CN101280666A - Polycrystal diamond hard alloy complex sheet of surface groove with lack Co area - Google Patents
Polycrystal diamond hard alloy complex sheet of surface groove with lack Co area Download PDFInfo
- Publication number
- CN101280666A CN101280666A CNA200810049957XA CN200810049957A CN101280666A CN 101280666 A CN101280666 A CN 101280666A CN A200810049957X A CNA200810049957X A CN A200810049957XA CN 200810049957 A CN200810049957 A CN 200810049957A CN 101280666 A CN101280666 A CN 101280666A
- Authority
- CN
- China
- Prior art keywords
- diamond
- hard alloy
- district
- layer
- polycrystalline diamond
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses a carbide composite tablet of polycrystalline diamond with Co deficient areas and a grooved surface, which includes a carbide layer and a polycrystalline diamond layer; the carbide layer consists of a carbide (usually adopting tungsten carbide: WC) and a bonding agent (usually adopting Co), and a polycrystalline diamond layer consists of a diamond and a catalytic binder (usually adopting Co). The surface of the diamond is engraved with grooves, wherein, the engraved grooves divide the diamond layer into a plurality of platforms. Through the process of removing Co, Co deficient areas are formed on the engraved grooves or the platforms of the polycrystalline diamond layer or on both. The carbide composite tablet of polycrystalline diamond of the invention is increased by 1-2 times in abrasion ratio; under the same size of impact force, the break-off area of the diamond layer can be reduced by 50 to 80 percent, and the composite tablet of the invention can greatly improve the use temperature of carbide composite tablet of polycrystalline diamond, and the use temperature can be improved to at least 100 DEG C, thus enlarging the scope of use temperature and enabling the composite tablet to be used under higher abrasion speed.
Description
Technical field:
The present invention relates to the superhard material field, relate in particular to the polycrystal diamond hard alloy complex sheet of probing such as a kind of oil drilling with the surface groove that scarce Co district is arranged.
Background technology:
Polycrystal diamond hard alloy complex sheet is composited by the polycrystalline diamond layer on top layer and the WC-Co hard alloy layer HTHP of bottom, diamond layer generally contains the diamond of 80-95vol% and the catalysis binding material of 5-20vol% is formed, the most frequently used catalysis binding material is cobalt (Co), in general, Co content reduces, and can improve the abrasion resistance of composite sheet; The important function of Co in composite sheet synthetic is to promote the sintering of diamond dust and make diamond dust form continuous integral body, and Co is embedded between the diamond particles as the granule that disperses.But,,, just may cause composite sheet crackle and cracking to occur if serviceability temperature surpasses 400 ℃ because coefficient of thermal expansion and the diamond of Co differ bigger; Surpass 750 ℃ and work as temperature, because the catalytic action of Co, diamond will begin graphitization and composite sheet was lost efficacy.
In order to address this problem, obtain the polycrystal diamond hard alloy complex sheet of " thermally-stabilised ", the researcher has proposed following certain methods: use Si replaced C o, form the SiC that does not have catalytic action in the building-up process, improve " thermally-stabilised " performance; Use the carbonate of Mg, Ca, Sr and Ba; United States Patent (USP) (US 4224380) disclose a kind of Co from the diamond relative density less than the method that extracts 80% the diamond layer, if but the diamond relative density greater than 80%, this method is not easy Co is extracted.Some problems of these methods existence more or less can not thoroughly be improved the heat stability of composite sheet on the basis that does not lose other performances.Recently, United States Patent (USP) (US 6592985 B2) has adopted a kind of whole diamond layer surface that makes at least in the 0.1mm degree of depth district, and the method that Co content reduces significantly can keep the composite sheet mechanical performance, can improve the heat stability of composite sheet again.Therefore, this patent has proposed a kind of feasible method to the raising of polycrystal diamond hard alloy complex sheet combination property.
Summary of the invention:
The objective of the invention is shortcoming at existing polycrystal diamond hard alloy complex sheet, provide a kind of and both can delay cracks can spread in the polycrystal diamond hard alloy complex sheet, can increase the polycrystal diamond hard alloy complex sheet of the surface groove that scarce Co district is arranged of its " thermally-stabilised " performance again.
Technical scheme of the present invention realizes with following method:
A kind of polycrystal diamond hard alloy complex sheet that the surface groove in scarce Co district is arranged comprises hard alloy layer and polycrystalline diamond layer; (be generally tungsten carbide-WC) and binding material (being generally Co) and form, then be made up of diamond and catalysis cementing agent (being generally Co) by polycrystalline diamond layer by carbide for hard alloy layer; Delineation has cutting on the diamond layer surface, and wherein, these cuttings are divided into some platforms with diamond layer, by going Co technology, forms scarce Co district on polycrystalline diamond layer.
The whole diamond layer surface that comprises cutting inner surface and platform is for lacking the Co district.
Described cutting inner surface is for lacking the Co district.
Platform surface on the described polycrystalline diamond layer between adjacent two cuttings is partly for lacking the Co district.
The described polycrystal diamond hard alloy complex sheet that the surface groove in scarce Co district is arranged sometimes for needs, lacks the Co district and can reach hard alloy layer deeply.
The manufacture method of the polycrystal diamond hard alloy complex sheet of the described surface groove that scarce Co district arranged:
At first, cutting, cutting on polycrystalline diamond layer can be divided into the diamond surface of polycrystal diamond hard alloy complex sheet the platform that some can hinder cracks can spread by cutting, and these cuttings can be used as the passage of removing Co in the diamond layer, platform, cutting wall are formed lack the Co district.These scarce Co districts can outwards expand, and will form the scarce Co district that comprises diamond surface on a large scale.
Then, handle, will not need the part of Co to cover processing on the polycrystal diamond hard alloy complex sheet.
At last, remove Co, the technology of removing Co is liquid phase method, when adopting aciding in the liquid phase method to remove Co, polycrystal diamond hard alloy complex sheet is immersed in removes Co in the liquid.According to the composition proportion of Immersion time and liquid phase, can control the degree of depth and the speed in Co district.Wherein the prescription of the used liquid of aciding in the liquid phase method is as follows: HNO
3: 10-20vol%; HCl:40-60vol%; Water: surplus; So on cutting, platform or the cutting of polycrystalline diamond layer and platform, form and lack the Co district.
Good effect of the present invention is:
This have the polycrystal diamond hard alloy complex sheet of the surface groove in scarce Co district to have following advantage:
1, wear resistance ratio increases 1-2 doubly;
2, when the impact that stands identical size, the composite sheet diamond layer area that comes off has reduced 50-80%;
3, can increase substantially the serviceability temperature of polycrystal diamond hard alloy complex sheet.After removing Co, the Co between the diamond particles is corroded, and the content of this zone C o significantly reduces, and the composite sheet serviceability temperature can be mentioned at least 100 ℃, has increased the serviceability temperature scope, and composite sheet is used under higher grinding speed;
4, because the removal of Co can be the center with the cutting, lack Co district and will go deep into the diamond layer depths more, it is bigger to have a scarce Co district wear-resisting, that have better " thermally-stabilised "; The existence of cutting, can hinder the expansion of micro-crack, increase the application life of polycrystal diamond hard alloy complex sheet, the internal stress that polycrystal diamond hard alloy complex sheet is formed in synthetic obtains discharging and adjusting, and prevents the cracking of diamond layer and hard alloy layer; The abrasion resistance that lacks Co district PCD polycrystalline diamond layer improves more than 1 times than the normal region, lacks the Co district around the cutting and participates in grinding, has changed the situation of diamond layer grinding, can form pears and cut effect, increases the efficient of grinding; By the technological design of cutting and surface removal Co, can obtain the reasonable distribution of required Co at diamond layer, improve the combination property of diamond compact.
Description of drawings:
Fig. 1 is for comprising on the polycrystalline diamond layer of the present invention that scored surface and platform surface all are the structural representation that lacks the Co district.
Fig. 2 is that scored surface is the structural representation in scarce Co district on the polycrystalline diamond layer of the present invention.
Fig. 3 is that polycrystalline diamond layer upper mounting plate of the present invention surface is for lacking the structural representation in Co district.
The specific embodiment:
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is further described:
As shown in Figure 1, the polycrystal diamond hard alloy complex sheet of being made up of hard alloy layer 1 and diamond layer 2 that will have a cutting 4 is immersed in by HNO
3: 10vol%; HCl:40vol%; Water: in the solution that surplus is configured to, carry out after chemical reaction takes off Co, formed the scarce Co district 5 on the whole diamond layer surface that comprises platform 3 surfaces between cutting 4 surfaces and the adjacent cutting.
Embodiment 2,
As shown in Figure 2, by covering, make polycrystal diamond hard alloy complex sheet have only cutting 4 parts to expose out, then it is immersed in by HNO at the polycrystal diamond hard alloy complex sheet of forming by hard alloy layer 1 and diamond layer 2
3: 15vol%; HCl:45vol%; Water: in the solution that surplus is configured to, carry out after chemical reaction takes off Co, form the scarce Co district 5 of cutting 4 inner surfaces.
As shown in Figure 3, by certain way cutting 4 is covered, make the composite polycrystal-diamond surface not have the part of cutting to expose out, then it is immersed in by HNO at the polycrystal diamond hard alloy complex sheet of forming by hard alloy layer 1 and polycrystalline diamond layer 2
3: 20vol%; HCl:50vol%; Water: in the solution that surplus is configured to, carry out after chemical reaction takes off Co, platform 3 surface portions of 4 of adjacent two cuttings on the polycrystalline diamond layer are formed lack Co district 5.
Claims (5)
1, a kind of polycrystal diamond hard alloy complex sheet that the surface groove in scarce cobalt district is arranged comprises hard alloy layer (1) and polycrystalline diamond layer (2); (be generally tungsten carbide-WC) and binding material (being generally Co) and form, then be made up of diamond and catalysis cementing agent (being generally Co) by polycrystalline diamond layer (2) by carbide for hard alloy layer (1); Delineation has cutting (4) on the diamond layer surface, and it is characterized in that: these cuttings are divided into some platforms (3) with diamond layer, by going Co technology, is having the polycrystalline diamond layer of cutting (2) to go up the scarce Co district (5) of formation.
2, the polycrystal diamond hard alloy complex sheet that the surface groove in scarce cobalt district is arranged according to claim 1 is characterized in that: the whole polycrystalline diamond laminar surface that comprises cutting (4) inner surface and platform (3) is for lacking Co district (5).
3, the polycrystal diamond hard alloy complex sheet that the surface groove in scarce cobalt district is arranged according to claim 1 is characterized in that: cutting (4) inner surface is for lacking Co district (5).
4, the polycrystal diamond hard alloy complex sheet that the surface groove in scarce cobalt district is arranged according to claim 1 is characterized in that: platform (3) surface portion between last adjacent two cuttings of polycrystalline diamond layer (2) (4) is for lacking Co district (5).
5, the manufacture method of the polycrystal diamond hard alloy complex sheet of the surface groove that scarce cobalt district arranged according to claim 1, it is characterized in that: at first, cutting on polycrystalline diamond layer can form some platforms with the polycrystalline diamond laminar surface of polycrystal diamond hard alloy complex sheet by cutting; Then, will not need the part of Co to cover processing on the polycrystal diamond hard alloy complex sheet; At last, remove Co, go the technology of Co to can be liquid phase method, wherein the prescription of the used liquid of aciding in the liquid phase method is as follows: HNO
3: 10-20vol%; HCl:40-60vol%; Water: surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810049957XA CN101280666A (en) | 2008-06-04 | 2008-06-04 | Polycrystal diamond hard alloy complex sheet of surface groove with lack Co area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810049957XA CN101280666A (en) | 2008-06-04 | 2008-06-04 | Polycrystal diamond hard alloy complex sheet of surface groove with lack Co area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101280666A true CN101280666A (en) | 2008-10-08 |
Family
ID=40013313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810049957XA Pending CN101280666A (en) | 2008-06-04 | 2008-06-04 | Polycrystal diamond hard alloy complex sheet of surface groove with lack Co area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101280666A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725324B (en) * | 2009-11-26 | 2012-02-29 | 中国地质大学（武汉） | Hot pressing diamond bit and manufacturing method thereof |
| CN101852065B (en) * | 2010-05-14 | 2012-08-29 | 苏州新锐硬质合金有限公司 | Diamond compact substrate |
| CN103813998A (en) * | 2011-07-18 | 2014-05-21 | 六号元素磨料股份有限公司 | Cutter structures, inserts comprising same and method for making same |
| CN104690274A (en) * | 2014-12-31 | 2015-06-10 | 江汉石油钻头股份有限公司 | PCD (polycrystalline diamond)-cemented carbide compact as well as preparation method thereof |
| CN105134086A (en) * | 2015-08-18 | 2015-12-09 | 中国石油大学(华东) | Polycrystalline diamond compact with anti-adhesion characteristic |
| CN111997530A (en) * | 2020-09-15 | 2020-11-27 | 广东钜鑫新材料科技股份有限公司 | Artificial diamond hard alloy composite sheet |
| USD997219S1 (en) | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
| US11772977B2 (en) | 2019-07-10 | 2023-10-03 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom |
| USD1006073S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface sloping to a peripheral extension |
| USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular structure |
| USD1026981S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a tripartite raised surface |
| USD1026980S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface and groove therein |
-
2008
- 2008-06-04 CN CNA200810049957XA patent/CN101280666A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725324B (en) * | 2009-11-26 | 2012-02-29 | 中国地质大学（武汉） | Hot pressing diamond bit and manufacturing method thereof |
| CN101852065B (en) * | 2010-05-14 | 2012-08-29 | 苏州新锐硬质合金有限公司 | Diamond compact substrate |
| CN103813998B (en) * | 2011-07-18 | 2016-08-17 | 六号元素磨料股份有限公司 | Cutter structure body, the mold insert comprising it and manufacture method thereof |
| CN103813998A (en) * | 2011-07-18 | 2014-05-21 | 六号元素磨料股份有限公司 | Cutter structures, inserts comprising same and method for making same |
| US9095918B2 (en) | 2011-07-18 | 2015-08-04 | Element Six Abrasives S.A | Cutter structures, inserts comprising same and method for making same |
| CN104690274A (en) * | 2014-12-31 | 2015-06-10 | 江汉石油钻头股份有限公司 | PCD (polycrystalline diamond)-cemented carbide compact as well as preparation method thereof |
| CN105134086A (en) * | 2015-08-18 | 2015-12-09 | 中国石油大学(华东) | Polycrystalline diamond compact with anti-adhesion characteristic |
| US11772977B2 (en) | 2019-07-10 | 2023-10-03 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom |
| CN111997530A (en) * | 2020-09-15 | 2020-11-27 | 广东钜鑫新材料科技股份有限公司 | Artificial diamond hard alloy composite sheet |
| CN111997530B (en) * | 2020-09-15 | 2024-06-25 | 广东钜鑫新材料科技股份有限公司 | Artificial diamond hard alloy composite sheet |
| USD997219S1 (en) | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
| USD1006073S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface sloping to a peripheral extension |
| USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular structure |
| USD1026981S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a tripartite raised surface |
| USD1026980S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface and groove therein |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101280666A (en) | Polycrystal diamond hard alloy complex sheet of surface groove with lack Co area | |
| JP4903134B2 (en) | Cutting tool insert | |
| JP5208419B2 (en) | Polishing element of polycrystalline diamond | |
| JP4739228B2 (en) | Polycrystalline diamond polishing element | |
| EP0635326B1 (en) | Abrasive tool insert | |
| US6592985B2 (en) | Polycrystalline diamond partially depleted of catalyzing material | |
| US8197936B2 (en) | Cutting structures | |
| EP0918135B1 (en) | Polycrystalline diamond compact (pdc) cutter with improved cutting capability | |
| US7628234B2 (en) | Thermally stable ultra-hard polycrystalline materials and compacts | |
| CN1206188C (en) | Polycrystalline diamond with surface depleted of catalyzing material | |
| EP0794314A1 (en) | An improved abrasive cutting element and drill bit | |
| US20060191723A1 (en) | Thermally stable polycrystalline diamond materials, cutting elements incorporating the same and bits incorporating such cutting elements | |
| US20110212303A1 (en) | PDC Cutter with Stress Diffusing Structures | |
| RU2560005C2 (en) | Functionally leached cutting pcd-element | |
| CN103608544A (en) | Selectively leached cutter | |
| CN101823164A (en) | Cutting element | |
| US20150151362A1 (en) | Cutting inserts and method for making same | |
| JP2007501133A5 (en) | ||
| CN104540621A (en) | Polycrystalline superhard material and method for making same | |
| CN102189389A (en) | Composite cutter substrate to mitigate residual stress | |
| AU2001274230A1 (en) | Polycrystalline diamond with a surface depleted of catalyzing material | |
| CN108368727B (en) | Cutting element formed from a combination of materials and drill bit including the same | |
| RU2270820C2 (en) | Polycrystalline diamond with catalytic material-depleted surface | |
| CN106489017B (en) | The method of earth-boring tools, the cutting element for earth-boring tools and formation pit shaft | |
| WO2016065018A1 (en) | Polycrystalline diamond-metal composite structures and method of manufacture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20081008 |