CN202380981U - Concave diamond hard alloy composite piece - Google Patents
Concave diamond hard alloy composite piece Download PDFInfo
- Publication number
- CN202380981U CN202380981U CN2011205604387U CN201120560438U CN202380981U CN 202380981 U CN202380981 U CN 202380981U CN 2011205604387 U CN2011205604387 U CN 2011205604387U CN 201120560438 U CN201120560438 U CN 201120560438U CN 202380981 U CN202380981 U CN 202380981U
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- China
- Prior art keywords
- hard alloy
- diamond
- layer
- concave
- diamond layer
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- Expired - Fee Related
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Abstract
The utility model relates to a concave diamond hard alloy composite piece, comprising a hard alloy matrix layer and a diamond layer sintered at high temperature under high pressure; the diamond layer is embedded on the hard alloy matrix layer like arc-shaped recesses, and a combination face of the diamond layer and the hard alloy matrix layer is an arc-shaped concave face. According to the utility model the technical proposal, a shape of the diamond layer is changed into a concave shape to greatly increase shock resistance of products, and further quicken a drilling speed, so that the concave diamond hard alloy composite piece is particularly suitable for drilling soft rocks; furthermore, the concave diamond hard alloy composite piece provided by the utility model changes the diamond layer into the concave shape to increase thickness of an edge of the diamond layer at effective work position and increase shock resistance and wear resistance simultaneously.
Description
Technical field
The utility model relates to a kind of diamond hard alloy complex sheet, belongs to superhard material and makes the field.
Background technology
Diamond hard alloy complex sheet is after being added certain binding material and hard alloy substrate and fitted together by diamond dust; At the composite superhard material that sintering forms under the high pressure high temperature environment on the special diamond hydraulic press, it is made up of one deck polycrystalline diamond layer and hard alloy substrate layer.Because polycrystalline diamond layer hardness high-wearing feature is good, add the excellent toughness and the solderability of hard alloy substrate, make its premium properties that has diamond and carbide alloy concurrently, be widely used as the cutting element-brill tooth on the oil bit.
At present to bore the diamond end face of tooth be the plane to diamond compact mostly, bore teeth with these diamond compacts and make drill bit, the drilling well initial stage owing to the origin of force of brill tooth is little; The rate of penetration of drill bit produces strong wearing and tearing even fragmentation than very fast along with boring increment face working portion, and the contact area of boring tooth and rock is also strengthening; It is more and more blunt to show as drill bit; The rate of penetration of drill bit is slack-off, thereby influences the drilling depth of drill bit, drilling efficiency and the scope of application.
Summary of the invention
The purpose of the utility model provides a kind of soft rock that is applicable to and creeps into and improve the matrix diamond hard alloy complex sheet of rate of penetration.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The utility model is included in hard alloy substrate layer and the diamond layer that sintering forms under the HTHP, and the curved depression of described diamond layer is embedded on the hard alloy substrate layer, and the bonding surface of diamond layer and hard alloy substrate layer is an arc-shaped concave.
The height of said diamond layer is smaller or equal to the bottom surface radius of hard alloy substrate layer.
One concavity carbide alloy concave station is arranged on the bonding surface of said diamond layer and hard alloy substrate layer.
The radius of said carbide alloy concave station is less than the bottom surface radius of hard alloy substrate layer.
Adopting the utility model of technique scheme, is matrix with the alteration of form of diamond layer, has improved the shock resistance of product greatly, makes rate of penetration further accelerate, thereby is particularly suitable for creeping into of soft rock; In addition, the utility model becomes diamond layer after the matrix, has increased the thickness at diamond layer edge, effective operating position, has improved shock resistance and wear resistance too.
Description of drawings
Fig. 1 is the overall structure sketch map of the utility model.
The specific embodiment
As shown in Figure 1; The utility model is included in the hard alloy substrate layer 2 and diamond layer 1 that sintering forms under the HTHP; Diamond layer 1 curved depression is embedded on the hard alloy substrate layer 2, and the bonding surface of diamond layer 1 and hard alloy substrate layer 2 is an arc-shaped concave.
The height of diamond layer 1 is smaller or equal to the bottom surface radius of hard alloy substrate layer 2.
On the bonding surface of diamond layer 1 and hard alloy substrate layer 2 a concavity carbide alloy concave station is arranged, and the radius of this carbide alloy concave station is less than the bottom surface radius of hard alloy substrate layer 2.
The operating principle of the utility model is: with the alteration of form of diamond layer is matrix, has improved the shock resistance of product greatly, makes rate of penetration further accelerate, thereby is particularly suitable for creeping into of soft rock; In addition, the utility model becomes diamond layer after the matrix, has increased the thickness at diamond layer edge, effective operating position, has improved shock resistance and wear resistance too.
Claims (4)
1. matrix diamond hard alloy complex sheet; It is included in hard alloy substrate layer (2) and the diamond layer (1) that sintering forms under the HTHP; It is characterized in that: the curved depression of described diamond layer (1) is embedded on the hard alloy substrate layer (2), and the bonding surface of diamond layer (1) and hard alloy substrate layer (2) is an arc-shaped concave.
2. matrix diamond hard alloy complex sheet according to claim 1 is characterized in that: the height of said diamond layer (1) is smaller or equal to the bottom surface radius of hard alloy substrate layer (2).
3. matrix diamond hard alloy complex sheet according to claim 1 is characterized in that: a concavity carbide alloy concave station is arranged on the bonding surface of said diamond layer (1) and hard alloy substrate layer (2).
4. matrix diamond hard alloy complex sheet according to claim 3 is characterized in that: the radius of said carbide alloy concave station is less than the bottom surface radius of hard alloy substrate layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205604387U CN202380981U (en) | 2011-12-29 | 2011-12-29 | Concave diamond hard alloy composite piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205604387U CN202380981U (en) | 2011-12-29 | 2011-12-29 | Concave diamond hard alloy composite piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202380981U true CN202380981U (en) | 2012-08-15 |
Family
ID=46629494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205604387U Expired - Fee Related CN202380981U (en) | 2011-12-29 | 2011-12-29 | Concave diamond hard alloy composite piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202380981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505522A (en) * | 2017-09-05 | 2019-03-22 | 史密斯国际有限公司 | Cutting element with non-planar surfaces and the tool in conjunction with the cutting element |
-
2011
- 2011-12-29 CN CN2011205604387U patent/CN202380981U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505522A (en) * | 2017-09-05 | 2019-03-22 | 史密斯国际有限公司 | Cutting element with non-planar surfaces and the tool in conjunction with the cutting element |
| US11098532B2 (en) | 2017-09-05 | 2021-08-24 | Schlumberger Technology Corporation | Cutting elements having non-planar surfaces and tools incorporating the same |
| CN109505522B (en) * | 2017-09-05 | 2022-05-31 | 史密斯国际有限公司 | Cutting elements having non-planar surfaces and tools incorporating the same |
| US11795764B2 (en) | 2017-09-05 | 2023-10-24 | Schlumberger Technology Corporation | Cutting elements having non-planar surfaces and tools incorporating the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20131229 |