CN205422548U - High impact resistance polycrystalline diamond compact - Google Patents
High impact resistance polycrystalline diamond compact Download PDFInfo
- Publication number
- CN205422548U CN205422548U CN201521090622.4U CN201521090622U CN205422548U CN 205422548 U CN205422548 U CN 205422548U CN 201521090622 U CN201521090622 U CN 201521090622U CN 205422548 U CN205422548 U CN 205422548U
- Authority
- CN
- China
- Prior art keywords
- boss
- polycrystalline diamond
- hard alloy
- layer
- diamond layer
- 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.)
- Active
Links
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model aims at providing a high impact resistance polycrystalline diamond compact, including polycrystalline diamond layer and hard alloy layer, wherein, the polycrystalline diamond layer adopts diamond powder to add the binder and cemented carbide substrate sintering under high temperature high pressure condition forms, cemented carbide substrate be cylindrical, one of them terminal surface is the plane, another terminal surface closes with the polycrystalline diamond stacking, the center is the boss form, central boss department passes through for the circular arc with edge combination department for cylindrical. The utility model discloses can increase in the compound piece combination area of diamond layer and alloy -layer, improve the combination mode, reduce the stress of interface edge, and then improve compound piece impact toughness.
Description
Technical field
This utility model belongs to superhard material field, is specifically related to a kind of high impact-resistant composite polycrystal-diamond.
Background technology
Composite polycrystal-diamond (hereinafter referred to as " composite sheet ") is added bonding agent by diamond dust and sinters under the conditions of superhigh-temperature and-pressure with hard alloy substrate and to form.The high rigidity of existing diamond, the characteristics such as high abrasion, there is again the high intensity of hard alloy, toughness and good weldability, be cutting element and the wear resistant tools material of a kind of brilliance, be widely used in the numerous areas such as petroleum gas, coal, geological drilling.
Along with the development of probing production industry, the probing durability of exploitation instrument, drilling efficiency, operating cost etc. are had higher requirement.Composite sheet is mainly characterized by performance indications such as wearability, impact resistance, thermostabilitys as primary cutting element, the good and bad of performance.Wherein, shock resistance is the restraining factors of composite polycrystal-diamond further genralrlization application.Prove through theory and practice, in addition to can changing shock resistance by change diamond grit, content, effectively drop stress concentration also by rationally changing alloy with diamond interface shape, thus improve the impact resistance of composite sheet.
Manufacturing in early days in composite sheet, diamond layer and alloy junction are all planar structures, and this structure can cause that edge stress is excessive causes composite sheet diamond layer and hard alloy substrate separating delamination phenomenon in use occur.The geometries such as nonplanar structure such as groove, projection, boss, can increase bonded area, increase diamond layer and the bond strength of hard alloy, improve the shock resistance of composite sheet.
Utility model content:
The purpose of this utility model is to provide a kind of New polycrystal diamond composite sheet, improve the interface cohesion shape of diamond layer and hard alloy, diamond layer and the bonded area of alloy substrate in composite sheet can be increased, reduce the stress of junction, edge, improve the toughness of composite sheet.
For reaching above-mentioned purpose, the concrete scheme of employing is as follows:
A kind of high impact-resistant composite polycrystal-diamond, including polycrystalline diamond layer and hard alloy layer, wherein, polycrystalline diamond layer uses diamond dust interpolation binding agent to sinter under high-temperature and high-pressure conditions with hard alloy substrate and forms；Described hard alloy substrate is cylinder, and one of them end face is plane, and other end is combined with polycrystalline diamond layer, and center is boss-shaped, is cylindrical, is arc transition with junction, edge at central boss.
Further, described central boss has the small boss that many places are uniform, and shape can be square, circle or rectangle etc., and above-mentioned variously-shaped small boss bottom surface is arc transition.
Further, described central boss quantity is 1 to 3 rank, and every rank boss height is between 0.3-0.6mm, and round boss external diameter is the 75-90% of hard alloy external diameter.
Further, described small boss is uniform distribution centered by the cylinder boss center of circle, and small boss height is between 0.6-1.0mm, and side and bottom surface angle are 60-80 °, and transition position all uses arc transition.
The utility model has the advantage of: central boss is provided with small boss, make polycrystalline diamond layer engage each other with hard alloy substrate, significantly increase the bonded area of the two；Boss bottom surface is arc transition, reduces stress and concentrates situation, and cylinder boss reduces the stress at jointing edge, can be effectively improved the impact resistance that composite sheet is overall.
Accompanying drawing illustrates:
Fig. 1 is the outline drawing of composite polycrystal-diamond in this utility model；
Fig. 2 is hard alloy substrate outline drawing in this utility model；
Fig. 3 is hard alloy substrate front view in this utility model.
Detailed description of the invention:
Below in conjunction with the accompanying drawings this utility model is further described.
As depicted in figs. 1 and 2, a kind of high impact-resistant composite polycrystal-diamond, including polycrystalline diamond layer 1 and hard alloy layer 2, this structure uses diamond dust interpolation binding agent to sinter under high-temperature and high-pressure conditions with hard alloy substrate and forms.Hard alloy substrate 2 entirety is cylinder, and one of them end face is plane, and other end is combined with polycrystalline diamond layer 1.
As it is shown on figure 3, hard alloy layer is divided into two-layer, centered by upper strata mesa-shaped 11, be the cylinder of rule, be arc transition with the junction, hard alloy basal plane 10 edge of lower floor at central boss 11.Boss is provided with the square small boss 12 that many places are uniform, and small boss 12 end face is less than bottom surface, is shaped like in stage body, and small boss 12 bottom surface is arc transition with the junction of central boss 11.Several small boss 12 being provided with in central boss 11 are symmetrical relative to centrage.
Finding after using drop hammer impact testing machine to carry out shock resistance detection, this utility model can bear the impact energy of 60J, and the impact energy that reference examples ordinary construction composite sheet can be born is that 40J i.e. damages.
Claims (1)
1. a high impact-resistant composite polycrystal-diamond, including polycrystalline diamond layer and hard alloy layer, it is characterised in that: polycrystalline diamond layer uses diamond dust interpolation binding agent to sinter under high-temperature and high-pressure conditions with hard alloy substrate and forms；Described hard alloy substrate is cylinder, and one of them end face is plane, and other end is combined with polycrystalline diamond layer, and center is boss-shaped, is cylindrical, is arc transition with junction, edge at central boss；Described central boss has the small boss that many places are uniform, and shape can be square, circular or rectangle, and above-mentioned variously-shaped small boss bottom surface is arc transition；Described central boss quantity is 1 to 3 rank, and every rank boss height is between 0.3-0.6mm, and round boss external diameter is the 75-90% of hard alloy external diameter；Described small boss is uniform distribution centered by the cylinder boss center of circle, and small boss height is between 0.6-1.0mm, and side and bottom surface angle are 60-80 °, and transition position all uses arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090622.4U CN205422548U (en) | 2015-12-24 | 2015-12-24 | High impact resistance polycrystalline diamond compact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090622.4U CN205422548U (en) | 2015-12-24 | 2015-12-24 | High impact resistance polycrystalline diamond compact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205422548U true CN205422548U (en) | 2016-08-03 |
Family
ID=56539032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521090622.4U Active CN205422548U (en) | 2015-12-24 | 2015-12-24 | High impact resistance polycrystalline diamond compact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205422548U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular 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 |
| USD1026980S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface and groove therein |
| USD1026981S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a tripartite raised surface |
-
2015
- 2015-12-24 CN CN201521090622.4U patent/CN205422548U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11772977B2 (en) | 2019-07-10 | 2023-10-03 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom |
| USD997219S1 (en) | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
| USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular 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 |
| USD1026980S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface and groove therein |
| USD1026981S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a tripartite raised surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205422548U (en) | High impact resistance polycrystalline diamond compact | |
| CN106460465B (en) | Cutting element having non-planar surface and downhole cutting tool employing same | |
| CN206870494U (en) | A kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface | |
| CN204729011U (en) | A kind of low cutting resistance curved-surface structure composite polycrystal-diamond | |
| CN205850990U (en) | A kind of tooth header structure of lithotrite | |
| CN201372731Y (en) | Strengthened composite diamond segment | |
| CN201209404Y (en) | Diamond compact of built-in buffer layer | |
| CN202788628U (en) | Polycrystalline diamond compact (PDC) bit tooth | |
| CN202467669U (en) | Basal body for forming polycrystalline diamond composite sheet | |
| CN101195256B (en) | Diamond bead with curve or stepped configuration | |
| CN205135428U (en) | Compound piece of synthetic superhard materials | |
| CN202480460U (en) | Substrate capable of enhancing structure of polycrystalline diamond compact | |
| CN203961977U (en) | A kind of diamond composite cutter bit | |
| CN202451062U (en) | Sinusoidal diamond hard alloy composite sheet | |
| CN202970486U (en) | Thermal arrest polycrystalline diamond clad sheet | |
| CN209240279U (en) | A kind of novel mould-free forming diamond bead | |
| CN201824590U (en) | Ultra-hard composite piece adopting hard alloy substrate | |
| CN206592075U (en) | A kind of composite polycrystal-diamond of high-fire resistance energy | |
| CN202467670U (en) | Substrate of polycrystalline diamond compact | |
| CN204941357U (en) | A kind of Superhard composite materials | |
| CN204139979U (en) | Shock resistance diamond hard alloy complex sheet | |
| CN202689984U (en) | Intercommunicating and fishing integrated tool | |
| CN2921526Y (en) | High impact resisting liner ceramic composite bend | |
| CN219618636U (en) | Convex spherical diamond compact | |
| CN202348283U (en) | Abrasion-proof cutting pick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |