CN202520231U - Multifunctional polycrystalline diamond compound sheet - Google Patents
Multifunctional polycrystalline diamond compound sheet Download PDFInfo
- Publication number
- CN202520231U CN202520231U CN2011205107524U CN201120510752U CN202520231U CN 202520231 U CN202520231 U CN 202520231U CN 2011205107524 U CN2011205107524 U CN 2011205107524U CN 201120510752 U CN201120510752 U CN 201120510752U CN 202520231 U CN202520231 U CN 202520231U
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- CN
- China
- Prior art keywords
- polycrystalline diamond
- diamond
- composite polycrystal
- hard alloy
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a multifunctional polycrystalline diamond compound sheet. A compound sheet body is formed by compounding a polycrystalline diamond layer and a hard alloy substrate; and the entire compound sheet body is elliptical, i.e., the cross sections of the polycrystalline diamond layer and the hard alloy substrate are elliptical. The conventional cylindrical polycrystalline diamond compound sheet is turned into an elliptical polycrystalline diamond compound sheet, so that the drilling efficiency of the polycrystalline diamond compound sheet can be increased effectively, the service life is long, and the use cost is reduced.
Description
Technical field
The utility model relates to drill bit and makes the field, relates in particular to a kind of multi-functional composite polycrystal-diamond that is installed on the bit drills tooth.
Background technology
Composite polycrystal-diamond is the composite material that under HTHP, is sintered into by one deck polycrystalline diamond layer and hard alloy substrate; Wherein composite polycrystal-diamond has hardness height, characteristics that abrasion resistance is good, and hard alloy substrate has improved the pliability and the solderability of composite material on the whole.The hard alloy substrate of a plurality of composite polycrystal-diamonds is embedded in respectively in the composite sheet installing hole of rounded arrangement of bit drills tooth front end face, and fixes through welding manner; The polycrystalline diamond layer of composite polycrystal-diamond then exceeds bit drills tooth front end face, and as of paramount importance cutwork surface on the drill bit.When drill bit creeps into, let composite polycrystal-diamond with become a top rake by rock drilling surface, rig applies certain pressure and rotation to drill bit, faces rock with the polycrystalline diamond of composite polycrystal-diamond and carries out scraping.
Traditional composite polycrystal-diamond integral body is the cylindrical of rule, and promptly the cross section of polycrystalline diamond layer and hard alloy substrate is circular.Because the composite polycrystal-diamond impact force of in drilling process, being rotated and to the normal pressure that presses down and a plurality of composite polycrystal-diamond in the rounded arrangement of bit drills tooth; So the stress that the one side of composite polycrystal-diamond radial outside receives is maximum; It is also serious to wear and tear; The drilling efficiency that this not only influences composite polycrystal-diamond causes composite polycrystal-diamond early to lose efficacy, and also makes the life-span of composite polycrystal-diamond greatly reduce.
The utility model content
The utility model technical problem to be solved provides the multi-functional composite polycrystal-diamond of a kind of drilling efficiency height and long service life.
For addressing the above problem, the utility model is realized through following scheme:
A kind of multi-functional composite polycrystal-diamond, said composite sheet body is composited by polycrystalline diamond layer and hard alloy substrate, and said composite sheet body integral body is oval column, and promptly the cross section of polycrystalline diamond layer and hard alloy substrate is ellipse.
In the such scheme, the aspect ratio of said oval cross section is preferably between 2: 1～2: 1.6.
In the such scheme, the aspect ratio of said oval cross section is preferably 2: 1.4.
In the such scheme, the upper surface of said polycrystalline diamond layer can or be the middle part has annular lip to upper process and outer rim a steel helmet shape for plane, arc surface.
In the such scheme, when the upper surface of polycrystalline diamond layer was the plane, the upper surface of said polycrystalline diamond layer preferably was parallel to horizontal plane.
In the such scheme, the bonding surface of said diamond layer and hard alloy substrate is preferably matsurface.
Compared with prior art; The utility model becomes oval-shaped composite polycrystal-diamond with the composite polycrystal-diamond of traditional right cylindrical, and lets length bearing of trend and bit drills tooth front end face radially consistent of this composite polycrystal-diamond when mounted; At first; Because it is oval for positive circle; Under the oval-shaped width prerequisite identical with orbicular radius, the radius of curvature of oval-shaped length direction is less than orbicular radius of curvature, and therefore oval-shaped composite polycrystal-diamond has higher cutting pressure; So it is darker to embed rock, thereby can effectively improve drilling efficiency; Secondly; Because it is oval for positive circle; Under the oval-shaped width prerequisite identical, be equivalent to have more one section polycrystalline diamond piece of waiting to wear and tear on the oval-shaped length direction, so also can effectively increase 50%-100% application life with orbicular radius; In addition; It is wider also to have the formations drilled of adaptation with the drill bit of oval-shaped composite polycrystal-diamond production; Can take into account the probing of various bad grounds; Drill bit just can finishing drilling to the bottom, stratum from top, stratum, thereby has avoided will changing different drill bits because of Different Strata, and the frequent change drill bit will cause drilling benefit low (changing a bit cost does not wait 60,000-100,000).
Description of drawings
Fig. 1 is the structural representation of a kind of multi-functional composite polycrystal-diamond of the utility model.
Fig. 2 for A-A among Fig. 1 to being viewgraph of cross-section.
Label among the figure: 1, polycrystalline diamond layer; 2, hard alloy substrate.
The specific embodiment
Referring to Fig. 1 and Fig. 2, a kind of multi-functional composite polycrystal-diamond of the utility model mainly is composited by polycrystalline diamond layer 1 and hard alloy substrate 2.The composite sheet body integral body that under the high pressure-temperature condition, is composited is oval column, and promptly the cross section of polycrystalline diamond layer 1 and hard alloy substrate 2 is ellipse.Excessive for the aspect ratio that prevents oval cross section, and cause the avalanche of composite polycrystal-diamond in drilling process, in the utility model, the aspect ratio of said oval cross section should be between 2: 1～2: 1.6.In the utility model preferred embodiment, the aspect ratio of said oval cross section is 2: 1.4.During use, the composite sheet body of oval column is embedded in the composite sheet installing hole of rounded arrangement of bit drills tooth front end face, and lets length bearing of trend and bit drills tooth front end face radially consistent of composite polycrystal-diamond.Like this, the outer N-Side surf of the length direction of composite polycrystal-diamond has just formed the cutwork face that this composite polycrystal-diamond receives stress.
In order to adapt to different strata, the surface structure of said composite polycrystal-diamond can design accordingly, as having the steel helmet shape on annular lip limit or the like to upper process and outer rim for plane, arc surface or middle part.In the utility model preferred embodiment, the upper surface of said polycrystalline diamond layer 1 is the plane.When the upper surface of polycrystalline diamond layer 1 is the plane, can be made into the horizontal plane that parallels with horizontal plane as required or processes and a nonparallel clinoplain of horizontal plane.In the utility model preferred embodiment, the upper surface of said polycrystalline diamond layer 1 is parallel to horizontal plane.
The bonding surface of polycrystalline diamond layer 1 and hard alloy substrate 2, the i.e. upper surface of the soffit of polycrystalline diamond layer 1 and hard alloy substrate 2 smooth surface that can cooperatively interact for smooth plane or shape.But in order to improve the adhesion between polycrystalline diamond layer 1 and the hard alloy substrate 2; Polycrystalline diamond layer 1 is preferably non-smooth coarse plane or curved surface with the bonding surface of hard alloy substrate 2; Be that the soffit of polycrystalline diamond layer 1 and the upper surface of hard alloy substrate 2 are provided with chimeric pimple or dolly dimple each other; These pimples or dolly dimple can effectively disperse the stress on the bonding surface of polycrystalline diamond layer 1 and hard alloy substrate 2, thereby can effectively avoid the disengaging of polycrystalline diamond layer 1 and hard alloy substrate 2.
Claims (7)
1. multi-functional composite polycrystal-diamond; Said composite sheet body is composited by polycrystalline diamond layer (1) and hard alloy substrate (2); It is characterized in that: said composite sheet body integral body is oval column, and promptly the cross section of polycrystalline diamond layer (1) and hard alloy substrate (2) is ellipse.
2. multi-functional composite polycrystal-diamond according to claim 1 is characterized in that: the aspect ratio of said oval cross section is between 2: 1～2: 1.6.
3. multi-functional composite polycrystal-diamond according to claim 2 is characterized in that: the aspect ratio of said oval cross section is 2: 1.4.
4. according to any described multi-functional composite polycrystal-diamond in the claim 1～3, it is characterized in that: the upper surface of said polycrystalline diamond layer (1) is the plane.
5. multi-functional composite polycrystal-diamond according to claim 4 is characterized in that: the upper surface of said polycrystalline diamond layer (1) is parallel to horizontal plane.
6. according to any described multi-functional composite polycrystal-diamond in the claim 1～3, it is characterized in that: the upper surface of said polycrystalline diamond layer (1) is the middle part has annular lip to upper process and outer rim a steel helmet shape.
7. according to any described multi-functional composite polycrystal-diamond in the claim 1～3, it is characterized in that: the bonding surface of said diamond layer and hard alloy substrate (2) is a matsurface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205107524U CN202520231U (en) | 2011-12-09 | 2011-12-09 | Multifunctional polycrystalline diamond compound sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205107524U CN202520231U (en) | 2011-12-09 | 2011-12-09 | Multifunctional polycrystalline diamond compound sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520231U true CN202520231U (en) | 2012-11-07 |
Family
ID=47103184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205107524U Expired - Lifetime CN202520231U (en) | 2011-12-09 | 2011-12-09 | Multifunctional polycrystalline diamond compound sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520231U (en) |
-
2011
- 2011-12-09 CN CN2011205107524U patent/CN202520231U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |