CN115572169A - Preparation process of boron carbide cylinder body - Google Patents
Preparation process of boron carbide cylinder body Download PDFInfo
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- CN115572169A CN115572169A CN202211095907.1A CN202211095907A CN115572169A CN 115572169 A CN115572169 A CN 115572169A CN 202211095907 A CN202211095907 A CN 202211095907A CN 115572169 A CN115572169 A CN 115572169A
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- 229910052580 B4C Inorganic materials 0.000 title claims abstract description 86
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 239000004816 latex Substances 0.000 claims abstract description 11
- 229920000126 latex Polymers 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 239000006188 syrup Substances 0.000 claims abstract description 10
- 235000020357 syrup Nutrition 0.000 claims abstract description 10
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 8
- 239000011734 sodium Substances 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 238000004321 preservation Methods 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 4
- IRDQNLLVRXMERV-UHFFFAOYSA-N CCCC[Na] Chemical compound CCCC[Na] IRDQNLLVRXMERV-UHFFFAOYSA-N 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 5
- 238000003756 stirring Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 8
- 229910052796 boron Inorganic materials 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/563—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on boron carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a preparation process of a boron carbide cylinder body, wherein the boron carbide cylinder body is composed of the following raw materials in parts by weight: 1000-1200 parts of boron trioxide, 1000-2000 parts of carbon, 90-100 parts of sodium butyl latex, 1000-1500 parts of No. 120 gasoline, 1000-1500 parts of boron carbide powder, 500-1000 parts of maltose syrup and 100-150 parts of sodium butyl latex, wherein impurities in the prepared boron carbide are completely removed, so that the secondary impurity removal effect is achieved, the purity is high when the boron carbide cylinder body is prepared, and in the heat treatment process, the method has a good heat treatment effect, the boron carbide cylinder body is slowly heated, the internal temperature and the external temperature of the boron carbide cylinder body are kept consistent, the boron carbide cylinder body is conveniently molded, the later-stage cooling is convenient, and the high temperature resistance and the wear resistance of the boron carbide cylinder body are improved.
Description
Technical Field
The invention relates to the field of boron carbide cylinder bodies, in particular to a preparation process of a boron carbide cylinder body.
Background
The boron carbide cylinder body has wide application range and is used for compressor cylinder bodies, ceramic pistons and the like, because the hardness of the boron carbide is lower than that of industrial diamond, but the boron carbide is higher than that of silicon carbide, compared with most ceramics, the boron carbide cylinder body has lower fragility, large thermal energy neutron capture cross section and strong chemical resistance, and is not corroded by thermal hydrogen fluoride and nitric acid. Soluble in molten base, insoluble in water and acid. The relative density is high, and the boiling point is 3500 ℃.
However, the existing boron carbide cylinder body preparation process has certain disadvantages to be improved, when boron carbide powder is prepared, boron carbide and carbon monoxide are obtained through the synthesis reaction of boron trioxide and carbon in an electric arc furnace, but the boron carbide synthesized by the method contains little free carbon and sometimes contains some free boron, so that the free boron is attached to the surface of the boron carbide, a certain amount of impurities are contained when the boron carbide cylinder body is prepared, and the stability of temperature control is poor when the boron carbide cylinder body mold is subjected to heat treatment, so that the formed boron carbide cylinder body cannot achieve the characteristics of high temperature resistance and high hardness, and after the boron carbide cylinder body is actually used, the boron carbide cylinder body is fast to wear and has poor high temperature resistance effect.
Disclosure of Invention
The invention mainly aims to provide a preparation process of a boron carbide cylinder body, which can effectively solve the technical problem of the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation process of a boron carbide cylinder body comprises the following raw materials in parts by weight: 1000-1200 parts of boron trioxide, 1000-2000 parts of carbon, 90-100 parts of sodium butyl latex, 1000-1500 parts of No. 120 gasoline, 1000-1500 parts of boron carbide powder, 500-1000 parts of maltose syrup and 100-150 parts of sodium butyl latex.
The preparation method of the boron carbide cylinder body comprises the following specific steps:
the method comprises the following steps: preparing raw materials, namely performing a synthesis reaction on 1000 parts of boron trioxide and 1500 parts of carbon in an arc furnace to obtain 1000 parts of boron carbide and 200 parts of carbon monoxide, wherein the formed chemical equation is as follows: 2B 2 O 3 +7C→B 4 C+6CO。
Step two: processing raw materials, namely taking 100 butyl sodium latex, cutting into small particles, putting the particles into No. 120 gasoline, sealing and soaking for a week, mixing 1000 boron carbide powder and 600 maltose syrup according to the weight ratio of 5;
step three: pre-finishing raw materials, namely, firstly, filling the boron carbide uniformly stirred in the step one into a stainless steel sieve of 80 meshes to be screened into granules, completely removing impurities in the prepared boron carbide, and finally pouring the boron carbide into a cylinder body mould;
step four: carrying out heat treatment, namely feeding the cylinder body die in the step two into an intermediate frequency sintering furnace for heating, starting the furnace, adjusting the power to 120kw/h for heating, wherein the heating time is 1 hour and 35 minutes, the temperature reaches 2200 ℃, the power of 120kw/h is ensured, the temperature in the furnace is kept when the temperature reaches 2200 ℃, the power is adjusted down by 10kw/h every 5 minutes, and the heat preservation time is 20 minutes;
step five: and (3) pressurizing and cooling, namely pressurizing the cylinder body mould in the third step after heat preservation, pressurizing the medium-frequency sintering furnace through a remote control valve, uniformly pressurizing to 10MPa 10 minutes before pressurization, uniformly pressurizing to 15MPa 5 minutes later, maintaining the pressure for 5 minutes in the whole pressurizing process, finally shutting down the machine, wherein the whole pressing time is about 20 minutes, and finally cooling and forming the cylinder body mould through circulating water.
As a further scheme of the present invention, in the first step, the generated carbon monoxide is poured into a furnace for ignition, and then carbon dioxide is obtained, and the formed chemical equation is: 2CO O 2 Ignition → 2CO 2 The resulting boron carbide was then filtered through sulfuric acid.
In a further embodiment of the present invention, in the second step, the boron carbide powder and the maltose syrup are mixed in a weight ratio of 5.
As a further scheme of the invention, in the third step, the boron carbide is filled and sieved into granules by a stainless steel sieve with 80 meshes, and the sieving time is 30-40 minutes.
As a further scheme of the invention, in the fourth step, after the temperature of the sintering furnace reaches 2200 ℃, the temperature inside the sintering furnace is stabilized through a voltage stabilizer;
in the fifth step, the temperature of the circulating water is 0-5 ℃, and the cooling is carried out for 10 minutes.
Compared with the prior art, the invention has the following beneficial effects:
the preparation process of the boron carbide cylinder body comprises the steps of carrying out synthetic reaction in a boron trioxide and carbon arc furnace to obtain boron carbide and carbon monoxide, wherein less free boron is not reacted during the reaction, so that the free boron is attached to the surface of the boron carbide, feeding the boron carbide into sulfuric acid, dissolving the free boron in the sulfuric acid, and the boron carbide does not react with the sulfuric acid, thereby improving the purity of the whole boron carbide, sieving the boron carbide into granules by using an 80-mesh stainless steel sieve during pretreatment, removing impurities in the prepared boron carbide completely, thereby achieving the effect of secondary impurity removal, and further having high purity during the preparation of the boron carbide cylinder body, and effectively controlling a sintering furnace during heat treatment, the method is characterized in that a sintering furnace is heated, the power is adjusted to 120kw/h, the heating time is 1 hour and 35 minutes, after the temperature reaches, the temperature inside the sintering furnace is stabilized through a voltage stabilizer, so that the sintering furnace is more stable, the temperature reaches 2200 ℃, the power of 120kw/h is guaranteed, the temperature in the furnace starts to be kept when the temperature reaches 2200 ℃, the power is adjusted down by 10kw/h every 5 minutes, and the heat preservation time is 20 minutes.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.
Example one
A preparation process of a boron carbide cylinder body comprises the following raw materials in parts by weight: 1000-1200 parts of boron trioxide, 1000-2000 parts of carbon, 90-100 parts of sodium butyl latex, 1000-1500 parts of No. 120 gasoline, 1000-1500 parts of boron carbide powder, 500-1000 parts of maltose syrup and 100-150 parts of sodium butyl latex.
The preparation method of the boron carbide cylinder body comprises the following specific steps:
the method comprises the following steps: preparing raw materials, namely performing synthetic reaction on 1000 parts of boron trioxide and 1500 parts of carbon in an arc furnace to obtain 1000 parts of boron carbide and 200 parts of carbon monoxide, wherein the formed chemical equation is as follows: 2B 2 O 3 +7C→B 4 C+6CO。
Step two: processing raw materials, namely taking 100 butyl sodium latex, cutting into small particles, putting the particles into No. 120 gasoline, sealing and soaking for a week, mixing 1000 boron carbide powder and 600 maltose syrup according to the weight ratio of 5;
step three: pre-finishing raw materials, namely, firstly, filling the boron carbide uniformly stirred in the step one into a stainless steel sieve of 80 meshes to be screened into granules, completely removing impurities in the prepared boron carbide, and finally pouring the boron carbide into a cylinder body mould;
step four: carrying out heat treatment, namely feeding the cylinder body die in the step two into an intermediate frequency sintering furnace for heating, starting the furnace, adjusting the power to 120kw/h for heating, wherein the heating time is 1 hour and 35 minutes, the temperature reaches 2200 ℃, the power of 120kw/h is ensured, the temperature in the furnace is kept when the temperature reaches 2200 ℃, the power is adjusted down by 10kw/h every 5 minutes, and the heat preservation time is 20 minutes;
step five: and (2) pressurizing and cooling, namely pressurizing the cylinder body mould in the third step after heat preservation, pressurizing the intermediate frequency sintering furnace through a remote control valve, uniformly pressurizing to 10MPa in 10 minutes before pressurization, maintaining the uniform pressurization to 15MPa in 5 minutes, maintaining the pressure for 5 minutes in the whole pressurizing process for about 15 minutes, stopping the machine, keeping the whole pressing time for about 20 minutes, and finally cooling and molding the cylinder body mould through circulating water.
In the first step, the generated carbon monoxide is poured into a furnace to be ignited, so that carbon dioxide is obtained, and the formed chemical equation is as follows: 2CO2 is ignited → 2CO2, and the generated boron carbide is filtered by sulfuric acid.
In the second step, the boron carbide powder and the maltose syrup are mixed according to the weight ratio of 5.
In the third step, the boron carbide is put into the container and sieved into granules by a stainless steel sieve with 80 meshes, and the sieving time is 30-40 minutes.
In the fourth step, after the temperature of the sintering furnace reaches 2200 ℃, the temperature in the sintering furnace is stabilized through a voltage stabilizer.
In the fifth step, the temperature of the circulating water is 0-5 ℃, and the cooling is carried out for 10 minutes.
According to the preparation process of the boron carbide cylinder body, boron carbide and carbon monoxide are obtained through a synthetic reaction in a diboron trioxide and carbon arc furnace, during the reaction, less free boron is not reacted, so that the free boron is attached to the surface of the boron carbide, the boron carbide is fed into sulfuric acid, the free boron is dissolved in the sulfuric acid, and the boron carbide is not reacted with the sulfuric acid, so that the purity of the whole boron carbide is improved, the boron carbide is screened into particles through an 80-mesh stainless steel sieve during pretreatment, impurities in the prepared boron carbide are removed completely, and a secondary impurity removal effect is achieved, so that the purity is high when the boron carbide cylinder body is manufactured, and during heat treatment, the sintering furnace is heated through effective control of the sintering furnace, the power is adjusted to 120kw/h for heating for 1 hour 35 minutes, after the temperature reaches, the temperature inside the sintering furnace is stabilized through a voltage stabilizer, so that the stability of the sintering furnace is more stable, the temperature reaches 2200 ℃ for ensuring the power of 120kw/h, the temperature in the furnace starts to 2200 ℃, the heat preservation power is adjusted to 10 min every 5 minutes, the heat preservation time is adjusted to be 10/h, the temperature is adjusted to be equal, the temperature of the cylinder body is kept, the cylinder body is convenient for heat treatment, the heat preservation, the heat treatment, the temperature is kept to be stable, the temperature is kept to be consistent, and the cylinder body is kept, the temperature of the cylinder body is kept, and the cylinder body is convenient for the post-resistant, the post-forming, and the cylinder body is convenient for the post-forming method, the post-forming, the high-resistant boron carbide.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A preparation process of a boron carbide cylinder body is characterized by comprising the following steps: the boron carbide cylinder body is composed of the following raw materials in parts by weight: 1000-1200 parts of boron trioxide, 1000-2000 parts of carbon, 90-100 parts of sodium butyl latex, 1000-1500 parts of No. 120 gasoline, 1000-1500 parts of boron carbide powder, 500-1000 parts of maltose syrup and 100-150 parts of sodium butyl latex.
The preparation method of the boron carbide cylinder body comprises the following specific steps:
the method comprises the following steps: preparing raw materials, namely performing synthetic reaction on 1000 parts of boron trioxide and 1500 parts of carbon in an arc furnace to obtain 1000 parts of boron carbide and 200 parts of carbon monoxide, wherein the formed chemical equation is as follows: 2B 2 O 3 +7C→B 4 C+6CO。
Step two: processing raw materials, namely taking 100 butyl sodium latex, cutting into small particles, putting the particles into No. 120 gasoline, sealing and soaking for a week, mixing 1000 boron carbide powder and 600 maltose syrup according to the weight ratio of 5;
step three: pre-finishing raw materials, namely, firstly, filling the boron carbide uniformly stirred in the step one into a stainless steel sieve of 80 meshes to be screened into granules, completely removing impurities in the prepared boron carbide, and finally pouring the boron carbide into a cylinder body mould;
step four: carrying out heat treatment, namely feeding the cylinder body die in the step two into an intermediate frequency sintering furnace for heating, starting the furnace, adjusting the power to 120kw/h for heating, wherein the heating time is 1 hour and 35 minutes, the temperature reaches 2200 ℃, the power of 120kw/h is ensured, the temperature in the furnace is kept when the temperature reaches 2200 ℃, the power is adjusted down by 10kw/h every 5 minutes, and the heat preservation time is 20 minutes;
step five: and (3) pressurizing and cooling, namely pressurizing the cylinder body mould in the third step after heat preservation, pressurizing the medium-frequency sintering furnace through a remote control valve, uniformly pressurizing to 10MPa 10 minutes before pressurization, uniformly pressurizing to 15MPa 5 minutes later, maintaining the pressure for 5 minutes in the whole pressurizing process, finally shutting down the machine, wherein the whole pressing time is about 20 minutes, and finally cooling and forming the cylinder body mould through circulating water.
2. The process for preparing a boron carbide cylinder block according to claim 1, wherein: in the first step, the generated carbon monoxide is poured into a furnace to be ignited, so that carbon dioxide is obtained, and the formed chemical equation is as follows: 2CO2 is ignited → 2CO2, and the generated boron carbide is filtered by sulfuric acid.
3. The process for preparing a boron carbide cylinder block according to claim 1, wherein: in the second step, the boron carbide powder and the maltose syrup are mixed according to the weight ratio of 5 to be stirred, and the stirring time is 2-3 hours.
4. The process for preparing a boron carbide cylinder block according to claim 1, wherein: in the third step, the boron carbide is put into the container and sieved into particles by a stainless steel sieve of 80 meshes, and the sieving time is 30-40 minutes.
5. The process for preparing a boron carbide cylinder block according to claim 1, wherein: in the fourth step, after the temperature of the sintering furnace reaches 2200 ℃, the temperature in the sintering furnace is stabilized through a voltage stabilizer.
6. The process for preparing a boron carbide cylinder block according to claim 1, wherein: in the fifth step, the temperature of the circulating water is 0-5 ℃, and the cooling is carried out for 10 minutes.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329896A (en) * | 2015-11-19 | 2016-02-17 | 桐城市明丽碳化硼制品有限公司 | Novel process for preparing boron carbide and boron carbide elements |
| CN106396715A (en) * | 2016-08-26 | 2017-02-15 | 桐城市明丽碳化硼制品有限公司 | High-performance boron carbide ceramic nozzle |
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- 2022-09-06 CN CN202211095907.1A patent/CN115572169A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329896A (en) * | 2015-11-19 | 2016-02-17 | 桐城市明丽碳化硼制品有限公司 | Novel process for preparing boron carbide and boron carbide elements |
| CN106396715A (en) * | 2016-08-26 | 2017-02-15 | 桐城市明丽碳化硼制品有限公司 | High-performance boron carbide ceramic nozzle |
Non-Patent Citations (1)
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| 陶连印, 成都科技大学出版社 * |
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