CN202428727U - Convex-type diamond hard alloy composite sheet - Google Patents
Convex-type diamond hard alloy composite sheet Download PDFInfo
- Publication number
- CN202428727U CN202428727U CN2011205604989U CN201120560498U CN202428727U CN 202428727 U CN202428727 U CN 202428727U CN 2011205604989 U CN2011205604989 U CN 2011205604989U CN 201120560498 U CN201120560498 U CN 201120560498U CN 202428727 U CN202428727 U CN 202428727U
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- hard alloy
- diamond
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- convex
- substrate layer
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Abstract
The utility model discloses a convex-type diamond hard alloy composite sheet which comprises a hard alloy basal body layer and a diamond layer, wherein the hard alloy basal body layer and the diamond layer are formed by sintering at high temperature and under high pressure; the diamond layer is enchased on the hard alloy basal body layer in an arc-shaped bump; and the combination surface of the diamond layer and the hard alloy basal body layer is in an arc-shaped convex surface. With the adoption of the technical scheme and by combining the advantages of flat composite sheets and spherical composite sheets, the impact resistance of the product is further improved on the premise that the wear resistance is ensured, so that the convex-type diamond hard alloy composite sheet is suitable for drilling hard rock.
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 bond 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.
Because the brill tooth during drilling well on the drill bit will bear the powerful cutting resistance in stratum, frictional resistance and impulsive force, therefore require diamond hard alloy complex sheet to have very high hardness, wearability, hear resistance and impact resilience.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 impetus 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 convex diamond hard alloy complex sheet that is applicable to hard-rock boring.
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 convexity of described diamond layer is embedded on the hard alloy substrate layer, and the faying face of diamond layer and hard alloy substrate layer is an arc convex.
The height of said diamond layer is smaller or equal to the bottom surface radius of hard alloy substrate layer.
The carbide alloy boss is arranged on the faying face of said diamond layer and hard alloy substrate layer.
The radius of said carbide alloy boss is less than the bottom surface radius of hard alloy substrate layer.
Adopt the utility model of technique scheme,, under the prerequisite that guarantees wearability, further improved the shock resistance of product, be applicable to creeping into of hard rock in conjunction with plane and sphere composite sheet advantage separately.
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 convexity is embedded on the hard alloy substrate layer 2, and the faying face of diamond layer 1 and hard alloy substrate layer 2 is an arc convex.
The height of diamond layer 1 is smaller or equal to the bottom surface radius of hard alloy substrate layer 2.
On the faying face 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 operation principle of the utility model is: combined plane and sphere composite sheet advantage separately, under the prerequisite that guarantees wearability, further improved the shock resistance of product, mainly be applicable to creeping into of hard rock.
Claims (4)
1. convex 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 convexity of described diamond layer (1) is embedded on the hard alloy substrate layer (2), and the faying face of diamond layer (1) and hard alloy substrate layer (2) is an arc convex.
2. convex 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. convex diamond hard alloy complex sheet according to claim 1 is characterized in that: on the faying face of said diamond layer (1) and hard alloy substrate layer (2) the carbide alloy boss is arranged.
4. convex diamond hard alloy complex sheet according to claim 3 is characterized in that: the radius of said carbide alloy boss is less than the bottom surface radius of hard alloy substrate layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205604989U CN202428727U (en) | 2011-12-29 | 2011-12-29 | Convex-type diamond hard alloy composite sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205604989U CN202428727U (en) | 2011-12-29 | 2011-12-29 | Convex-type diamond hard alloy composite sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202428727U true CN202428727U (en) | 2012-09-12 |
Family
ID=46778198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205604989U Expired - Fee Related CN202428727U (en) | 2011-12-29 | 2011-12-29 | Convex-type diamond hard alloy composite sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202428727U (en) |
-
2011
- 2011-12-29 CN CN2011205604989U patent/CN202428727U/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: 20120912 Termination date: 20131229 |