CN111270120B - Preparation method of diamond particle reinforced composite cutter material for cutting stone - Google Patents
Preparation method of diamond particle reinforced composite cutter material for cutting stone Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- 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
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- 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
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- 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
- C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
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Abstract
A preparation method of a diamond particle reinforced composite cutter material for cutting stone is characterized in that a re-pressing and re-sintering process in a powder metallurgy method is adopted, copper powder, iron powder, zinc powder and artificial diamond particles are weighed according to a proportion, other raw materials except the iron powder are mixed to obtain powder, then the copper-based composite powder and the iron powder are placed in a graphite mold to be pressed into a blank, the initial pressure is 200MPa, the formed blank is placed in a tube furnace, the temperature is kept for 2h when the temperature in the furnace is raised to 500 ℃, then the pressed blank is re-pressed under the pressure of 750MPa, finally the temperature is raised to 740-780 ℃, the temperature is kept for 2h, and secondary sintering is carried out, and finally the diamond particle reinforced composite cutter material is obtained. The material has excellent heat conductivity and wear resistance, high strength, good toughness and lower production cost, and has good economic and social benefits when popularized and applied.
Description
Technical Field
The invention belongs to the technical field of particle reinforced metal matrix composite materials, and particularly relates to a preparation method of a diamond particle reinforced composite cutter material for cutting stone.
Background
In the field of cutting tools, the traditional tool materials include tool steel, high-speed steel, hard alloy and the like. Among them, the tool steel has poor heat resistance and is generally used only for hand tools and some simple tools with low cutting speed, such as hand taps, files, saw blades, etc. Compared with tool steel, the high-speed steel has good heat resistance and high hardness, the allowable cutting speed is 1-3 times that of carbon tool steel, and the service life is prolonged by 10-40 times than that of the tool steel; the wear resistance, the strength and the toughness are good, the bending strength is 3-5 times that of common hard alloy, and the impact toughness is 6-10 times that of the hard alloy; compared with hard alloy, the high-speed steel has good machinability and excellent comprehensive mechanical property, and plays an important role in manufacturing complex cutters. For the hard alloy higher speed steel, the hardness, the wear resistance and the heat resistance are better, the allowable cutting speed is 6 times of that of the high speed steel, and the service life is several times or even dozens of times longer than that of the high speed steel; however, the hard alloy has high cost and poor machinability, and has poor capability of bearing cutting vibration and impact, the impact toughness at normal temperature is only 1/8-1/30 of high-speed steel, and the hard alloy is mainly used for machining high-hardness materials including hardened steel.
The novel cutter material comprises ceramic material, diamond, cubic boron nitride, coating cutter and the like. The common ceramic for the cutter has pure Al2O3Ceramics and TiC-Al2O3The two kinds of mixed ceramics have good chemical stability and strong anti-bonding capability, but have low strength, large brittleness and easy edge breakage, so the ceramic cutting tool is generally used for fine machining of high-hardness materials. The artificial diamond has high hardness, second only to natural diamond, excellent wear resistance, small friction coefficient with metal, but great affinity with iron group metal, so that it is used in superfinishing non-ferrous and non-metallic materials. Cubic boron nitride has high hardness, good heat resistance, good chemical stability and good grindability, but has poor welding performance and slightly lower bending strength than hard alloy, and is commonly used as a cutter material for processing difficult-to-process materials such as high-temperature alloy, quenched steel, chilled cast iron and the like. The coated cutter is formed by coating a layer of refractory metal compound on a substrate of high-speed steel and hard alloy through a series of methods, so that the coated cutter has high surface hardness and good wear resistance, the service life of the coated cutter is prolonged by 1-3 times compared with that of the hard alloy cutter, and the service life of the coated cutter is prolonged by 1.5-10 times compared with that of the high-speed steel cutter.
At present, a series of problems commonly exist when stone is cut and processed, such as low quality of workers, poor working environment, complex processing working conditions and the like. At the cutting building stones in-process, the rotational speed of cutter is high, the depth of cut is big, the holistic processing means of workman is comparatively direct, thick and thin, the wearing and tearing of cutter are rarely considered, generate heat and become invalid to lead to cutting tool's calorific capacity very big, the loss is very high, can produce a large amount of uneven building stones granule of particle diameter at the cutting building stones in-process simultaneously, thereby produce the secondary damage to cutting tool, not only shorten the life of cutter by a wide margin, and the indirect processing cost who has improved the product. The existing cutter materials (traditional cutter materials and novel cutter materials) are not practical under the complex working condition of cutting stone materials and cannot meet the condition of cutting stone materials, so that the research on a novel composite cutter material with low cost, high thermal conductivity, excellent wear resistance and high toughness is imperative.
The artificial diamond has many excellent characteristics such as high hardness, good wear resistance, excellent heat conductivity, low thermal expansion coefficient, etc., and the performance thereof is similar to that of natural diamond, and the artificial diamond has gradually become industrialized with the continuous development of the artificial diamond technology. Copper has excellent ductility, good thermal conductivity, and can be recycled without impairing its properties. The bending strength of the metallic iron is high, the abrasion resistance is good, and the comprehensive performance and the bonding strength of the Cu-iron powder alloy are good. Therefore, the diamond particle reinforced cutter material for cutting stone is prepared by taking the artificial diamond as a main cutting edge, taking the copper alloy as a base material and taking the metal iron as a buffer layer material.
Disclosure of Invention
The invention aims to provide a preparation method of a diamond particle reinforced composite cutter material for cutting stone, which takes artificial diamond as a reinforcement and metal iron as a transition layer to prepare the diamond particle reinforced composite cutter material with excellent comprehensive performance, and is mainly applied to the field of cutter materials for cutting stone. The material has the characteristics of good wear resistance, excellent impact toughness, high bending strength, high heat conductivity and the like, and is low in production cost, small in processing difficulty and suitable for mass production.
The invention adopts the technical scheme that the preparation method of the diamond particle reinforced composite cutter material for cutting stone comprises the following specific operation steps:
step 1: weighing copper powder, zinc powder, iron powder and artificial diamond particles, wherein the mass percentages of the materials are as follows: 18 to 22 percent of zinc powder, 36 to 38 percent of iron powder, 8 to 12 percent of artificial diamond particles, and the balance of copper and inevitable impurities;
step 2: mixing weighed copper powder, zinc powder and artificial diamond particles, putting the mixture into a ball milling tank, wherein the ball-material ratio is 3:5, introducing argon gas for protection, carrying out ball milling and mixing for 6 hours at a ball milling speed of 300r/min, mixing materials in a forward and reverse rotation mode, and the interval time is 30 s; after the mixing is finished, filling the copper-based composite powder into a vacuum bag, and vacuumizing and sealing the vacuum bag;
and step 3: placing the copper-based composite powder and iron powder in a graphite mold for compacting, firstly laying a layer of copper-based composite powder with the thickness of 2.8-3 mm in the mold, and carrying out initial pressing under the pressure of 200MPa for 3 min; then paving an iron powder with the thickness of 2.5-2.7 mm on the basis, and carrying out primary pressing under the pressure of 200MPa for 3 min; repeating the steps for 1-10 times to finally obtain the prefabricated composite cutter material with a layered structure;
and 4, step 4: then placing the molded prefabricated composite cutter material into a tubular furnace, sintering in a hydrogen atmosphere, wherein the initial temperature of the tubular furnace is 200 ℃, the heating rate is 15 ℃/min, and the temperature is kept for 2h after being increased to 500 ℃; and after the heat preservation is finished, carrying out re-pressing on the pressed blank under the pressure of 750MPa for 3min, carrying out secondary sintering after re-pressing, then cooling the pressed blank along with the furnace until the temperature is lower than 100 ℃, taking out the pressed blank from the furnace, and carrying out air cooling to room temperature to finally obtain the product.
The present invention is also characterized in that,
in step 1, the granularity of the copper powder is 160 meshes, the granularity of the zinc powder is 200 meshes, the granularity of the iron powder is 200 meshes, and the average grain diameter of the artificial diamond particles is 200 mu m.
The graphite mold had dimensions of 15mm by 22 mm.
And 2, ball milling and mixing powder in a polyurethane ball milling tank by adopting ball milling in the step 2, wherein 4mm, 6mm or 8mm agate balls are selected.
The secondary sintering temperature in the step 4 is 740-780 ℃, and the heat preservation is carried out for 2 hours.
Compared with the prior art, the invention has the following advantages:
1. the material used in the invention does not contain noble metal, and the used copper, iron, zinc and artificial diamond particles have wide sources, low price and lower production cost.
2. The copper-based composite material prepared by the invention adopts a new structure taking iron as a buffer layer in structure, and finally, a new material similar to a hamburger structure is prepared, so that the structure is novel; meanwhile, the metal iron is used as the buffer layer to slow down the abrasion speed of the cutter, so that the cutter is well protected in the stone cutting process, and the cutter is very practical under the complex working condition when the stone is cut.
3. The diamond particle reinforced composite cutting tool material disclosed by the invention combines excellent thermal conductivity, wear resistance and ultrahigh hardness of diamond on the basis of good ductility and thermal conductivity of metal copper, so that the composite material finally has the characteristics of good thermal conductivity, excellent wear resistance, good toughness and the like.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1:
taking copper powder with the granularity of 160 meshes, zinc powder with the granularity of 200 meshes, iron powder with the granularity of 200 meshes and artificial diamond particles with the average particle size of 200 mu m as raw materials, wherein the mass percentages of the components are as follows: 18 percent of zinc powder; 38 percent of iron powder; 9% of artificial diamond particles, and the balance of copper and inevitable impurities. Firstly, weighing copper powder, zinc powder and artificial diamond particles, mixing the materials, putting the mixture into a polyurethane ball milling tank, adopting 4mm, 6mm and 8mm agate balls with a ball-material ratio of 3:5, introducing argon gas for protection, carrying out ball milling and mixing, wherein the ball milling time and speed are respectively 6h and 300r/min, adopting positive and negative rotation mixing, and the interval time is 30 s. And after the mixing is finished, filling the copper-based composite powder into a vacuum bag, and vacuumizing the vacuum bag for sealing.
Secondly, placing the copper-based composite powder and the iron powder in a graphite die with the diameter of 15mm multiplied by 22mm for compacting. Firstly, laying a layer of copper-based composite powder with the thickness of 2.8mm in a mould, and carrying out initial pressing under the pressure of 200MPa for 3 min; then paving a layer of iron powder with the thickness of 2.5mm on the basis, and carrying out primary pressing under the pressure of 200MPa for 3 min; and repeating the steps to finally prepare the prefabricated copper-based composite material with three iron layers and four copper layers, then placing the formed prefabricated copper-based composite material into a tubular furnace, sintering in a hydrogen atmosphere, wherein the initial temperature of the tubular furnace is 200 ℃, the heating rate is 15 ℃/min, and the temperature is kept for 2h after being increased to 500 ℃. And (3) after the heat preservation is finished, immediately carrying out re-pressing on the pressed blank under the pressure of 750MPa, keeping the pressure for 3min, carrying out secondary sintering at the temperature of 740 ℃ after re-pressing, then cooling along with the furnace to the temperature lower than 100 ℃, taking out of the furnace, and carrying out air cooling to the room temperature to obtain the product, wherein the mechanical properties of the product are shown in Table 1.
Example 2:
taking copper powder with the granularity of 160 meshes, zinc powder with the granularity of 200 meshes, iron powder with the granularity of 200 meshes and artificial diamond particles with the average particle size of 200 mu m as raw materials, wherein the mass percentages of the components are as follows: 19 percent of zinc powder; 37.5 percent of iron powder; 11% of artificial diamond particles, and the balance of copper and inevitable impurities. Firstly, weighing copper powder, zinc powder and artificial diamond particles, mixing the materials, putting the mixture into a polyurethane ball milling tank, adopting 4mm, 6mm and 8mm agate balls with a ball-material ratio of 3:5, introducing argon gas for protection, carrying out ball milling and mixing, wherein the ball milling time and speed are respectively 6h and 300r/min, adopting positive and negative rotation mixing, and the interval time is 30 s. And after the mixing is finished, filling the copper-based composite powder into a vacuum bag, and vacuumizing the vacuum bag for sealing.
Secondly, placing the copper-based composite powder and the iron powder in a graphite die with the diameter of 15mm multiplied by 22mm for compacting. Firstly, laying a layer of copper-based composite powder with the thickness of 3mm in a mould, and carrying out initial pressing under the pressure of 200MPa for 3 min; then paving a layer of iron powder with the thickness of 2.7mm on the basis, and carrying out primary pressing under the pressure of 200MPa for 3 min; repeating the steps to finally prepare the prefabricated copper-based composite material with three iron layers and four copper layers; and then, placing the molded prefabricated copper-based composite material into a tubular furnace, sintering in a hydrogen atmosphere, wherein the initial temperature of the tubular furnace is 200 ℃, the heating rate is 15 ℃/min, and the temperature is kept for 2h after being increased to 500 ℃. And (3) after the heat preservation is finished, immediately carrying out re-pressing on the pressed blank under the pressure of 750MPa, keeping the pressure for 3min, carrying out secondary sintering at the temperature of 780 ℃ after re-pressing, then cooling along with the furnace to the temperature lower than 100 ℃, taking out of the furnace, and carrying out air cooling to the room temperature to obtain the product, wherein the mechanical properties of the product are shown in Table 1.
Example 3:
taking copper powder with the granularity of 160 meshes, zinc powder with the granularity of 200 meshes, iron powder with the granularity of 200 meshes and artificial diamond particles with the average particle size of 200 mu m as raw materials, wherein the mass percentages of the components are as follows: 20 percent of zinc powder; 37 percent of iron powder; 10% of artificial diamond particles, and the balance of copper and inevitable impurities. Firstly, weighing copper powder, zinc powder and artificial diamond particles, mixing the materials, putting the mixture into a polyurethane ball milling tank, adopting 4mm, 6mm and 8mm agate balls with a ball-material ratio of 3:5, introducing argon gas for protection, carrying out ball milling and mixing, wherein the ball milling time and speed are respectively 6h and 300r/min, adopting positive and negative rotation mixing, and the interval time is 30 s. And after the mixing is finished, filling the copper-based composite powder into a vacuum bag, and vacuumizing the vacuum bag for sealing.
Secondly, placing the copper-based composite powder and the iron powder in a graphite die with the diameter of 15mm multiplied by 22mm for compacting. Firstly, laying a layer of copper-based composite powder with the thickness of 2.9mm in a mould, and carrying out initial pressing under the pressure of 200MPa for 3 min; then paving a layer of iron powder with the thickness of 2.6mm on the basis, and carrying out primary pressing under the pressure of 200MPa for 3 min; repeating the steps to finally prepare the prefabricated copper-based composite material with three iron layers and four copper layers; and then, placing the molded prefabricated copper-based composite material into a tubular furnace, sintering in a hydrogen atmosphere, wherein the initial temperature of the tubular furnace is 200 ℃, the heating rate is 15 ℃/min, and the temperature is kept for 2h after being increased to 500 ℃. And (3) after the heat preservation is finished, immediately carrying out re-pressing on the pressed blank under the pressure of 750MPa, keeping the pressure for 3min, carrying out secondary sintering at the temperature of 760 ℃ after re-pressing, then cooling to the temperature lower than 100 ℃ along with the furnace, taking out of the furnace, and carrying out air cooling to the room temperature to obtain the product, wherein the mechanical properties of the product are shown in Table 1.
Example 4:
taking copper powder with the granularity of 160 meshes, zinc powder with the granularity of 200 meshes, iron powder with the granularity of 200 meshes and artificial diamond particles with the average particle size of 200 mu m as raw materials, wherein the mass percentages of the components are as follows: 21 percent of zinc powder; 36.5 percent of iron powder; 12% of artificial diamond particles, and the balance of copper and inevitable impurities. Firstly, weighing copper powder, zinc powder and artificial diamond particles, mixing the materials, putting the mixture into a polyurethane ball milling tank, adopting 4mm, 6mm and 8mm agate balls with a ball-material ratio of 3:5, introducing argon gas for protection, carrying out ball milling and mixing, wherein the ball milling time and speed are respectively 6h and 300r/min, adopting positive and negative rotation mixing, and the interval time is 30 s. And after the mixing is finished, filling the copper-based composite powder into a vacuum bag, and vacuumizing the vacuum bag for sealing.
Secondly, placing the copper-based composite powder and the iron powder in a graphite die with the diameter of 15mm multiplied by 22mm for compacting. Firstly, laying a layer of copper-based composite powder with the thickness of 3mm in a mould, and carrying out initial pressing under the pressure of 200MPa for 3 min; then paving a layer of iron powder with the thickness of 2.6mm on the basis, and carrying out primary pressing under the pressure of 200MPa for 3 min; and repeating the steps to finally prepare the prefabricated copper-based composite material with three iron layers and four copper layers, then placing the formed prefabricated copper-based composite material into a tubular furnace, sintering in a hydrogen atmosphere, wherein the initial temperature of the tubular furnace is 200 ℃, the heating rate is 15 ℃/min, and the temperature is kept for 2h after being increased to 500 ℃. And (3) after the heat preservation is finished, immediately carrying out re-pressing on the pressed blank under the pressure of 750MPa, keeping the pressure for 3min, carrying out secondary sintering at the temperature of 780 ℃ after re-pressing, then cooling along with the furnace to the temperature lower than 100 ℃, taking out of the furnace, and carrying out air cooling to the room temperature to obtain the product, wherein the mechanical properties of the product are shown in Table 1.
Example 5:
taking copper powder with the granularity of 160 meshes, zinc powder with the granularity of 200 meshes, iron powder with the granularity of 200 meshes and artificial diamond particles with the average particle size of 200 mu m as raw materials, wherein the mass percentages of the components are as follows: 22 percent of zinc powder; 36 percent of iron powder; 8 percent of artificial diamond particles, and the balance of copper and inevitable impurities. Firstly, weighing copper powder, zinc powder and artificial diamond particles, mixing the materials, putting the mixture into a polyurethane ball milling tank, adopting 4mm, 6mm and 8mm agate balls with a ball-material ratio of 3:5, introducing argon gas for protection, carrying out ball milling and mixing, wherein the ball milling time and speed are respectively 6h and 300r/min, adopting positive and negative rotation mixing, and the interval time is 30 s. And after the mixing is finished, filling the copper-based composite powder into a vacuum bag, and vacuumizing the vacuum bag for sealing.
Secondly, placing the copper-based composite powder and the iron powder in a graphite die with the diameter of 15mm multiplied by 22mm for compacting. Firstly, laying a layer of copper-based composite powder with the thickness of 2.8mm in a mould, and carrying out initial pressing under the pressure of 200MPa for 3 min; then paving a layer of iron powder with the thickness of 2.5mm on the basis, and carrying out primary pressing under the pressure of 200MPa for 3 min; and repeating the steps to finally prepare the prefabricated copper-based composite material with three iron layers and four copper layers, then placing the formed prefabricated copper-based composite material into a tubular furnace, sintering in a hydrogen atmosphere, wherein the initial temperature of the tubular furnace is 200 ℃, the heating rate is 15 ℃/min, and the temperature is kept for 2h after being increased to 500 ℃. And (3) after the heat preservation is finished, immediately carrying out re-pressing on the pressed blank under the pressure of 750MPa, keeping the pressure for 3min, carrying out secondary sintering at the temperature of 760 ℃ after re-pressing, then cooling to the temperature lower than 100 ℃ along with the furnace, taking out of the furnace, and carrying out air cooling to the room temperature to obtain the product, wherein the mechanical properties of the product are shown in Table 1.
TABLE 1 mechanical Properties of Diamond particle reinforced composite cutter Material for cutting Stone Material
The mechanical property test results shown in table 1 show that the tensile strength, hardness, impact toughness and thermal conductivity of the composite cutter material prepared by the method all meet the current standards in the stone cutting industry. Compared with the traditional common stone cutter, the hardness of the material is slightly improved, the tensile strength and the impact toughness are respectively improved by 4.2-6.8 percent and 5-7.5 percent, and the thermal conductivity is improved by 16.3-20.7 percent, so that the material has more excellent capabilities of keeping hardness, wear resistance, strength and bonding resistance at high temperature, has good process performance, and has better economy in mass production.
The material used in the invention does not contain noble metal, and the used copper powder, iron powder and artificial diamond particles have wide sources and lower production cost. The composite material prepared by the invention adopts metal iron as a transition layer structure in structure, and finally the composite material with a layered sandwich structure is prepared, the structure is novel, and the mechanical property of the reinforcement material is fully exerted to the greatest extent. The novel copper-based alloy material has the characteristics of excellent thermal conductivity, good wear resistance, high toughness and the like.
Claims (3)
1. A preparation method of a diamond particle reinforced composite cutter material for cutting stone is characterized by comprising the following steps:
step 1: weighing copper powder, zinc powder, iron powder and artificial diamond particles, wherein the mass percentages of the materials are as follows: 18 to 22 percent of zinc powder, 36 to 38 percent of iron powder, 8 to 12 percent of artificial diamond particles, and the balance of copper and inevitable impurities;
step 2: mixing weighed copper powder, zinc powder and artificial diamond particles, putting the mixture into a ball milling tank, wherein the ball-material ratio is 3:5, introducing argon gas for protection, carrying out ball milling and mixing for 6 hours at a ball milling speed of 300r/min, mixing materials in a forward and reverse rotation mode, and the interval time is 30 s; after the mixing is finished, filling the copper-based composite powder into a vacuum bag, and vacuumizing and sealing the vacuum bag;
the ball milling adopts a polyurethane ball milling tank to perform ball milling and powder mixing, and agate balls with the diameter of 4mm, 6mm or 8mm are selected;
and step 3: placing the copper-based composite powder and the iron powder in a graphite die for compacting, firstly laying a layer of copper-based composite powder with the thickness of 2.8-3 mm in the die, and carrying out initial pressing under the pressure of 200MPa for 3 min; then paving an iron powder with the thickness of 2.5-2.7 mm on the basis, and carrying out primary pressing under the pressure of 200MPa for 3 min; repeating the steps to finally prepare the prefabricated copper-based composite material with three iron layers and four copper layers; and 4, step 4: then placing the molded prefabricated copper-based composite material into a tubular furnace, sintering in a hydrogen atmosphere, wherein the initial temperature of the tubular furnace is 200 ℃, the heating rate is 15 ℃/min, and the temperature is raised to 500 ℃ and then is kept for 2 h; after the heat preservation is finished, carrying out re-pressing on the pressed blank under the pressure of 750MPa for 3min, carrying out secondary sintering after re-pressing, then cooling the pressed blank along with the furnace to the temperature lower than 100 ℃, taking out of the furnace and air cooling the pressed blank to the room temperature, and finally obtaining a product; the secondary sintering temperature is 740-780 ℃, and the heat preservation is carried out for 2 h.
2. The method of manufacturing a diamond particle reinforced composite cutter material for cutting stone as set forth in claim 1, wherein said copper powder has a particle size of 160 mesh and 200 mesh, said iron powder has a particle size of 200 mesh, and said artificial diamond particles have an average particle size of 200 μm.
3. The method of manufacturing a diamond particle reinforced composite cutter material for cutting stone as set forth in claim 1, wherein the graphite mold has a size of 15mm x 22 mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169993A (en) * | 1983-03-12 | 1984-09-26 | Showa Denko Kk | Synthesis of diamond |
| GB2486973A (en) * | 2010-12-29 | 2012-07-04 | Element Six Abrasives Sa | A polycrystalline superhard material |
| CN105838916A (en) * | 2016-05-23 | 2016-08-10 | 深圳市瑞世兴科技有限公司 | Preparation method of diamond-copper composite |
| CN105921738A (en) * | 2016-05-04 | 2016-09-07 | 江苏科技大学 | Sintered diamond milling cutter blank with strong-holding capacity, milling cutter and manufacturing method for milling cutter |
| CN109648717A (en) * | 2019-02-26 | 2019-04-19 | 福建省泉州万龙石业有限公司 | A kind of diamond tool bit for cutting stone material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130098691A1 (en) * | 2011-10-25 | 2013-04-25 | Longyear Tm, Inc. | High-strength, high-hardness binders and drilling tools formed using the same |
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2020
- 2020-03-25 CN CN202010220459.8A patent/CN111270120B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169993A (en) * | 1983-03-12 | 1984-09-26 | Showa Denko Kk | Synthesis of diamond |
| GB2486973A (en) * | 2010-12-29 | 2012-07-04 | Element Six Abrasives Sa | A polycrystalline superhard material |
| CN105921738A (en) * | 2016-05-04 | 2016-09-07 | 江苏科技大学 | Sintered diamond milling cutter blank with strong-holding capacity, milling cutter and manufacturing method for milling cutter |
| CN105838916A (en) * | 2016-05-23 | 2016-08-10 | 深圳市瑞世兴科技有限公司 | Preparation method of diamond-copper composite |
| CN109648717A (en) * | 2019-02-26 | 2019-04-19 | 福建省泉州万龙石业有限公司 | A kind of diamond tool bit for cutting stone material |
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Effective date of registration: 20220624 Address after: 522061 Nantang, Jiaolong village, DIDU Town, Jieyang Airport Economic Zone, Jieyang City, Guangdong Province Patentee after: Jieyang Airport Economic Zone Tuojin Diamond Tools Co.,Ltd. Address before: 710048 Shaanxi province Xi'an Beilin District Jinhua Road No. 19 Patentee before: XI'AN POLYTECHNIC University |