CN211173944U - A inlay formula and inlay tooth for on diamond bit gauge face - Google Patents
A inlay formula and inlay tooth for on diamond bit gauge face Download PDFInfo
- Publication number
- CN211173944U CN211173944U CN201921362077.8U CN201921362077U CN211173944U CN 211173944 U CN211173944 U CN 211173944U CN 201921362077 U CN201921362077 U CN 201921362077U CN 211173944 U CN211173944 U CN 211173944U
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Abstract
The utility model discloses a pregnant insert of inlay formula that is used for diamond bit gauge face, including pregnant layer of inlaying and parcel tooth post, its characterized in that: a concave cavity is arranged in the wrapping tooth column, the impregnated layer is arranged in the concave cavity, and the outer surface of the upper end of the impregnated layer is in a convex arc shape. The utility model discloses an impregnated tooth of formula of inlaying at the during operation, the arc part contact wall of a well of its addendum portion, contact segment reach even wearing and tearing to the core position of impregnated layer as impregnated insert on central zone and parcel post top layer participates in the guarantor's footpath, and its wearability is compared and is had very big improvement in the glomerocryst. The tooth is used on the drill bit as a gauge protection tooth, and the gauge protection capability of the tooth is further improved.
Description
Technical Field
The utility model relates to a pregnant insert of formula of inlaying that is used for geology, well drilling, mine etc. well drilling diamond bit gauge protection on.
Background
The conventional common-use gear for the gauge protection part of the diamond is polycrystalline, the shape is cylindrical, when the drilling process is carried out, two end parts of the cylindrical gear contact with a well wall firstly, the wear is broken in advance, the gauge protection gear is not worn uniformly, when the wear is in a certain degree, the integral delamination of a polycrystalline layer can be caused, the wear resistance of the whole gauge protection gear matrix is reduced rapidly, the gauge protection capacity of a drill bit is insufficient, and when the drill bit is repaired, the polycrystalline damaged in the matrix is not convenient to take out and replace. Therefore, the drill bit with certain requirements on the gauge protection capacity needs teeth with better wear resistance and economy to improve the gauge protection capacity of the drill bit, prevent diameter shrinkage, facilitate the replacement of gauge protection teeth during the repair of the drill bit and improve the gauge protection performance of the repaired drill bit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the not enough of providing a pregnant insert of formula of inlaying that promotes drill bit guarantor footpath ability exists to above-mentioned prior art.
The utility model discloses the technical scheme who adopts does: the utility model provides a pregnant insert of inlay formula for diamond bit guarantor's footpath, includes and inlays layer and parcel tooth post, its characterized in that: a concave cavity is arranged in the wrapping tooth column, the impregnated layer is arranged in the concave cavity, and the outer surface of the upper end of the impregnated layer is in a convex arc shape.
According to the technical scheme, the impregnated layer is a hot-pressing impregnated insert, so that the impregnated layer and the wrapping tooth column are integrated.
According to the technical scheme, the wrapping tooth column is composed of two layers of powder, the wrapping tooth column comprises a tooth column body and a surface layer located at the upper end part of the outer annular structure of the cavity, the tooth column body is made of tungsten carbide powder, and the surface layer is made of impregnated layer powder.
According to the technical scheme, the thickness of the impregnated powder is 1-2 mm, and the impregnated powder and the tooth column body form a whole through a sintering process.
According to the technical scheme, chamfers are arranged on the outer side of the surface layer and the bottom of the tooth column body.
According to the technical scheme, the impregnated layer has a certain thickness, and the thickness h of the impregnated layer is 3-5 mm.
According to the technical scheme, the side wall of the wrapping tooth column is provided with the axial groove for repairing and taking the tooth.
According to the technical scheme, the axial grooves are axial arc-shaped grooves, and the axial arc-shaped grooves are symmetrically arranged on two sides of the wrapping tooth column.
The utility model discloses the beneficial effect who gains does:
1. the utility model discloses an impregnated tooth of formula of inlaying at the during operation, the arc part contact wall of a well of its addendum portion, contact segment reach even wearing and tearing to the core position of impregnated layer as impregnated insert on central zone and parcel post top layer participates in the guarantor's footpath, and its wearability is compared and is had very big improvement in the glomerocryst. The tooth is used on the drill bit as a gauge protection tooth, and the gauge protection capability of the tooth is further improved.
2. The utility model discloses an arc wall at parcel post bilateral symmetry setting, when the drill bit is reprocessed, the tooth that is more convenient for wear out takes out the change, has solved the reprocessed drill bit and has got the tooth problem, has also promoted the profitability of drill bit simultaneously.
Drawings
Fig. 1 is a three-dimensional structure diagram of the present invention.
Fig. 2 is the three-dimensional structure diagram of the wrapping tooth post of the present invention.
Fig. 3 is a schematic view of the three-dimensional structure of the impregnated layer of the present invention.
Fig. 4 is a main sectional view of the present invention.
Fig. 5 is a top view of the present invention.
Fig. 6 is a schematic size diagram of each component of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-6, the present embodiment provides an embedded impregnated insert for diameter protection of a diamond drill bit, which includes a cylindrical impregnated layer 1 and a cylindrical embedded tooth post 2, wherein a concave cavity 201 is formed in the embedded tooth post, the impregnated layer 1 is disposed in the concave cavity, and the outer surface of the upper end of the impregnated layer is in the shape of a convex arc. The impregnated layer 1 is a hot-press impregnated insert, so that the impregnated layer and the wrapping tooth column 2 are integrated.
In this embodiment, the wrapped tooth post is composed of two layers of powder, and includes a tooth post body 203 and a surface layer 202 located at the upper end of the outer ring-shaped structure of the cavity, the tooth post body 203 is tungsten carbide powder, the surface layer 202 is impregnated layer powder, wherein the thickness of the impregnated layer powder is 1-2 mm, and the impregnated layer powder and the tungsten carbide powder are sintered into a whole in a graphite mold under certain process conditions. The height of the surface layer 202 is almost close to the height of the edge of the impregnated layer 1. In addition, chamfers are provided on the outer side of the surface layer 202 and the bottom of the tooth post body 203 in order to prevent stress concentration.
In this embodiment, as shown in fig. 6, taking a drill diameter a =215.9mm as an example, the diameter D =10mm, the thickness H =5mm, the convex arc radius =108mm, the diameter D =13mm and the height H =8mm of the wrapping tooth column 2.
When the embedded type impregnated tooth works, the cambered surface part of the impregnated layer contacts the well wall, the contact part is uniformly abraded, the central area and the impregnated layer wrapping the surface layer of the tooth column participate in diameter protection as the core part of the impregnated tooth, and the abrasion resistance of the impregnated tooth is greatly improved compared with that of a polycrystalline. The tooth is used on the drill bit as a gauge protection tooth, and the gauge protection capability of the tooth is further improved. And the arc-shaped grooves 204 symmetrically arranged on two sides of the impregnated layer wrapping tooth column are convenient for taking out and replacing the gauge teeth on the repaired drill bit, so that the problem of taking out the teeth of the repaired drill bit is solved, and the profitability of the drill bit is improved.
Claims (10)
1. The utility model provides a pregnant insert of inlay formula for on diamond bit gauge face, includes and inlays layer and parcel tooth post, its characterized in that: the wrapping tooth column comprises two layers of powder, and comprises a tooth column body and a surface layer positioned at the upper end part of an outer annular structure of the cavity, wherein the surface layer is impregnated layer powder.
2. The impregnated insert for use on a gage surface of a diamond drill bit as set forth in claim 1, wherein: the impregnated layer is a hot-pressing impregnated tooth, so that the impregnated layer and the wrapping tooth column are integrated.
3. The impregnated insert for a gage surface of a diamond drill bit as set forth in claim 1 or claim 2, wherein: the tooth column body is made of tungsten carbide powder.
4. The impregnated insert for use on a gage surface of a diamond drill bit as set forth in claim 3, wherein: the thickness of the impregnated powder is 1-2 mm, and the impregnated powder and the tooth column body form a whole through a sintering process.
5. The impregnated insert for use on a gage surface of a diamond drill bit as set forth in claim 3, wherein: the top layer outside all is equipped with the chamfer with tooth post body bottom.
6. The impregnated insert for a gage surface of a diamond drill bit as set forth in claim 1 or claim 2, wherein: the impregnated layer has certain thickness, and its thickness h is 3~5 mm.
7. The impregnated insert for a gage surface of a diamond drill bit as set forth in claim 1 or claim 2, wherein: and an axial groove for repairing and taking the tooth is arranged on the side wall of the wrapping tooth column.
8. The impregnated insert for a gage surface of a diamond drill bit as set forth in claim 7, wherein: the axial grooves are axial arc-shaped grooves, and the axial arc-shaped grooves are symmetrically arranged on two sides of the wrapping tooth column.
9. The impregnated insert for a gage surface of a diamond drill bit as set forth in claim 1 or claim 2, wherein: the diameter of the impregnated layer is as follows: 8-13mm, and the radius of the convex cambered surface is A/2, wherein the diameter of the drill bit is A.
10. The impregnated insert for a gage surface of a diamond drill bit as set forth in claim 1 or claim 2, wherein: the wrapping tooth column is of a columnar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921362077.8U CN211173944U (en) | 2019-08-21 | 2019-08-21 | A inlay formula and inlay tooth for on diamond bit gauge face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921362077.8U CN211173944U (en) | 2019-08-21 | 2019-08-21 | A inlay formula and inlay tooth for on diamond bit gauge face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211173944U true CN211173944U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921362077.8U Active CN211173944U (en) | 2019-08-21 | 2019-08-21 | A inlay formula and inlay tooth for on diamond bit gauge face |
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| CN (1) | CN211173944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610160A (en) * | 2020-12-17 | 2021-04-06 | 同济大学 | Step-shaped composite sheet of CVD diamond layer-impregnated diamond layer-polycrystalline diamond composite sheet layer |
| CN113279701A (en) * | 2021-07-23 | 2021-08-20 | 四川川庆石油钻采科技有限公司 | Wear-resistant erosion-resistant PDC drill bit and design method thereof |
-
2019
- 2019-08-21 CN CN201921362077.8U patent/CN211173944U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610160A (en) * | 2020-12-17 | 2021-04-06 | 同济大学 | Step-shaped composite sheet of CVD diamond layer-impregnated diamond layer-polycrystalline diamond composite sheet layer |
| CN112610160B (en) * | 2020-12-17 | 2022-04-05 | 同济大学 | Step-shaped composite sheet of CVD diamond layer-impregnated diamond layer-polycrystalline diamond composite sheet layer |
| CN113279701A (en) * | 2021-07-23 | 2021-08-20 | 四川川庆石油钻采科技有限公司 | Wear-resistant erosion-resistant PDC drill bit and design method thereof |
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