CN102296931A - High-speed polycrystalline diamond compact sheet - Google Patents
High-speed polycrystalline diamond compact sheet Download PDFInfo
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- CN102296931A CN102296931A CN2011101930555A CN201110193055A CN102296931A CN 102296931 A CN102296931 A CN 102296931A CN 2011101930555 A CN2011101930555 A CN 2011101930555A CN 201110193055 A CN201110193055 A CN 201110193055A CN 102296931 A CN102296931 A CN 102296931A
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Abstract
The invention discloses a high-speed polycrystalline diamond compact sheet, which comprises a compact sheet body of a circular sheet shape, wherein the compact sheet body is mainly formed by the composition of a plurality of hard fan-shaped blocks and a plurality of soft fan-shaped blocks, and both the hard fan-shaped blocks and the soft fan-shaped blocks are of a fan shape with different abrasion ratios; the hard fan-shaped blocks and the soft fan-shaped blocks with the same circle center and the same radius are arranged in an interleaving way so as to form a complete circular sheet jointly; and the two adjacent fan-shaped blocks have the different abrasion ratios, and every other fan-shaped blocks have the same abrasion ratio. The invention makes the polycrystalline diamond compact sheet better embedded into a rock layer under the precondition that an exposure height is ensured.
Description
Technical field
The present invention relates to the superhard material field, relate in particular to a kind of high speed composite polycrystal-diamond.
Background technology
Conventional diamond composite teeth generally is composited by HTHP by the composite polycrystal-diamond on top layer and the hard alloy substrate of bottom.Composite polycrystal-diamond has hardness height, characteristics that abrasion resistance is good, and hard alloy substrate has improved the pliability and the solderability of composite material on the whole.Because composite polycrystal-diamond is of paramount importance cutwork surface on the diamond composite teeth, in the course of work, cutting stress mainly concentrates on the upper surface of composite polycrystal-diamond and the intersection place of side is cutting edge profile line place.As seen, the shape of the cutting edge profile line of the overall performance of composite polycrystal-diamond, particularly composite polycrystal-diamond plays crucial decisive role for the performance of diamond composite teeth.
The cutting force of composite polycrystal-diamond and impact dynamics are by the length decision of cutting edge profile line, and the length of cutting edge profile line is long more, and cutting force and impact dynamics are big more; Otherwise then cutting force and impact dynamics are more little.Traditional composite polycrystal-diamond generally all adopts the glomerocryst material sintering of same prescription to form in process of production, and its formed composite polycrystal-diamond is the wafer body that has unified hardness on the whole.The composite polycrystal-diamond of this disk shape is subjected to the restriction of himself shape, and the length of its cutting edge profile line often is difficult to increase.In addition, because this composite polycrystal-diamond in use, degree of wear of stress point is substantially identical everywhere for it; Therefore in the lifetime of whole polycrystal diamond composite teeth, the change in length of its cutting edge profile line is little.As seen, traditional composite polycrystal-diamond can be along with the growth of its service time, and cutting force and the dynamics of impact performance not only can not increase, on the contrary can be along with the wearing and tearing of composite polycrystal-diamond, and performance progressively reduces.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high speed composite polycrystal-diamond, and it can allow composite polycrystal-diamond can better embed the rock stratum under the prerequisite that guarantees at height of protrusion.
For addressing the above problem, the high speed composite polycrystal-diamond that the present invention is designed, the composite sheet body that comprises the disk shape, described composite sheet body mainly is composited by polylith hard secter pat and the soft secter pat of polylith, wherein hard secter pat and soft secter pat all are fan-shaped, and have different wear resistance ratios between the two; Hard secter pat and soft secter pat space that polylith has phase concentric and radius are provided with, and constitute a disk of finishing jointly; Wherein have different wear resistance ratios between two adjacent secter pats, two have identical wear resistance ratio separately between the secter pat.
In order to improve the intensity of composite polycrystal-diamond, the described composite sheet body of such scheme preferably also includes a hard cylindrical piece; This hard cylindrical piece is cylindric, and is positioned at the central authorities of composite sheet body; The soft secter pat of polylith hard secter pat and polylith all is provided with around this hard cylindrical piece.
In the such scheme, described hard cylindrical piece is preferably identical with the wear resistance ratio of hard secter pat.
Length for the cutting edge profile line that increases composite polycrystal-diamond, in the such scheme, the upper surface of each hard secter pat and/or each soft secter pat preferably is the arc of epirelief, and the upper surface that polylith hard secter pat and the soft secter pat of polylith are constituted forms the curved end of corrugated.
In order to prevent that formation particles from snapping in the recess of polycrystalline diamond layer upper surface, in the such scheme, described composite sheet upper part of body preferably also includes the soft topping of one deck.
In the such scheme, the wear resistance ratio of soft topping is preferably less than the wear resistance ratio of soft secter pat.
In order to strengthen the fastening strength between composite polycrystal-diamond and the bottom hard alloy substrate, in the such scheme, the bottom of described composite sheet body preferably also includes one deck hard topping.
In the such scheme, the hard topping is preferably identical with the wear resistance ratio of hard secter pat.
In the such scheme, the wear resistance ratio of hard secter pat and soft secter pat is preferably between 10: 1～10: 9.
In the such scheme, the area of hard secter pat and soft secter pat than best between 1: 1～5: 1.
Compared with prior art, composite polycrystal-diamond of the present invention adopts hard secter pat and the setting of soft secter pat space to combine; At first, because the hard secter pat adopts the material sintering of different wear resistance ratios to form with soft secter pat, the glomerocryst material of hard secter pat and soft secter pat binding site interpenetrates, formation seamlessly transits, like this for the composite polycrystal-diamond of the same wear resistance ratio material of tradition, strengthened the anti-impact force of composite polycrystal-diamond, made it be difficult for bursting apart; Secondly, the present invention is in the working angles of drill bit because the rate of wear of soft secter pat will be faster than the rate of wear of hard secter pat, the surface of composite polycrystal-diamond and cutting edge profile line can form zigzag gradually; Therefore under identical the pressure of the drill, its cutting force can double above, and acts in the rock stratum of same rigidity, and its efficient can reach more than 1.3～2.0 times of traditional composite polycrystal-diamond; Moreover the present invention is along with the increase of service time, and the performance of composite polycrystal-diamond not only can not reduce, and the cutting force and the dynamics of the impact performance that can increase the composite polycrystal-diamond that makes on the contrary because of the length of cutting edge profile line increase; At last, because the present invention has higher efficient and longer life-span (always cutting advanced depth), therefore in use, need not frequent replacing, pull out of hole and the following brill time thereby effectively saved, make it more be applicable to the big probing fields of drilling depth such as oil, natural gas, offshore oil drilling.
Description of drawings
Fig. 1 is the structural representation of a kind of high speed composite polycrystal-diamond of the present invention.
Number in the figure is: 1, soft topping; 2-1, hard secter pat; 2-2, soft secter pat; 2-3, hard cylindrical piece; 3, hard topping.
The specific embodiment
Referring to Fig. 1, a kind of high speed composite polycrystal-diamond of the present invention comprises the composite sheet body of disk shape, and described composite sheet body mainly is composited by polylith hard secter pat 2-1 and the soft secter pat 2-2 of polylith.Wherein hard secter pat 2-1 and soft secter pat 2-2 all are fan-shaped, and have different wear resistance ratios between the two.Hard secter pat 2-1 and soft secter pat 2-2 space that polylith has phase concentric and radius are provided with, and constitute a disk of finishing jointly.Above-mentioned composite polycrystal-diamond selects for use the diadust sintering of two kinds of different wear resistance ratios to form when producing, and wherein has different wear resistance ratios between two adjacent secter pats, and two have identical wear resistance ratio separately between the secter pat.Having the hard secter pat 2-1 of different wear resistance ratios and the glomerocryst material of soft secter pat 2-2 binding site interpenetrates in sintering process, formation seamlessly transits, like this for the composite polycrystal-diamond of the same wear resistance ratio material of tradition, can effectively strengthen the anti-impact force of composite polycrystal-diamond, make it be difficult for bursting apart.In addition, because hard secter pat 2-1 has different wear resistance ratios with soft secter pat 2-2, therefore in use, its degree of wear also is not quite similar.Along with the increase of service time, the speed of soft secter pat 2-2 wearing and tearing will be faster than hard secter pat 2-1, and the surface of composite polycrystal-diamond and cutting edge profile line can form zigzag gradually like this.
Determine material and the size of hard secter pat 2-1 and soft secter pat 2-2 according to performance requirement.The wear resistance ratio of each hard secter pat 2-1 of the present invention and each soft secter pat 2-2 is between 10: 1～10: 9; The area of each hard secter pat 2-1 and each soft secter pat 2-2 is than between 1: 1～5: 1.The individual number average of forming the hard secter pat 2-1 of composite polycrystal-diamond main part of the present invention and soft secter pat 2-2 is between 6～12.In the preferred embodiment of the present invention, the main part of described polycrystalline diamond sheet is combined by 6 hard secter pat 2-1 and 6 soft secter pat 2-2, the wear resistance ratio of each hard secter pat 2-1 and each soft secter pat 2-2 is 10: 5, and the area ratio of each hard secter pat 2-1 and each soft secter pat 2-2 is 1: 1.
It is fan-shaped that the hard secter pat 2-1 of composition composite sheet body and soft secter pat 2-2 can be circular cone, and the intersection point of all secter pats is the center of composite sheet at this moment.But the phenomenon that converges for fear of the tip of a plurality of secter pats and cause the center fragility of composite polycrystal-diamond easily to be burst apart, in the preferred embodiment of the present invention, described composite sheet body also includes a hard cylindrical piece 2-3, to improve the intensity of composite sheet self.This hard cylindrical piece 2-3 is cylindric, and is positioned at the central authorities of composite sheet; This moment hard secter pat 2-1 and soft secter pat 2-2 to be round platform fan-shaped, and be provided with around this hard cylindrical piece 2-3.The hardness of the aggregate material that above-mentioned hard cylindrical piece 2-3 selects for use should be more than or equal to hard secter pat 2-1's.In the preferred embodiment of the present invention, described hard cylindrical piece 2-3 is identical with the wear resistance ratio of hard secter pat 2-1.
The upper surface of each hard secter pat 2-1 and each soft secter pat 2-2 can be plane.Like this when by the thickness of hard secter pat 2-1 and soft secter pat 2-2 when identical, the upper surface that hard secter pat 2-1 and soft secter pat 2-2 are constituted forms a horizontal plane, and when the thickness of hard secter pat 2-1 and soft secter pat 2-2 is inequality as considering later stage wearing and tearing, allow the thickness of soft secter pat 2-2 be slightly less than the thickness of hard secter pat 2-1 when producing, the upper surface that hard secter pat 2-1 and soft secter pat 2-2 are constituted forms the on-plane surface with a plurality of radial grooves.In order to break through the restriction of composite polycrystal-diamond self shape, length with its cutting edge profile line of further raising, in the preferred embodiment of the present invention, the upper surface of each hard secter pat 2-1 and/or each soft secter pat 2-2 all is the arc of epirelief, and the upper surface that polylith hard secter pat 2-1 and soft secter pat 2-2 are constituted forms the curved end of corrugated.Above-mentioned end face structure makes this polycrystalline diamond layer get the linear waveform curve that becomes around the polycrystalline diamond layer side surrounding of cutting edge profile, can increase the girth of the area of cut and cutting wheel profile like this, can reduce the angle on cutting edge profile and stratum again, thereby the ability that makes this polycrystalline diamond layer embed the stratum is higher than the circular composite sheet of same size.The upper surface curvature of each hard secter pat 2-1 and each soft secter pat 2-2 can identical, also can be inequality.In the utility model preferred embodiment, the upper surface of described hard secter pat 2-1 and soft secter pat 2-2 has same curvature.The upper surface junction of each hard secter pat 2-1 and each soft secter pat 2-2 can directly link to each other, and also can link to each other by a bit of lead-over groove that radially extends.This lead-over groove can be plane and/or recessed cambered surface, and in order further to prolong the length of cutting edge profile line, in the preferred embodiment of the present invention, all lead-over grooves are recessed cambered surface.
The upper surface of the composite sheet that the upper surface of above-mentioned hard secter pat 2-1 and soft secter pat 2-2 can directly constitute; but in order to alleviate composite polycrystal-diamond, the especially suffered impact of cutting edge profile line; described composite sheet body also includes the soft topping 1 of one deck; this soft topping 1 is in the composite sheet upper part of body, and its wear resistance ratio can be equal to or less than the wear resistance ratio of soft secter pat 2-2.The soffit of soft topping 1 combines with the upper surface that hard secter pat 2-1 and soft secter pat 2-2 constitute, and the upper surface of soft topping 1 can be the arcwall face or the plane of epirelief.Because the wear resistance ratio of soft topping 1; the performance parameters of anti-impact force and abrasion resistance is equal to or is lower than the main part of composite polycrystal-diamond; it is the relevant parameter of hard secter pat 2-1 and soft secter pat 2-2; therefore the rate of wear of soft topping 1 will be higher than the main part of composite polycrystal-diamond; in the process of drill bit test or cutting; polycrystalline diamond main part branch reveals gradually; not only can strengthen the abrasion resistance and the stability of composite polycrystal-diamond like this; also can avoid simultaneously the stratum crushing particle to embed the junction of two continuous secter pats; improve the self-cleaning property of drill bit, finally allow the drilling efficiency of drill bit and application life increase greatly.
The soffit of above-mentioned hard secter pat 2-1 and soft secter pat 2-2 can directly constitute the lower surface of composite polycrystal-diamond, and links to each other with hard alloy substrate.But in order to improve the adhesion between composite polycrystal-diamond and the hard alloy substrate, described composite sheet body also includes one deck hard cylindrical piece 3, this hard cylindrical piece 3 is in the bottom of composite sheet body, and its wear resistance ratio is identical with the wear resistance ratio of hard secter pat 2-1.The upper surface of hard cylindrical piece 3 combines with the soffit that hard secter pat 2-1 and soft secter pat 2-2 constitute, and the soffit of hard cylindrical piece 3 links to each other with the hard alloy substrate upper surface.Hard cylindrical piece 3 can be the plane with the hard alloy substrate bonding surface; Or on both bonding surfaces, cooperatively interact be provided with depression and projection, form the non-regular face have groove, aperture or pit etc.
Claims (10)
1. high speed composite polycrystal-diamond, the composite sheet body that comprises the disk shape, it is characterized in that: described composite sheet body mainly is composited by polylith hard secter pat (2-1) and the soft secter pat of polylith (2-2), wherein hard secter pat (2-1) and soft secter pat (2-2) all are fan-shaped, and have different wear resistance ratios between the two; Hard secter pat (2-1) and soft secter pat (2-2) space that polylith has phase concentric and radius are provided with, and constitute a disk of finishing jointly; Wherein have different wear resistance ratios between two adjacent secter pats, two have identical wear resistance ratio separately between the secter pat.
2. high speed composite polycrystal-diamond according to claim 1 is characterized in that: described composite sheet body also includes a hard cylindrical piece (2-3); This hard cylindrical piece (2-3) is cylindric, and is positioned at the central authorities of composite sheet body; Hard secter pat (2-1) and soft secter pat (2-2) all are provided with around this hard cylindrical piece (2-3).
3. high speed composite polycrystal-diamond according to claim 2 is characterized in that: described hard cylindrical piece (2-3) is identical with the wear resistance ratio of hard secter pat (2-1).
4. according to any described high speed composite polycrystal-diamond in the claim 1～3, it is characterized in that: the upper surface of each hard secter pat (2-1) and/or each soft secter pat (2-2) all is the arc of epirelief, and the upper surface that polylith hard secter pat (2-1) and the soft secter pat of polylith (2-2) are constituted forms the curved end of corrugated.
5. high speed composite polycrystal-diamond according to claim 4 is characterized in that: described composite sheet upper part of body also includes the soft topping of one deck (1).
6. high speed composite polycrystal-diamond according to claim 5 is characterized in that: the wear resistance ratio of soft topping (1) is less than the wear resistance ratio of soft secter pat (2-2).
7. according to any described high speed composite polycrystal-diamond in the claim 1～3, it is characterized in that: the bottom of described composite sheet body also includes one deck hard cylindrical piece (3).
8. according to any described high speed composite polycrystal-diamond in the claim 7, it is characterized in that: hard cylindrical piece (3) is identical with the wear resistance ratio of hard secter pat (2-1).
9. high speed composite polycrystal-diamond according to claim 1 is characterized in that: the wear resistance ratio of hard secter pat (2-1) and soft secter pat (2-2) is between 10: 1～10: 9.
10. high speed composite polycrystal-diamond according to claim 1 is characterized in that: the area of hard secter pat (2-1) and soft secter pat (2-2) is than between 1: 1～5: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110193055 CN102296931B (en) | 2011-07-11 | 2011-07-11 | High-speed polycrystalline diamond compact sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110193055 CN102296931B (en) | 2011-07-11 | 2011-07-11 | High-speed polycrystalline diamond compact sheet |
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| Publication Number | Publication Date |
|---|---|
| CN102296931A true CN102296931A (en) | 2011-12-28 |
| CN102296931B CN102296931B (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110193055 Active CN102296931B (en) | 2011-07-11 | 2011-07-11 | High-speed polycrystalline diamond compact sheet |
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| CN (1) | CN102296931B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128956A1 (en) * | 2017-12-26 | 2019-07-04 | 中石化江钻石油机械有限公司 | Diamond composite plate and drill bit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2261894A (en) * | 1991-11-30 | 1993-06-02 | Camco Drilling Group Ltd | Improvements in or relating to cutting elements for rotary drill bits |
| US5564511A (en) * | 1995-05-15 | 1996-10-15 | Frushour; Robert H. | Composite polycrystalline compact with improved fracture and delamination resistance |
| US5871060A (en) * | 1997-02-20 | 1999-02-16 | Jensen; Kenneth M. | Attachment geometry for non-planar drill inserts |
| US5979578A (en) * | 1997-06-05 | 1999-11-09 | Smith International, Inc. | Multi-layer, multi-grade multiple cutting surface PDC cutter |
| CN2392909Y (en) * | 1999-07-14 | 2000-08-23 | 郑州新亚复合超硬材料有限公司 | Diamond/hard alloy compounded sheet |
| GB2463975A (en) * | 2008-10-03 | 2010-04-07 | Smith International | Diamond bonded construction with thermally stable region |
| CN201802316U (en) * | 2010-07-08 | 2011-04-20 | 深圳市海明润实业有限公司 | PDC (polycrystalline diamond compact) drilling teeth with layer interface adopting composite structure |
| CN202187718U (en) * | 2011-07-11 | 2012-04-11 | 桂林星钻超硬材料有限公司 | High-speed polycrystalline diamond compact |
-
2011
- 2011-07-11 CN CN 201110193055 patent/CN102296931B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2261894A (en) * | 1991-11-30 | 1993-06-02 | Camco Drilling Group Ltd | Improvements in or relating to cutting elements for rotary drill bits |
| US5564511A (en) * | 1995-05-15 | 1996-10-15 | Frushour; Robert H. | Composite polycrystalline compact with improved fracture and delamination resistance |
| US5871060A (en) * | 1997-02-20 | 1999-02-16 | Jensen; Kenneth M. | Attachment geometry for non-planar drill inserts |
| US5979578A (en) * | 1997-06-05 | 1999-11-09 | Smith International, Inc. | Multi-layer, multi-grade multiple cutting surface PDC cutter |
| CN2392909Y (en) * | 1999-07-14 | 2000-08-23 | 郑州新亚复合超硬材料有限公司 | Diamond/hard alloy compounded sheet |
| GB2463975A (en) * | 2008-10-03 | 2010-04-07 | Smith International | Diamond bonded construction with thermally stable region |
| CN201802316U (en) * | 2010-07-08 | 2011-04-20 | 深圳市海明润实业有限公司 | PDC (polycrystalline diamond compact) drilling teeth with layer interface adopting composite structure |
| CN202187718U (en) * | 2011-07-11 | 2012-04-11 | 桂林星钻超硬材料有限公司 | High-speed polycrystalline diamond compact |
Non-Patent Citations (1)
| Title |
|---|
| 俞锁: "补脑的中药", 《师道》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128956A1 (en) * | 2017-12-26 | 2019-07-04 | 中石化江钻石油机械有限公司 | Diamond composite plate and drill bit |
| US11391095B2 (en) | 2017-12-26 | 2022-07-19 | Kingdream Public Limited Company | Polycrystalline diamond compact and drilling bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102296931B (en) | 2013-08-21 |
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