CN206870494U - A kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface - Google Patents
A kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface Download PDFInfo
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- CN206870494U CN206870494U CN201720607973.0U CN201720607973U CN206870494U CN 206870494 U CN206870494 U CN 206870494U CN 201720607973 U CN201720607973 U CN 201720607973U CN 206870494 U CN206870494 U CN 206870494U
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Abstract
The utility model provides a kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface, including diamond layer, hard alloy layer and interface, the interface includes inner surface, intermediate surface and outer surface, inner surface is circular flat, intermediate surface extends upwardly to outer surface outside being tilted towards less than inner surface junction, outer surface is highly higher than the height of inner surface, and the intermediate surface and outer surface are conformed with structure.The utility model composite sheet, the interface cohesion shape of diamond layer and hard alloy substrate layer is improved, the bonded area of diamond layer and alloy substrate in composite sheet can be increased, reduce the stress of edge junction, improve the toughness of composite sheet.
Description
Technical field
The utility model belongs to superhard material field, and in particular to a kind of high impact-resistant with optimization carbide interface
Composite polycrystal-diamond.
Background technology
Composite polycrystal-diamond（Hereinafter referred to as " composite sheet "）It is to be closed by diamond dust addition bonding agent with hard
Auri body is sintered under the conditions of superhigh-temperature and-pressure and formed, and is a kind of remarkable cutting element and wear resistant tools material, extensively
Applied to numerous areas such as oil, coal, geological drilling, machinings.
With the development of probing production industry, drilling depth is more and more deeper, and stratum is more and more harder, and drilling environment is more multiple
It is miscellaneous.Higher requirement is proposed to the durability of probing exploitation instrument, drilling efficiency, operating cost etc..Composite sheet is as main
Cutting element, its performance are mainly characterized by performance indications such as wearability, impact resistance, heat resistances.Wherein, shock resistance
It is the restraining factors of composite polycrystal-diamond further genralrlization application.Proved by theory and practice, except by changing Buddha's warrior attendant
Stone granularity, binder content can change outside impact resistance, can also be effective by rationally changing alloy and diamond interface shape
Stress concentration is reduced, improves the impact resistance of composite sheet.
Early stage is manufactured in composite sheet, diamond layer and alloy junction are planar structures, and this structure can cause edge
Position stress is excessive to cause composite sheet to occur diamond layer and hard alloy substrate separating delamination phenomenon in use.It is non-flat
The face structure such as geometry such as serrated slot, projection, boss, can increase bonded area, increase diamond layer and hard alloy
Bond strength, improve the shock resistance of composite sheet.Wherein diamond layer and carbide interface include many nonplanar natures,
It is intended to improve mechanical bond and reduces thermal induction residual stress.However, those are designed near diamond surface and critical surface still
High stretching residual stress so be present and high potential impact ripple destroys.
Thus, it will be seen that the high impact-resistant polycrystalline diamond for needing more optimization carbide interface shape is compound
Piece is crept into for different rock-layers.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of high impact-resistant with optimization carbide interface
Composite polycrystal-diamond.The utility model composite sheet, improve the interface of diamond layer and hard alloy substrate layer（Following letter
Referred to as " interface "）With reference to shape, the bonded area of diamond layer and alloy substrate in composite sheet can be increased, edge is reduced and combine
The stress at place, improve the toughness of composite sheet.
The purpose of this utility model is achieved through the following technical solutions：
A kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface, including diamond layer, hard
Alloy-layer and interface, the interface include inner surface, intermediate surface and outer surface, and inner surface is circular flat, intermediate surface from
It is tilted towards extending upwardly to outer surface outside less than inner surface junction, outer surface is highly higher than the height of inner surface, the centre
Surface and outer surface are conformed with structure.
Further, the inner surface radius is the 1/6-1/5 of composite sheet radius, and intermediate surface width is composite sheet radius
2/5-3/5, outer surface width are the 1/6-1/5 of composite sheet radius.
Further, the intermediate surface along level angle A from less than inner surface junction be tilted towards it is outer upwards, the level
Angle A is 1 ° -7 °.
Further, the level angle A is 1 ° -3 °.
Further, the intermediate surface and outer surface have cylindrical protrusion, for increasing bonded area.
Further, the intermediate surface has cylindrical protrusion, and outer surface has trapezoidal protrusion.
Further, the intermediate surface has the geometry of annular projection, and outer surface is cylindrical protrusion.
Further, the cylindrical protrusion is highly 0.2-1.0mm.
Compared with prior art, the beneficial effects of the utility model：
（1）The utility model median surface has inner surface, intermediate surface and outer surface, and intermediate surface connects from less than inner surface
The place of connecing extends upwardly to outer surface outside being tilted towards, and has projection of different shapes on three surfaces, makes diamond layer and matrix phase
Mutually engagement, significantly increases the bonded area of the two.
（2）The utility model median surface generally inner concave shape interface, reduces stress concentration, can effectively carry
The overall impact resistance of high composite sheet.
（3）The circular geometry of intermediate surface can be shifted and applied in composite polycrystal-diamond in the utility model
Shock wave in journey, improve the shock resistance of composite sheet.
Brief description of the drawings
Fig. 1 is the structure chart of composite polycrystal-diamond of the present utility model；
Fig. 2 is an interfacial structure figure on the hard alloy substrate of the utility model composite sheet；
Fig. 3 is another interfacial structure figure on the hard alloy substrate of the utility model composite sheet；
Fig. 4 is another interfacial structure figure on the hard alloy substrate of the utility model composite sheet；
In figure：1- diamond layers, 2- hard alloy layers.
Embodiment
With reference to embodiment and accompanying drawing, the utility model is described in more detail.
Fig. 1 is the structure chart of composite polycrystal-diamond of the present utility model.As shown in figure 1, a kind of have optimization hard
The high impact-resistant composite polycrystal-diamond of alloy interface, including diamond layer 1, hard alloy layer 2 and interface, composite sheet it is straight
Footpath Φ is 13.44mm, and the overall height H of diamond layer and hard alloy layer is 8.0mm, and in the application, the interface is closed with hard
Interfacial structure in layer gold is described.
Composite polycrystal-diamond be with diamond dust, hard alloy substrate, bonding agent etc. for raw material is once sintered and
Into sintering technology belongs to prior art in the art.
A figures are the top view of hard alloy layer in accompanying drawing 2,3,4, and b figures are the longitudinal sectional drawing of hard alloy layer.
Its median surface includes inner surface, intermediate surface and outer surface, and inner surface is circular flat, and intermediate surface is from less than interior
Surface junction is tilted towards extending upwardly to outer surface outside along level angle A for 5 °, and outer surface is highly higher than the height of inner surface,
The inner surface radius is 1.32mm, and intermediate surface width is 4.10mm, and outer surface width is 1.30mm, the intermediate surface and
Outer surface has cylindrical protrusion, and for increasing bonded area, cylindrical protrusion is highly 0.3mm.
In another embodiment, as shown in figure 3, identical with one embodiment, difference part is, the middle table
Face has cylindrical protrusion, and outer surface has trapezoidal protrusion.
In a further embodiment, as shown in figure 4, identical with one embodiment, difference part is, the middle table
Face has the geometry of annular projection, and outer surface is cylindrical protrusion.
Composite sheet with above-mentioned interfacial structure is subjected to shock resistance detection using drop hammer impact testing machine.As a result table
Face, composite sheet can bear 80J impact energy, and the impact energy that the composite sheet of reference examples generic interface structure can be born is 40J
Damage, therefore, the shock resistance with the composite sheet of the utility model interfacial structure doubles.
It is noted that embodiment described above is to the illustrative and not limiting of technical solutions of the utility model, affiliated skill
The equivalent substitution of art field those of ordinary skill or the other modifications made according to prior art, as long as not new beyond this practicality
The thinking and scope of type technical scheme, it should be included within the interest field required by the utility model.
Claims (7)
1. a kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface, including diamond layer, hard close
Layer gold and interface, the interface include inner surface, intermediate surface and outer surface, it is characterised in that and inner surface is circular flat, in
Between surface from less than inner surface junction be tilted towards it is outer extend upwardly to outer surface, outer surface highly higher than the height of inner surface,
The intermediate surface and outer surface are conformed with structure.
2. a kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface according to claim 1,
Characterized in that, the inner surface radius is the 1/6-1/5 of composite sheet radius, intermediate surface width is the 2/5- of composite sheet radius
3/5, outer surface width is the 1/6-1/5 of composite sheet radius.
3. a kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface according to claim 1,
Characterized in that, the intermediate surface along level angle A from less than inner surface junction be tilted towards it is outer upwards, the level angle
A is 1 ° -7 °.
4. a kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface according to claim 3,
Characterized in that, the level angle A is 1 ° -3 °.
5. a kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface according to claim 1,
Characterized in that, the intermediate surface and outer surface have cylindrical protrusion, for increasing bonded area.
6. a kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface according to claim 1,
Characterized in that, the intermediate surface has cylindrical protrusion, outer surface has trapezoidal protrusion.
7. a kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface according to claim 1,
Characterized in that, the intermediate surface has the geometry of annular projection, outer surface is cylindrical protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607973.0U CN206870494U (en) | 2017-05-27 | 2017-05-27 | A kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607973.0U CN206870494U (en) | 2017-05-27 | 2017-05-27 | A kind of high impact-resistant composite polycrystal-diamond with optimization carbide interface |
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| CN206870494U true CN206870494U (en) | 2018-01-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006705A (en) * | 2021-03-29 | 2021-06-22 | 西南石油大学 | Special-shaped polycrystalline diamond compact with secondary crushing function |
| 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 |
-
2017
- 2017-05-27 CN CN201720607973.0U patent/CN206870494U/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 |
| CN113006705A (en) * | 2021-03-29 | 2021-06-22 | 西南石油大学 | Special-shaped polycrystalline diamond compact with secondary crushing function |
| CN113006705B (en) * | 2021-03-29 | 2022-03-22 | 西南石油大学 | Special-shaped polycrystalline diamond compact with secondary crushing function |
| 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 |
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