CN116854476A - Titanium carbide aluminum-based ceramic side sealing plate for thin strip continuous casting and preparation method thereof - Google Patents
Titanium carbide aluminum-based ceramic side sealing plate for thin strip continuous casting and preparation method thereof Download PDFInfo
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- 238000007789 sealing Methods 0.000 title claims abstract description 53
- 239000000919 ceramic Substances 0.000 title claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 30
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000009749 continuous casting Methods 0.000 title claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 71
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 24
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 12
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000010936 titanium Substances 0.000 claims description 17
- 239000010431 corundum Substances 0.000 claims description 11
- 229910052593 corundum Inorganic materials 0.000 claims description 11
- 238000007731 hot pressing Methods 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 11
- 238000000498 ball milling Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000002612 dispersion medium Substances 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 5
- 238000000875 high-speed ball milling Methods 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 2
- 239000013535 sea water Substances 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 238000003809 water extraction Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910020068 MgAl Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 northeast university Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- 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
- C04B35/5607—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 refractory metal carbides
- C04B35/5611—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 refractory metal carbides based on titanium carbides
- C04B35/5618—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 refractory metal carbides based on titanium carbides based on titanium aluminium carbides
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Abstract
The invention belongs to the technical field of high-temperature ceramics, and relates to a titanium carbide aluminum-based ceramic side sealing plate for strip continuous casting and a preparation method thereof. The related titanium carbide aluminum-based ceramic side sealing plate for the continuous casting of the thin strip comprises the following raw materials: titanium carbide powder, metal aluminum powder, metal titanium powder, electrofused magnesia micropowder, electrofused alumina micropowder and silicon carbide micropowder; the granularity of the raw materials is less than 10 mu m; wherein the adding amount of the titanium carbide powder, the metal aluminum powder and the metal titanium powder is 70-80 wt%; the addition amount of the electric smelting magnesia micro powder is 2 to 5 weight percent, the addition amount of the electric smelting alumina micro powder is 10 to 20 weight percent, and the addition amount of the silicon carbide micro powder is 3 to 8 weight percent. The invention has the advantages of dual performances of metal and ceramic, and has the toughness of metal and the comprehensive performances of high temperature resistance, oxidation resistance and corrosion resistance of ceramic.
Description
Technical Field
The invention belongs to the technical field of high-temperature ceramics, and particularly relates to a titanium carbide aluminum-based ceramic side sealing plate for strip continuous casting and a preparation method thereof.
Background
The thin strip continuous casting and rolling process is simpler and more efficient, has obvious energy-saving and emission-reducing effects, is a typical green manufacturing technology of steel, is widely concerned and highly valued internationally, and emerges as a batch of industrial technology developers and practitioners such as Newcoxib, new japanese iron, thekinoform, purship, bao steel, northeast university, sand steel and the like, breaks through industrial key technologies, and realizes the preliminary application of the thin strip continuous casting and rolling technology in the steel industry. The thin strip continuous casting side seal technology is one of key technologies for restricting the application and development of twin-roll thin strip continuous casting and rolling, and the side seal plate is the core of the side seal technology, and mainly has the functions of forming a molten pool by matching with a casting roll, preventing molten steel side leakage, bearing mechanical stress due to being pressed on the casting roll, being corroded due to contact with molten steel, being worn due to contact with the casting roll and a primary blank shell, and being subjected to thermal shock when being in primary contact with the molten steel, so that the side seal plate is required to have good thermal shock resistance, molten steel corrosion resistance and high-temperature wear resistance.
The side sealing plate material is subjected to fused quartz, carbon, zirconium, boron nitride-based ceramics and the like, and the current BN-ZrO 2 The SiC hot-pressed ceramic side sealing plate has become the mainstream, and can better meet the thermal shock resistance, erosion resistance and frictional wear resistance; the flaky structure of the h-BN crystal grains can easily form a card house structure in the sintering process, so that the material is difficult to sinter and densify, and the sintering cost is high; the BN base side sealing plate is volatilized rapidly after oxidation, which also causes the insufficient corrosion resistance of molten steel, especially the friction and abrasion of the primary solidified shell to the BN base side sealing plate is the key point of side sealing plate damage, because the primary solidified shell temperature is more than 1000 ℃, and the BN is oxidizedThe abrasion resistance and wear resistance of the rear part are rapidly reduced, and particularly the lubricity of BN in the area cannot be exerted, so that the side sealing plates are worn and fail, and the side sealing plates are related to a large amount of BN in the side sealing plates; therefore, a high-performance low-cost side sealing plate can further promote better and faster development of thin strip continuous casting.
Disclosure of Invention
The invention aims to provide a titanium carbide aluminum-based ceramic side sealing plate for continuous casting of a thin strip and a preparation method thereof, so that the preparation cost of the side sealing plate can be reduced, the problem of insufficient friction and abrasion resistance of an initial green body shell of the side sealing plate is solved, and the service requirements of molten steel erosion resistance, molten steel thermal shock resistance and friction and abrasion resistance of the side sealing plate are met during continuous casting of the thin strip.
The invention adopts the following technical scheme to accomplish the purpose:
the titanium carbide aluminum-based ceramic side sealing plate for thin strip continuous casting comprises the following raw materials: titanium carbide powder, metal aluminum powder, metal titanium powder, electrofused magnesia micropowder, electrofused alumina micropowder and silicon carbide micropowder; the granularity of the raw materials is less than 10 mu m; wherein, the adding amount of the titanium carbide powder, the metal aluminum powder and the metal titanium powder is 70 wt-80 wt%; the addition amount of the electric smelting magnesia micro powder is 2 to 5 weight percent, the addition amount of the electric smelting alumina micro powder is 10 to 20 weight percent, and the addition amount of the silicon carbide micro powder is 3 to 8 weight percent.
The purity of the titanium carbide powder, the metal aluminum powder and the metal titanium powder is more than or equal to 99.5 percent, and the molar ratio of the three powders is 2.0:1.1:1.
the electro-fused magnesia micro powder is prepared by sea water extraction, the purity is more than or equal to 99.5 percent, the purity of electro-fused alumina is more than or equal to 99.5 percent, and the purity of silicon carbide micro powder is more than or equal to 99.0 percent.
The preparation method of the titanium carbide aluminum-based ceramic side sealing plate for strip continuous casting comprises the following steps: putting powder, a water reducer and high-purity corundum balls into a polyurethane ball milling tank together according to the proportion, and pouring high-purity absolute ethyl alcohol serving as a dispersion medium, wherein the solid powder is prepared from the following components: water reducing agent: corundum ball: the mass ratio of the ethanol is 1:0.01:3:1, a step of; loading the ball milling tank into a planetary ball mill, setting the rotating speed to be 150r/min, and carrying out high-speed ball milling for 2-5 h to obtain uniformly mixed fine particle slurry; tray for slurryPlacing the powder into a blast drying oven for drying after the powder is contained, sieving the powder with a 80-mesh sieve (aperture is 0.2 mm) after the powder is thoroughly dried, and collecting and sealing the powder for storage; pouring the powder into a side sealing plate hot-pressing carbon fiber mold, placing into a vacuum hot-pressing furnace for roasting, and setting a sintering process, namely, preserving heat and maintaining pressure for 1-3h under the conditions of 1280-1350 ℃ and nitrogen atmosphere and pressure of 20-30 MPa. Then the temperature is raised to 1400-1500 ℃, the temperature is kept for 1-2 hours under the vacuum condition and the pressure is 20-30MPa, then the sample is cooled to the room temperature along with the furnace, and the sample is taken out for subsequent processing, thus obtaining Ti 3 AlC 2 And (5) a base ceramic side sealing plate.
The invention provides a titanium carbide aluminum-based ceramic side sealing plate for strip continuous casting, wherein introduced powder reacts in a hot pressing furnace as follows to form 2TiC+Al+Ti=Ti 3 AlC 2 ，MgO + Al 2 O 3 = MgAl 2 O 4 The method comprises the steps of carrying out a first treatment on the surface of the The reaction forms a large amount of Ti 3 AlC 2 And a small amount of MgAl 2 O 4 Form Ti 3 AlC 2 Base ceramic material, ti 3 AlC 2 Belongs to a ternary lamellar compound MAX phase, has a unique crystal structure, and has the advantages of dual performances of metal and ceramic, the toughness of the metal, the comprehensive performances of high temperature resistance, oxidation resistance and corrosion resistance of the ceramic, and other characteristics such as excellent self-lubricating performance and damage self-repairing performance of an oxidation environment; spinel and corundum formed in the sintering process of the titanium carbide aluminum-based ceramic side sealing plate are favorable for increasing the structural strength of the side sealing plate and improving the wear resistance, and are also favorable for improving the molten steel erosion resistance of a molten pool area of the side sealing plate; the spinel can be used for fixing FeO and other strong corrosive substances in molten steel; siC as control Ti 3 AlC 2 Hardness is improved so as to improve the friction and wear resistance of the casting rolls;
ti according to the invention 3 AlC 2 Compared with BN, has similar lubricating property, lower temperature of casting roller area and Ti 3 AlC 2 The lubricating property of the cast roller can fully ensure the safe operation of the side end of the cast roller without oxidation, and the oxidation resistance of the cast roller is better than BN even in other high temperature areasThe sintering temperature of the powder is low, the sintering temperature can be obviously reduced, the BN is difficult to sinter due to the scale card house structure, and the Ti of the invention 3 AlC 2 The base ceramic side sealing plate does not contain ZrO 2 Avoiding ZrO in a molten pool working layer of the BN-based ceramic side sealing plate 2 Liquid phase sintering to grow up to form slag mass.
Ti according to the invention 3 AlC 2 After the base side sealing plate is corroded by the primary solidification shell, tiO can be formed on the working surface 2 Al and 2 O 3 the ceramic film, in particular both, may also react further to form Al 2 TiO 5 ，Al 2 TiO 5 Also belonging to refractory phases, while Al 2 O 3 Can be further dissolved into spinel system, thus Ti 3 AlC 2 The oxidized substance matrix has good bonding performance, excellent erosion resistance and wear resistance, compared with B formed by BN base side sealing plates 2 O 3 The liquid film greatly improves the friction and abrasion resistance, and further improves the service life of the existing side sealing plates, so that the service life of the side sealing plates is prolonged from the existing 6 furnaces to 8 furnaces or more.
Description of the embodiments
The invention will be described in detail with reference to specific examples:
examples
The titanium carbide aluminum-based ceramic side sealing plate comprises the following components in percentage by mass: titanium carbide powder, metal aluminum powder and metal titanium powder are 70 percent (the molar ratio of the three powders is 2.0:1.1:1), and the electrofused magnesia micro powder is 5 percent, the electrofused alumina micro powder is 20 percent and the silicon carbide micro powder is 5 percent. Putting powder, a water reducer and high-purity corundum balls into a polyurethane ball milling tank together according to the proportion, and pouring high-purity absolute ethyl alcohol serving as a dispersion medium, wherein the solid powder is prepared from the following components: dispersing agent: corundum ball: the mass ratio of the ethanol is 1:0.01:3:1. and (3) loading the ball milling tank into a planetary ball mill, setting the rotating speed to be 150r/min, and performing high-speed ball milling for 5 hours to obtain uniformly mixed fine particle slurry. The slurry is placed into a blast drying oven for drying after being contained by a tray, and after the powder is thoroughly dried, the powder is sieved by a 80-mesh sieve (the aperture is 0.2 mm), and then the powder is collected and stored in a sealing way. Pouring the powder into a carbon fiber hot-pressing mold of a side sealing platePlacing the mixture into a vacuum hot pressing furnace for roasting, and setting a sintering process, namely, preserving heat and pressure for 1h under the conditions of 1350 ℃ and nitrogen atmosphere and 30 MPa. Then raising the temperature to 1400 ℃, keeping the temperature and pressure for 2 hours under the vacuum condition and the pressure of 30MPa, then taking out the sample for subsequent processing after the sample is cooled to the room temperature along with the furnace, thus obtaining Ti 3 AlC 2 And (5) a base ceramic side sealing plate.
Examples
Ti (titanium) 3 AlC 2 The base ceramic side sealing plate comprises the following components in percentage by mass: titanium carbide powder, metal aluminum powder and metal titanium powder are added up to 80 percent (the molar ratio of the three powders is 2.0:1.1:1), and the electrofused magnesia micro powder is 2 percent, the electrofused alumina micro powder is 10 percent and the silicon carbide micro powder is 8 percent. Putting powder, a water reducer and high-purity corundum balls into a polyurethane ball milling tank together according to the proportion, and pouring high-purity absolute ethyl alcohol serving as a dispersion medium, wherein the solid powder is prepared from the following components: dispersing agent: corundum ball: the mass ratio of the ethanol is 1:0.01:3:1. and (3) loading the ball milling tank into a planetary ball mill, setting the rotating speed to be 150r/min, and carrying out high-speed ball milling for 3 hours to obtain the uniformly mixed fine particle slurry. The slurry is placed into a blast drying oven for drying after being contained by a tray, and after the powder is thoroughly dried, the powder is sieved by a 80-mesh sieve (the aperture is 0.2 mm), and then the powder is collected and stored in a sealing way. Pouring the powder into a side sealing plate hot-pressing carbon fiber mold, placing into a vacuum hot-pressing furnace for roasting, and setting a sintering process, namely, preserving heat and pressure for 1h under the conditions of 1280 ℃ and nitrogen atmosphere and 30 MPa. Then raising the temperature to 1500 ℃, keeping the temperature and the pressure for 1h under the vacuum condition and the pressure of 20MPa, then taking out the sample for subsequent processing after the sample is cooled to the room temperature along with the furnace, thus obtaining Ti 3 AlC 2 And (5) a base ceramic side sealing plate.
Examples
Ti (titanium) 3 AlC 2 The base ceramic side sealing plate comprises the following components in percentage by mass: titanium carbide powder, metal aluminum powder and metal titanium powder are 78% (the molar ratio of the three powders is 2.0:1.1:1), and the electrofused magnesia micro powder is 3%, the electrofused alumina micro powder is 16% and the silicon carbide micro powder is 3%. Powder, water reducer and high purity corundum ball are put into a polyurethane ball milling tank together according to the proportion,and pouring high-purity absolute ethyl alcohol as a dispersion medium, wherein the solid powder is prepared by the following steps: dispersing agent: corundum ball: the mass ratio of the ethanol is 1:0.01:3:1. and (3) loading the ball milling tank into a planetary ball mill, setting the rotating speed to be 150r/min, and carrying out high-speed ball milling for 2 hours to obtain uniformly mixed fine particle slurry. The slurry is placed into a blast drying oven for drying after being contained by a tray, and after the powder is thoroughly dried, the powder is sieved by a 80-mesh sieve (the aperture is 0.2 mm), and then the powder is collected and stored in a sealing way. And pouring the powder into a side sealing plate hot-pressing carbon fiber die, putting into a vacuum hot-pressing furnace for roasting, and setting a sintering process, namely, preserving heat and pressure for 2 hours under the conditions of 1300 ℃ and nitrogen atmosphere and 25 MPa. Then the temperature is raised to 1450 ℃, the heat preservation and the pressure maintaining are carried out for 1.5 hours under the vacuum condition and the pressure of 25MPa, then the sample is cooled to the room temperature along with the furnace, and the sample is taken out for subsequent processing, thus obtaining Ti 3 AlC 2 And (5) a base ceramic side sealing plate.
Claims (4)
1. A titanium carbide aluminum-based ceramic side sealing plate for strip continuous casting is characterized in that: ti (Ti) 3 AlC 2 The raw materials of the base ceramic side sealing plate comprise: titanium carbide powder, metal aluminum powder, metal titanium powder, electrofused magnesia micropowder, electrofused alumina micropowder and silicon carbide micropowder; the granularity of the raw materials is less than 10 mu m; wherein the adding amount of the titanium carbide powder, the metal aluminum powder and the metal titanium powder is 70-80 wt%; the addition amount of the electric smelting magnesia micro powder is 2 to 5 weight percent, the addition amount of the electric smelting alumina micro powder is 10 to 20 weight percent, and the addition amount of the silicon carbide micro powder is 3 to 8 weight percent.
2. A titanium carbide aluminum-based ceramic side sealing plate for strip continuous casting is characterized in that: the purity of the titanium carbide powder, the metal aluminum powder and the metal titanium powder is more than or equal to 99.5 percent, and the molar ratio of the three powders is 2.0:1.1:1.
3. a titanium carbide aluminum-based ceramic side sealing plate for strip continuous casting is characterized in that: the electro-fused magnesia micro powder is prepared by sea water extraction, the purity is more than or equal to 99.5 percent, the purity of electro-fused alumina is more than or equal to 99.5 percent, and the purity of silicon carbide micro powder is more than or equal to 99.0 percent.
4. A method for preparing the titanium carbide aluminum-based ceramic side sealing plate for continuous casting of thin strips according to any one of claims 1 to 3, which is characterized in that: putting powder, a water reducer and high-purity corundum balls into a polyurethane ball milling tank together according to the proportion, and pouring high-purity absolute ethyl alcohol serving as a dispersion medium, wherein the solid powder is prepared from the following components: water reducing agent: corundum ball: the mass ratio of the ethanol is 1:0.01:3:1, a step of; loading the ball milling tank into a planetary ball mill, setting the rotating speed to be 150r/min, and carrying out high-speed ball milling for 2-5 h to obtain uniformly mixed fine particle slurry; placing the slurry into a blast drying oven for drying after the slurry is contained by a tray, sieving with a 80-mesh sieve after the powder is thoroughly dried, and then collecting and sealing the powder for storage; pouring the powder into a side sealing plate hot-pressing carbon fiber mold, placing into a vacuum hot-pressing furnace for roasting, and setting a sintering process, namely, preserving heat and maintaining pressure for 1-3h under the conditions of 1280-1350 ℃ and nitrogen atmosphere and pressure of 20-30 MPa. Then the temperature is raised to 1400-1500 ℃, the heat preservation and pressure maintaining are carried out for 1-2 hours under the vacuum condition and the pressure of 20-30MPa, then the sample is cooled to the room temperature along with the furnace, and the sample is taken out for subsequent processing, thus obtaining the titanium carbide aluminum-based ceramic side sealing plate.
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| KR20000039372A (en) * | 1998-12-12 | 2000-07-05 | 이구택 | Refractory composition for side dam of strip casting apparatus |
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| CN105198445A (en) * | 2015-10-21 | 2015-12-30 | 哈尔滨工业大学 | Boron nitride multi-phase ceramic side sealing plate and preparation method thereof |
| CN115947610A (en) * | 2023-02-06 | 2023-04-11 | 中钢集团洛阳耐火材料研究院有限公司 | Multi-layer composite side sealing plate for twin-roll thin-strip continuous casting and preparation method thereof |
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| KR20000039372A (en) * | 1998-12-12 | 2000-07-05 | 이구택 | Refractory composition for side dam of strip casting apparatus |
| CN1589991A (en) * | 2003-08-27 | 2005-03-09 | 上海宝钢集团公司 | Aluminium zirconium carbon-boron nitride composite lateral sealing plate and its manufacturing method |
| CN1944337A (en) * | 2006-11-07 | 2007-04-11 | 北京交通大学 | Atmospheric synthetic method for high purity titamum aluminum carbide ceramic powder |
| KR100977448B1 (en) * | 2010-05-12 | 2010-08-24 | (주) 화인테크 | A base plate composition for side dam in twin-roll strip caster |
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