CN108754273A - A kind of preparation method of Anti-erosion PDC matrix drill bits - Google Patents
A kind of preparation method of Anti-erosion PDC matrix drill bits Download PDFInfo
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- CN108754273A CN108754273A CN201810660396.0A CN201810660396A CN108754273A CN 108754273 A CN108754273 A CN 108754273A CN 201810660396 A CN201810660396 A CN 201810660396A CN 108754273 A CN108754273 A CN 108754273A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/052—Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
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- Engineering & Computer Science (AREA)
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to PDC drill bit technical fields, and in particular to a kind of preparation method of Anti-erosion PDC matrix drill bits, including bit matrix powder are prepared; then the water for being equivalent to its total weight 35-45% is added, ball mill is added, under atmosphere of inert gases; ball milling 16-20 hours; it obtains mixed slurry, after casting, spontaneously dries solidification; isothermal holding 1.5-2.5 hours under conditions of temperature is 140-160 DEG C; then in sintering furnace, 1600-2000 DEG C argon gas protection under keep the temperature 4-6 hours to get.The present invention has the following advantages compared with prior art：Pass through different raw material proportionings in the present invention, coordinate corresponding hybrid technique system, improve the bending strength of drill bit, and then it can be used in the thinner PDC drill bit of scraper, the drilling speed of PDC drill bit is improved, the Binder Phase and hard phase in carcass can be combined preferably, be readily produced popularization, erosion wear resistance enhances, applied widely.
Description
Technical field
The invention belongs to PDC drill bit technical fields, and in particular to a kind of preparation method of Anti-erosion PDC matrix drill bits.
Background technology
In oil drilling, tyre case PDC drill is extensive because good abrasion-resistance makes it use, with the hair of drilling technology
The increasingly complexity of exhibition and drilling condition, under the premise of ensureing drill scraper safety, proposes more the rotating speed of PDC drill bit
High requirement, tyre case PDC drill mainly connect two parts with upper body including bit body, and bit body lower part is carcass, is welded on carcass
It is connected to polycrystalline diamond composite blade, for PDC drill bit, in addition to using more preferable, the more resistant composite polycrystal-diamond of toughness
In addition, change PDC drill bit carcass structure, the thinner scraper of use, improve tyre case PDC drill carcass material bending strength and
Impact flexibility will be further improved and improve PDC drill bit structure and performance, in the prior art by being added in spherical sintered WC
Cobalt enables Binder Phase in carcass and hard phase preferably to combine, and then improves wearability, bending strength and the impact of carcass
Toughness, and then thinner PDC drill bit can be designed, so as to improve the drill bit drilling speed of PDC, and then meet production requirement,
But with the popularization of PDC drill bit use scope, use environment is also more and more severe, and existing PDC drill bit erosion resistance
Requirement is cannot be satisfied, therefore, it is necessary to the further Improvement of PDC drill bit carcass.
Invention content
The purpose of the present invention is for existing problem, provide a kind of preparation method of Anti-erosion PDC matrix drill bits.
The present invention is achieved by the following technical solutions：A kind of preparation method of Anti-erosion PDC matrix drill bits, including with
Lower content：
（1）Bit matrix powder includes the raw material of following parts by weight：Powder size be 375-415 μm 28-32 parts of tungsten-carbide powder,
16-20 parts of tungsten-carbide powder that 46-50 parts of the tungsten-carbide powder that powder size is 140-180 μm, powder size are 60-100 μm,
Ni-based modified materials 8-12 parts, 4-6 parts of carborundum powder, 1-5 parts of nano-carbon powder；
Include the chemical composition of following weight percent in the Ni-based modified powder：Carbon 0.8-1.2%, chromium 15.85-16.25%,
Boron 3.13-3.42%, silicon 4.06-4.25%, iron 3.28-3.68%, cobalt 0.2-0.8%, magnesium 0.1-0.3%, aluminium 0.26-0.38%, it is remaining
Amount is nickel；
（2）According to step（1）The formula mixed raw material of middle offer prepares, and the water for being equivalent to its total weight 35-45% is added, adds
Enter ball mill, under atmosphere of inert gases, ball milling 16-20 hours obtains mixed slurry, after casting, spontaneously dries solidification,
Isothermal holding 1.5-2.5 hours under conditions of temperature is 140-160 DEG C, then in sintering furnace, in 1600-2000 DEG C of argon
Keep the temperature 4-6 hours under gas shielded to get.
As further improvement of these options, the preparation for the tungsten-carbide powder that the powder size is 375-415 μm
Method is plasma rotating electrode atomization, hardness 3025HV；The system for the tungsten-carbide powder that the powder size is 140-180 μm
Preparation Method is plasma rotating electrode atomization, hardness 3045HV, mobility 6.72s/50g, apparent density 9.54g/cm
³；The preparation method for the tungsten-carbide powder that the powder size is 60-100 μm is inducting remolten nodularization, hardness 2837HV, stream
Dynamic property is 6.72s/50g, apparent density 10.05g/cm3.
As further improvement of these options, the hardness of the Ni-based modified materials is 60-64HRc.
As further improvement of these options, the method for modifying of the Ni-based modified powder is to be put into before use
It arrives60The accumulated dose of radiation treatment 12-16min in Co- gamma-ray irradiation instrument, irradiation are 18-22kGy.
As further improvement of these options, the grain size of the nano-carbon powder is 20-60nm, using preceding and suitable
It is 6-8 in ratio of grinding media to material after the silane coupling agent mixing of the microwax, 1-2% of its weight 2-6%:1, rotating speed be 350-450 turn/
Ball milling 4-6 hours under conditions of minute to obtain the final product.
As further improvement of these options, the protective atmosphere of the ball mill be nitrogen and hydrogen with total amount ratio
6-8:1 is mixed to get.
As further improvement of these options, the step（2）Middle water is magnetized water.
The present invention has the following advantages compared with prior art：By different raw material proportionings in the present invention, cooperation is corresponding
Hybrid technique system further improves the toughness and hardness performance of drill bit, improves the bending strength of drill bit, Jin Erneng
It is enough in the thinner PDC drill bit of scraper, improves the drilling speed of PDC drill bit, the Binder Phase in carcass and hard phase can be combined preferably,
It is readily produced popularization, erosion wear resistance enhancing is applied widely.
Specific implementation mode
Embodiment 1
A kind of preparation method of Anti-erosion PDC matrix drill bits, including the following contents：
（1）Bit matrix powder includes the raw material of following parts by weight：Tungsten-carbide powder 30 part, powder of the powder size for 375-415 μm
18 parts of tungsten-carbide powder that 48 parts of the tungsten-carbide powder that last granularity is 140-180 μm, powder size are 60-100 μm, Ni-based modification
10 parts of material, 5 parts of carborundum powder, 3 parts of nano-carbon powder；
Include the chemical composition of following weight percent in the Ni-based modified powder：Carbon 1%, chromium 16%, boron 3.28%, silicon
4.18%, iron 3.45%, cobalt 0.5%, magnesium 0.2%, aluminium 0.32%, surplus are nickel；
（2）According to step（1）The formula mixed raw material of middle offer prepares, and the water for being equivalent to its total weight 40% is added, and ball is added
Grinding machine, under atmosphere of inert gases, ball milling 18 hours obtains mixed slurry, after casting, solidification is spontaneously dried, in temperature
Isothermal holding 2 hours under conditions of being 140-160 DEG C, then in sintering furnace, heat preservation 4-6 is small under 1800 DEG C of argon gas protection
When to get.
Wherein, the preparation method for the tungsten-carbide powder that the powder size is 375-415 μm is plasma rotating electrode mist
Change, hardness 3025HV；The preparation method for the tungsten-carbide powder that the powder size is 140-180 μm is plasma rotating electrode
Atomization, hardness 3045HV, mobility 6.72s/50g, apparent density 9.54g/cm3；The powder size is 60-100 μ
The preparation method of the tungsten-carbide powder of m is inducting remolten nodularization, hardness 2837HV, mobility 6.72s/50g, apparent density
For 10.05g/cm3.
Wherein, the hardness of the Ni-based modified materials is 62HRc；The method of modifying of the Ni-based modified powder is to use
Before be put into60The accumulated dose of radiation treatment 14min in Co- gamma-ray irradiation instrument, irradiation are 20kGy.
Wherein, the grain size of the nano-carbon powder is 20-60nm, using it is preceding be equivalent to its weight 4% microwax,
It is 7 in ratio of grinding media to material after 1.5% silane coupling agent mixing:1, ball milling 5 hours under conditions of rotating speed is 400 revs/min to obtain the final product.
Wherein, the protective atmosphere of the ball mill be nitrogen and hydrogen with total amount ratio 7:1 is mixed to get；The step
（2）Middle water is magnetized water.
Embodiment 2
A kind of preparation method of Anti-erosion PDC matrix drill bits, including the following contents：
（1）Bit matrix powder includes the raw material of following parts by weight：Tungsten-carbide powder 28 part, powder of the powder size for 375-415 μm
20 parts of tungsten-carbide powder that 50 parts of the tungsten-carbide powder that last granularity is 140-180 μm, powder size are 60-100 μm, Ni-based modification
8 parts of material, 4 parts of carborundum powder, 1 part of nano-carbon powder；
Include the chemical composition of following weight percent in the Ni-based modified powder：Carbon 0.8%, chromium 16.25%, boron 3.13%, silicon
4.25%, iron 3.68%, cobalt 0.2%, magnesium 0.3%, aluminium 0.26%, surplus are nickel；
（2）According to step（1）The formula mixed raw material of middle offer prepares, and the water for being equivalent to its total weight 35% is added, and ball is added
Grinding machine, under atmosphere of inert gases, ball milling 20 hours obtains mixed slurry, after casting, solidification is spontaneously dried, in temperature
Isothermal holding 1.5 hours under conditions of being 140 DEG C keeps the temperature 4 hours then in sintering furnace under 2000 DEG C of argon gas protection,
To obtain the final product.
Wherein, the preparation method for the tungsten-carbide powder that the powder size is 375-415 μm is plasma rotating electrode mist
Change, hardness 3025HV；The preparation method for the tungsten-carbide powder that the powder size is 140-180 μm is plasma rotating electrode
Atomization, hardness 3045HV, mobility 6.72s/50g, apparent density 9.54g/cm3；The powder size is 60-100 μ
The preparation method of the tungsten-carbide powder of m is inducting remolten nodularization, hardness 2837HV, mobility 6.72s/50g, apparent density
For 10.05g/cm3.
Wherein, the hardness of the Ni-based modified materials is 64HRc；The method of modifying of the Ni-based modified powder is to use
Before be put into60The accumulated dose of radiation treatment 16min in Co- gamma-ray irradiation instrument, irradiation are 22kGy.
Wherein, the grain size of the nano-carbon powder is 20-60nm, using it is preceding be equivalent to its weight 6% microwax, 1%
Silane coupling agent mixing after, ratio of grinding media to material be 6:1, ball milling 4 hours under conditions of rotating speed is 350 revs/min to obtain the final product.
Wherein, the protective atmosphere of the ball mill be nitrogen and hydrogen with total amount ratio 8:1 is mixed to get；The step
（2）Middle water is magnetized water.
Embodiment 3
A kind of preparation method of Anti-erosion PDC matrix drill bits, including the following contents：
（1）Bit matrix powder includes the raw material of following parts by weight：Tungsten-carbide powder 32 part, powder of the powder size for 375-415 μm
16 parts of tungsten-carbide powder that 46 parts of the tungsten-carbide powder that last granularity is 140-180 μm, powder size are 60-100 μm, Ni-based modification
12 parts of material, 6 parts of carborundum powder, 5 parts of nano-carbon powder；
Include the chemical composition of following weight percent in the Ni-based modified powder：Carbon 1.2%, chromium 15.85%, boron 3.42%, silicon
4.06%, iron 3.68%, cobalt 0.8%, magnesium 0.1%, aluminium 0.38%, surplus are nickel；
（2）According to step（1）The formula mixed raw material of middle offer prepares, and the water for being equivalent to its total weight 45% is added, and ball is added
Grinding machine, under atmosphere of inert gases, ball milling 16 hours obtains mixed slurry, after casting, solidification is spontaneously dried, in temperature
Isothermal holding 2.5 hours under conditions of being 160 DEG C keeps the temperature 6 hours then in sintering furnace under 1600 DEG C of argon gas protection,
To obtain the final product.
Wherein, the preparation method for the tungsten-carbide powder that the powder size is 375-415 μm is plasma rotating electrode mist
Change, hardness 3025HV；The preparation method for the tungsten-carbide powder that the powder size is 140-180 μm is plasma rotating electrode
Atomization, hardness 3045HV, mobility 6.72s/50g, apparent density 9.54g/cm3；The powder size is 60-100 μ
The preparation method of the tungsten-carbide powder of m is inducting remolten nodularization, hardness 2837HV, mobility 6.72s/50g, apparent density
For 10.05g/cm3.
Wherein, the hardness of the Ni-based modified materials is 604HRc；The method of modifying of the Ni-based modified powder is to use
Before be put into60The accumulated dose of radiation treatment 12min in Co- gamma-ray irradiation instrument, irradiation are 18kGy.
Wherein, the grain size of the nano-carbon powder is 20-60nm, is using microwax, 1- preceding and that be equivalent to its weight 2%
It is 8 in ratio of grinding media to material after 2% silane coupling agent mixing:1, ball milling 6 hours under conditions of rotating speed is 450 revs/min to obtain the final product.
Wherein, the protective atmosphere of the ball mill be nitrogen and hydrogen with total amount ratio 6:1 is mixed to get；The step
（2）Middle water is magnetized water.
Control group 1 is set, the tungsten-carbide powder that powder size in embodiment 1 is 375-415 μm is substituted for powder size
For 140-180 μm of tungsten-carbide powder, remaining content is constant；Control group 2 is set, is 60-100 μ by powder size in embodiment 1
The tungsten-carbide powder of m is substituted for the tungsten-carbide powder that powder size is 140-180 μm, remaining content is constant；Control group 3 is set,
Ni-based modified materials in embodiment 1 are removed, remaining content is constant；Control group 4 is set, carborundum powder in embodiment 1 is removed,
Remaining content is constant；Control group 5 is set, nano-carbon powder in embodiment 1 is removed, remaining content is constant；
Carcass erosion resistance experimental method：
Each group carcass is sampled and is weighed, specimen size be 50 × 30 × 6.3mm, in sand-blasting machine by internal diameter be 5mm nozzle
The distance of test coupon 2cm carries out sandblasting, sandblasting duration 3 minutes with 60 degree of inclination angles；Sample taking-up is weighed again；Weight
Difference is the weight fallen by erosion, and the weight fallen by erosion divided by initial weight are to spray the ratio of removing, 10 repetitions of every group of setting
Example, is averaged, and spray illustrates that sample erosive wear resistance is better except ratio is smaller.
Obtain following data：
Table 1
It can be seen that in the present invention that erosive wear resistance is significantly improved compared with prior art by data in table 1, and then can
Ensure its anti-erosion life in underground work.
Claims (7)
1. a kind of preparation method of Anti-erosion PDC matrix drill bits, which is characterized in that including the following contents：
（1）Bit matrix powder includes the raw material of following parts by weight：Powder size be 375-415 μm 28-32 parts of tungsten-carbide powder,
16-20 parts of tungsten-carbide powder that 46-50 parts of the tungsten-carbide powder that powder size is 140-180 μm, powder size are 60-100 μm,
Ni-based modified materials 8-12 parts, 4-6 parts of carborundum powder, 1-5 parts of nano-carbon powder；
Include the chemical composition of following weight percent in the Ni-based modified powder：Carbon 0.8-1.2%, chromium 15.85-16.25%,
Boron 3.13-3.42%, silicon 4.06-4.25%, iron 3.28-3.68%, cobalt 0.2-0.8%, magnesium 0.1-0.3%, aluminium 0.26-0.38%, it is remaining
Amount is nickel；
（2）According to step（1）The formula mixed raw material of middle offer prepares, and the water for being equivalent to its total weight 35-45% is added, adds
Enter ball mill, under atmosphere of inert gases, ball milling 16-20 hours obtains mixed slurry, after casting, spontaneously dries solidification,
Isothermal holding 1.5-2.5 hours under conditions of temperature is 140-160 DEG C, then in sintering furnace, in 1600-2000 DEG C of argon
Keep the temperature 4-6 hours under gas shielded to get.
2. a kind of preparation method of Anti-erosion PDC matrix drill bits as described in claim 1, which is characterized in that the powder size
Preparation method for 375-415 μm of tungsten-carbide powder is plasma rotating electrode atomization, hardness 3025HV；The powder grain
The preparation method for the tungsten-carbide powder that degree is 140-180 μm is plasma rotating electrode atomization, hardness 3045HV, and mobility is
6.72s/50g, apparent density 9.54g/cm3；The preparation method for the tungsten-carbide powder that the powder size is 60-100 μm is
Inducting remolten nodularization, hardness 2837HV, mobility 6.72s/50g, apparent density 10.05g/cm3.
3. a kind of preparation method of Anti-erosion PDC matrix drill bits as described in claim 1, which is characterized in that the Ni-based modification
The hardness of material is 60-64HRc.
4. a kind of preparation method of Anti-erosion PDC matrix drill bits as described in claim 1, which is characterized in that the Ni-based modification
The method of modifying of powder is to be put into before use60Radiation treatment 12-16min in Co- gamma-ray irradiation instrument, total agent of irradiation
Amount is 18-22kGy.
5. a kind of preparation method of Anti-erosion PDC matrix drill bits as described in claim 1, which is characterized in that the nano-carbon powder
Grain size be 20-60nm, using it is preceding be equivalent to the microwax of its weight 2-6%, after the silane coupling agent of 1-2% mixes,
Ratio of grinding media to material is 6-8:1, ball milling 4-6 hours under conditions of rotating speed is 350-450 revs/min to obtain the final product.
6. a kind of preparation method of Anti-erosion PDC matrix drill bits as described in claim 1, which is characterized in that the ball mill
Protective atmosphere be nitrogen and hydrogen with total amount ratio 6-8:1 is mixed to get.
7. a kind of preparation method of Anti-erosion PDC matrix drill bits as described in claim 1, which is characterized in that the step（2）In
Water is magnetized water.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2591019A (en) * | 2019-12-31 | 2021-07-14 | Element Six Uk Ltd | Polycrystalline diamond constructions & methods of making same |
| GB2591020A (en) * | 2019-12-31 | 2021-07-14 | Element Six Uk Ltd | Polycrystalline diamond constructions & methods of making same |
| 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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| CN105695784A (en) * | 2016-01-29 | 2016-06-22 | 柳州市安龙机械设备有限公司 | Preparation method for corrosion-resistant hard alloy |
| CN106319317A (en) * | 2015-06-18 | 2017-01-11 | 河北小蜜蜂工具集团有限公司 | Blank formula for high-strength petroleum drill bit and preparation method thereof |
| CN107165582A (en) * | 2017-07-05 | 2017-09-15 | 中南大学 | A kind of diamond helical positioning distribution superthin layer composite drill bit and its manufacture craft |
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2018
- 2018-06-25 CN CN201810660396.0A patent/CN108754273A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319317A (en) * | 2015-06-18 | 2017-01-11 | 河北小蜜蜂工具集团有限公司 | Blank formula for high-strength petroleum drill bit and preparation method thereof |
| CN105695784A (en) * | 2016-01-29 | 2016-06-22 | 柳州市安龙机械设备有限公司 | Preparation method for corrosion-resistant hard alloy |
| CN107165582A (en) * | 2017-07-05 | 2017-09-15 | 中南大学 | A kind of diamond helical positioning distribution superthin layer composite drill bit and its manufacture craft |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2591019A (en) * | 2019-12-31 | 2021-07-14 | Element Six Uk Ltd | Polycrystalline diamond constructions & methods of making same |
| GB2591020A (en) * | 2019-12-31 | 2021-07-14 | Element Six Uk Ltd | Polycrystalline diamond constructions & methods of making same |
| 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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