CN107023261B - Hard slipping stratum diamond composite drill bit and preparation method thereof - Google Patents
Hard slipping stratum diamond composite drill bit and preparation method thereof Download PDFInfo
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- CN107023261B CN107023261B CN201710447313.5A CN201710447313A CN107023261B CN 107023261 B CN107023261 B CN 107023261B CN 201710447313 A CN201710447313 A CN 201710447313A CN 107023261 B CN107023261 B CN 107023261B
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 122
- 239000010432 diamond Substances 0.000 title claims abstract description 122
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 205
- 239000011159 matrix material Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 229910002804 graphite Inorganic materials 0.000 claims description 16
- 239000010439 graphite Substances 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 24
- 239000011435 rock Substances 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005755 formation reaction Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000000227 grinding Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- B22F1/0003—
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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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a hard slipping stratum diamond composite drill bit and a preparation method thereof, belonging to the technical field of drilling, wherein the drill bit is composed of a rigid body and impregnated block cutting blades, the impregnated block cutting blades are fixedly arranged on the end face of the rigid body, the number of the impregnated block cutting blades is plural, a fan-shaped water gap is arranged between any two adjacent impregnated block cutting blades, the lip face of the impregnated block cutting blades has a gradient, and a corrugated groove is arranged on the lip face; the invention also provides a method for preparing the drill, the corrugated grooves of the invention improve the rock cutting efficiency and the chip removing effect, the diamond cutting strips and the impregnated diamond are reasonably arranged, and the hardness difference of the matrix and the diamond cutting strips of the impregnated cutting blade is used to effectively improve the service life and the drilling efficiency of the drill.
Description
Technical Field
The invention belongs to the technical field of drilling, and relates to a drill bit, in particular to an impregnated diamond drill bit for drilling a hard slipping stratum and a preparation method thereof, wherein the impregnated diamond drill bit is capable of keeping continuous crushing capacity.
Background
Drilling of hard, weakly abrasive formations, also known as "slip" formations, has long been a difficult problem for drilling operations. The novel drill bit has the characteristics of compact and complete rock, high compression resistance and hardness, extremely low drilling aging, extremely easy polishing and slipping phenomenon that the drill bit does not enter a ruler. With the development of deep mining work, the depth, frequency and thickness of the formation which is extremely difficult to drill are increased, and how to effectively solve the problem is increasingly prominent and important. The rock crushing process of the diamond-impregnated bit is organically combined reflection of various rock crushing modes and changes along with the change of factors such as rock properties, working states and the like. In the prior art, many scholars' studies have shown that the rock breaking process of diamond-impregnated bits is a combination of micro-cutting scoring breaking and abrasive wear breaking, mainly in the drilling of hard "slipping" formations.
Currently, for the "slip" formation diamond bit drilling slip problem, conventional treatments include:
1. the manual cutting edge of the diamond bit adopts auxiliary means such as grinding method, sand blasting method, lip surface acid etching method, hole bottom sand casting grinding, sand adding in flushing fluid and the like to abrade the bit matrix to realize the cutting edge of the diamond bit.
2. When a soft matrix drill bit drills into a slipping stratum, people often adopt a method for reducing the hardness of a matrix in order to accelerate abrasion of the matrix and accelerate cutting of diamond.
3. The special-shaped lip face drill mainly refers to a high-low edge diamond drill and a concentric circle sharp tooth drill, and the design guiding thought is to reduce the contact area between the lip face of the drill and the rock face of the hole bottom and improve the pressure of the diamond lip face to the rock per unit area.
However, the above-mentioned several conventional treatment methods have the following problems: the manual cutting edge method of the diamond bit is only an emergency auxiliary means for solving the slipping problem, and is not a fundamental solution. Practice has proven that the effect of overcoming the phenomenon of drill bit slipping by using the soft matrix is not good. After the lip face teeth of the special-shaped lip face drill bit are worn, the contact area of the drill bit lip face and rock is gradually increased, the specific pressure of the drill bit is reduced, and most of the drilling time of the whole drill bit is not greatly different from that of a common drill bit.
The common diamond-impregnated drill bit needs larger drilling pressure and higher rotating speed due to micro cutting and grinding of broken rock, the diamond cutting edge is fast in heating, sharp teeth are easy to be ground and polished, the drilling speed is fast, and drilling capability is lost.
Disclosure of Invention
In order to drill hard slipping stratum, improve the capability of continuous breaking rock of the drill bit and improve drilling efficiency, the invention provides a diamond composite drill bit for the hard slipping stratum and a preparation method thereof.
In order to achieve the above purpose, the present invention provides a diamond composite drill bit for hard slipping stratum, which is composed of a rigid body and an impregnated block cutting blade, and is characterized in that: the impregnated block cutting blades are fixedly arranged on the end face of the rigid body, the number of the impregnated block cutting blades is plural, a fan-shaped water gap is arranged between any two adjacent impregnated block cutting blades, each impregnated block cutting blade consists of a matrix and diamond particles impregnated on the matrix, the content of the diamond particles is 20% by volume, the granularity is 35-40 meshes, the lip face of each impregnated block cutting blade is provided with a gradient, and the lip face is provided with a corrugated groove; and a layer of diamond cutting strip is inlaid at the cutting end of the impregnated cutting blade, the diamond cutting strip is arranged on the impregnated cutting blade in a negative cutting angle, the cutting direction of the diamond cutting strip forms an included angle of 5-30 degrees with the axis of the drill bit, and the diamond cutting strip is a PCD diamond cutting strip or a CVD diamond cutting strip.
Preferably, the shape of the lip surface of the impregnated cutting blade is formed by combining a straight line segment and an arc line segment, wherein the straight line segment is tangent to the arc line segment, an included angle of 60-85 degrees is formed between the straight line segment and the axis of the drill, and the radius of the arc line segment is larger than the thickness of the impregnated cutting blade along the radial direction of the drill.
Preferably, the lip surface shape of the impregnated cutting blade is arc-shaped, and the curvature radius of the arc is larger than the thickness of the impregnated cutting blade along the radial direction of the drill bit.
The diamond cutting strip is a diamond cutting saw blade, and the diamond cutting saw blades are arranged in a staggered manner in sequence front and back.
The diamond cutting strips are of columnar structures and are uniformly arranged on the impregnated block cutting blades, and the cross sections of the diamond cutting strips are round, rectangular or diamond-shaped.
The central angle of the fan-shaped water gap is 5-30 degrees.
And a groove is arranged on the fan-shaped water gap.
The invention also provides a method for preparing the hard slipping stratum diamond composite drill bit, which is characterized in that: comprises the steps of,
step one, placing a graphite die on an operation table, and arranging diamond cutting strips in the graphite die according to design requirements;
step two, after the diamond cutting strips are arranged, filling matrix materials containing diamond particles into a graphite mold, and then placing into a rigid body, wherein the volume percentage of the diamond particles is 20%, and the granularity is 35-40 meshes;
and thirdly, placing a graphite mold filled with the matrix material containing the diamond particles in an intermediate frequency induction furnace, sintering the matrix material containing the diamond particles by adopting a non-pressure impregnation method, heating to 1020 ℃ at a heating rate of 120 ℃/min, preserving heat for 10min, then placing into heat-preserving sand, cooling for 24h, removing the graphite mold, and processing and molding.
Further, the carcass material in the second step is composed of the following components in percentage by mass: tungsten carbide WC powder: 50%, cemented carbide YG6 powder: 18%, nickel Ni powder: 5%, mn powder: 3%, cobalt Co powder: 2%, tin bronze ZQSN6-6-3 powder: 22%.
Through the design scheme, the invention has the following beneficial effects: the invention provides a hard slipping stratum diamond composite drill bit and a preparation method thereof, wherein a lip surface of an impregnated block cutting blade is provided with a certain inclination to increase specific pressure, a diamond cutting strip is embedded at a cutting end of the impregnated block cutting blade, namely, at a higher end of the lip surface, and the diamond cutting strip is arranged in a negative cutting angle manner, wherein the cutting angle is 5-30 degrees so as to achieve the aim of facilitating cutting and protecting a tooth edge at the same time, meanwhile, the hardness of a matrix of the impregnated block cutting blade is different from that of the diamond cutting strip, the arrangement form of the diamond cutting strip realizes that the cutting end of the impregnated block cutting blade has the characteristic of being alternate between soft and hard, so that the drill bit has high and continuous rock breaking capability, high wear resistance and low resistance. The corrugated grooves are designed to improve rock cutting efficiency and chip removal effect, increase heat dissipation area, and the diamond cutting strips and impregnated diamond are reasonably arranged, so that the hardness difference between the matrix of the impregnated block cutting blade and the diamond cutting strips is utilized, the arrangement form of the diamond cutting strips realizes that the cutting end of the impregnated block cutting blade has the characteristic of alternately hardness and softness, and the service life and drilling efficiency of the drill bit are effectively improved. The drill bit provided by the invention not only can be used for hard slipping stratum, but also can be used for drilling soft and hard interbedded rock, the cutting action of the lip surface is beneficial to rapid drilling when drilling soft stratum, and the saw-tooth bottom lip surface continuously generated when drilling hard stratum can drill into stratum like a conventional saw-tooth diamond-impregnated drill bit.
Drawings
The technical scheme of the present invention will be described in further detail below with reference to the accompanying drawings and examples.
Fig. 1 is a schematic view of a hard slip formation diamond composite drill bit according to a first embodiment of the present invention.
Fig. 2 is a top view of a hard slip formation diamond composite drill bit according to a first embodiment of the present invention.
Fig. 3 is a schematic view of a first embodiment of an impregnated cutting blade according to the invention.
Fig. 4 is a schematic view of the cutting angle of the impregnated cutting blade according to the first embodiment of the invention.
Fig. 5 is a schematic view of a diamond composite drill bit for a hard slip formation according to a second embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view of a second embodiment of an impregnated cutting insert according to the invention.
Fig. 7 is a schematic view of a diamond composite drill bit for a hard slip formation according to a third embodiment of the present invention.
Fig. 8 is a schematic cross-sectional view of a cutting insert-impregnated blade according to a third embodiment of the invention.
Fig. 9 is a schematic view of a diamond composite drill bit for a hard slip formation according to a fourth embodiment of the present invention.
Fig. 10 is a schematic cross-sectional view of a fourth embodiment of an impregnated cutting insert according to the invention.
In the figure: 1-rigid body, 2-impregnated block cutting blade, 3-diamond cutting strip and 4-fan-shaped water gap.
Detailed Description
Well-known methods, procedures and flows have not been described in detail so as not to obscure the nature of the invention.
The invention provides a hard slipping stratum diamond composite drill bit, which consists of a rigid body 1 and impregnated block cutting blades 2, wherein the impregnated block cutting blades 2 are fixedly arranged on the end face of the rigid body 1, the number of the impregnated block cutting blades is plural, a fan-shaped water gap 4 is arranged between any two adjacent impregnated block cutting blades 2, the impregnated block cutting blades 2 consist of a matrix and diamond particles impregnated on the matrix, the volume percentage of the diamond particles is 20%, the granularity is 35-40 meshes, the matrix of the impregnated block cutting blades 2 is made of medium hardness materials, the Rockwell hardness HRC is 30-40, the lip face of the impregnated block cutting blades 2 is provided with a gradient, and the lip face is provided with corrugated grooves; the diamond cutting strip 3 is embedded in the cutting end of the impregnated cutting blade 2, the diamond cutting strip 3 is arranged on the impregnated cutting blade in a negative cutting angle, the cutting direction of the diamond cutting strip 3 forms an included angle of 5-30 degrees with the axis of the drill bit, the diamond cutting strip 3 is a PCD diamond cutting strip or a CVD diamond cutting strip, the carcass of the impregnated cutting blade 2 and the diamond cutting strip 3 are different in hardness, the carcass of the impregnated cutting blade 2 is made of medium hardness materials, rockwell hardness HRC is 30-40, the carcass 2 of the impregnated cutting blade and the diamond cutting strip 3 are different in hardness, the arrangement form of the diamond cutting strip 3 realizes that the cutting end of the impregnated cutting blade 2 is soft and hard, and the drill bit has high-efficiency continuous rock breaking capability, strong wear resistance and low resistance.
Example 1
Referring to fig. 1, 2, 3 and 4, the hard slipping stratum diamond composite drill bit of the present embodiment is composed of a rigid body 1 and an impregnated block cutting blade 2; one layer of diamond cutting strip 3 is embedded at the higher end of the impregnated block cutting blade 2, the diamond cutting strip 3 is a diamond cutting saw blade, the diamond cutting saw blade is orderly arranged in a front-back mode and is arranged in a negative cutting angle mode, and the cutting angle alpha is 5-30 degrees; the lip surface shape of the impregnated cutting blade 2 is formed by combining a straight line segment and an arc line segment, wherein the straight line segment is tangent to the arc line segment, an included angle of 60-85 degrees is formed between the straight line segment and the axis of the drill bit, the radius of the arc line segment is larger than the radial thickness of the impregnated cutting blade 2 along the drill bit, the impregnated cutting blade has the functions of wear resistance, resistance reduction and desorption, the hardness of a matrix of the impregnated cutting blade 2 is different from that of a diamond cutting strip 3 by adopting a plurality of impregnated cutting blades 2, the arrangement form of the diamond cutting strip 3 realizes that the cutting end of the impregnated cutting blade 2 has the characteristic of alternate softness and hardness, the drill bit has high and continuous rock breaking capacity, strong wear resistance and low resistance, a fan-shaped water gap 4 is arranged between any two adjacent impregnated cutting blades 2, grooves are designed on the circular angle of each fan-shaped water gap 4 is 5-30 degrees.
Example two
Referring to fig. 5 and 6, the hard slipping stratum diamond composite drill bit of the present embodiment is composed of a rigid body 1 and an impregnated block cutting blade 2; the impregnated block cutting blade 2 is inlaid with a plurality of columnar diamond cutting strips 3 with circular cross sections, the columnar diamond cutting strips 3 with circular cross sections are uniformly arranged on the impregnated block cutting blade 2 and have a certain inclination, and are arranged in a negative cutting angle mode, and the cutting angle is 5-30 degrees; the lip surface of the impregnated cutting blade 2 is arc-shaped, the curvature radius of the arc is larger than the radial thickness of the impregnated cutting blade 2 along the drill bit, and the lip surface is provided with a corrugated groove; the hardness of the matrix of the impregnated cutting blade 2 is different from that of the diamond cutting strips 3, the arrangement form of the diamond cutting strips 3 realizes that the cutting ends of the impregnated cutting blade 2 have the characteristic of alternately softness and hardness, so that the drill bit has high-efficiency continuous rock breaking capability, strong wear resistance and low resistance, a fan-shaped water gap 4 is arranged between any two adjacent impregnated cutting blades 2, grooves are designed on the fan-shaped water gap 4, and the central angle of each fan-shaped water gap 4 is 5-30 degrees.
Example III
Referring to fig. 7 and 8, the hard slipping stratum diamond composite drill bit of the present embodiment is composed of a rigid body 1 and an impregnated block cutting blade 2; the impregnated cutting blade 2 is inlaid with a plurality of columnar diamond cutting strips 3 with rectangular cross sections, the columnar diamond cutting strips 3 with rectangular cross sections are uniformly arranged on the impregnated cutting blade 2 and have a certain inclination, and are arranged in a negative cutting angle mode, and the cutting angle is 5-30 degrees; the shape of the lip surface of the impregnated cutting blade 2 is arc-shaped, the arc-shaped curvature radius is larger than the radial thickness of the impregnated cutting blade 2 along the drill bit, corrugated grooves are formed in the lip surface, the hardness of the matrix of the impregnated cutting blade 2 is different from that of the diamond cutting strip 3, the arrangement mode of the diamond cutting strip 3 realizes that the cutting end of the impregnated cutting blade 2 has the characteristic of alternately soft and hard, the drill bit has high-efficiency continuous rock breaking capacity, high wear resistance and low resistance, a fan-shaped water gap 4 is formed between any two adjacent impregnated cutting blades 2, grooves are designed on the fan-shaped water gap 4, and the central angle of each fan-shaped water gap 4 is 5-30 degrees.
Example IV
Referring to fig. 9 and 10, the hard slipping stratum diamond composite drill bit of the present embodiment is composed of a rigid body 1 and an impregnated block cutting blade 2; the impregnated block cutting blade 2 is inlaid with a plurality of columnar diamond cutting strips 3 with diamond-shaped cross sections, the columnar diamond cutting strips 3 with diamond-shaped cross sections are uniformly arranged on the impregnated block cutting blade 2 and have a certain inclination, and are arranged in a negative cutting angle manner, and the cutting angle is 5-30 degrees; the shape of the lip surface of the impregnated cutting blade 2 is arc-shaped, the arc-shaped curvature radius is larger than the radial thickness of the impregnated cutting blade 2 along the drill bit, corrugated grooves are formed in the lip surface, the hardness of the matrix of the impregnated cutting blade 2 is different from that of the diamond cutting strip 3, the arrangement mode of the diamond cutting strip 3 realizes that the cutting end of the impregnated cutting blade 2 has the characteristic of alternately soft and hard, the drill bit has high-efficiency continuous rock breaking capacity, high wear resistance and low resistance, a fan-shaped water gap 4 is formed between any two adjacent impregnated cutting blades 2, grooves are designed on the fan-shaped water gap 4, and the central angle of each fan-shaped water gap 4 is 5-30 degrees.
The invention also provides a method for preparing the hard slipping stratum diamond composite drill bit, which comprises the following steps,
placing a graphite die on an operation table, and arranging diamond cutting strips 3 in the graphite die according to design requirements;
step two, after the diamond cutting strip 3 is arranged, filling a matrix material containing diamond particles into a graphite die, and then putting the graphite die into a rigid body 1, wherein the diamond particles have the content of 20% by volume and the granularity of 35-40 meshes;
and thirdly, placing a graphite mold filled with the matrix material containing the diamond particles in an intermediate frequency induction furnace, sintering the matrix material containing the diamond particles by adopting a non-pressure impregnation method, heating to 1020 ℃ at a heating rate of 120 ℃/min, preserving heat for 10min, then placing into heat-preserving sand, cooling for 24h, removing the graphite mold, and processing and molding.
Further, the carcass material in the second step is composed of the following components in percentage by mass: tungsten carbide WC powder: 50%, cemented carbide YG6 powder: 18%, nickel Ni powder: 5%, mn powder: 3%, cobalt Co powder: 2%, tin bronze ZQSN6-6-3 powder: 22%.
The invention provides a working principle and a working process of a hard slipping stratum diamond composite drill bit, wherein:
in the drilling process, one end of the impregnated cutting blade 2, which is inlaid with the diamond cutting strip 3, is pressed into rock preferentially, and in the rotating process, the cutting end of the impregnated cutting blade 2, namely the end with a higher lip surface, is arranged in a mode that the diamond cutting strip 3 is at a negative cutting angle, and the cutting angle is 5-30 degrees so as to achieve the aim of being beneficial to cutting and protecting tooth edges. The inclination of the lip surface and the corrugated grooves are arranged, so that the diamond cutting strip 3 and the impregnated block cutting blade 2 have wear resistance, drag reduction and desorption effects, and the drill bit has high-efficiency continuous rock breaking capability, high wear resistance and low resistance. The inclination of the lip surface and the arrangement of the corrugated grooves are beneficial to better flowing of flushing fluid through the bottom surface of the drill bit and improve the cooling condition of the drill bit. The drill bit provided by the invention can also be used for drilling soft and hard interbedded rock, the cutting action of the lip surface is beneficial to rapid drilling when drilling soft stratum, and the saw-tooth bottom lip surface continuously generated when drilling hard stratum can drill into stratum like a conventional saw-tooth impregnated diamond drill bit.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A diamond composite drill bit for hard slipping stratum is composed of a rigid body (1) and an impregnated block cutting blade (2), and is characterized in that: the diamond-impregnated cutting blade (2) is fixedly arranged on the end face of the rigid body (1), the number of the diamond-impregnated cutting blades is plural, a fan-shaped water gap (4) is arranged between any two adjacent diamond-impregnated cutting blades (2), each impregnated cutting blade (2) consists of a matrix and diamond particles impregnated on the matrix, the volume percentage of the diamond particles is 20%, the granularity is 35-40 meshes, the lip face of each impregnated cutting blade (2) is provided with a gradient, the lip face is provided with a corrugated groove, a layer of diamond cutting strips (3) are inlaid at the cutting end of each impregnated cutting blade (2), the diamond cutting strips (3) are arranged on each impregnated cutting blade (2) in a negative cutting angle, the cutting direction of each diamond cutting strip (3) forms an included angle of 5-30 degrees with the axis of the drill, and each diamond cutting strip (3) is a diamond cutting strip or a CVD diamond cutting strip;
the shape of the lip surface of the impregnated cutting blade (2) is formed by combining a straight line segment and an arc line segment, wherein the straight line segment is tangent to the arc line segment, an included angle of 60-85 degrees is formed between the straight line segment and the axis of the drill, and the radius of the arc line segment is larger than the thickness of the impregnated cutting blade (2) along the radial direction of the drill;
or the lip surface shape of the impregnated block cutting blade (2) is arc-shaped, and the curvature radius of the arc is larger than the thickness of the impregnated block cutting blade (2) along the radial direction of the drill bit;
the diamond cutting strip (3) is a diamond cutting saw blade, and the diamond cutting saw blades are arranged in a staggered manner in sequence front and back;
or the diamond cutting strips (3) are in a columnar structure and are uniformly arranged on the impregnated block cutting blades (2), and the cross section of each diamond cutting strip (3) is round, rectangular or diamond;
the material of the matrix is composed of the following components in percentage by mass: tungsten carbide WC powder: 50%, cemented carbide YG6 powder: 18%, nickel Ni powder: 5%, mn powder: 3%, cobalt Co powder: 2%, tin bronze ZQSN6-6-3 powder: 22%.
2. A hard slip formation diamond composite drill bit according to claim 1, wherein: the central angle of the fan-shaped water gap (4) is 5-30 degrees.
3. A hard slip formation diamond composite drill bit according to claim 1, wherein: and a groove is arranged on the fan-shaped water gap (4).
4. A method of making the hard slip formation diamond composite drill bit of claim 1, comprising the steps of:
firstly, placing a graphite die on an operation table, and arranging diamond cutting strips (3) in the graphite die according to design requirements;
step two, after the diamond cutting strips (3) are distributed, filling matrix materials containing diamond particles into a graphite die, and then putting the matrix materials into a rigid body (1);
and thirdly, placing a graphite mold filled with the matrix material containing the diamond particles in an intermediate frequency induction furnace, sintering the matrix material containing the diamond particles by adopting a non-pressure impregnation method, heating to 1020 ℃ at a heating rate of 120 ℃/min, preserving heat for 10min, then placing into heat-preserving sand, cooling for 24h, removing the graphite mold, and processing and molding.
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| 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 |
| CN113622827B (en) * | 2021-08-31 | 2022-05-17 | 中国地质大学（武汉） | Diamond bit for drilling into fractured hard rock stratum |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3347696A1 (en) * | 1983-12-31 | 1985-07-11 | Bergwerksverband Gmbh, 4300 Essen | Device for the rotary drilling of rock |
| US5314033A (en) * | 1992-02-18 | 1994-05-24 | Baker Hughes Incorporated | Drill bit having combined positive and negative or neutral rake cutters |
| CN201184132Y (en) * | 2007-12-04 | 2009-01-21 | 西南石油大学 | Polycrystalline diamond composite sheet |
| CN101627177A (en) * | 2006-08-30 | 2010-01-13 | 贝克休斯公司 | High-abrasive material is applied to the method for exterior surfaces of earth-boring tools and the structure of acquisition |
| CN201546625U (en) * | 2009-11-09 | 2010-08-11 | 成都迪普金刚石钻头有限责任公司 | PDC drill bit for avoiding negative cutting angles of balling |
| CN102606081A (en) * | 2012-03-28 | 2012-07-25 | 吉林大学 | Efficient, abrasion-resistant and shock-resistant polycrystalline diamond compact |
| CN102661124A (en) * | 2012-04-20 | 2012-09-12 | 吉林大学 | Wear-resistant PDC (polycrystalline diamond compact) drill bit capable of efficiently reaming holes |
| CN102828696A (en) * | 2012-09-11 | 2012-12-19 | 吉林大学 | Iron-based diamond-impregnated bit for drilling in hard slipping foundation |
| CN104399992A (en) * | 2014-10-20 | 2015-03-11 | 四川川庆石油钻采科技有限公司 | Manufacturing method of double-cutting diamond impregnated insert |
| CN105756562A (en) * | 2016-04-15 | 2016-07-13 | 陕西太合科技有限公司 | Steel body PDC (Polycrystalline Diamond Compact) directional bit for directional drilling under coal mine |
| CN105840105A (en) * | 2016-06-15 | 2016-08-10 | 吉林大学 | PDC (Polycrystalline diamond compact)-impregnated segment hybrid self-adaptive drill bit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2396636B (en) * | 2002-12-23 | 2006-06-07 | Smith International | An earth-boring bit and a method for forming a bit |
| US8211203B2 (en) * | 2008-04-18 | 2012-07-03 | Smith International, Inc. | Matrix powder for matrix body fixed cutter bits |
| WO2014081654A1 (en) * | 2012-11-21 | 2014-05-30 | National Oilwell DHT, L.P. | Fixed cutter drill bit cutter elements including hard cutting tables made from cvd synthetic diamonds |
-
2017
- 2017-06-14 CN CN201710447313.5A patent/CN107023261B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3347696A1 (en) * | 1983-12-31 | 1985-07-11 | Bergwerksverband Gmbh, 4300 Essen | Device for the rotary drilling of rock |
| US5314033A (en) * | 1992-02-18 | 1994-05-24 | Baker Hughes Incorporated | Drill bit having combined positive and negative or neutral rake cutters |
| CN101627177A (en) * | 2006-08-30 | 2010-01-13 | 贝克休斯公司 | High-abrasive material is applied to the method for exterior surfaces of earth-boring tools and the structure of acquisition |
| CN201184132Y (en) * | 2007-12-04 | 2009-01-21 | 西南石油大学 | Polycrystalline diamond composite sheet |
| CN201546625U (en) * | 2009-11-09 | 2010-08-11 | 成都迪普金刚石钻头有限责任公司 | PDC drill bit for avoiding negative cutting angles of balling |
| CN102606081A (en) * | 2012-03-28 | 2012-07-25 | 吉林大学 | Efficient, abrasion-resistant and shock-resistant polycrystalline diamond compact |
| CN102661124A (en) * | 2012-04-20 | 2012-09-12 | 吉林大学 | Wear-resistant PDC (polycrystalline diamond compact) drill bit capable of efficiently reaming holes |
| CN102828696A (en) * | 2012-09-11 | 2012-12-19 | 吉林大学 | Iron-based diamond-impregnated bit for drilling in hard slipping foundation |
| CN104399992A (en) * | 2014-10-20 | 2015-03-11 | 四川川庆石油钻采科技有限公司 | Manufacturing method of double-cutting diamond impregnated insert |
| CN105756562A (en) * | 2016-04-15 | 2016-07-13 | 陕西太合科技有限公司 | Steel body PDC (Polycrystalline Diamond Compact) directional bit for directional drilling under coal mine |
| CN105840105A (en) * | 2016-06-15 | 2016-08-10 | 吉林大学 | PDC (Polycrystalline diamond compact)-impregnated segment hybrid self-adaptive drill bit |
Non-Patent Citations (1)
| Title |
|---|
| 坚硬致密弱研磨性地层孕镶金刚石钻头性能优化;王佳亮;张绍和;;煤田地质与勘探(第06期);第159-163页 * |
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