CN202380982U - Circular truncated cone type diamond hard alloy composite sheet - Google Patents
Circular truncated cone type diamond hard alloy composite sheet Download PDFInfo
- Publication number
- CN202380982U CN202380982U CN2011205604796U CN201120560479U CN202380982U CN 202380982 U CN202380982 U CN 202380982U CN 2011205604796 U CN2011205604796 U CN 2011205604796U CN 201120560479 U CN201120560479 U CN 201120560479U CN 202380982 U CN202380982 U CN 202380982U
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- hard alloy
- diamond
- truncated cone
- layer
- circular truncated
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Abstract
The utility model discloses a circular truncated cone type diamond hard alloy composite sheet, comprising a hard alloy matrix layer formed through sintering under a high-temperature high-pressure condition and a diamond layer, wherein the diamond layer is of a circular truncated cone type and inlaid on the hard alloy matrix layer; and the combined surface between the diamond layer and the hard alloy matrix layer is a circular truncated cone surface. According to the circular truncated cone type diamond hard alloy composite sheet adopting the technical scheme, the shape of the upper diamond layer is changed into a circular truncated cone type, so that the thickness and length of the effective working position of the diamond layer are increased, therefore the abrasion resistance can be increased; moreover, the combined surface between the diamond layer and the hard alloy matrix layer is designed as the circular truncated cone surface, so that the anti-impact intensity can be better improved, therefore the diamond layer is prevented from falling off; and consequently, the circular truncated cone type diamond hard alloy composite sheet is suitable for oil drilling, and the drilling speed is increased largely.
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 and concentrated; 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 oil drilling and strong circular platform type diamond hard alloy complex sheet of abrasion resistance of being suitable for.
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 described diamond layer is circular platform type and is embedded on the hard alloy substrate layer, and the bonding surface of diamond layer and hard alloy substrate layer is a round table surface.
The height of said diamond layer is smaller or equal to the bottom surface radius of hard alloy substrate layer.
The bonding surface of said diamond layer and hard alloy substrate layer is provided with boss.
The radius of said boss is less than the bottom surface radius of hard alloy substrate layer.
Adopt the utility model of technique scheme, change the shape of top diamond layer into circular platform type, thereby increased the thickness and the length of the effective operating position of diamond layer, thereby can increase its wear resistance; In addition, the bonding surface of diamond layer and hard alloy substrate layer is designed to the round platform profile, thereby can better improves impact strength, prevent that diamond layer from coming off, therefore be applicable to and oil drilling significantly improve drilling speed.
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 is circular platform type and is embedded on the hard alloy substrate layer 2, and the bonding surface of diamond layer 1 and hard alloy substrate layer 2 is a round table surface.
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 the carbide alloy boss is arranged, the radius of this carbide alloy boss is less than the bottom surface radius of hard alloy substrate layer 2.
The operating principle of the utility model is: change the shape of top diamond layer into circular platform type, thereby increased the thickness and the length of the effective operating position of diamond layer, thereby can increase its wear resistance; In addition, the bonding surface of diamond layer and hard alloy substrate layer is designed to the round platform profile, thereby can better improves impact strength, prevent that diamond layer from coming off, therefore be applicable to and oil drilling significantly improve drilling speed.
Claims (4)
1. circular platform type 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: described diamond layer (1) is circular platform type and is embedded on the hard alloy substrate layer (2), and the bonding surface of diamond layer (1) and hard alloy substrate layer (2) is a round table surface.
2. circular platform type 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. circular platform type diamond hard alloy complex sheet according to claim 1 is characterized in that: the bonding surface of said diamond layer (1) and hard alloy substrate layer (2) is provided with boss.
4. circular platform type diamond hard alloy complex sheet according to claim 3 is characterized in that: the radius of said boss is less than the bottom surface radius of hard alloy substrate layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205604796U CN202380982U (en) | 2011-12-29 | 2011-12-29 | Circular truncated cone type diamond hard alloy composite sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205604796U CN202380982U (en) | 2011-12-29 | 2011-12-29 | Circular truncated cone type diamond hard alloy composite sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202380982U true CN202380982U (en) | 2012-08-15 |
Family
ID=46629495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205604796U Expired - Fee Related CN202380982U (en) | 2011-12-29 | 2011-12-29 | Circular truncated cone type diamond hard alloy composite sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202380982U (en) |
-
2011
- 2011-12-29 CN CN2011205604796U patent/CN202380982U/en not_active Expired - Fee Related
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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 |