1998-07-06 1999-07-01 Abrasive body

Country Status (3)

Country Link
EP (1) EP1095201A1 (en)
AU (1) AU4639499A (en)
WO (1) WO2000001916A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA954736B (en) * 1994-06-16 1996-01-26 De Beers Ind Diamond Tool component
GB9412779D0 (en) * 1994-06-24 1994-08-17 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard materials
AU701094B2 (en) * 1995-07-03 1999-01-21 De Beers Industrial Diamond Division (Proprietary) Limited Tool component
GB9621217D0 (en) * 1996-10-11 1996-11-27 Camco Drilling Group Ltd Improvements in or relating to preform cutting elements for rotary drill bits

Also Published As

Publication number Publication date
EP1095201A1 (en) 2001-05-02
WO2000001916A1 (en) 2000-01-13
AU4639499A (en) 2000-01-24

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