CN103748310A - Superhard constructions - Google Patents
Superhard constructions Download PDFInfo
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- CN103748310A CN103748310A CN201280025859.7A CN201280025859A CN103748310A CN 103748310 A CN103748310 A CN 103748310A CN 201280025859 A CN201280025859 A CN 201280025859A CN 103748310 A CN103748310 A CN 103748310A
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- 238000010276 construction Methods 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims abstract description 97
- 239000000758 substrate Substances 0.000 claims abstract description 92
- 238000005520 cutting process Methods 0.000 claims description 41
- 229910003460 diamond Inorganic materials 0.000 claims description 30
- 239000010432 diamond Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 description 14
- 239000002245 particle Substances 0.000 description 11
- 239000013078 crystal Substances 0.000 description 9
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 9
- 229910052582 BN Inorganic materials 0.000 description 6
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- 229910017052 cobalt Inorganic materials 0.000 description 6
- 239000010941 cobalt Substances 0.000 description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 6
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 5
- 229910001573 adamantine Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 4
- 238000003491 array Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000531 Co alloy Inorganic materials 0.000 description 2
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- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
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- 239000002131 composite material Substances 0.000 description 1
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- 238000011049 filling Methods 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 pottery Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/18—Wheels of special form
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Laminated Bodies (AREA)
- Golf Clubs (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
A superhard construction comprises a substrate and an ultra hard material layer formed over the substrate. One of the interface surface of the substrate or the interface surface of the ultra hard material layer comprises a plurality of spaced-apart projections arranged to project from the interface surface, the interface surface between the spaced-apart projections being uneven. A further superhard construction comprises a plurality of projections arranged to project from the interface surface which abut one or more adjacent projections along an edge thereof on the surface from which the projections project, and extend over all or a majority of the interface surface. One or more of the surfaces of all or a majority of the projections extend in one or more planes which are not substantially parallel to the plane of the exposed outer surface of the ultra hard material layer and/or in one or more planes which are not substantially parallel to a plane through which the central longitudinal axis of the substrate extends.
Description
Technical field
Relate to superhard structure and manufacture method thereof herein, more specifically but do not relate to uniquely and comprise the structure that polycrystalline diamond (PCD) is attached to substrate, and it is pierced to ground as cutting insert or cutting element for drill bit.
Background technology
Polycrystalline superhard material, for example polycrystalline diamond (PCD) and polycrystal cubic boron nitride (PCBN), can be widely used in various tool for cutting, machine, boring or decompose such as rock, metal, pottery, composite material with containing the so hard or coarse material of wood material.More specifically, comprise that the instrument insert of the cutting element form of PCD material is widely used in drill bit, to pierce ground, extract oil or natural gas.Due to the fracture of superhard material, comprise spallation or peel off, or the wearing and tearing of instrument insert, can limit the working life of sintered carbide tools insert.
The main body typically such as the cutting element for rock drill bit or other cutting element with the substrate form that comprises interface edge/interface surface, and formation is for example attached to the superhard material of the interface surface cutting lay of substrate by sintering process.Substrate is made by Wc-Co alloys conventionally, and Wc-Co alloys is called as cemented tungsten carbide sometimes; And ultra hard material layer is polycrystalline diamond (PCD), polycrystal cubic boron nitride (PCBN) or such as thermally-stabilised product (TSP) material of thermally-stabilised polycrystalline diamond typically.
Polycrystalline diamond (PCD) is an example of superhard material (also referred to as super hard abrasive), and it comprises a large amount of diamond crystalses of intergrowth substantially, has formed the skeleton piece that limits gap between diamond particles.PCD material typically comprises the diamond at least about 80% volume ratio, traditionally by making the aggregation block of diamond crystals for example stand higher than the super-pressure of about 5GPa and make at least about the temperature of 1200 ℃.The material in all or part of filling gap can be called as filler or binder.
PCD forms conventionally under the effect of the sintering aid such as cobalt, and sintering aid can promote the intergrowth of diamond crystals.Owing to having, dissolve to a certain extent the function that diamond and catalytic gold hard rock deposit again, for the applicable sintering aid of PCD conventionally also referred to as adamantine solvent-catalyst material.Adamantine solvent-catalyzer should be understood to be under the stable pressure and temperature condition of diamond heating power, can promote the material of the diamond-diamond intergrowth between diamond film or guiding diamond particles.Therefore, the gap in the PCD of sintering product can completely or partially be filled by remaining solvent-catalyst material.The most typically, PCD forms conventionally in cobalt-cemented tungsten carbide substrate, and this substrate provides cobalt solvent-catalyst source for PCD.Can not promote the material of the basically identical intergrowth between diamond particles itself to form strong chemical bond with diamond crystals, but be not suitable as the solvent-catalyzer of PCD sintering.
The cemented tungsten carbide that can be used for forming applicable substrate is formed by tungsten carbide particle, and this tungsten carbide particle, by tungsten carbide particle/crystal grain and cobalt are mixed, is then heating and curing them to be dispersed in cobalt matrix.In order to form the cutting element having such as the ultra hard material layer of PCD or PCBN; diamond particles or crystal grain or CBN crystal grain and cemented tungsten carbide main body are adjacent to be placed in the heating resisting metal shell of niobium shell for example; thereby and stand high pressure-temperature form intercrystalline bonding between diamond crystals or at CBN intergranule, form polycrystalline ultrahard diamond or polycrystalline CBN layer.
In some cases, substrate can be solidified completely before being combined with ultra hard material layer; And in other cases, substrate can be immature (green), do not solidified completely.Under latter event, can substrate is completely curing in the sintering process of HTHP.Substrate can be the form of powder, and can solidify in the sintering process of sintering ultra hard material layer being used for.
Cobalt has and is obviously different from adamantine coefficient of thermal expansion, and therefore, once heating polycrystalline diamond abrasive compact in use, the suprabasil cobalt of being combined with PCD material expands, and can cause in PCD material and form crackle, causes PCD layer Quality Down.
In order to reduce the generation of interfaces residual stress between substrate and superabrasive layer, known in suprabasil interface surface, form a plurality of from the outstanding coaxial annular rings of flat interface surface.Due to the difference between the coefficient of thermal expansion of substrate and the coefficient of thermal expansion of ultra hard material layer, when cutting element is cooling after HTHP sintering, these layers can shrink with different rates.Pulling force region is formed on the upper surface of ring, and pressure span be formed on these ring between depression on/depression in.Therefore, in use when crackle starts to grow, it can be along the whole upper surface ring-type growth that is exposed to the annular ring of pulling force, or can, along the whole ring-shaped depression growth being exposed between the outstanding ring of pressure, cause cutting element premature failure.
It is also known that, cutting element substrate interface comprises a plurality of separated thrusts, and described thrust has from the upper surface of the outstanding relatively flat of flat interface surface.
The common issue that affects cutting element is the fragment of ultra hard material layer, peels off, partly ruptures and crack.Another problem is along the crack at the interface between ultra hard material layer and substrate with through the propagation of the crackle of interface surface.These problems can cause ultra hard material layer premature failure, thereby shorten the working life of cutting element.Therefore, in for example boring the height wearing and tearing of rock or the application of high impact forces, need to have ultra hard material layer and extend the cutting element of working life, the possibility that wherein produces crack, fragment and fracture is lowered maybe and can controls.
Summary of the invention
From first aspect, the invention provides a kind of superhard structure, described superhard structure comprises:
Substrate, it comprises outer surface, interface surface and the longitudinal axis; And
Ultra hard material layer, its be formed in described substrate and there is the external surface that exposes, from the outer surface of its extension be attached to the interface surface of the interface surface of described substrate;
Wherein, in the interface surface of described substrate or the interface surface of described ultra hard material layer comprises:
From the outstanding a plurality of separated thrust of described interface surface, the interface surface between described separated thrust is uneven.
In some embodiments, all interface surface between described separated thrust or most of interface surface are not curved surfaces, but substantially in uneven one or more plane, extend in the plane of the external surface exposing with described ultra hard material layer.
In some embodiments, in all interface surface between separated thrust or most of interface surface, all at the center longitudinal axis with described substrate, via the plane of its extension, substantially in uneven one or more plane, extend.
In some embodiments, one or more surface in all thrusts or most of thrust, substantially extends and/or substantially in uneven one or more plane, extends via the plane of its extension at the center longitudinal axis with described substrate in uneven one or more surface in the plane of the external surface exposing with described ultra hard material layer.。
In some embodiments, substantially identical at the thickness of outer surface with ultra hard material layer around the thickness of the described ultra hard material layer of the center longitudinal axis of described substrate.
From second aspect, the invention provides a kind of superhard structure, described superhard structure comprises:
Substrate, it comprises periphery and interface surface and the longitudinal axis; And
Ultra hard material layer, its be formed in described substrate and there is the external surface that exposes, by the outer surface of its extension be attached to the interface surface of the interface surface of described substrate;
Wherein, in the interface surface of described substrate or the interface surface of described ultra hard material layer comprises:
From the outstanding a plurality of thrusts of described interface surface, this thrust on the outstanding surface of thrust along its edge the thrust adjacency adjacent with one or more, and extend in all interface surface or most of interface surface; And
Wherein, one or more surface of all thrusts or most of thrust, substantially extends and/or substantially in uneven one or more plane, extends via the plane of its extension at the center longitudinal axis with described substrate in uneven one or more plane in the plane of the external surface exposing with described ultra hard material layer.
From the third aspect, the invention provides a kind of earth-boring bits, it comprises a main body, and the above-mentioned superhard structure as cutting element is installed in this main body.
Accompanying drawing explanation
Now by the mode of example and describe nonrestrictive embodiment with reference to accompanying drawing.In the accompanying drawings:
Fig. 1 is the stereogram of cutting element;
Fig. 2 a is a plurality of thrusts in Fig. 1 stereograms in free space;
Fig. 2 b is the schematic plan view of the substrate of cutting element in Fig. 1;
Fig. 2 c is that the substrate shown in Fig. 2 b is along the schematic sectional view of A-A axle;
Fig. 2 d is the schematic perspective view of the substrate of cutting element in Fig. 1;
Fig. 3 is according to the stereogram of the cutting element of an embodiment;
Fig. 4 is according to the stereogram of the substrate of another embodiment;
Fig. 5 a is according to the stereogram of the substrate of the cutting element of another embodiment;
Fig. 5 b is the schematic plan view of substrate of the cutting element of Fig. 5 a; And
Fig. 5 c is that the substrate shown in Fig. 5 b is along the schematic sectional view of A-A axle.
The specific embodiment
In embodiment described herein, when thrust or depression are described as when substrate surface forms, be construed as them and also on the surface of the ultra hard material layer with boundary, substrate interface surface, form, have and the contrary feature forming in substrate.In addition, should be appreciated that, the back side of interface surface or reverse side are to form on the ultra hard material layer with substrate boundary, make two interfaces can form the cooperation of coupling.
" superhard material " used herein is a kind of material having at least about 28GPa Vickers hardness.Diamond and cubic boron nitride (cBN) material is all the example of superhard material.
" superhard structure " used herein refer to comprise polycrystalline superhard material main body and with the structure of the substrate of its combination.
Polycrystalline diamond used herein (PCD) is a kind of of the polycrystalline superhard material (PCS) that comprises a large amount of diamond particles, and its major part is bonding each other, and wherein adamantine content at least accounts for the volume ratio of this material 80%.In an embodiment of PCD material, the gap between diamond crystals can be at least partly by comprising that the binder for adamantine catalyzer fills." gap " used herein or " gap area " are the regions between the diamond crystals of PCD material.In the embodiment of PCD material, gap or gap area can be filled by the material beyond diamond substantially or partly, or they can be empty substantially.PCD material can comprise the region that at least one catalyst material is removed from gap, reserves the interstitial void of diamond particles.
PCBN(polycrystal cubic boron nitride used herein) material refers to and comprises superhard material a kind of who is distributed in intramatrical cubic boron nitride (cBN) particle that comprises metal or pottery.PCBN is an example of superhard material.
For " catalyst material " of superhard material, can promote growth or the sintering of superhard material.
Term used herein " substrate " refers to any substrate that forms ultra hard material layer on it.For example, " substrate " used herein can be the transition zone forming in other substrate.In addition, not to be intended to feature limits be standard round to the term such as term used herein " radially ", " hoop ".
In institute's drawings attached, identical Reference numeral represents identical feature.
In the embodiment shown in Fig. 1, the ultra hard material layer 12 that cutting element 1 comprises substrate 10 and forms in substrate 10.Substrate can be formed by the hard material such as cemented tungsten carbide.Superhard material can be for example polycrystalline diamond (PCD), polycrystal cubic boron nitride (PCBN) or such as the thermally-stabilised product (TSP) of thermally stable P CD.Cutting element 1 can be arranged in the bit body such as drag bit body (not shown).The upper surface exposing back to the ultra hard material layer of substrate has formed cutting face 14, and in use, cutting function is carried out at 14Yu Qi edge, cutting face 16 together.
In one end of substrate 10, be the interface surface 18 of having a common boundary with ultra hard material layer 12, ultra hard material layer 12 is in this interface surface and its combination.Substrate 10 is generally columniform, and has an outer surface 20 and upper neighboring 22.In the embodiment shown in Fig. 1, interface surface 18 comprise in a plurality of the first arrays that are arranged on substantially annular and with neighboring 22 separated thrust 24 separately, and the thrust 26 that is radially positioned at second or inner basic annular array of the first array 24.
Shown in a-2d, in this embodiment, separated thrust 24,26 is arranged in two arrays as shown in Figure 1, Figure 2, and described two arrays are arranged in the path of the annular substantially of the center longitudinal axis of substrate 10.Yet, the present invention is not limited to this geometry, and for example, arranging of thrust 24,26 can be the orderly other than ring type array in interface surface 18, or thrust is random distribution thereon, rather than substantially annular or other orderly array distribution.In addition, in the embodiment arranging with annular array at thrust, these thrusts can ovalisation or asymmetric, or can depart from the center longitudinal axis of substrate 10.And, although the more close external array 24 of the thrust 26 of the local array illustrating, rather than the center longitudinal axis of close substrate, the thrust 26 of local array can more close center longitudinal axis in other embodiments.
As shown in Figure 1, Figure 2 shown in a-2d, in these embodiments, all thrusts or most of thrust 24,26 form and make all or most surfaces of thrust and the cutting face 14 of ultra hard material layer 12 substantially not parallel or substantially not parallel via the plane of its extension with the substrate longitudinal axis.And in the embodiment shown in Fig. 1-3 and Fig. 5 a-5c, the interface surface 18 in the space between thrust is uneven.This can be interpreted as but be not limited to, and with peak and low ebb, covers one or more so inhomogeneous, different, irregular, coarse, uneven and/or rough gap.This set is considered to for suppressing the continuous crack propagation along interface surface 18, and is increased in the contact area between the interface of substrate 10 and the interface of ultra hard material layer 12.In addition, this set is considered to form for " elasticity " ripple in interfering material, and makes the crack deflection of interface.The space that these separate each thrust 24,26 and adjacent thrust or uneven depression can be uniformly in some embodiments, can be inhomogeneous in other embodiments.
In Fig. 1 and Fig. 2 a-2d, thrust 24,26 substantially equidistant separation each substantially annular array in/around each substantially annular array equidistant separation, each thrust 24,26 is arranged in the given array with same diameter.But thrust 24,26 can form the shape of any expectation, as mentioned above, and in even or inhomogeneous mode, separate each other, thereby change stress field in interface surface 18.As shown in the embodiment of Fig. 1 and Fig. 2, externally the thrust in array 24 is larger than the size of the thrust in local array.But these relative sizes can be put upside down, or the thrust in two arrays 24,26 can be substantially unified size, or the mixing of various sizes.
In the embodiment of Fig. 1 and Fig. 2 a-2d, the quantity of the thrust 24 that external array comprises is twices of internal layer, for example, be respectively 10 projections and 5 projections.This makes cutting element 1 can have false axial symmetry, freely cutting head (cutter) is positioned in instrument or drill bit thus, wherein this cutting head and just can using without special location.Thrust 24,26 is located by this way and forms, and their blocking-up cracks are through interface surface 18 and along one or more continuous path of its propagation.In addition, in some embodiments, these thrusts and/or interval therebetween whole or most of, do not have and anyly put on the substantially perpendicular or parallel surface of any load of the cutting element 1 of use with expectation, do not there is the substantially perpendicular or parallel surface of any outer surface any with it yet.
The setting of thrust 24,26 and shape and space therebetween can affect the stress distribution in cutting element 1, and for example by stop or deflection through among thrust 24,26, on or near the crack growth of stress area, can improve the opposing of cutting element fracture growth, more specifically, the opposing to the crack growth along interface surface 18.
In the embodiment shown in Fig. 3, at the thickness of the ultra hard material layer in the center longitudinal axis region around substrate 10, may be substantially the same with the thickness of superhard material in ultra hard material layer 12 edges.This volume and area that is exposed to the superhard material of working surface in making to use can significantly not reduce along with the development of wearing and tearing, extend thus the application life of cutting element 1.In addition, when at axially loaded, it contributes to strengthen cutting element 1.And it contributes to the possibility reducing or elimination in use forms groove wear substantially.
Figure 4 illustrates another embodiment of substrate 50 and interface surface 51.The interface surface 51 of substrate 50 comprises the row of a plurality of adjacent thrusts 54, and the shape of every a line is substantially tapered, and along the outstanding surface 50 of thrust 54, along a side of its bottom, the thrust adjacency adjacent with one or more.In this embodiment, all thrusts 54 or most of thrust 54 do not have with by any surface of the cutting face (not shown) almost parallel of the superabrasive layer with its combination, do not have and the longitudinal axis of the substrate 50 any surface via the plane almost parallel of its extension yet.Thrust 54 can have duplicate height, or other projection object height of the aspect ratio of some thrusts.
(not shown) in another embodiment, be not that whole interface surface 18,51 is all covered by the thrust 54 shown in Fig. 4, only have most of interface surface 18,51 to be covered by the thrust 54 of adjacency, and arbitrary interface surface 18,51 between thrust 54 or that do not covered by thrust 54 can be uneven, as Figure 1-3.
Fig. 5 a-5c shows another embodiment of substrate 100.The difference of the embodiment shown in this embodiment and Fig. 1-2 d is, the shape of the thrust 24,26 extending from interface surface 18 is different, and externally the quantity of the thrust 24 in array is less than the quantity shown in Fig. 1.In the embodiment shown in Fig. 5 a-5c, these thrusts 24,26 have and comprise one or more nonplanar peripheral shape.
In one or more above-mentioned embodiment, the feature of interface surface 18,51 can be integrally formed, and substrate is by using suitable moulding form to form, and places the particle of the material that forms substrate in this mould.Alternatively, the uneven surface of thrust and interface surface 18,51 can be to form after substrate is made, or partly by generating process, makes, for example, by traditional processing technology, make.Can adopt similar program to ultra hard material layer 12, to make the interface surface of correspondingly-shaped, form and coordinating that the interface surface of substrate is mated.
Ultra hard material layer 12 can be by combining such as traditional soldering tech or by traditional HTHP sintering technology and substrate.
If ultra hard material layer 12 can or stand further HTHP sintering process elimination catalyst material partially or entirely by subsequent technique, the durability so with above-mentioned interface feature and/or the cutting product that comprises substrate and ultra hard material layer that wherein elastic stress wave is weakened just can be further enhanced.When ultra hard material layer 12 is when substrate is combined or for example by by ultra hard material layer 12 that ultra hard material layer 12 is separated from substrate and filtration (leaching) is separated, can filter.Under latter event, after filter occurring, for example use soldering tech or by using high-temperature and high-pressure technique sintering again, ultra hard material layer 12 can be attached to substrate again.
Although described with example some specific embodiment, should be appreciated that, can make various changes and modification.For example, substrate described herein is pointed out by way of example.It should be understood that superhard material can be incorporated into other carbide substrate except tungsten carbide substrate, the substrate of for example being made by the carbide of W, Ti, Mo, Nb, V, Hf, Ta and Cr.In addition, although in the embodiment shown in Fig. 1 to Fig. 5 c, PCD structure has sharp Bian Hejiao, and embodiment can comprise the PCD structure with limit round, taper or that cut sth. askew or angle.Therefore such embodiment can reduce internal stress, extends working life by the opposing that improves cutting element through substrate interface or have crack, fragment and a fracture that the ultra hard material layer of unique geometry produces.
Claims (23)
1. a superhard structure, described superhard structure comprises:
Substrate, it comprises outer surface, interface surface and the longitudinal axis; And
Ultra hard material layer, its be formed in described substrate and there is the external surface that exposes, from outer surface and the interface surface of its extension;
Wherein, in the interface surface of described substrate or the interface surface of described ultra hard material layer comprises:
From the outstanding a plurality of separated thrust of described interface surface, the interface surface between described separated thrust is uneven.
2. superhard structure according to claim 1, wherein, all interface surface between described separated thrust or most of interface surface are not curved surfaces, but substantially in uneven one or more plane, extend in the plane of the external surface exposing with described ultra hard material layer.
3. according to the superhard structure described in any one in the claims, described substrate has a center longitudinal axis, wherein, in all interface surface between separated thrust or most of interface surface, all at the center longitudinal axis with described substrate, via the plane of its extension, substantially in uneven one or more plane, extend.
4. according to the superhard structure described in any one in the claims, wherein, described thrust is arranged on one or more substantially in array radially around the center longitudinal axis of described substrate.
5. superhard structure according to claim 4, wherein, described thrust is arranged in the first array and the second array, and described the second array is radially positioned at described the first array.
6. superhard structure according to claim 5, wherein, described the first array and described the second array are coaxial with described substrate substantially.
7. according to the superhard structure described in claim 5 or 6, wherein, the quantity of the thrust that described the first array comprises is the twice of quantity of the thrust of the second array substantially.
8. according to the superhard structure described in any one in claim 5 to 7, wherein, the thrust in described the first array and described the second array is interlaced with each other.
9. according to the superhard structure described in any one in claims 1 to 3, wherein, described thrust is random distribution in the interface surface of described substrate or on of the interface surface of described ultra hard material layer.
10. according to the superhard structure described in any one in the claims, wherein, one or more surface of all thrusts or most of thrust, substantially extends and/or substantially in uneven one or more plane, extends via the plane of its extension at the center longitudinal axis with described substrate in uneven one or more surface in the plane of the external surface exposing with described ultra hard material layer.
11. according to the superhard structure described in any one in the claims, wherein, substantially identical at the thickness of outer surface with ultra hard material layer around the thickness of the described ultra hard material layer of the center longitudinal axis of described substrate.
12. according to the superhard structure described in any one in the claims, and wherein, described ultra hard material layer comprises polycrystalline diamond.
13. according to the superhard structure described in any one in the claims, and wherein, the external surface that described ultra hard material layer exposes is flat substantially.
14. according to the superhard structure described in any one in the claims, and wherein, the height of described thrust is identical.
15. according to the superhard structure described in any one in claim 5 to 7, and wherein, the thrust in described the first array is higher than the thrust height in described the second array.
16. 1 kinds of superhard structures, described superhard structure comprises:
Substrate, it comprises outer surface, interface surface and the longitudinal axis; And
Ultra hard material layer, its be formed in described substrate and there is the external surface that exposes, from outer surface and the interface surface of its extension;
Wherein, in the interface surface of described substrate or the interface surface of described ultra hard material layer comprises:
From the outstanding a plurality of thrusts of described interface surface, this thrust on the outstanding surface of thrust along its edge the thrust adjacency adjacent with one or more, and extend in all interface surface or most of interface surface; And
Wherein, one or more surface of all thrusts or most of thrust, substantially extends and/or substantially in uneven one or more plane, extends via the plane of its extension at the center longitudinal axis with described substrate in uneven one or more plane in the plane of the external surface exposing with described ultra hard material layer.
17. superhard structures according to claim 16, wherein, the arbitrary interface surface between any thrust or the arbitrary interface surface not covered by described thrust are uneven.
18. according to the superhard structure described in any one in claim 16 or 17, and wherein, described thrust is cone substantially.
19. according to claim 15 to the superhard structure described in any one in 18, and wherein, described thrust is arranged to orderly array in interface surface.
20. according to the superhard structure described in any one in the claims, and wherein, the interface surface of described substrate is the back side or the reverse side of the interface surface of ultra hard material layer, makes described two interface surface form the cooperation of coupling.
21. according to the superhard structure described in any one in the claims, and wherein, described superhard structure is cutting element.
22. 1 kinds of earth-boring bits, it comprises a main body, is provided with as the superhard structure described in any one in the claims of cutting element in this main body.
23. 1 kinds of methods that form the superhard structure described in any one in claim 1 to 21.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161479248P | 2011-04-26 | 2011-04-26 | |
| US61/479,248 | 2011-04-26 | ||
| PCT/EP2012/057584 WO2012146626A2 (en) | 2011-04-26 | 2012-04-25 | Superhard constructions & methods of making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103748310A true CN103748310A (en) | 2014-04-23 |
| CN103748310B CN103748310B (en) | 2017-09-01 |
Family
ID=46044661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280025859.7A Active CN103748310B (en) | 2011-04-26 | 2012-04-25 | Superhard construction |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140087640A1 (en) |
| CN (1) | CN103748310B (en) |
| GB (1) | GB2505575B (en) |
| WO (1) | WO2012146626A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002475A (en) * | 2014-12-05 | 2017-08-01 | 贝克休斯公司 | Degradable anchor with bulk material |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130081882A1 (en) * | 2011-09-30 | 2013-04-04 | Diamond Innovations, Inc. | Method of characterizing a material using three dimensional reconstruction of spatially referenced characteristics and use of such information |
| GB201322340D0 (en) * | 2013-12-17 | 2014-01-29 | Element Six Abrasives Sa | Super hard constructions & methods of making same |
| US20160311689A1 (en) * | 2013-12-17 | 2016-10-27 | Element Six Limited | Superhard constructions & methods of making same |
| WO2017106388A1 (en) * | 2015-12-14 | 2017-06-22 | Smith International, Inc. | Direct casting of ultrahard insert in bit body |
| GB201523149D0 (en) * | 2015-12-31 | 2016-02-17 | Element Six Uk Ltd | Super hard constructions & methods of making same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005904A1 (en) * | 1990-10-05 | 1992-04-16 | Sumitomo Electric Industries, Ltd. | Hard material clad with diamond, throwaway chip, and method of making said material and chip |
| EP0601840A1 (en) * | 1992-12-10 | 1994-06-15 | Camco Drilling Group Limited | Improvements in or relating to cutting elements for rotary drill bits |
| CN1249221A (en) * | 1998-07-31 | 2000-04-05 | 住友电气工业株式会社 | Diamond sinter and its mfg. method |
| US6068913A (en) * | 1997-09-18 | 2000-05-30 | Sid Co., Ltd. | Supported PCD/PCBN tool with arched intermediate layer |
| US20080302578A1 (en) * | 2007-06-11 | 2008-12-11 | Eyre Ronald K | Cutting elements and bits incorporating the same |
| CN101427000A (en) * | 2006-02-23 | 2009-05-06 | 贝克休斯公司 | Backup cutting element insert for rotary drill bits |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2060823C (en) * | 1991-02-08 | 2002-09-10 | Naoya Omori | Diamond-or diamond-like carbon-coated hard materials |
| EP0655548B1 (en) * | 1993-11-10 | 1999-02-03 | Camco Drilling Group Limited | Improvements in or relating to elements faced with superhard material |
| US6082474A (en) * | 1997-07-26 | 2000-07-04 | Camco International Limited | Elements faced with superhard material |
| US7909121B2 (en) * | 2008-01-09 | 2011-03-22 | Smith International, Inc. | Polycrystalline ultra-hard compact constructions |
| EP2467559B1 (en) * | 2009-08-17 | 2017-10-25 | Smith International, Inc. | Improved non-planar interface construction |
-
2012
- 2012-04-25 GB GB1317530.2A patent/GB2505575B/en active Active
- 2012-04-25 WO PCT/EP2012/057584 patent/WO2012146626A2/en active Application Filing
- 2012-04-25 US US14/009,890 patent/US20140087640A1/en not_active Abandoned
- 2012-04-25 CN CN201280025859.7A patent/CN103748310B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005904A1 (en) * | 1990-10-05 | 1992-04-16 | Sumitomo Electric Industries, Ltd. | Hard material clad with diamond, throwaway chip, and method of making said material and chip |
| EP0601840A1 (en) * | 1992-12-10 | 1994-06-15 | Camco Drilling Group Limited | Improvements in or relating to cutting elements for rotary drill bits |
| US6068913A (en) * | 1997-09-18 | 2000-05-30 | Sid Co., Ltd. | Supported PCD/PCBN tool with arched intermediate layer |
| CN1249221A (en) * | 1998-07-31 | 2000-04-05 | 住友电气工业株式会社 | Diamond sinter and its mfg. method |
| CN101427000A (en) * | 2006-02-23 | 2009-05-06 | 贝克休斯公司 | Backup cutting element insert for rotary drill bits |
| US20080302578A1 (en) * | 2007-06-11 | 2008-12-11 | Eyre Ronald K | Cutting elements and bits incorporating the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002475A (en) * | 2014-12-05 | 2017-08-01 | 贝克休斯公司 | Degradable anchor with bulk material |
| CN107002475B (en) * | 2014-12-05 | 2019-10-22 | 贝克休斯公司 | Degradable anchor with bulk material |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140087640A1 (en) | 2014-03-27 |
| GB2505575B (en) | 2018-12-19 |
| WO2012146626A3 (en) | 2013-11-14 |
| CN103748310B (en) | 2017-09-01 |
| WO2012146626A2 (en) | 2012-11-01 |
| GB201317530D0 (en) | 2013-11-20 |
| GB2505575A (en) | 2014-03-05 |
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