Cutting element incorporating a cutting body and sleeve and method of forming thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-010/573
C22C-026/00
E21B-010/567
B24D-018/00
출원번호
US-0308478
(2014-06-18)
등록번호
US-9816324
(2017-11-14)
발명자
/ 주소
DiGiovanni, Anthony A.
Lyons, Nicholas J.
Hale, Matthew S.
Morozov, Konstantin E.
Liversage, John H.
Scott, Danny E.
Sinor, L. Allen
출원인 / 주소
Baker Hughes
대리인 / 주소
TraskBritt
인용정보
피인용 횟수 :
0인용 특허 :
149
초록▼
A cutting element for use in a drilling bit and/or a milling bit having a cutter body made of a substrate having an upper surface, and a superabrasive layer overlying the upper surface of the substrate. The cutting element further includes a sleeve extending around a portion of a side surface of the
A cutting element for use in a drilling bit and/or a milling bit having a cutter body made of a substrate having an upper surface, and a superabrasive layer overlying the upper surface of the substrate. The cutting element further includes a sleeve extending around a portion of a side surface of the superabrasive layer and a side surface of the substrate, wherein the sleeve exerts a radially compressive force on the superabrasive layer.
대표청구항▼
1. A cutting element for use in a drilling and/or milling bit, comprising: a substrate having an upper surface;a superabrasive layer overlying the upper surface of the substrate, wherein the superabrasive layer comprises an upper surface, a rear surface secured to the upper surface of the substrate,
1. A cutting element for use in a drilling and/or milling bit, comprising: a substrate having an upper surface;a superabrasive layer overlying the upper surface of the substrate, wherein the superabrasive layer comprises an upper surface, a rear surface secured to the upper surface of the substrate, and a side surface extending between the upper surface and the rear surface; anda sleeve in direct contact with and extending around at least a portion of the side surface of the superabrasive layer and a side surface of the substrate, wherein the sleeve exerts a radially compressive force on the superabrasive layer and on the substrate, wherein the radially compressive force on the superabrasive layer is greater than the radially compressive force on the substrate, wherein the sleeve varies in thickness along a longitudinal axis of the cutting element and has a greater thickness in a region of the sleeve extending around the side surface of the superabrasive layer than in a region of the sleeve extending around the side surface of the substrate. 2. The cutting element of claim 1, wherein the sleeve comprises a tapered shape, and wherein a thickness of the sleeve increases along the longitudinal axis of the cutting element from a rear surface of the substrate to the upper surface of the substrate. 3. The cutting element of claim 1, wherein the sleeve comprises a contoured region along an inner surface thereof for complementary engagement with a contoured region along the side surface of the substrate. 4. The cutting element of claim 3, wherein the contoured region along the inner surface of the sleeve comprises at least one protrusion extending radially inward and the contoured region along the side surface of the substrate comprises at least one complementary groove configured to accept the at least one protrusion. 5. The cutting element of claim 3, wherein the contoured region along the inner surface of the sleeve comprises a plurality of discrete steps, each of the plurality of discrete steps comprising a different axial and radial position relative to each other, and the contoured region along the side surface of the substrate comprises a plurality of corresponding discrete steps. 6. The cutting element of claim 1, wherein the superabrasive layer comprises a chamfered surface at an angle to the longitudinal axis of the cutting element between the upper surface and the side surface of the superabrasive layer. 7. The cutting element of claim 6, wherein a material having a Mohs hardness less than a Mohs hardness of the superabrasive layer is disposed between the chamfered surface and the sleeve. 8. The cutting element of claim 7, wherein the material having a Mohs hardness that is less than a Mohs hardness of the superabrasive layer comprises a metal or a metal alloy. 9. The cutting element of claim 7, wherein the material having a Mohs hardness that is less than a Mohs hardness of the superabrasive layer comprises a superalloy. 10. The cutting element of claim 6, wherein the sleeve comprises a protrusion extending radially inward from an inner surface of the sleeve, the protrusion configured to contact at least a portion of the chamfered surface of the superabrasive layer. 11. The cutting element of claim 1, further comprising an intermediate layer disposed between the substrate and the superabrasive layer. 12. The cutting element of claim 11, wherein the intermediate layer exerts a force on the superabrasive layer, wherein a portion of the force is a radially compressive force. 13. The cutting element of claim 12, wherein the intermediate layer comprises a material selected from the group of materials consisting of carbides, carbon-containing materials, and a combination thereof. 14. The cutting element of claim 1, wherein the sleeve comprises a plurality of discrete steps along an outer surface thereof, each of the plurality of discrete steps comprising a different axial and radial position relative to each other. 15. A cutting element for use in a drilling bit and/or milling bit, comprising: a substrate having an upper surface;a superabrasive layer overlying the upper surface of the substrate; anda sleeve in direct contact with and extending around at least a portion of a side surface of the superabrasive layer and a side surface of the substrate, wherein the sleeve exerts a radially compressive force on the superabrasive layer and on the substrate, wherein the radially compressive force on the superabrasive layer is greater than the radially compressive force on the substrate, wherein the sleeve comprises a modulus of elasticity (MOE) that is different than a MOE of the superabrasive layer and comprises a coefficient of thermal expansion that is within a range between 5% and 90% greater than a coefficient of thermal expansion of the superabrasive layer as measured at 300 K. 16. The cutting element of claim 15, wherein the difference in MOE between the sleeve and the superabrasive layer is within a range between about 5% and 50%. 17. The cutting element of claim 15, wherein the difference in MOE between the sleeve and the superabrasive layer is within a range between about 10% and 75%. 18. The cutting element of claim 15, wherein the difference in MOE between the sleeve and the superabrasive layer is within a range between about 5% and about 75%. 19. A method of forming a cutting element for use in a drilling bit and/or milling bit comprising: forming a cutter body comprising a substrate having an upper surface and a superabrasive layer overlying the upper surface of the substrate, wherein the superabrasive layer comprises an upper surface, a rear surface secured to the upper surface of the substrate, and a side surface extending between the upper surface and the rear surface;forming a sleeve comprising a central opening, the sleeve in direct contact with and extending around at least a portion of the side surface of the superabrasive layer and a side surface of the substrate, wherein the sleeve exerts a radially compressive force on the superabrasive layer and on the substrate, wherein the radially compressive force on the superabrasive layer is greater than the radially compressive force on the substrate, wherein the sleeve varies in thickness along a longitudinal axis of the cutting element and has a greater thickness in a region of the sleeve extending around the side surface of the superabrasive layer than in a region of the sleeve extending around the side surface of the substrate; andfitting the cutter body within the central opening of the sleeve to cause the sleeve to exert a radially compressive force on the cutter body. 20. The method of claim 19, wherein fitting the cutter body within the central opening of the sleeve comprises creating a temperature differential between the cutter body and the sleeve, placing the cutter body within the sleeve, and substantially removing the temperature differential.
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