CN208534408U - Diamond compact with helicitic texture - Google Patents
Diamond compact with helicitic texture Download PDFInfo
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- CN208534408U CN208534408U CN201820716995.5U CN201820716995U CN208534408U CN 208534408 U CN208534408 U CN 208534408U CN 201820716995 U CN201820716995 U CN 201820716995U CN 208534408 U CN208534408 U CN 208534408U
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- diamond layer
- diamond
- alloy substrate
- hole
- helicitic texture
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Abstract
The utility model discloses a kind of diamond compact with helicitic texture, including alloy substrate and diamond layer, and the alloy substrate is equipped with a threaded hole；The diamond layer is equipped with one and the consistent step through-hole of threaded hole outer profile；It further include the clamping screw to match with the threaded hole, the clamping screw sequentially passes through the step through-hole and threaded hole, so that the upper surface of the alloy substrate is close to the lower surface of the diamond layer.The beneficial effects of the utility model are mainly reflected in: simple and ingenious structure, the integral hardness of this composite sheet is not influenced, there are subtle gaps between the upper surface of alloy substrate and the lower surface of diamond layer, can efficiently solve causes in high-temperature work environment between alloy substrate and diamond layer since thermal expansion coefficient is different, the problem of thermal expansion coefficient extremely low diamond layer drawing crack, simultaneously, convenient for converting the angle or replacement diamond layer of diamond layer, operation and maintenance cost is significantly reduced.
Description
Technical field
The utility model relates to superhard material preparation fields, specifically, more particularly to a kind of gold with helicitic texture
Hard rock composite sheet.
Background technique
(Vickers hardness is up to 10,400kg/mm for hardness highest in known materials for diamond2, be roughly equal to 102GPa), it is wear-resisting
Property good and coefficient of friction is extremely low, thermal conductivity is best, be based on the above advantage, diamond often welds together with parent metal material,
It is fabricated to various tools.Cylindrical structure is commonly used, also has and mentions high performance knot in plycrystalline diamond layer end progress shape change
Structure, such as special-shaped composite sheet have: multi-diamond layer composite sheet, steel helmet type composite sheet, ridge-roof type composite sheet, taper composite sheet, arc
The novel polycrystalline diamond compacts such as diamond compact.But these type composite sheets have a common ground, in use process, especially
It is to need diamond polycrystal and hard alloy substrate to carry out welding in oil field, geological drilling and form PDC sawtooth, due to hard
Matter alloy thermal expansion coefficient is 6*10-6/ DEG C, diamond layer thermal expansion coefficient is 3.5*10-6/ DEG C, the thermal expansion coefficient of the two is not
Together, therefore large-sized diamond can generate larger stress in the welding process, often result in cracking and scrap.
In addition, the PDC sawtooth can also generate amount of heat, therefore equally can also generate in actual production process
Larger stress causes PDC sawtooth to crack and scrap.
Therefore for drawbacks described above present in currently available technology, it is really necessary to be studied, to provide a kind of scheme,
Defect existing in the prior art is solved, composite polycrystal-diamond cracking when heated is avoided, improves polycrystalline diamond
The service performance of composite sheet.
Utility model content
The purpose of the utility model is to overcome the shortcomings of the prior art, provide a kind of diamond with helicitic texture
Composite sheet.
The purpose of this utility model is achieved through the following technical solutions:
A kind of diamond compact with helicitic texture, including alloy substrate and diamond layer, the alloy substrate
It is equipped with a threaded hole, the hole heart of the threaded hole is located on the central axis of the alloy substrate；The diamond layer is equipped with
One is located at the central axis of the diamond layer with the consistent step through-hole of threaded hole outer profile, the hole heart of the step through-hole
On；It further include the clamping screw to match with the threaded hole, the clamping screw sequentially passes through the step through-hole and screw thread
Hole, so that the upper surface of the alloy substrate is close to the lower surface of the diamond layer.
Preferably, the inner hole of the clamping screw is in hexagonal or eight angle type or ten horn shapes, and exit orifice is in hexagonal or eight
Horn shape or ten horn shapes.
Preferably, the type of the step through-hole and the screw thread on threaded hole is fine thread, coarse thread, special closely-pitched spiral shell
One of line, favour formula screw thread, shape-V thread, round thread, square thread, pipe screw thread, T type screw thread, buttless thread or ball screws.
Preferably, the upper surface of the diamond layer and the upper surface of the clamping screw are in same plane；The conjunction
The lower surface of auri body and the lower surface of the clamping screw are in same plane.
Preferably, the upper surface of the diamond layer and the upper surface of the clamping screw are in same plane；The conjunction
The lower surface of auri body is located at the top of the lower surface of the clamping screw.
Preferably, the alloy substrate and diamond layer are cylindric, and the diameter of the two is identical.
Preferably, the diamond layer is thermally stable polycrystalline diamond piece or polycrystalline diamond piece.
Preferably, the alloy substrate is the complex matrix of hard alloy substrate or hard alloy and steel alloy.This is practical
Novel beneficial effect is mainly reflected in:
1, alloy substrate and diamond layer are installed by screw thread in this composite sheet, convenient for converting the angle of diamond layer
Or replacement diamond layer, significantly reduce operation and maintenance cost；
2, structure is simple, deft design, alloy substrate and diamond layer firm connection, improve drill bit shock resistance damage and
High temperature wear resistant performance has good drilling characteristic；
3, alloy substrate and diamond layer are connected through a screw thread, and eliminate welding sequence, reduce cost of manufacture, meanwhile, it reduces
Destruction of the welding process high temperature to this composite sheet, improves holding power, increases assembly efficiency；
5, between microcosmic angle, the upper surface of alloy substrate and the lower surface of diamond layer there are subtle gap, can
Efficiently solving causes in high-temperature work environment between alloy substrate and diamond layer since thermal expansion coefficient is different, and heat is swollen
The problem of swollen coefficient extremely low diamond layer drawing crack, meanwhile, and the integral hardness of this composite sheet is not influenced.
Detailed description of the invention
Technical solutions of the utility model are described further with reference to the accompanying drawing:
Fig. 1: the perspective view of the utility model；
Fig. 2: the cross-sectional view of the utility model first embodiment；
Fig. 3: the cross-sectional view of the utility model second embodiment.
Specific embodiment
The utility model is described in detail below with reference to specific embodiment shown in the drawings.But these embodiment party
Formula is not limited to the utility model, structure that those skilled in the art are made according to these embodiments, method or
Transformation functionally is all contained in the protection scope of the utility model.
As shown in Figure 1 to Figure 3, the utility model discloses a kind of diamond compact with helicitic texture, including is in
The identical alloy substrate 1 of cylindric and diameter and the affixed diamond layer 2 of the alloy substrate 1, specifically, the diamond
Layer 2 is thermally stable polycrystalline diamond piece or polycrystalline diamond piece, and the alloy substrate 1 is hard alloy substrate or hard alloy
With the complex matrix of steel alloy.
The diamond compact with helicitic texture of the utility model can be used in a variety of applications, and particularly, should
Diamond compact with helicitic texture is applicable to the material for being difficult to cut for being difficult to be handled with conventional cutting tools
Material is handled.That is, since originally described diamond with helicitic texture is multiple compared with the surface of conventional cutting tools
The surface for closing piece has the hardness of enhancing, so there is the diamond compact of helicitic texture can extremely efficient be used to locate for this
Reason is difficult to the material cut.
In the utility model, the alloy substrate 1 is equipped with a threaded hole 11, and the hole heart of the threaded hole 11 is located at described
On the central axis of alloy substrate 1.The diamond layer 2 is equipped with one and the consistent step through-hole of 11 outer profile of threaded hole
21, the hole heart of the step through-hole 21 is located on the central axis of the diamond layer 2.The step through-hole 21 and threaded hole 11 by
Matched clamping screw 3 runs through, so that the lower surface of the upper surface 12 of the alloy substrate 1 and the diamond layer 2
22 are close to.In the utility model, since alloy substrate and diamond layer are connected through a screw thread, belong to physical connection, can remove weldering
Process is connect, reduces destruction of the welding process high temperature to this composite sheet, improves holding power, increase assembly efficiency.In addition from
Microcosmic angle, there are subtle gaps between the upper surface of alloy substrate and the lower surface of diamond layer, can be effectively prevented from
Thermal expansion coefficient is different between alloy substrate and diamond layer in the hot environment that works and bring perplexs, meanwhile, and do not influence
The integral hardness of this composite sheet, diamond layer drawing crack that will not thermal expansion coefficient is extremely low.
In the utility model, the inner hole of the clamping screw 3 is in hexagonal or eight angle type or ten horn shapes, and exit orifice is in hexagonal
The outer profile of shape or eight angle type or ten horn shapes, the clamping screw 3 is polygon bolt, is to design for driving torque, such as
Being designed as cylinder can skid and cannot pass on torque.Certainly, it also can be other shapes, belong to the protection model of the utility model
Farmland is not done and is excessively repeated.The type of the step through-hole 21 and the screw thread on threaded hole 11 is fine thread, coarse thread, spy
In fine thread, favour formula screw thread, shape-V thread, round thread, square thread, pipe screw thread, T type screw thread, buttless thread or ball screws
One kind.
As shown in Fig. 2, in the utility model first embodiment, upper surface 31 and the diamond layer 2 of the clamping screw 3
Upper surface 23 is in same plane in same plane, lower surface 32 and the lower surface 13 of the alloy substrate 1, to reach
The effect of neat appearance.
As shown in figure 3, in the utility model second embodiment, upper surface 31 and the diamond layer 2 of the clamping screw 3
Upper surface 23 is located at the lower section of the lower surface 13 of the alloy substrate 1 with same plane, lower surface 32 is in, can be with drill bit sheet
Body is threadedly coupled, and is eliminated welding sequence, is reduced destruction of the welding process high temperature to this composite sheet, improve holding power, is increased
Assembly efficiency.The beneficial effects of the utility model are mainly reflected in:
1, alloy substrate and diamond layer are installed by screw thread in this composite sheet, convenient for converting the angle of diamond layer
Or replacement diamond layer, significantly reduce operation and maintenance cost；
2, structure is simple, deft design, alloy substrate and diamond layer firm connection, improve drill bit shock resistance damage and
High temperature wear resistant performance has good drilling characteristic.
3, alloy substrate and diamond layer are connected through a screw thread, and eliminate welding sequence, reduce cost of manufacture, meanwhile, it reduces
Destruction of the welding process high temperature to this composite sheet, improves holding power, increases assembly efficiency；
5, between microcosmic angle, the upper surface of alloy substrate and the lower surface of diamond layer there are subtle gap, can
Efficiently solving causes in high-temperature work environment between alloy substrate and diamond layer since thermal expansion coefficient is different, and heat is swollen
The problem of swollen coefficient extremely low diamond layer drawing crack, meanwhile, and the integral hardness of this composite sheet is not influenced.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
Claims (8)
1. the diamond compact with helicitic texture, it is characterised in that: including alloy substrate (1) and diamond layer (2), institute
Alloy substrate (1) is stated equipped with a threaded hole (11), the hole heart of the threaded hole (11) is located at the center of the alloy substrate (1)
On axis；The diamond layer (2) is equipped with one and the consistent step through-hole of the threaded hole (11) outer profile (21), the step
The hole heart of through-hole (21) is located on the central axis of the diamond layer (2)；It further include the lock to match with the threaded hole (11)
Tight bolt (3), the clamping screw (3) sequentially passes through the step through-hole (21) and threaded hole (11), so that the alloy-based
It is close to the lower surface (22) of the diamond layer (2) upper surface (12) of body (1).
2. the diamond compact according to claim 1 with helicitic texture, it is characterised in that: the clamping screw
(3) inner hole is in hexagonal or eight angle type or ten horn shapes, and exit orifice is in hexagonal or eight angle type or ten horn shapes.
3. the diamond compact according to claim 2 with helicitic texture, it is characterised in that: the step through-hole
(21) type of the screw thread and on threaded hole (11) is fine thread, coarse thread, extra fine, favour formula screw thread, V-type spiral shell
One of line, round thread, square thread, pipe screw thread, T type screw thread, buttless thread or ball screws.
4. the diamond compact according to claim 3 with helicitic texture, it is characterised in that: the diamond layer
(2) upper surface (31) of upper surface (23) and the clamping screw (3) is in same plane；Under the alloy substrate (1)
The lower surface (32) of surface (13) and the clamping screw (3) is in same plane.
5. the diamond compact according to claim 3 with helicitic texture, it is characterised in that: the diamond layer
(2) upper surface (31) of upper surface (23) and the clamping screw (3) is in same plane；Under the alloy substrate (1)
Surface (13) is located at the top of the lower surface (32) of the clamping screw (3).
6. the diamond compact according to claim 4 or 5 with helicitic texture, it is characterised in that: the alloy-based
Body (1) and diamond layer (2) are cylindric, and the diameter of the two is identical.
7. the diamond compact according to claim 6 with helicitic texture, it is characterised in that: the diamond layer
It (2) is thermally stable polycrystalline diamond piece or polycrystalline diamond piece.
8. the diamond compact according to claim 7 with helicitic texture, it is characterised in that: the alloy substrate
It (1) is hard alloy substrate or the complex matrix of hard alloy and steel alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820716995.5U CN208534408U (en) | 2018-05-15 | 2018-05-15 | Diamond compact with helicitic texture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820716995.5U CN208534408U (en) | 2018-05-15 | 2018-05-15 | Diamond compact with helicitic texture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208534408U true CN208534408U (en) | 2019-02-22 |
Family
ID=65395060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820716995.5U Active CN208534408U (en) | 2018-05-15 | 2018-05-15 | Diamond compact with helicitic texture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208534408U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855033A (en) * | 2021-03-02 | 2021-05-28 | 广东钜鑫新材料科技股份有限公司 | Polycrystalline diamond compact, manufacturing method thereof, PDC bearing assembly and cutting tool |
| US11306543B2 (en) | 2020-02-20 | 2022-04-19 | Saudi Arabian Oil Company | Drill bit cutter fitted with a threaded member |
-
2018
- 2018-05-15 CN CN201820716995.5U patent/CN208534408U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11306543B2 (en) | 2020-02-20 | 2022-04-19 | Saudi Arabian Oil Company | Drill bit cutter fitted with a threaded member |
| CN112855033A (en) * | 2021-03-02 | 2021-05-28 | 广东钜鑫新材料科技股份有限公司 | Polycrystalline diamond compact, manufacturing method thereof, PDC bearing assembly and cutting tool |
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