CN2846707Y - Heat resistance diamond cutting teeth - Google Patents
Heat resistance diamond cutting teeth Download PDFInfo
- Publication number
- CN2846707Y CN2846707Y CN200520143635.3U CN200520143635U CN2846707Y CN 2846707 Y CN2846707 Y CN 2846707Y CN 200520143635 U CN200520143635 U CN 200520143635U CN 2846707 Y CN2846707 Y CN 2846707Y
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- diamond
- layer
- heat
- utility
- heat resistant
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Abstract
The utility model relates to a heat-resistance diamond cutting tooth. The utility model comprises a hard alloy backing material layer (4) and a diamond material work layer (5) which is attached to the hard alloy backing material layer (4). The utility model is characterized in that the diamond material work layer (5) comprises a common diamond sintering body layer (3) of which the heat resistance is smaller than 700 DEG C and a heat-resistance type diamond sintering body layer (2) of which the heat resistance is larger than 700 DEG C, the common diamond sintering body layer (3) is attached to the hard alloy backing material layer (4), and the heat-resistance type diamond sintering body layer (2) is attached to the common diamond sintering body layer (3). The utility model has the characteristic that due to the arrangement of the heat-resistance type diamond layer on the uppermost layer, the heat resistance or the heat radiation performance of the diamond material layer is greatly raised, and thus the utility model reduces the heat damage risk of the diamond layer on cutting sand mudstone, effectively avoids the heat damage of the uppermost layer of the diamond material working layer, quickly relieves the heat impact generated on local and further and greatly raises the entire durability of the cutting tooth.
Description
Technical field
The utility model relates to a kind of cutting teeth that is used for oil, geology drill bit, relates to a kind of heat resistant type diamond cutting tooth specifically.
Background technology
The diamond cutting tooth is to be formed by diamond sinter layer and cemented carbide base material layer (cemented carbide substrate) sintering under the high pressure high temperature condition, has the excellent properties of diamond and carbide alloy concurrently, is widely used in oil, natural gas drill bit.During work, the diamond cutting tooth is exposed to the most external of drill bit, extremely thousands of meters deep layer work of tens of rice below the face of land, directly act on the rock stratum, fragmentation is carried out in the rock stratum, condition of work is very abominable, not only huge impact power to be born, also strong corrasion can be subjected to simultaneously.Very zonule in the actual contact of diamond layer and rock stratum can produce the high temperature of moment, in this small high-temperature region, diamond can go to pot because of overheated, be reflected in the quick-wearing of crossing that shows as diamond layer on the macroscopic view, make the diamond cutting tooth lose due sharpness, not only can cause the reduction of rate of penetration also can influence simultaneously the application life of drill bit.
For improving diamond sinter---the structure of carbide drill tooth, the utility model patent of Chinese patent ZL02290359.3 discloses the diamond compact of a kind of on-plane surface in conjunction with structure, this patented technology is by improving the geometry of carbide alloy bonding surface, though the impact resistance of diamond cutting tooth is increased, should shock resistance, the instructions for use under the bad working environments of the strong abrasion of adaptation again but still can not satisfy.
The diamond cutting tooth of above-mentioned utility model patent technology manufacturing as shown in Figure 1, its working lining is the diamond sinter of single structure, the heat-resisting degree of this plain edition diamond sinter generally is no more than 700 ℃.In the actual well drilled process, the diamond of the superiors is owing to directly rub mutually with the rock of deep under ground, its moment high temperature the diamond layer generation is chapped, and then destroyed the combination between diamond crystals, make diamond layer peel off gradually, wear and tear.
Summary of the invention
The purpose of this utility model provides a kind of shock resistance and wear-corrosion resistance that the plain edition diamond sinter is had that both possessed at existing weak point in the above-mentioned prior art just, can bear the heat resistance type diamond cutting tooth of the cutting high temperature of moment again.
The purpose of this utility model can realize by following technique measures:
Heat resistant type diamond cutting tooth of the present utility model comprises the cemented carbide base material layer and attached to the diamond working lining on the cemented carbide base material layer (cemented carbide substrate), and wherein said diamond working lining comprises attached to the plain edition diamond sinter layer (shock resistance type) of the heat resistance on the cemented carbide base material layer＜700 ℃ with attached to the heat resistant type diamond sinter layer of heat resistance＞700 on the plain edition diamond sinter layer ℃.
Bonding surface between diamond sinter layer of heat resistant type described in the utility model and the plain edition diamond sinter layer is a plane structure; Bonding surface between described plain edition diamond sinter layer and the cemented carbide base material layer is plane structure or concavo-convex alternate structural plane.
The thickness of the diamond sinter of heat resistant type described in the utility model layer is 0.1～0.3mm, and the thickness of plain edition diamond sinter layer is 0.7～3mm.
Plain edition diamond sinter layer described in the utility model and heat resistant type diamond sinter layer are the product of prior art, and wherein: plain edition diamond sinter layer is to be formed by the diamond dust of 88-94wt% and metal Ni or Fe or Co sintering under superhigh-temperature and-pressure; Heat resistant type diamond sinter layer is formed by the diamond dust of 86-92wt% and metal Ni or Fe or Si sintering under superhigh-temperature and-pressure, or is made of the pure diamond more than the 98wt%.
The utility model compared with prior art has following characteristic: the setting that is positioned at the plain edition diamond sinter layer in intermediate layer can make whole diamond working lining possess impact resistance and abrasion resistance that general diamond sinter possesses, and be positioned at the cutting teeth of the superiors last working portion---the setting that is heat resistant type diamond sinter layer can make whole diamond working lining have superpower heat-resisting ability, make the diamond working lining have both shock resistance simultaneously, erosion resistant and heat-resisting ability, under the situation that does not reduce shock resistance, the heat resistance of cutting teeth is improved, so make cutting teeth whole durability---be greatly improved application life.
Description of drawings
Fig. 1 is prior art constructions figure.
Among the figure 1 ' be diamond layer end face, 2 ' be the diamond working lining, 3 ' be the cemented carbide base material layer.
Fig. 2 is the structural representation of first kind of embodiment of the present utility model.
Fig. 3 is the structural representation of second kind of embodiment of the present utility model.
1 is diamond layer end face among the figure, the 2nd, heat resistant type diamond sinter layer, the 3rd, plain edition diamond sinter layer, the 4th, cemented carbide base material layer, the 5th, the common diamond working lining that constitutes of heat resistant type diamond sinter layer and plain edition diamond sinter layer.
The specific embodiment
The utility model is described further below with reference to embodiment (accompanying drawing):
Embodiment 1:
As shown in Figure 2, the heat resistant type diamond cutting tooth of present embodiment comprise by under the high pressure high temperature condition in the mode of sintering attached to the diamond working lining 5 on the cemented carbide base material layer 4 (cemented carbide substrate), described diamond working lining 5 comprises attached to the plain edition diamond sinter layer (shock resistance type) 3 of the heat resistance on the cemented carbide base material layer 4＜700 ℃ with attached to the heat resistant type diamond sinter layer 2 of heat resistance＞700 on the plain edition diamond sinter layer 3 ℃; Described plain edition diamond sinter layer 3 is to be formed by the diamond dust of 88-94wt% and metal Ni or Fe or Co sintering under superhigh-temperature and-pressure; Heat resistant type diamond sinter layer 2 by the diamond dust of 86-92wt% and metal Ni or Fe or Si under superhigh-temperature and-pressure with plain edition diamond sinter layer together sintering form, or constitute by the pure diamond more than the 98wt%; The thickness of described heat resistant type diamond sinter layer 2 is 0.1～0.3mm, and the thickness of plain edition diamond sinter layer 3 is 0.7～3mm; And the bonding surface between described heat resistant type diamond sinter layer 2 and the plain edition diamond sinter layer 3, between plain edition diamond sinter layer 3 and the cemented carbide base material layer 4 is plane structure.
Embodiment 2:
As shown in Figure 3, the difference of the heat resistant type diamond cutting tooth of present embodiment and embodiment 1 is that the bonding surface between described plain edition diamond sinter layer (shock resistance type) 3 and the cemented carbide base material layer 4 is concavo-convex alternate structural plane.
Claims (5)
1, a kind of heat resistant type diamond cutting tooth, it comprises cemented carbide base material layer (4) and attached to the diamond working lining (5) on the cemented carbide base material layer (4), it is characterized in that: described diamond working lining (5) comprises attached to the plain edition diamond sinter layer (3) of heat resistance＜700 on the cemented carbide base material layer (4) ℃ with attached to the heat resistant type diamond sinter layer (2) of heat resistance＞700 on the plain edition diamond sinter layer (3) ℃.
2, heat resistant type diamond cutting tooth according to claim 1 is characterized in that: the bonding surface between described heat resistant type diamond sinter layer (2) and the plain edition diamond sinter layer (3) is a plane structure.
3, heat resistant type diamond cutting tooth according to claim 1 is characterized in that: the bonding surface between described plain edition diamond sinter layer (3) and the cemented carbide base material layer (4) is a plane structure.
4, heat resistant type diamond cutting tooth according to claim 1 is characterized in that: the bonding surface between described plain edition diamond sinter layer (3) and the cemented carbide base material layer (4) is concavo-convex alternate structural plane.
5, heat resistant type diamond cutting tooth according to claim 1 and 2, it is characterized in that: the thickness of described heat resistant type diamond sinter layer (2) is 0.1～0.3mm, the thickness of plain edition diamond sinter layer (3) is 0.7～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200520143635.3U CN2846707Y (en) | 2005-12-22 | 2005-12-22 | Heat resistance diamond cutting teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200520143635.3U CN2846707Y (en) | 2005-12-22 | 2005-12-22 | Heat resistance diamond cutting teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846707Y true CN2846707Y (en) | 2006-12-13 |
Family
ID=37512128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200520143635.3U Expired - Lifetime CN2846707Y (en) | 2005-12-22 | 2005-12-22 | Heat resistance diamond cutting teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846707Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047548A (en) * | 2013-03-13 | 2014-09-17 | 江雨明 | Diamond drill tooth with cobalt content gradient |
| CN104859260A (en) * | 2014-02-25 | 2015-08-26 | 通用电气公司 | System Having Layered Structure And Method Of Making The Same |
-
2005
- 2005-12-22 CN CN200520143635.3U patent/CN2846707Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047548A (en) * | 2013-03-13 | 2014-09-17 | 江雨明 | Diamond drill tooth with cobalt content gradient |
| CN104859260A (en) * | 2014-02-25 | 2015-08-26 | 通用电气公司 | System Having Layered Structure And Method Of Making The Same |
| US11137143B2 (en) | 2014-02-25 | 2021-10-05 | General Electric Company | System having layered structure and method of making the same |
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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 |
Granted publication date: 20061213 |
|
| EXPY | Termination of patent right or utility model |