CN110280756A - Add the diamond engineering thin-walled drill and its preparation process of cubic boron nitride - Google Patents
Add the diamond engineering thin-walled drill and its preparation process of cubic boron nitride Download PDFInfo
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- CN110280756A CN110280756A CN201910635953.8A CN201910635953A CN110280756A CN 110280756 A CN110280756 A CN 110280756A CN 201910635953 A CN201910635953 A CN 201910635953A CN 110280756 A CN110280756 A CN 110280756A
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- diamond
- boron nitride
- cubic boron
- engineering thin
- powder
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- 239000010432 diamond Substances 0.000 title claims abstract description 111
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 110
- 229910052582 BN Inorganic materials 0.000 title claims abstract description 64
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 63
- 239000002184 metal Substances 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000005253 cladding Methods 0.000 claims abstract description 25
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 15
- 238000004026 adhesive bonding Methods 0.000 claims description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 239000000080 wetting agent Substances 0.000 claims description 7
- 239000003979 granulating agent Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000009417 prefabrication Methods 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 235000015110 jellies Nutrition 0.000 claims description 3
- 239000008274 jelly Substances 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 description 8
- 239000004568 cement Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 238000012805 post-processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B22F1/0003—
-
- 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
- B22F1/16—Metallic particles coated with a non-metal
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses a kind of diamond engineering thin-walled drills for adding cubic boron nitride, it is made of raw material components such as metal powder, diamond and cubic boron nitrides, wherein metal powder includes FeCu30 prealloy powder, CuSn15 prealloy powder, am1 alloy powder, cobalt powder, the addition of the cubic boron nitride, which is taken, is first coated diamond and cubic boron nitride with covering, then the mode with metal powder mixture.The diamond engineering thin-walled drill of acquisition not only has the performance advantages such as toughness is high, thermal stability is strong, wearability is good, also greatly improves the service life and drilling hardness, speed of diamond engineering thin-walled drill.Furthermore, the preparation process of diamond engineering thin-walled drill provided by the invention, compound material is formed using special cladding process cladding diamond and cubic boron nitride, mixed metal powder again, and treatment conditions are limited, and to guarantee the high-quality and high-performance of diamond engineering thin wall drill, the preparation process Portable safety, high production efficiency, at low cost, product quality is excellent and stablizes.
Description
Technical field
The present invention relates to diamond engineering thin-walled drill technical field more particularly to a kind of diamonds for adding cubic boron nitride
The preparation process of engineering thin wall drill and diamond core drill bit.
Background technique
Engineering thin wall drill is chiefly used in concrete sampling, building drilling burrows, when carrying out drilling concrete work, meeting
Because operation needs to carry out drilling to metal products such as reinforcing bars in concrete with drill bit, although carrying out adding water cooling in drilling process
But, but still it is not avoided that the high temperature generated by frictional heating.
Engineering thin wall drilling bit is mostly prepared by diamond at present, and diamond is mainly used for such as hard alloy, glass, pottery
The processing of the hard brittle materials such as porcelain, stone material, concrete, building materials, since diamond is the allotrope of carbon, diamond bit is in height
It is easily chemically reacted with the iron family element in steel under temperature, causes strong chemical abrasion, such as produced in drilling bar material
Raw high temperature can make diamond be carbonized, and cause tool bit abrasion fast, influence sharpness, cutting effect and service life.
Summary of the invention
To solve the shortcomings of the prior art, the present invention provides a kind of diamond engineering for adding cubic boron nitride is thin
Wall bores, and cutter head has toughness, thermal stability and the service life significantly improved.
To achieve the above object, the diamond engineering thin-walled drill of addition cubic boron nitride provided by the invention, including it is following
Mass parts raw material components:
92~98 parts of metal powder；
1.5~4.5 parts of diamond；
0.5~3.5 part of cubic boron nitride；
Wherein, metal powder includes following mass parts raw material components per hundred parts:
The addition of the cubic boron nitride, which is taken, is first wrapped up diamond and cubic boron nitride with covering, then with gold
Belong to powder mixture mode, the cladding process the following steps are included:
A1, it obtains covering: taking 1.5~3.0 parts of granulating agent (ws-180), 25~30 parts of cobalt powder, 32~38 parts of isopropanol,
It 32~45 parts of acetone, is stirred evenly under the conditions of 50~70 DEG C of temperature, obtains covering；
A2, gluing, pre-coated and drying and processing: the diamond cleaned up and cubic boron nitride are proportioned
It is even, gluing is then mixed and carried out with covering made from step a1, after gluing processing after by material be then added in cobalt powder into
Row pre-coated obtains cobalt powder and coats 10~50 μm of thickness, then dries；
The painting jelly that the gluing processing uses is granulating agent ws-180；
A3, cladding and reduction treatment: the pre-coated material after drying is coated again with covering in coating machine, is obtained
To cladding 100~500 μm of thickness, finally by after cladding diamond and cubic boron nitride carry out reduction treatment.
Diamond engineering thin-walled drill of the invention, by being modified to cutter head, the addition cube in cutter head material formula
The metal powder prepared by prealloy powder is compounded while boron nitride, and to give full play to the performance of cubic boron nitride, general cube
Boron nitride is wrapped by agent package with elder generation together with diamond, then feeds with the mode of metal powder mixture, exists to assign cutter head
Higher toughness under high temperature, and to the chemical stability of iron family element, significantly improve service performance and service life.
Cubic boron nitride, has very high hardness, thermal stability and chemical inertness, and hardness is only second to diamond, but heat
Stability is much higher than diamond, and is known as biggish chemical stability to Ferrious material member.By in diamond engineering thin-walled drill
Although cutter head material in be added cubic boron nitride it is helpful for cutter head toughness, chemical stability at high temperature, for
The hardness of cutter head, drilling can but be influenced, therefore addition of the present invention for cubic boron nitride, first to use specific cladding
Diamond and cubic boron nitride are bundled together by technique, then the mode of the metal powder mixture compounded with by prealloy powder, are made
Cubic boron nitride and diamond further generate synergistic effect between metal powder, obtain not only being remarkably improved at high temperature
Toughness, chemical stability, and the unaffected diamond engineering thin-walled drill enhanced instead in terms of drilling hardness, speed
Cutter head extends cutter head service life to improve cutter head service performance comprehensively.In addition, diamond and cubic boron nitride are carrying out
When package, gluing, pre-coated and drying and processing need to be first carried out, to reduce the cladding difficulty to diamond and cubic boron nitride, is come
Guarantee the package quality and thickness of diamond and cubic boron nitride；Reduction treatment is carried out after also cubic boron nitride is wrapped up, and is reinforced
Bond strength between cobalt powder and diamond and cubic boron nitride, and guarantee that cobalt powder is to diamond in cutter head subsequent processes
With the holding power of cubic boron nitride, to significantly improve the service performance and service life of cutter head.
As the restriction to above-mentioned technical proposal, the granularity of the metal powder is 100~400 mesh, the diamond
Granularity is 25~70 mesh, and the granularity of the cubic boron nitride is 25~70 mesh.
As the restriction to above-mentioned technical proposal, the FeCu30 prealloy powder, CuSn15 prealloy powder, am1 alloyed powder
Expect, the granularity of cobalt powder is 100~400 mesh.
As the restriction to above-mentioned technical proposal, the speed of agitator for preparing of the covering is 150~350 turns/min.
As the restriction to above-mentioned technical proposal, the reduction treatment condition is reduction temperature 800 under an atmosphere of hydrogen
~900 DEG C.
The granularity of metal powder, diamond and cubic boron nitride is further limited, the grain of each raw material component in metal powder
Degree, the reduction treatment condition of covering prepared after revolving speed, and cladding, to make the diamond engineering thin-walled drill performance obtained
It is more excellent.
Meanwhile the present invention also provides a kind of preparation processes of diamond engineering thin-walled for adding cubic boron nitride, including
Following steps:
A, coat: cladding process according to claim 1 prepares the package compound material of diamond and cubic boron nitride；
B, mixture: the package compound material of step a being mixed with metal powder, adds the wetting agent of 0.3~2g/kg,
It is formed in batch mixer and blendes together material；
C, cold pressing compacting, sintering: will blend together in material investment cold stamping die, obtains cold pressing green compact through cold pressing compacting, places into
It is sintered to obtain cutter head prefabrication in agglomerating plant；
D, it post-processes: will be welded on drilling rod after the processing of cutter head prefabrication, obtain diamond engineering thin-walled drill.
As the restriction to above scheme, every hundred mass parts of wetting agent include 39~45 parts of glycerol, zinc stearate 7~
12 parts, remaining be isopropanol.
As the restriction to above scheme, batch mixer described in step b uses three-dimensional material mixer, and the mixing condition is normal
Temperature, relative humidity 30% are hereinafter, 1~3h of incorporation time.
As the restriction to above scheme, cold pressing pressing conditions described in step c is in will in the 2s time in cold stamping die
Pressing pressure rises to 5t/cm by normal pressure2Pressure.
As the restriction to above scheme, sintering condition described in step c be in hot press in the 5min time by temperature
820~950 DEG C are risen to, this temperature 10min is then maintained, is subsequently reduced to room temperature.
Further limit effective composition of wetting agent during mixture, the type of batch mixer, mixing condition, cold pressing compacting item
Part and sintering condition, to obtain the more optimized diamond engineering thin-walled drill of performance, to be conducive to diamond engineering thin-walled drill
It uses.
The diamond engineering thin-walled drill of addition cubic boron nitride provided by the invention is wrapped by limiting during the preparation process
The condition of mixture sequence and cold pressing compacting, sintering and post-processing after wrapping up in compound material, cladding, to guarantee in diamond engineering
The performance of each raw material component can be combined effectively in the preparation process of thin-walled drill, promote the formation of preparation process cutter head overall performance,
It realizes the optimization to performances such as diamond core drill bit toughness, thermal stability, wearabilities, meets the diamond engineering of high performance requirements
Thin-walled drill.
In conclusion the diamond engineering thin-walled drill obtained using technical solution of the present invention, utilizes cubic boron nitride knot
Alloy hard rock compounds the metal powder prepared by prealloy powder, and is fed in a manner of first wrapping up mixture again, significantly improves knife
Toughness, chemical stability and the service performance and service life of head at high temperature.Diamond engineering thin-walled provided by the invention
The preparation process of brill using special cladding process cladding diamond and cubic boron nitride, and further limits mixture, cold pressing pressure
System, the treatment conditions of sintering, to guarantee the high-quality and high-performance of diamond engineering thin wall drill, the preparation process Portable safety,
High production efficiency, at low cost, product quality is excellent and stablizes.
Specific embodiment
Below in conjunction with embodiment, technical solution of the present invention is clearly and completely described, it is clear that described
Embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Embodiment one
The present embodiment is related to a kind of diamond engineering thin-walled drill and its preparation process for adding cubic boron nitride.
A kind of diamond engineering thin-walled drill, including following mass parts raw material components:
92~98 parts of metal powder, 1.5~4.5 parts of diamond, 0.5~3.5 part of cubic boron nitride；The metal powder
Granularity is 100~400 mesh, and the granularity of the diamond is 25~70 mesh, and the granularity of the cubic boron nitride is 25~70 mesh；
Wherein, metal powder includes following quality powder raw material component per hundred parts: 35~55 parts of FeCu30 prealloy powder,
20~30 parts of CuSn15 prealloy powder, 3~8 parts of am1 alloy powder, 13~27 parts of cobalt powder；The FeCu30 prealloy powder,
CuSn15 prealloy powder, am1 alloy powder, the granularity of cobalt powder are 100~400 mesh；
In each embodiment shown in raw material components table specific as follows:
In upper table the diamond engineering thin-walled drill of each embodiment prepare it is as follows:
A, it coats: preparing the package compound material of diamond and cubic boron nitride by following cladding process；
A1, it obtains covering: taking granulating agent ws-1801.5~3.0 part, 25~30 parts of cobalt powder, 32~38 parts of isopropanol, third
It 32~45 parts of ketone, is stirred evenly under the conditions of 150~350 turns 50~70 DEG C of temperature, speed of agitator/min, obtains covering；
A2, gluing, pre-coated and drying and processing: the diamond cleaned up and cubic boron nitride are proportioned
It is even, gluing is then mixed and carried out with covering made from step a1, after gluing processing after by material be then added in cobalt powder into
Row pre-coated obtains cobalt powder and coats 10~50 μm of thickness, then dries；
The painting jelly that the gluing processing uses is granulating agent ws-180；
A3, cladding and reduction treatment: the pre-coated material after drying is coated again with covering in coating machine, is obtained
To cladding 100~500 μm of thickness, finally by after cladding diamond and cubic boron nitride under an atmosphere of hydrogen, reduction temperature is
Reduction treatment is carried out under conditions of 800~900 DEG C；
B, mixture: the package compound material of step a is mixed with metal powder, the wetting agent of 0.3~2g/kg is added, adopts
With three-dimensional material mixer, material is blended together hereinafter, being formed in 1~3h of incorporation time in room temperature, relative humidity 30%；
Every hundred mass parts of wetting agent include 39~45 parts of glycerol, 7~12 parts of zinc stearate, remaining be isopropanol；
C, cold pressing compacting, sintering: it will blend together in material investment cold stamping die, rise to pressing pressure by normal pressure in the 2s time
5t/cm2Pressure, through cold pressing compacting obtain cold pressing green compact, place into agglomerating plant and be sintered, will be hot in the 5min time
Temperature in press rises to 820~950 DEG C, then maintains this temperature 10min, is subsequently reduced to room temperature, so that it is prefabricated to obtain cutter head
Product；
D, it post-processes: will be welded on drilling rod after the processing of cutter head prefabrication, obtain diamond engineering thin-walled drill.
Auxiliary material and dosage that the preparation process of the various embodiments described above is related to, technological parameter are as shown in the table:
Embodiment two
The present embodiment is related to the using effect of diamond engineering thin-walled drill.
The performance of diamond engineering thin-walled drill prepared by embodiment 1.1~1.4 is tested, using effect is tested such as
Under:
The diamond engineering thin wall drilling bit that embodiment 1.1 obtains, sample specification are as follows: φ 76-380, wherein cutter head height
10mm, cutter head is with a thickness of 3.6mm.It is obtained using test drilling block (standard c40 cement, thickness 240mm, 4 32mm reinforcing bars)
Diamond engineering thin-walled drill is tested, and drilling speed can reach the hole 6min/, and service life is up to 40 holes.
The diamond engineering thin wall drilling bit that embodiment 1.2 obtains, sample specification are as follows: φ 76-380, wherein cutter head height
10mm, cutter head is with a thickness of 3.6mm.It is obtained using test drilling block (standard c40 cement, thickness 240mm, 4 32mm reinforcing bars)
Diamond engineering thin-walled drill is tested, and drilling speed can reach the hole 5.6min/, and service life is up to 36 holes.
The diamond engineering thin wall drilling bit that embodiment 1.3 obtains, sample specification are as follows: φ 76-380, wherein cutter head height
10mm, cutter head is with a thickness of 3.6mm.It is obtained using test drilling block (standard c40 cement, thickness 240mm, 4 32mm reinforcing bars)
Diamond engineering thin-walled drill is tested, and drilling speed can reach the hole 5.2min/, and service life is up to 33 holes.
The diamond engineering thin wall drilling bit that embodiment 1.4 obtains, sample specification are as follows: φ 76-380, wherein cutter head height
10mm, cutter head is with a thickness of 3.6mm.It is obtained using test drilling block (standard c40 cement, thickness 240mm, 4 32mm reinforcing bars)
Diamond engineering thin-walled drill is tested, and drilling speed can reach the hole 5min/, and service life is up to 31 holes.
Comparative example one
This comparative example is related to influence of the cubic boron nitride to diamond engineering thin-walled drill.
One diamond engineering thin-walled drill, raw material components include metal powder 1000g (i.e. FeCu30 prealloy powder 370g,
CuSn15 prealloy powder 300g, am1 metal powder 80g, cobalt powder 250g), diamond 250ct；By the diamond in raw material components
It after first being wrapped up, remixes by the metal powder of prealloy powder compounding preparation, then successively carries out mixture, cold pressing compacting, burns
Knot and post-processing.
The above-mentioned diamond engineering thin-walled drill being prepared is tested for the property, sample specification are as follows: φ 76-380, wherein
Cutter head height 10mm, cutter head is with a thickness of 3.6mm.It is right using test drilling block (standard c40 cement, thickness 240mm, 4 32mm reinforcing bars)
Its obtained diamond engineering thin-walled drill is tested, and drilling speed can reach the hole 10min/, and service life is up to 25 holes.
Comparative example two
This comparative example is related to influence of the metal powder to diamond engineering thin-walled drill.
One diamond engineering thin-walled drill, raw material components include metal powder 1000g (i.e. Fe powder 280g, Cu powder 300g, Sn
Powder 90g, cobalt powder 250g, am1 metal powder 80g), cubic boron nitride 40ct, diamond 210ct；By cube in raw material components
Boron nitride and diamond first carry out cladding processing, remix the metal powder prepared by common metal powder, are then successively mixed
Match, be cold-pressed compacting, sintering and post-processing.
The above-mentioned diamond engineering thin-walled drill being prepared is tested for the property, sample specification are as follows: φ 76-380, wherein
Cutter head height 10mm, cutter head is with a thickness of 3.6mm.It is right using test drilling block (standard c40 cement, thickness 240mm, 4 32mm reinforcing bars)
Its obtained diamond engineering thin-walled drill is tested, and drilling speed can reach the hole 8.9min/, and service life is up to 27 holes.
Comparative example three
This comparative example is related to influence of the cladding process to diamond engineering thin-walled drill.
One diamond engineering thin-walled drill, raw material components include metal powder 1000g (i.e. FeCu30 prealloy powder 370g,
CuSn15 prealloy powder 300g, am1 metal powder 80g, cobalt powder 250g), cubic boron nitride 40ct, diamond 210ct；By raw material
Diamond and cubic boron nitride in component first carry out mixture, remix by the metal powder of prealloy powder compounding preparation, then
Successively carry out mixture, cold pressing compacting, sintering and post-processing.
The above-mentioned diamond engineering thin-walled drill being prepared is tested for the property, sample specification are as follows: φ 76-380, wherein
Cutter head height 10mm, cutter head is with a thickness of 3.6mm.It is right using test drilling block (standard c40 cement, thickness 240mm, 4 32mm reinforcing bars)
Its obtained diamond engineering thin-walled drill is tested, and drilling speed can reach the hole 13min/, and service life is up to 20 holes.
In conclusion diamond engineering thin wall drilling bit of the invention, in terms of raw material components and cladding process two simultaneously into
Row optimization, makes the diamond engineering thin-walled drill obtained have the performance advantages such as extremely excellent toughness, thermal stability, wearability,
To improve the service life of diamond engineering thin-walled drill, production cost is reduced, and improve diamond engineering thin-walled drill
Drilling speed.
Claims (10)
1. a kind of diamond engineering thin-walled drill for adding cubic boron nitride, which is characterized in that including following mass parts raw material components:
92~98 parts of metal powder；
1.5~4.5 parts of diamond；
0.5~3.5 part of cubic boron nitride；
Wherein, metal powder includes following mass parts raw material components per hundred parts:
The addition of the cubic boron nitride, which is taken, is first wrapped up diamond and cubic boron nitride with covering, then with metal powder
The mode of last mixture, the cladding process the following steps are included:
A1, it obtains covering: taking 1.5~3.0 parts of granulating agent ws-180,25~30 parts of cobalt powder, 32~38 parts of isopropanol, acetone
It 32~45 parts, is stirred evenly under the conditions of 50~70 DEG C of temperature, obtains covering；
A2, gluing, pre-coated and drying and processing: by the diamond cleaned up and cubic boron nitride grinding human bone ash, so
Gluing is mixed and carried out with covering made from step a1 afterwards, material is then added in cobalt powder after gluing processing and is wrapped in advance
It covers, obtains cobalt powder and coat 10~50 μm of thickness, then dry；
The painting jelly that the gluing processing uses is granulating agent ws-180；
A3, cladding and reduction treatment: the pre-coated material after drying is coated again with covering in coating machine, is wrapped
Cover 100~500 μm of thickness, finally by after cladding diamond and cubic boron nitride carry out reduction treatment.
2. the diamond engineering thin-walled drill of addition cubic boron nitride according to claim 1, it is characterised in that: the metal
The granularity of powder is 100~400 mesh, and the granularity of the diamond is 25~70 mesh, the granularity of the cubic boron nitride is 25~
70 mesh.
3. the diamond engineering thin-walled drill of addition cubic boron nitride according to claim 2, it is characterised in that: described
FeCu30 prealloy powder, CuSn15 prealloy powder, am1 alloy powder, the granularity of cobalt powder are 100~400 mesh.
4. the diamond engineering thin-walled drill of addition cubic boron nitride according to claim 1, it is characterised in that: the cladding
The speed of agitator for preparing of agent is 150~350 turns/min.
5. the diamond engineering thin-walled drill of addition cubic boron nitride according to claim 1, it is characterised in that: the reduction
Treatment conditions are that under an atmosphere of hydrogen, reduction temperature is 800~900 DEG C.
6. a kind of preparation process of the diamond engineering thin-walled drill of addition cubic boron nitride as described in claim 1, feature
It is: the following steps are included:
A, coat: cladding process according to claim 1 prepares the package compound material of diamond and cubic boron nitride；
B, mixture: the package compound material of step a is mixed with metal powder, the wetting agent of 0.3~2g/kg is added, in mixing
It is formed in machine and blendes together material；
C, cold pressing compacting, sintering: will blend together in material investment cold stamping die, obtains cold pressing green compact through cold pressing compacting, places into sintering
It is sintered to obtain cutter head prefabrication in equipment；
D, it post-processes: will be welded on drilling rod after the processing of cutter head prefabrication, obtain diamond engineering thin-walled drill.
7. the preparation process of the diamond engineering thin-walled drill of addition cubic boron nitride according to claim 6, feature exist
In: every hundred mass parts of wetting agent include 39~45 parts of glycerol, 7~12 parts of zinc stearate, remaining be isopropanol.
8. the preparation process of the diamond engineering thin-walled drill of addition cubic boron nitride according to claim 6, feature exist
In: batch mixer described in step b uses three-dimensional material mixer, and the mixing condition is in room temperature, relative humidity 30% hereinafter, when mixing
Between 1~3h.
9. the preparation process of the diamond engineering thin-walled drill of addition cubic boron nitride according to claim 6, feature exist
In: cold pressing pressing conditions described in step c is in pressing pressure is risen to 5t/cm by normal pressure in the 2s time in cold stamping die2's
Pressure.
10. the preparation process of the diamond engineering thin-walled drill of addition cubic boron nitride according to claim 6, feature exist
In: sintering condition described in step c is then to maintain this temperature in temperature is risen to 820~950 DEG C in the 5min time in hot press
10min is spent, room temperature is subsequently reduced to.
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