CN207934816U - A kind of spiral shape diamond compact - Google Patents
A kind of spiral shape diamond compact Download PDFInfo
- Publication number
- CN207934816U CN207934816U CN201820149890.6U CN201820149890U CN207934816U CN 207934816 U CN207934816 U CN 207934816U CN 201820149890 U CN201820149890 U CN 201820149890U CN 207934816 U CN207934816 U CN 207934816U
- Authority
- CN
- China
- Prior art keywords
- diamond layer
- polycrystalline diamond
- rock
- carbide substrate
- cutting
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of spiral shape diamond compacts, belong to diamond compact technical field.It is provided with polycrystalline diamond layer on the cement carbide substrate, and top tip part and spiral groove are provided on polycrystalline diamond layer, bed course is equipped between cement carbide substrate and polycrystalline diamond layer, buffering is provided, extend substrate service life, the top tip part of polycrystalline diamond layer is equipped with 125 ° of 140 ° of angles, composite substrate gradually gos deep into rock when rock cutting, mitigate stress at the top of composite substrate, polycrystalline diamond layer is equipped with two spiral grooves simultaneously, increase contact area of the side to rock, improve stock-removing efficiency, axial cutting force when can reduce cutting, keep cutting more smooth, further extend the service life of cement carbide substrate.
Description
Technical field
The utility model is related to a kind of spiral shape diamond compacts, belong to diamond compact technical field.
Background technology
Diamond compact is sintered under super-pressure, hot conditions by diadust and cemented carbide substrate,
This product have high intensity, high-wearing feature and excellent impact flexibility and weldability, be widely used in exploration, mining,
The industries such as oil, coal.Currently, being generally tabular diamond compact used on the rock crushing tools such as PDC drill bit.It is this
Tabular diamond compact is combined by diamond composite layer and hard alloy substrate, and diamond composite layer is tabular,
It is as main cutting edge.During actual cut, there are some defects for tabular diamond compact：1, since there are stress
The problems in collection, the periphery of diamond composite layer is susceptible to chipping and delamination, leads to drill bit premature failure, service life
It is short；2, diamond composite layer is circular plate-like structure as main cutting edge, and main cutting edge and rock stratum contact area are wider,
Diamond compact gos deep into that rock stratum is more difficult, causes the inefficiency of drill bit broken rock.
Utility model content
In view of the above-mentioned problems, the technical problem to be solved by the present invention is to provide a kind of spiral shape diamond compacts.
The spiral shape diamond compact of the utility model, it includes cement carbide substrate, polycrystalline diamond layer, top
Portion, spiral groove and bed course are provided with polycrystalline diamond layer on the cement carbide substrate, and are arranged on polycrystalline diamond layer
There are top tip part and spiral groove, bed course is provided between the cement carbide substrate and polycrystalline diamond layer.
Preferably, the top tip part angle is 125 ° -140 °.
Preferably, the spiral groove is equipped with two, and spiral groove depth 0.5-1.2mm.
The beneficial effects of the utility model：Its structure is simple, reasonable design, cement carbide substrate and polycrystalline diamond layer
Between be equipped with bed course, buffering is provided, substrate service life is extended, the top tip part of polycrystalline diamond layer is equipped with 125 ° of -140 ° of angles,
Composite substrate gradually gos deep into rock when rock cutting, mitigates stress at the top of composite substrate, while on polycrystalline diamond layer
Equipped with two spiral grooves, increases contact area of the side to rock, improve stock-removing efficiency, it is possible to reduce axially cut when cutting
Power, keeps cutting more smooth, further extends the service life of cement carbide substrate.
Description of the drawings
The utility model is described in detail by following specific implementations and attached drawing for ease of explanation,.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the vertical view of Fig. 1.
Reference numeral：Cement carbide substrate 1, polycrystalline diamond layer 2, top tip part 3, spiral groove 4, bed course 5.
Specific implementation mode
As Figure 1-Figure 2, present embodiment uses following technical scheme：It includes cement carbide substrate 1, glomerocryst
Diamond layer 2, top tip part 3, spiral groove 4 and bed course 5 are provided with polycrystalline diamond layer 2 on the cement carbide substrate 1,
And top tip part 3 and spiral groove 4 are provided on polycrystalline diamond layer 2, the cement carbide substrate 1 and polycrystalline diamond layer 2
Between be provided with bed course 5.
3 angle of top tip part is 125 ° -140 °, and composite substrate gradually gos deep into rock when rock cutting, subtracts
Stress at the top of light composite substrate, improves its service life.
The spiral groove 4 is equipped with two, and 4 depth 0.5-1.2mm of spiral groove, increases contact surface of the side to rock
Product improves stock-removing efficiency, it is possible to reduce axial cutting force when cutting keeps cutting more smooth, extends cement carbide substrate 1
Service life.
In use, the top tip part 3 on polycrystalline diamond layer 2 is ascending gradually with formation rock contact area in cutting
Increase, it is initially small with stress when rock contact, substrate stress is buffered, the service life is improved.Spiral groove 4 increases contact area simultaneously,
Axial cutting force when reducing cutting, keeps cutting more smooth, extends the service life of cement carbide substrate 1.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (3)
1. a kind of spiral shape diamond compact, it is characterised in that：It includes cement carbide substrate (1), polycrystalline diamond layer
(2), top tip part (3), spiral groove (4) and bed course (5), the cement carbide substrate are provided with polycrystalline diamond layer on (1)
(2), top tip part (3) and spiral groove (4) and on polycrystalline diamond layer (2) are provided with, the cement carbide substrate (1) and poly-
Bed course (5) is provided between diamond layer (2).
2. a kind of spiral shape diamond compact according to claim 1, it is characterised in that：Top tip part (3) folder
Angle is 125 ° -140 °.
3. a kind of spiral shape diamond compact according to claim 1, it is characterised in that：The spiral groove (4)
Equipped with two, and spiral groove (4) depth 0.5-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820149890.6U CN207934816U (en) | 2018-01-29 | 2018-01-29 | A kind of spiral shape diamond compact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820149890.6U CN207934816U (en) | 2018-01-29 | 2018-01-29 | A kind of spiral shape diamond compact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207934816U true CN207934816U (en) | 2018-10-02 |
Family
ID=63650399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820149890.6U Expired - Fee Related CN207934816U (en) | 2018-01-29 | 2018-01-29 | A kind of spiral shape diamond compact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207934816U (en) |
-
2018
- 2018-01-29 CN CN201820149890.6U patent/CN207934816U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 Termination date: 20210129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |