CN111304561A - Wear-resistant high-strength metal ceramic material and preparation process thereof - Google Patents
Wear-resistant high-strength metal ceramic material and preparation process thereof Download PDFInfo
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Abstract
The invention discloses a wear-resistant high-strength metal ceramic material and a preparation process thereof, wherein the wear-resistant high-strength metal ceramic material is prepared from the following raw materials: iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride, alloy powder, calcium carbonate whisker, red mud, polyacrylate and epoxy resin. According to the wear-resistant high-strength metal ceramic material prepared by the invention, the ceramic raw material and the alloy powder are combined and proportioned, and the calcium carbonate whisker and the red mud are added, so that the ceramic raw material and the alloy powder can be perfectly combined, the strength and toughness of the metal ceramic material can be improved, the wear-resistant performance is enhanced, the mechanical property is good, and meanwhile, the pollution and pressure of the red mud to the environment can be reduced, the cost is reduced, and the reasonable utilization of resources is realized.
Description
Technical Field
The invention relates to the field of composite materials, in particular to a wear-resistant high-strength metal ceramic material and a preparation process thereof.
Background
The metal material has excellent mechanical properties such as strength, rigidity, compression resistance, impact resistance and the like, so the metal material is widely applied. However, metal materials are generally made of pure metal components, are easily corroded and deteriorated by external factors, and cannot meet the operation requirements in some environments with high temperature, high heat, wear resistance, flexibility and the like.
With the increase of production level, the cermet materials are rapidly developed. Cermet materials are favored for combining many advantages of ceramics and metals, for example, have certain wear resistance, and can be applied to all kinds of heavy-wear mechanical equipment such as coal conveying, material conveying systems, powder making systems, ash discharge systems, dust removal systems and the like. However, most of the produced cermet materials are made by sintering metal-filled ceramic particles, the bonding property between the ceramic particles and a metal framework is poor, and the mechanical properties are general, relating to high temperature resistance, corrosion resistance, water seepage resistance, strength and the like.
Chinese patent CN105149875B discloses a method for manufacturing a low-cost and high-wear-resistance ceramic alloy composite lining plate, wherein pretreated ceramic particles and low-melting-point alloy powder are uniformly mixed by using a binder to obtain a mixture; filling the mixture into a mold cavity for molding, putting the biscuit and the mold into a drying box together for drying, and sintering in a vacuum furnace to obtain a ceramic prefabricated part; fixing the ceramic prefabricated part on the surface of a casting cavity of the ceramic alloy prefabricated part, and then pouring wear-resistant alloy molten metal to obtain the ceramic alloy prefabricated part; carrying out heat treatment on the ceramic alloy prefabricated part; smelting a parent metal material to form molten metal, pouring the molten metal into a casting mold cavity to obtain a lining plate base, and finally welding the ceramic alloy prefabricated part on the lining plate base.
Chinese patent CN103418790B discloses a metal ceramic composite wear-resistant product and a preparation method thereof. The structural properties are enhanced by at least one type of metal oxide, metal carbide, metal nitride or metal boride, and intermetallic compounds. The metal ceramic composite wear-resistant product is formed by uniformly mixing ceramic particles and metal powder or a mixture obtained by uniformly mixing the ceramic particles and the metal powder by using an auxiliary agent and a metal ceramic particle prefabricated part made of the metal powder, and carrying out high-temperature sintering heat treatment.
Chinese patent CN104862641B discloses a method for preparing a wear-resistant ceramic metal material, which comprises the steps of melting alumina powder or silicon carbide powder into liquid at high temperature, then die-casting the liquid onto alloy metal with grid depressions and coated with a layer of mixture containing metal silicon particles, metal silicon micropowder and carbon powder at high pressure, thereby preparing the wear-resistant ceramic metal material.
Therefore, aiming at the problems, the invention provides a wear-resistant high-strength metal ceramic material and a preparation process thereof, and solves the problems of poor combination stability, low strength, poor wear resistance, general high-temperature and high-pressure resistance, complex preparation process and higher production cost of the existing metal ceramic material.
Disclosure of Invention
Aiming at the problems, the invention provides a wear-resistant high-strength metal ceramic material and a preparation process thereof.
The technical scheme adopted by the invention for solving the problems is as follows: the wear-resistant high-strength metal ceramic material is prepared from the following raw materials in parts by weight: 12 to 20 parts of ferric oxide, 8 to 14 parts of silicon oxide, 6 to 16 parts of aluminum oxide, 10 to 20 parts of silicon nitride, 7 to 14 parts of magnesium boride, 11 to 18 parts of alloy powder, 3.2 to 3.8 parts of calcium carbonate whisker, 2.8 to 3.8 parts of red mud, 10.5 to 13.5 parts of polyacrylate and 2.2 to 3.2 parts of epoxy resin.
Further, the wear-resistant high-strength metal ceramic material is prepared from the following raw materials in parts by weight: 16 parts of ferric oxide, 11 parts of silicon oxide, 11 parts of aluminum oxide, 15 parts of silicon nitride, 10.5 parts of magnesium boride, 14.5 parts of alloy powder, 3.5 parts of calcium carbonate whisker, 3.3 parts of red mud, 12.0 parts of polyacrylate and 2.7 parts of epoxy resin.
The wear-resistant high-strength metal ceramic material provided by the invention selects ceramic raw materials such as iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride and the like, and is combined and proportioned with alloy powder, so that the strength of the ceramic raw materials is increased, the wear resistance is improved, and the strength and toughness of the metal ceramic material are enhanced by adding the calcium carbonate whiskers and the red mud, so that the high-temperature resistance and compression resistance are improved, and the comprehensive mechanical property is improved.
Further, the content of each component in the alloy powder is as follows: 10 to 15 percent of titanium, 8 to 12 percent of iron, 3.5 to 4.5 percent of magnesium, 12 to 20 percent of aluminum, 0.5 to 1.0 percent of boron and the balance of silicon.
Still further, the content of each component in the alloy powder is as follows: 12.5% of titanium, 10% of iron, 4.0% of magnesium, 16% of aluminum, 0.7% of boron and the balance of silicon.
Furthermore, the length of the calcium carbonate crystal whisker is 30-40 μm.
Further, the epoxy resin is any one of bisphenol F type epoxy resin, 4 '-dihydroxy diphenyl sulfone diglycidyl ether epoxy resin, dimethyl terephthalate epoxy resin and N, N' -di-p-hydroxy hexa-ethylene diamine.
The invention also aims to provide a preparation process of the wear-resistant high-strength cermet material, which comprises the following steps:
s1, weighing iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride, alloy powder, calcium carbonate whiskers, red mud, polyacrylate and epoxy resin according to parts by weight for later use;
s2, mixing the alloy powder weighed in S1 with calcium carbonate whiskers, and grinding for 3.5-6.5 hours by using a grinder under the condition that the rotating speed is 1500-2500 rpm to obtain mixed powder;
s3, mixing and crushing the iron oxide, the silicon oxide, the aluminum oxide, the silicon nitride and the magnesium boride weighed in S1 into 80-100 meshes, adding the mixed powder in S2, crushing again, adding the red mud, the polyacrylate and the epoxy resin weighed in S1, shearing and dispersing for 30-60 minutes, and injecting into a mold for molding to obtain a prefabricated product;
presintering the preforms in S4 and S3 at the temperature of 450-550 ℃ for 30-45 minutes, heating to 1150-1350 ℃ for sintering for 50-60 minutes, cooling to 350-450 ℃ for heat preservation for 30 minutes, heating to 850-950 ℃ for sintering for 30-40 minutes, and cooling with a furnace to obtain the wear-resistant high-strength cermet material.
Further, in S3, the powder is pulverized again to 120 to 150 mesh.
Further, in S3, during the molding process of the mold: the pressure is 8.5MPa to 14.5MPa, the temperature is 145 ℃ to 175 ℃, and the molding time is 2 hours to 3 hours.
Further, in S4, the cooling rate is 0.5 ℃/min to 2.5 ℃/min.
The invention has the advantages that:
1. according to the wear-resistant high-strength metal ceramic material prepared by the invention, the ceramic raw material and the alloy powder are combined and proportioned, and the calcium carbonate whisker and the red mud are added, so that the ceramic raw material and the alloy powder can be perfectly combined, the strength and toughness of the metal ceramic material can be improved, the wear-resistant performance is enhanced, the mechanical property is good, and meanwhile, the red mud is utilized, so that the pollution and pressure of the red mud to the environment can be reduced, the cost is reduced, and the reasonable utilization of resources is realized;
2. the wear-resistant high-strength cermet material prepared by the invention enhances the toughness, wear resistance and corrosion resistance of the traditional metal material by reinforcing the calcium carbonate whiskers and the red mud, the raw material adopts alloy powder, the utilization rate of the raw material is high, and the prepared cermet material has long service life and high cost performance;
3. the wear-resistant high-strength metal ceramic material prepared by the invention has the advantages of simple preparation method, strong process controllability, lower process energy consumption and low production cost, and is suitable for popularization.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
Example 1
Wear-resistant high-strength metal ceramic material
The wear-resistant high-strength metal ceramic material is prepared from the following raw materials in parts by weight: 12kg of ferric oxide, 8kg of silicon oxide, 6kg of aluminum oxide, 10kg of silicon nitride, 7kg of magnesium boride, 11kg of alloy powder, 3.2kg of calcium carbonate whisker, 2.8kg of red mud, 10.5kg of polyacrylate and 2.2kg of epoxy resin; the alloy powder comprises the following components in percentage by weight: 10% of titanium, 8% of iron, 3.5% of magnesium, 12% of aluminum, 0.5% of boron and the balance of silicon; the length of the calcium carbonate crystal whisker is 30 mu m; the epoxy resin is bisphenol F type epoxy resin.
The preparation process of the wear-resistant high-strength cermet material comprises the following steps:
s1, weighing iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride, alloy powder, calcium carbonate whiskers, red mud, polyacrylate and epoxy resin according to parts by weight for later use;
s2, mixing the alloy powder weighed in S1 with calcium carbonate whiskers, and grinding for 3.5 hours by using a grinder under the condition that the rotating speed is 1500 revolutions per minute to obtain mixed powder;
s3, mixing and crushing the iron oxide, the silicon oxide, the aluminum oxide, the silicon nitride and the magnesium boride weighed in S1 into 80 meshes, adding the mixed powder in S2, crushing into 120 meshes again, adding the red mud, the polyacrylate and the epoxy resin weighed in S1, shearing and dispersing for 30 minutes, and injecting into a mold for molding to obtain a prefabricated product;
in the above, in the mold forming process: the pressure was 8.5MPa, the temperature was 145 ℃ and the molding time was 2 hours.
Presintering the preforms in S4 and S3 at the temperature of 450 ℃ for 30 minutes, then heating to 1150 ℃ for sintering for 50 minutes, then cooling to 350 ℃ at the speed of 0.5 ℃/minute, keeping the temperature for 30 minutes, finally heating to 850 ℃ for sintering for 30 minutes, and cooling with a furnace to obtain the wear-resistant high-strength cermet material.
Example 2
Wear-resistant high-strength metal ceramic material
The wear-resistant high-strength metal ceramic material is prepared from the following raw materials in parts by weight: 20kg of iron oxide, 14kg of silicon oxide, 16kg of aluminum oxide, 20kg of silicon nitride, 14kg of magnesium boride, 18kg of alloy powder, 3.8kg of calcium carbonate whisker, 3.8kg of red mud, 13.5kg of polyacrylate and 3.2kg of epoxy resin; the alloy powder comprises the following components in percentage by weight: 15% of titanium, 12% of iron, 4.5% of magnesium, 20% of aluminum, 1.0% of boron and the balance of silicon; the length of the calcium carbonate crystal whisker is 40 mu m; the epoxy resin is 4, 4' -dihydroxy diphenyl sulfone diglycidyl ether epoxy resin.
The preparation process of the wear-resistant high-strength cermet material comprises the following steps:
s1, weighing iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride, alloy powder, calcium carbonate whiskers, red mud, polyacrylate and epoxy resin according to parts by weight for later use;
s2, mixing the alloy powder weighed in S1 with calcium carbonate whiskers, and grinding for 6.5 hours by using a grinder under the condition that the rotating speed is 2500 revolutions per minute to obtain mixed powder;
s3, mixing and crushing the iron oxide, the silicon oxide, the aluminum oxide, the silicon nitride and the magnesium boride weighed in S1 into 100 meshes, adding the mixed powder in S2, crushing into 150 meshes again, adding the red mud, the polyacrylate and the epoxy resin weighed in S1, shearing and dispersing for 60 minutes, and injecting into a mold for molding to obtain a prefabricated product;
in the above, in the mold forming process: the pressure was 14.5MPa, the temperature was 175 ℃ and the molding time was 3 hours.
Presintering the preforms in S4 and S3 at the temperature of 550 ℃ for 45 minutes, then heating to 1350 ℃ for sintering for 60 minutes, cooling to 450 ℃ at the speed of 2.5 ℃/minute, preserving the heat for 30 minutes, finally heating to 950 ℃ for sintering for 40 minutes, and cooling along with a furnace to obtain the wear-resistant high-strength cermet material.
Example 3
Wear-resistant high-strength metal ceramic material
The wear-resistant high-strength metal ceramic material is prepared from the following raw materials in parts by weight: 14kg of ferric oxide, 10kg of silicon oxide, 8kg of aluminum oxide, 12kg of silicon nitride, 9kg of magnesium boride, 13kg of alloy powder, 3.4kg of calcium carbonate whisker, 3.0kg of red mud, 11.5kg of polyacrylate and 2.4kg of epoxy resin; the alloy powder comprises the following components in percentage by weight: 11% of titanium, 9% of iron, 3.8% of magnesium, 14% of aluminum, 0.6% of boron and the balance of silicon; the length of the calcium carbonate crystal whisker is 32 mu m; the epoxy resin is dimethyl terephthalate epoxy resin.
The preparation process of the wear-resistant high-strength cermet material comprises the following steps:
s1, weighing iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride, alloy powder, calcium carbonate whiskers, red mud, polyacrylate and epoxy resin according to parts by weight for later use;
s2, mixing the alloy powder weighed in S1 with calcium carbonate whiskers, and grinding for 4.5 hours by using a grinder under the condition that the rotating speed is 1800 rpm to obtain mixed powder;
s3, mixing and crushing the iron oxide, the silicon oxide, the aluminum oxide, the silicon nitride and the magnesium boride weighed in S1 into 80 meshes, adding the mixed powder in S2, crushing into 130 meshes again, adding the red mud, the polyacrylate and the epoxy resin weighed in S1, shearing and dispersing for 40 minutes, and injecting into a mold for molding to obtain a prefabricated product;
in the above, in the mold forming process: the pressure was 9.5MPa, the temperature was 155 ℃ and the molding time was 2.2 hours.
Presintering the preforms in S4 and S3 at 470 ℃ for 35 minutes, then heating to 1200 ℃ for sintering for 52 minutes, then cooling to 380 ℃ at the speed of 1.0 ℃/minute, keeping the temperature for 30 minutes, finally heating to 880 ℃ for sintering for 32 minutes, and furnace cooling to obtain the wear-resistant high-strength cermet material.
Example 4
Wear-resistant high-strength metal ceramic material
The wear-resistant high-strength metal ceramic material is prepared from the following raw materials in parts by weight: 18kg of iron oxide, 12kg of silicon oxide, 14kg of aluminum oxide, 18kg of silicon nitride, 12kg of magnesium boride, 17kg of alloy powder, 3.7kg of calcium carbonate whisker, 3.5kg of red mud, 12.6kg of polyacrylate and 3.0kg of epoxy resin; the alloy powder comprises the following components in percentage by weight: 14% of titanium, 11% of iron, 4.0% of magnesium, 18% of aluminum, 0.9% of boron and the balance of silicon; the length of the calcium carbonate crystal whisker is 38 mu m; the epoxy resin is N, N' -di-p-hydroxy hexa-ethylene diamine.
The preparation process of the wear-resistant high-strength cermet material comprises the following steps:
s1, weighing iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride, alloy powder, calcium carbonate whiskers, red mud, polyacrylate and epoxy resin according to parts by weight for later use;
s2, mixing the alloy powder weighed in S1 with calcium carbonate whiskers, and grinding for 5.5 hours by using a grinder under the condition that the rotating speed is 2200 revolutions per minute to obtain mixed powder;
s3, mixing and crushing the iron oxide, the silicon oxide, the aluminum oxide, the silicon nitride and the magnesium boride weighed in the S1 into 100 meshes, adding the mixed powder in the S2, crushing into 140 meshes again, adding the red mud, the polyacrylate and the epoxy resin weighed in the S1, shearing and dispersing for 50 minutes, and injecting into a mold for molding to obtain a prefabricated product;
in the above, in the mold forming process: the pressure was 13.5MPa, the temperature was 165 ℃ and the molding time was 2.6 hours.
Presintering the preforms in S4 and S3 at the temperature of 520 ℃ for 43 minutes, then heating to 1300 ℃ for sintering for 58 minutes, then cooling to 420 ℃ at the speed of 2.0 ℃/minute, keeping the temperature for 30 minutes, finally heating to 930 ℃ for sintering for 38 minutes, and cooling with a furnace to obtain the wear-resistant high-strength cermet material.
Example 5
Wear-resistant high-strength metal ceramic material
The wear-resistant high-strength metal ceramic material is prepared from the following raw materials in parts by weight: 16kg of ferric oxide, 11kg of silicon oxide, 11kg of aluminum oxide, 15kg of silicon nitride, 10.5kg of magnesium boride, 14.5kg of alloy powder, 3.5kg of calcium carbonate whisker, 3.3kg of red mud, 12.0kg of polyacrylate and 2.7kg of epoxy resin; the alloy powder comprises the following components in percentage by weight: 12.5% of titanium, 10% of iron, 4.0% of magnesium, 16% of aluminum, 0.7% of boron and the balance of silicon; the length of the calcium carbonate crystal whisker is 35 mu m; the epoxy resin is bisphenol F type epoxy resin.
The preparation process of the wear-resistant high-strength cermet material comprises the following steps:
s1, weighing iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride, alloy powder, calcium carbonate whiskers, red mud, polyacrylate and epoxy resin according to parts by weight for later use;
s2, mixing the alloy powder weighed in S1 with calcium carbonate whiskers, and grinding for 5.0 hours by using a grinder under the condition that the rotating speed is 2000 revolutions per minute to obtain mixed powder;
s3, mixing and crushing the iron oxide, the silicon oxide, the aluminum oxide, the silicon nitride and the magnesium boride weighed in S1 into 90 meshes, adding the mixed powder in S2, crushing into 130 meshes again, adding the red mud, the polyacrylate and the epoxy resin weighed in S1, shearing and dispersing for 45 minutes, and injecting into a mold for molding to obtain a prefabricated product;
in the above, in the mold forming process: the pressure is 12.5MPa, the temperature is 160 ℃, and the molding time is 2.5 hours.
Presintering the preforms in S4 and S3 at the temperature of 500 ℃ for 40 minutes, then heating to 1250 ℃ for sintering for 55 minutes, then cooling to 400 ℃ at the speed of 1.5 ℃/minute, keeping the temperature for 30 minutes, finally heating to 900 ℃ for sintering for 35 minutes, and cooling along with a furnace to obtain the wear-resistant high-strength cermet material.
Examples of the experiments
The wear-resistant high-strength cermet materials prepared in the embodiments 1 to 5 of the invention are respectively tested for hardness, bending strength, fracture toughness and wear resistance, and statistical test results are shown in the following table 1;
and (3) wear resistance test: the wear-resistant high-strength cermet materials prepared in the examples 1 to 5 are made into sample blocks with the size of 100 x 20mm, the sample blocks are installed in testing equipment, quartz slurry with the particle size of 120-200 meshes and the solid content of 50-55% is adopted, the sample blocks are directly washed by the pressure of 1MPa and the impact angle of 90 degrees, the washing time is 7 hours, and the volume loss is tested by a water immersion method.
TABLE 1 test results of the wear-resistant high-strength cermet materials prepared in examples 1 to 5
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Hardness (HRA) | 94.3 | 92.8 | 95.0 | 93.7 | 93.8 |
| Bending strength (MPa) | 1925 | 1963 | 1978 | 1989 | 1988 |
| Fracture toughness (MPa. m)1/2) | 18.21 | 18.32 | 18.42 | 18.45 | 18.25 |
| Volume loss (nm)3) | 0.012 | 0.025 | 0.024 | 0.018 | 0.030 |
In the above table 1, the volume loss of the wear-resistant high-strength cermet material prepared in the embodiments 1 to 5 of the present invention is plotted in a table form, as shown in the following table 1:
chart 1 volume loss of wear-resistant high-strength cermet materials prepared in examples 1 to 5 of the present invention
As can be seen from the results in table 1 and table 1, the wear-resistant high-strength cermet materials prepared in embodiments 1 to 5 of the present invention have good wear resistance and wear resistance, can be used as wear-resistant materials in powder making systems in the industries such as electric power, cement, metallurgy, mine, etc., and have good strength, toughness, bending strength, mechanical properties and stability.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The wear-resistant high-strength cermet material is characterized by being prepared from the following raw materials in parts by weight: 12 to 20 parts of ferric oxide, 8 to 14 parts of silicon oxide, 6 to 16 parts of aluminum oxide, 10 to 20 parts of silicon nitride, 7 to 14 parts of magnesium boride, 11 to 18 parts of alloy powder, 3.2 to 3.8 parts of calcium carbonate whisker, 2.8 to 3.8 parts of red mud, 10.5 to 13.5 parts of polyacrylate and 2.2 to 3.2 parts of epoxy resin.
2. The wear-resistant high-strength cermet material according to claim 1, characterized in that it is prepared from the following raw materials in parts by weight: 16 parts of ferric oxide, 11 parts of silicon oxide, 11 parts of aluminum oxide, 15 parts of silicon nitride, 10.5 parts of magnesium boride, 14.5 parts of alloy powder, 3.5 parts of calcium carbonate whisker, 3.3 parts of red mud, 12.0 parts of polyacrylate and 2.7 parts of epoxy resin.
3. The wear-resistant high-strength cermet material according to claim 1, wherein the alloy powder comprises the following components in percentage by weight: 10 to 15 percent of titanium, 8 to 12 percent of iron, 3.5 to 4.5 percent of magnesium, 12 to 20 percent of aluminum, 0.5 to 1.0 percent of boron and the balance of silicon.
4. The wear-resistant high-strength cermet material according to claim 3, characterized in that the alloy powder comprises the following components: 12.5% of titanium, 10% of iron, 4.0% of magnesium, 16% of aluminum, 0.7% of boron and the balance of silicon.
5. The wear-resistant high-strength cermet material according to claim 1, wherein the calcium carbonate whiskers are 30 μm to 40 μm in length.
6. The wear-resistant high-strength cermet material according to claim 1, wherein the epoxy resin is any one of bisphenol F type epoxy resin, 4 '-dihydroxydiphenylsulfone diglycidyl ether epoxy resin, p-dimethyl terephthalate epoxy resin, N' -di-p-hydroxyhexa-ethylene diamine.
7. A preparation process of the wear-resistant high-strength cermet material according to any one of claims 1 to 6, characterized by comprising the following steps:
s1, weighing iron oxide, silicon oxide, aluminum oxide, silicon nitride, magnesium boride, alloy powder, calcium carbonate whiskers, red mud, polyacrylate and epoxy resin according to parts by weight for later use;
s2, mixing the alloy powder weighed in S1 with calcium carbonate whiskers, and grinding for 3.5-6.5 hours by using a grinder under the condition that the rotating speed is 1500-2500 rpm to obtain mixed powder;
s3, mixing and crushing the iron oxide, the silicon oxide, the aluminum oxide, the silicon nitride and the magnesium boride weighed in S1 into 80-100 meshes, adding the mixed powder in S2, crushing again, adding the red mud, the polyacrylate and the epoxy resin weighed in S1, shearing and dispersing for 30-60 minutes, and injecting into a mold for molding to obtain a prefabricated product;
presintering the preforms in S4 and S3 at the temperature of 450-550 ℃ for 30-45 minutes, heating to 1150-1350 ℃ for sintering for 50-60 minutes, cooling to 350-450 ℃ for heat preservation for 30 minutes, heating to 850-950 ℃ for sintering for 30-40 minutes, and cooling with a furnace to obtain the wear-resistant high-strength cermet material.
8. The process according to claim 7, wherein in S3, the regrinding is performed to 120-150 mesh.
9. The manufacturing process of claim 7, wherein in S3, in the mold forming process: the pressure is 8.5MPa to 14.5MPa, the temperature is 145 ℃ to 175 ℃, and the molding time is 2 hours to 3 hours.
10. The process according to claim 7, wherein in S4, the cooling rate is 0.5 ℃/min to 2.5 ℃/min.
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| CN110129692A (en) * | 2019-04-23 | 2019-08-16 | 自贡市希力数控工具有限公司 | A kind of cermet material |
| CN110373617A (en) * | 2019-08-24 | 2019-10-25 | 湖南长重机器股份有限公司 | A kind of metal ceramic wear-resisting material and preparation method thereof |
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Application publication date: 20200619 |