CN110280756B - Diamond engineering thin-wall drill added with cubic boron nitride and preparation process thereof - Google Patents
Diamond engineering thin-wall drill added with cubic boron nitride and preparation process thereof Download PDFInfo
- Publication number
- CN110280756B CN110280756B CN201910635953.8A CN201910635953A CN110280756B CN 110280756 B CN110280756 B CN 110280756B CN 201910635953 A CN201910635953 A CN 201910635953A CN 110280756 B CN110280756 B CN 110280756B
- Authority
- CN
- China
- Prior art keywords
- diamond
- boron nitride
- cubic boron
- coating
- wall drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 113
- 239000010432 diamond Substances 0.000 title claims abstract description 113
- 229910052582 BN Inorganic materials 0.000 title claims abstract description 67
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 64
- 239000011248 coating agent Substances 0.000 claims abstract description 57
- 238000000576 coating method Methods 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 38
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 23
- 239000000956 alloy Substances 0.000 claims abstract description 23
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 18
- 238000005245 sintering Methods 0.000 claims description 17
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- 238000004026 adhesive bonding Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003979 granulating agent Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000080 wetting agent Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 238000003466 welding 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
- 238000005553 drilling Methods 0.000 abstract description 14
- 229910001294 Reinforcing steel Inorganic materials 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
- 230000000694 effects Effects 0.000 description 6
- 239000004567 concrete Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 239000000919 ceramic Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Drilling Tools (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses a diamond engineering thin-wall drill added with cubic boron nitride, which is prepared from metal powder, diamond, cubic boron nitride and other raw material components, wherein the metal powder comprises FeCu30 pre-alloy powder, CuSn15 pre-alloy powder, am1 alloy powder and cobalt powder, and the cubic boron nitride is added in a manner that a coating agent is used for coating the diamond and the cubic boron nitride firstly and then the coating agent is mixed with the metal powder. The obtained diamond engineering thin-wall drill not only has the performance advantages of high toughness, strong thermal stability, good wear resistance and the like, but also greatly prolongs the service life, and drilling hardness and speed of the diamond engineering thin-wall drill. In addition, the preparation process of the diamond engineering thin-wall drill provided by the invention adopts a special coating process to coat diamond and cubic boron nitride to form a composite material, then mixes metal powder, and limits treatment conditions to ensure high quality and high performance of the diamond engineering thin-wall drill.
Description
Technical Field
The invention relates to the technical field of diamond engineering thin-wall drills, in particular to a diamond engineering thin-wall drill added with cubic boron nitride and a preparation process of the diamond thin-wall drill.
Background
Engineering thin wall bores and is used for concrete sample, building drilling and holing etc. mostly, when carrying out the drilling concrete work, can be because of the operation need drill the metal product such as reinforcing bar in to the concrete with the drill bit, though adding water cooling in the drilling process, still can not avoid the high temperature that produces because of friction generates heat.
At present, engineering thin-wall drill bits are mostly prepared from diamond materials, the diamond is mainly used for processing hard and brittle materials such as hard alloy, glass, ceramics, stone, concrete, building materials and the like, and the diamond is an allotrope of carbon, so the diamond drill bit is easy to react with iron group elements in steel at high temperature to cause strong chemical wear, and the diamond can be carbonized at high temperature generated when a reinforcing steel bar material is drilled, so that the tool bit is worn quickly, and the sharpness, the cutting effect and the service life are influenced.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the diamond engineering thin-wall drill added with the cubic boron nitride, and the tool bit of the diamond engineering thin-wall drill has obviously improved toughness and thermal stability and prolonged service life.
In order to achieve the aim, the diamond engineering thin-wall drill added with the cubic boron nitride provided by the invention comprises the following raw material components in parts by mass:
92-98 parts of metal powder;
1.5-4.5 parts of diamond;
0.5-3.5 parts of cubic boron nitride;
wherein, each hundred parts of metal powder comprises the following raw material components in parts by mass:
the addition of the cubic boron nitride adopts a mode that a coating agent wraps diamond and the cubic boron nitride firstly, and then the coating agent is mixed with metal powder, and the coating process comprises the following steps:
a1, obtaining a coating agent: taking 1.5-3.0 parts of granulating agent (ws-180), 25-30 parts of cobalt powder, 32-38 parts of isopropanol and 32-45 parts of acetone, and uniformly stirring at 50-70 ℃ to obtain a coating agent;
a2, gluing, pre-coating and drying: uniformly mixing the cleaned diamond and cubic boron nitride in proportion, then mixing the mixture with the coating agent prepared in the step a1, gluing, adding the material into cobalt powder for pre-coating after gluing treatment to obtain the cobalt powder coating thickness of 10-50 mu m, and then drying;
the coating agent used in the coating treatment is granulating agent ws-180;
a3, coating and reducing treatment: and coating the dried pre-coated material with a coating agent in a coating machine to obtain a coating thickness of 100-500 mu m, and finally reducing the coated diamond and the cubic boron nitride.
According to the diamond engineering thin-wall drill, the tool bit is modified, the cubic boron nitride is added in the tool bit material formula, the metal powder prepared from the pre-alloyed powder is compounded, and in order to give full play to the performance of the cubic boron nitride, the cubic boron nitride is wrapped by the coating agent together with the diamond and then is mixed with the metal powder for feeding, so that the tool bit is endowed with higher toughness at high temperature, the chemical stability of iron group elements is improved, the service performance is obviously improved, and the service life is prolonged.
Cubic boron nitride has high hardness, thermal stability and chemical inertness, the hardness of the cubic boron nitride is second to that of diamond, but the thermal stability of the cubic boron nitride is far higher than that of diamond, and the cubic boron nitride has larger chemical stability to iron series metal elements. The addition of the cubic boron nitride is helpful for the toughness and the chemical stability of the tool bit at high temperature, but influences the hardness and the drilling performance of the tool bit, so that the addition of the cubic boron nitride enables the cubic boron nitride and the diamond to generate synergistic action with the metal powder by adopting a specific coating process to coat the diamond and the cubic boron nitride together and then mixing the coated diamond and the metal powder compounded by the pre-alloy powder, thereby obtaining the diamond engineering thin-wall drill tool bit which can obviously improve the toughness and the chemical stability at high temperature and is not influenced to the aspects of drilling hardness and speed, further comprehensively improving the service performance of the tool bit and prolonging the service life of the tool bit. In addition, when the diamond and the cubic boron nitride are wrapped, gluing, pre-wrapping and drying treatment are required to be carried out firstly, so that the wrapping difficulty of the diamond and the cubic boron nitride is reduced, and the wrapping quality and thickness of the diamond and the cubic boron nitride are ensured; the cubic boron nitride is also subjected to reduction treatment after being wrapped, so that the bonding strength between the cobalt powder and the diamond and the cubic boron nitride is enhanced, and the holding force of the cobalt powder on the diamond and the cubic boron nitride in the subsequent treatment process of the tool bit is ensured, thereby obviously improving the service performance and prolonging the service life of the tool bit.
As a limitation on the technical scheme, the granularity of the metal powder is 100-400 meshes, the granularity of the diamond is 25-70 meshes, and the granularity of the cubic boron nitride is 25-70 meshes.
As a limitation to the technical scheme, the particle sizes of the FeCu30 pre-alloy powder, the CuSn15 pre-alloy powder, the am1 alloy powder and the cobalt powder are all 100-400 meshes.
As a limitation on the technical scheme, the preparation stirring speed of the coating agent is 150-350 r/min.
As a limitation to the technical scheme, the reduction treatment condition is that the reduction temperature is 800-900 ℃ in a hydrogen atmosphere.
Further limiting the granularity of the metal powder, the diamond and the cubic boron nitride, the granularity of each raw material component in the metal powder, the preparation rotating speed of the coating agent and the reduction treatment condition after coating, so that the obtained diamond engineering thin-wall drill has better performance.
Meanwhile, the invention also provides a preparation process of the diamond engineering thin wall added with the cubic boron nitride, which comprises the following steps:
a. coating: the coating process of claim 1, preparing a coating composite of diamond and cubic boron nitride;
b. mixing: mixing the wrapped composite material obtained in the step a with metal powder, adding 0.3-2 g/kg of wetting agent, and forming a mixed material in a mixer;
c. cold pressing and sintering: putting the mixed material into a cold pressing die, performing cold pressing to obtain a cold pressing compact, and sintering in a sintering device to obtain a tool bit prefabricated product;
d. and (3) post-treatment: and processing the tool bit prefabricated product and welding the processed tool bit prefabricated product on a drill rod to obtain the diamond engineering thin-wall drill.
The humectant comprises, by mass, 39-45 parts of glycerin, 7-12 parts of zinc stearate and the balance of isopropanol.
And b, as a limitation on the scheme, the mixer in the step b adopts a three-dimensional mixer, the mixing conditions are that the mixing time is 1-3 h at normal temperature and the relative humidity is below 30%.
As a limitation to the above scheme, the cold pressing conditions in the step c are that the pressing pressure is increased from normal pressure to 5t/cm in the cold pressing die within 2s2The pressure of (a).
As a limitation to the above scheme, the sintering conditions in step c are that the temperature is increased to 820-950 ℃ in a hot press within 5min, then the temperature is maintained for 10min, and then the temperature is reduced to room temperature.
Further limiting the effective composition of the wetting agent in the mixing process, the type of a mixer, the mixing condition, the cold pressing condition and the sintering condition to obtain the diamond engineering thin-wall drill with more optimized performance, thereby being beneficial to the use of the diamond engineering thin-wall drill.
According to the diamond engineering thin-wall drill added with the cubic boron nitride, provided by the invention, in the preparation process, the properties of the raw material components can be effectively combined in the preparation process of the diamond engineering thin-wall drill by limiting the mixing sequence of the wrapping composite material and the wrapping material and the conditions of cold pressing, sintering and post-treatment, so that the formation of the overall performance of a cutter head in the preparation process is promoted, the optimization of the properties such as toughness, thermal stability and wear resistance of the diamond thin-wall drill is realized, and the high-performance requirement of the diamond engineering thin-wall drill is met.
In conclusion, the diamond engineering thin-wall drill obtained by the technical scheme of the invention utilizes the cubic boron nitride and the diamond to compound the metal powder prepared by the pre-alloyed powder, and the metal powder is added in a manner of wrapping firstly and then mixing, so that the toughness and the chemical stability of the tool bit at high temperature, the service performance and the service life are obviously improved. According to the preparation process of the diamond engineering thin-wall drill, the diamond and the cubic boron nitride are coated by adopting a special coating process, and the processing conditions of mixing, cold pressing and sintering are further limited, so that the high quality and the high performance of the diamond engineering thin-wall drill are ensured.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The embodiment relates to a diamond engineering thin-wall drill added with cubic boron nitride and a preparation process thereof.
A diamond engineering thin-wall drill comprises the following raw material components in parts by mass:
92-98 parts of metal powder, 1.5-4.5 parts of diamond and 0.5-3.5 parts of cubic boron nitride; the particle size of the metal powder is 100-400 meshes, the particle size of the diamond is 25-70 meshes, and the particle size of the cubic boron nitride is 25-70 meshes;
wherein, each hundred parts of metal powder comprises the following raw material components in parts by mass: 35-55 parts of FeCu30 pre-alloy powder, 20-30 parts of CuSn15 pre-alloy powder, 3-8 parts of am1 alloy powder and 13-27 parts of cobalt powder; the particle sizes of the FeCu30 pre-alloy powder, the CuSn15 pre-alloy powder, the am1 alloy powder and the cobalt powder are all 100-400 meshes;
the raw material components in each example are specifically shown in the following table:
the diamond engineered bur of each example in the table above was prepared as follows:
a. coating: preparing a diamond and cubic boron nitride wrapping composite material according to the following wrapping process;
a1, obtaining a coating agent: uniformly stirring granulating agents ws-1801.5-3.0 parts, cobalt powder 25-30 parts, isopropanol 32-38 parts and acetone 32-45 parts at the temperature of 50-70 ℃ and the stirring speed of 150-350 r/min to obtain a coating agent;
a2, gluing, pre-coating and drying: uniformly mixing the cleaned diamond and cubic boron nitride in proportion, then mixing the mixture with the coating agent prepared in the step a1, gluing, adding the material into cobalt powder for pre-coating after gluing treatment to obtain the cobalt powder coating thickness of 10-50 mu m, and then drying;
the coating agent used in the coating treatment is granulating agent ws-180;
a3, coating and reducing treatment: coating the dried pre-coated material with a coating agent in a coating machine to obtain a coating thickness of 100-500 mu m, and finally reducing the coated diamond and cubic boron nitride in a hydrogen atmosphere at a reduction temperature of 800-900 ℃;
b. mixing: mixing the coated composite material obtained in the step a with metal powder, adding 0.3-2 g/kg of wetting agent, and forming a mixed material by adopting a three-dimensional mixer at normal temperature and with relative humidity below 30% for 1-3 h;
the wetting agent comprises 39-45 parts of glycerin, 7-12 parts of zinc stearate and the balance of isopropanol in parts by mass;
c. cold pressing and sintering: putting the mixed material into a cold pressing die, and increasing the pressing pressure from normal pressure to 5t/cm within 2s2The pressure is obtained by cold pressing to obtain a cold-pressed compact, then the cold-pressed compact is placed into sintering equipment for sintering, the temperature in a hot press is increased to 820-950 ℃ within 5min, then the temperature is maintained for 10min, and then the temperature is reduced to room temperature, so that a tool bit prefabricated product is obtained;
d. and (3) post-treatment: and processing the tool bit prefabricated product and welding the processed tool bit prefabricated product on a drill rod to obtain the diamond engineering thin-wall drill.
The preparation process of the above embodiments includes the following auxiliary materials, amounts and process parameters:
example two
The embodiment relates to the use effect of a diamond engineering thin-wall drill.
The performance of the diamond engineering thin-wall drill prepared in the embodiment 1.1-1.4 is tested, and the using effect is tested as follows:
the diamond engineered thin wall drill bit obtained in example 1.1, sample specifications were: phi 76-380, wherein the height of the cutter head is 10mm and the thickness of the cutter head is 3.6 mm. The diamond engineering thin-wall drill obtained by the method is tested by adopting a test drill block (standard c40 cement, the thickness of 240mm and 4 reinforcing steel bars of 32 mm), the drilling speed can reach 6 min/hole, and the service life can reach 40 holes.
The diamond engineering thin wall drill bit obtained in example 1.2 has the following sample specifications: phi 76-380, wherein the height of the cutter head is 10mm and the thickness of the cutter head is 3.6 mm. The diamond engineering thin-wall drill obtained by the method is tested by adopting a test drill block (standard c40 cement, the thickness of 240mm and 4 reinforcing steel bars of 32 mm), the drilling speed can reach 5.6 min/hole, and the service life can reach 36 holes.
The diamond engineering thin wall drill bit obtained in example 1.3, the sample specification is: phi 76-380, wherein the height of the cutter head is 10mm and the thickness of the cutter head is 3.6 mm. The diamond engineering thin-wall drill obtained by the method is tested by adopting a test drill block (standard c40 cement, the thickness of 240mm and 4 reinforcing steel bars of 32 mm), the drilling speed can reach 5.2 min/hole, and the service life can reach 33 holes.
The diamond engineered thin wall drill bit obtained in example 1.4, sample specifications were: phi 76-380, wherein the height of the cutter head is 10mm and the thickness of the cutter head is 3.6 mm. The diamond engineering thin-wall drill obtained by the method is tested by adopting a test drill block (standard c40 cement, the thickness of 240mm and 4 reinforcing steel bars of 32 mm), the drilling speed can reach 5 min/hole, and the service life can reach 31 holes.
Comparative example 1
This comparative example relates to the effect of cubic boron nitride on diamond engineered thin wall drills.
The diamond engineering thin-wall drill comprises the following raw material components of 1000g of metal powder (namely 370g of FeCu30 pre-alloy powder, 300g of CuSn15 pre-alloy powder, 80g of am1 metal powder and 250g of cobalt powder) and 250ct of diamond; the diamond in the raw material components is firstly wrapped, then the metal powder prepared by compounding the pre-alloy powder is mixed, and then the steps of mixing, cold pressing, sintering and post-treatment are sequentially carried out.
The diamond engineering thin-wall drill prepared by the method is subjected to performance test, and the specification of a sample is as follows: phi 76-380, wherein the height of the cutter head is 10mm and the thickness of the cutter head is 3.6 mm. The diamond engineering thin-wall drill obtained by the method is tested by adopting a test drill block (standard c40 cement, the thickness of 240mm and 4 reinforcing steel bars of 32 mm), the drilling speed can reach 10 min/hole, and the service life can reach 25 holes.
Comparative example No. two
This comparative example relates to the effect of metal powder on diamond engineered wall drills.
The diamond engineering thin-wall drill comprises the following raw material components of 1000g of metal powder (namely 280g of Fe powder, 300g of Cu powder, 90g of Sn powder, 250g of cobalt powder and 80g of am1 metal powder), 40ct of cubic boron nitride and 210ct of diamond; the cubic boron nitride and the diamond in the raw material components are firstly subjected to coating treatment, then metal powder prepared from common metal powder is mixed, and then mixing, cold pressing, sintering and post-treatment are sequentially carried out.
The diamond engineering thin-wall drill prepared by the method is subjected to performance test, and the specification of a sample is as follows: phi 76-380, wherein the height of the cutter head is 10mm and the thickness of the cutter head is 3.6 mm. The diamond engineering thin-wall drill obtained by the method is tested by adopting a test drill block (standard c40 cement, the thickness of 240mm and 4 reinforcing steel bars of 32 mm), the drilling speed can reach 8.9 min/hole, and the service life can reach 27 holes.
Comparative example No. three
This comparative example relates to the effect of the cladding process on diamond engineered thin wall drills.
The diamond engineering thin-wall drill comprises the following raw material components of 1000g of metal powder (namely 370g of FeCu30 pre-alloy powder, 300g of CuSn15 pre-alloy powder, 80g of am1 metal powder and 250g of cobalt powder), 40ct of cubic boron nitride and 210ct of diamond; the diamond and the cubic boron nitride in the raw material components are mixed firstly, then the metal powder prepared by compounding the pre-alloy powder is mixed, and then the mixing, the cold pressing, the sintering and the post-treatment are carried out in sequence.
The diamond engineering thin-wall drill prepared by the method is subjected to performance test, and the specification of a sample is as follows: phi 76-380, wherein the height of the cutter head is 10mm and the thickness of the cutter head is 3.6 mm. The diamond engineering thin-wall drill obtained by the method is tested by adopting a test drill block (standard c40 cement, the thickness of 240mm and 4 reinforcing steel bars of 32 mm), the drilling speed can reach 13 min/hole, and the service life can reach 20 holes.
In conclusion, the diamond engineering thin-wall drill bit disclosed by the invention is optimized from two aspects of raw material components and a coating process at the same time, so that the obtained diamond engineering thin-wall drill has the performance advantages of extremely excellent toughness, thermal stability, wear resistance and the like, the service life of the diamond engineering thin-wall drill is prolonged, the production cost is reduced, and the drilling speed of the diamond engineering thin-wall drill is increased.
Claims (10)
1. The diamond engineering thin-wall drill added with the cubic boron nitride is characterized by comprising the following raw material components in parts by mass:
92-98 parts of metal powder;
1.5-4.5 parts of diamond;
0.5-3.5 parts of cubic boron nitride;
wherein, each hundred parts of metal powder comprises the following raw material components in parts by mass:
the addition of the cubic boron nitride adopts a mode that a coating agent wraps diamond and the cubic boron nitride firstly, and then the coating agent is mixed with metal powder, and the coating process comprises the following steps:
a1, obtaining a coating agent: uniformly stirring granulating agents ws-1801.5-3.0 parts, cobalt powder 25-30 parts, isopropanol 32-38 parts and acetone 32-45 parts at the temperature of 50-70 ℃ to obtain a coating agent;
a2, gluing, pre-coating and drying: uniformly mixing the cleaned diamond and cubic boron nitride in proportion, then mixing the mixture with the coating agent prepared in the step a1, gluing, adding the material into cobalt powder for pre-coating after gluing treatment to obtain the cobalt powder coating thickness of 10-50 mu m, and then drying;
the coating agent used in the coating treatment is granulating agent ws-180;
a3, coating and reducing treatment: and coating the dried pre-coated material with a coating agent in a coating machine to obtain a coating thickness of 100-500 mu m, and finally reducing the coated diamond and the cubic boron nitride.
2. The cubic boron nitride added diamond engineering thin-wall drill according to claim 1, characterized in that: the particle size of the metal powder is 100-400 meshes, the particle size of the diamond is 25-70 meshes, and the particle size of the cubic boron nitride is 25-70 meshes.
3. The cubic boron nitride added diamond engineering thin-wall drill according to claim 2, characterized in that: the particle sizes of the FeCu30 pre-alloy powder, the CuSn15 pre-alloy powder, the am1 alloy powder and the cobalt powder are all 100-400 meshes.
4. The cubic boron nitride added diamond engineering thin-wall drill according to claim 1, characterized in that: the preparation stirring speed of the coating agent is 150-350 r/min.
5. The cubic boron nitride added diamond engineering thin-wall drill according to claim 1, characterized in that: the reduction treatment condition is that the reduction temperature is 800-900 ℃ in a hydrogen atmosphere.
6. The preparation process of the diamond engineering thin-wall drill added with the cubic boron nitride according to claim 1, which is characterized in that: the method comprises the following steps:
a. coating: the coating process of claim 1, preparing a coating composite of diamond and cubic boron nitride;
b. mixing: mixing the wrapped composite material obtained in the step a with metal powder, adding 0.3-2 g/kg of wetting agent, and forming a mixed material in a mixer;
c. cold pressing and sintering: putting the mixed material into a cold pressing die, performing cold pressing to obtain a cold pressing compact, and sintering in a sintering device to obtain a tool bit prefabricated product;
d. and (3) post-treatment: and processing the tool bit prefabricated product and welding the processed tool bit prefabricated product on a drill rod to obtain the diamond engineering thin-wall drill.
7. The process for preparing the diamond engineering thin-wall drill added with the cubic boron nitride according to claim 6, wherein the process comprises the following steps: the wetting agent comprises 39-45 parts of glycerin, 7-12 parts of zinc stearate and the balance of isopropanol in parts by mass.
8. The process for preparing the diamond engineering thin-wall drill added with the cubic boron nitride according to claim 6, wherein the process comprises the following steps: and b, adopting a three-dimensional mixer as the mixer, wherein the mixing condition is that the mixing time is 1-3 h at normal temperature and relative humidity below 30%.
9. The process for preparing the diamond engineering thin-wall drill added with the cubic boron nitride according to claim 6, wherein the process comprises the following steps: the cold pressing condition of the step c is that the pressing pressure is increased from normal pressure to 5t/cm within 2s of the cold pressing die2The pressure of (a).
10. The process for preparing the diamond engineering thin-wall drill added with the cubic boron nitride according to claim 6, wherein the process comprises the following steps: and c, under the sintering condition, the temperature is increased to 820-950 ℃ within 5min in a hot press, then the temperature is maintained for 10min, and then the temperature is reduced to the room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635953.8A CN110280756B (en) | 2019-07-15 | 2019-07-15 | Diamond engineering thin-wall drill added with cubic boron nitride and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635953.8A CN110280756B (en) | 2019-07-15 | 2019-07-15 | Diamond engineering thin-wall drill added with cubic boron nitride and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110280756A CN110280756A (en) | 2019-09-27 |
| CN110280756B true CN110280756B (en) | 2021-07-06 |
Family
ID=68022869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910635953.8A Active CN110280756B (en) | 2019-07-15 | 2019-07-15 | Diamond engineering thin-wall drill added with cubic boron nitride and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110280756B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1646267A (en) * | 2002-04-11 | 2005-07-27 | 昭和电工株式会社 | Metal-coated abrasives, grinding wheel using metal-coated abrasives and method of producing metal-coated abrasives |
| CN103100977A (en) * | 2013-01-29 | 2013-05-15 | 中国地质大学（北京） | Preparation method of high-strength diamond grinding wheel dressing pen |
| CN105624505A (en) * | 2015-12-25 | 2016-06-01 | 富耐克超硬材料股份有限公司 | Metal based superhard composite and preparation method thereof |
| CN107815580A (en) * | 2017-11-08 | 2018-03-20 | 吉林大学 | A kind of polycrystalline cubic boron nitride/diamond composite and preparation method thereof |
| CN109128145A (en) * | 2018-11-02 | 2019-01-04 | 石家庄海川工具有限公司 | A kind of preparation method of diamond engineering thin-walled drill cutter head powdered metallurgical material and cutter head |
| CN109175379A (en) * | 2018-11-02 | 2019-01-11 | 石家庄海川工具有限公司 | A kind of diamond saw blade and preparation method thereof |
-
2019
- 2019-07-15 CN CN201910635953.8A patent/CN110280756B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1646267A (en) * | 2002-04-11 | 2005-07-27 | 昭和电工株式会社 | Metal-coated abrasives, grinding wheel using metal-coated abrasives and method of producing metal-coated abrasives |
| CN103100977A (en) * | 2013-01-29 | 2013-05-15 | 中国地质大学（北京） | Preparation method of high-strength diamond grinding wheel dressing pen |
| CN105624505A (en) * | 2015-12-25 | 2016-06-01 | 富耐克超硬材料股份有限公司 | Metal based superhard composite and preparation method thereof |
| CN107815580A (en) * | 2017-11-08 | 2018-03-20 | 吉林大学 | A kind of polycrystalline cubic boron nitride/diamond composite and preparation method thereof |
| CN109128145A (en) * | 2018-11-02 | 2019-01-04 | 石家庄海川工具有限公司 | A kind of preparation method of diamond engineering thin-walled drill cutter head powdered metallurgical material and cutter head |
| CN109175379A (en) * | 2018-11-02 | 2019-01-11 | 石家庄海川工具有限公司 | A kind of diamond saw blade and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110280756A (en) | 2019-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101918603B (en) | Diamond metal composite | |
| US10259751B2 (en) | Tungsten carbide-cubic boron nitride composite material and preparation method thereof | |
| CN101397614A (en) | Method for preparing Ni cementing WC base cemented carbide | |
| CN102383019A (en) | Superfine crystalline Ti(C,N)-based cermet and preparation method thereof | |
| US20230313348A1 (en) | Method for preparing diamond tool bit from pure iron-based matrix | |
| CN110280756B (en) | Diamond engineering thin-wall drill added with cubic boron nitride and preparation process thereof | |
| CN101265531A (en) | Production method of cemented carbide with multiple groups of different components | |
| JP5217417B2 (en) | Titanium carbonitride-based cermet cutting tool with excellent wear resistance | |
| CN111185591B (en) | TiC high manganese steel composite material and preparation method thereof | |
| CN110340347B (en) | Diamond wire saw bead added with cubic boron nitride and preparation process of diamond wire saw | |
| CN109456062B (en) | A kind of PcBN cutting tool and preparation method thereof | |
| RU2432250C2 (en) | Binder for production of diamond tool | |
| JP2009248237A (en) | Titanium carbonitride-based cermet cutting tool excellent in wear resistance | |
| JP2010274346A (en) | Cutting tool | |
| GB2383799A (en) | Diamond containing cermet | |
| CN111809092A (en) | Hard alloy extrusion die material and preparation method thereof | |
| JP4781934B2 (en) | Method for producing aluminum alloy matrix composite | |
| JP2010253607A (en) | Cutting tool | |
| CN100427245C (en) | Control method of powder oxygen content in manufacturing process of ultrafine hard alloy | |
| JPH04144968A (en) | High hardness titanium boride-based ceramics | |
| JPS621348B2 (en) | ||
| JPH0121214B2 (en) | ||
| JPH03215363A (en) | Production of ceramic material based on cubic boron nitride having high toughness | |
| CN111534734A (en) | Hard alloy raw material and preparation method thereof | |
| CN109763051A (en) | A kind of silicon carbide, nickel, titanium carbide mixing material production technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |