CN102898154B - Silicon carbide sliding plate and manufacturing method thereof - Google Patents
Silicon carbide sliding plate and manufacturing method thereof Download PDFInfo
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- CN102898154B CN102898154B CN201110217437.7A CN201110217437A CN102898154B CN 102898154 B CN102898154 B CN 102898154B CN 201110217437 A CN201110217437 A CN 201110217437A CN 102898154 B CN102898154 B CN 102898154B
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Abstract
The invention relates to a silicon carbide sliding plate and a manufacturing method thereof. The silicon carbide sliding plate comprises the following components, by mass, 15-25% of silicon carbide with a particle size of 3-5 mm, 30-40% of silicon carbide with a particle size of 1-3 mm, 10-20% of alumina particles with a particle size of not more than 1 mm, 10-16% of alumina powder with a particle size of not more than 325 mesh, 8-16% of a carbon material, 3-7% of an antioxidant, and 4-7% of a binding agent. According to the present invention, characteristics of good high temperature resistance, excellent shock resistance and excellent erosion resistance of the silicon carbide material are utilized, an alumina material is concurrently introduced to achieve sliding plate reaction sintering under a high temperature condition, and antioxidant addition can be provided for filling internal gaps of the sliding plate so as to improve bulk density and strength of the sliding plate, such that antioxidant property of the sliding plate is improved.
Description
Technical field
The invention belongs to functional refractory technical field, relate in particular to a kind of silicon carbide slide plate and preparation method thereof.
Background technology
Slide gate nozzle is continuous casting functional refractory, is the vitals of steel-making continuous casting equipment and the valve of controlling molten steel outflow, has and can accurately control the many advantages such as molten steel flow speed, flow, therefore, in the continuous casting working procedure of world iron and steel enterprise, is used widely.Slide plate working conditions requires it to have higher hot strength, good thermal shock resistance and good antioxidant property, scour resistance.
The development that Iron and Steel Enterprises in China experiences decades, steel ladle sliding water gap has become one of important process technical renovation of Iron And Steel Industry fast development, domestic most ladle, tundish have all possessed slide gate nozzle system, slide gate nozzle has become the essential functional refractory materials of STEELMAKING PRODUCTION, along with China and world steel industrial expansion, the demand of slide gate nozzle obtains larger development space, and it is essential that the application of high-performance, long lifetime slide gate nozzle and demand become.
For adapting to working conditions and user's requirements such as controlling molten steel flow speed, through the analysis to original slide plate, causing slide plate low subject matter in work-ing life is that slide brick pulls frequently when controlling molten steel flow speed, add high temperature and surging force, the centre hole reaming of slide brick is too fast, cause slide plate repeatedly not use continuously, affect work-ing life.Because slide plate working conditions is harsh, at aspects such as performance index, size and working accuracy, quality stability, there is very high requirement.To the performance requriements of slide plate, be to there is good hot strength, abrasion resistance, heat-shock resistance, slag resistance, antistripping, and the selection of slide plate material and composition design are to affect slide plate performance and the most basic factor of result of use, for improving safety and reliability and the access times of slide plate, the material of slide plate starts application with regard to optimizing and developing always from it, mostly uses at present embedded with zirconia aluminum-carbon sliding.
Summary of the invention
The object of the present invention is to provide a kind of silicon carbide slide plate and preparation method thereof, utilize carbofrax material resistance to elevated temperatures good, the feature of anti-seismic performance and erosion-resisting characteristics excellence, replaces embedded with zirconia aluminum-carbon sliding.
For achieving the above object, technical scheme of the present invention is:
A kind of silicon carbide slide plate, its composition quality per-cent is: carborundum granularity 3～5mm15～25%, granularity 1～3mm 30～40%, alumina particle, granularity is not more than 1mm 10～20%, aluminum oxide powder granularity is not more than 325 orders 10～16%, carbon materials 8～16%, oxidation inhibitor 3～7%, additional bonding agent 4～7%, the addition of bonding agent is for pressing the percentage composition of aforementioned composition total.
Further, in described silicon carbide, SiC quality percentage composition is not less than 96%.
Again, described alumina particle comprises alumine, brown corundum, sub-white corundum, white fused alumina, in plate diamond spar more than one, Al in alumine wherein
2o
3quality percentage composition is not less than 88%, Al in brown corundum and sub-white corundum
2o
3quality percentage composition is not less than 91%, Al in white fused alumina and plate diamond spar
2o
3quality percentage composition is not less than 96%.
Described aluminum oxide powder is white fused alumina, plate diamond spar, in activated alumina more than one.
Described carbon materials comprises graphite, coke, in carbon black more than one, granularity is not more than 325 orders.
Described oxidation inhibitor be in metallic silicon power and aluminium powder more than one.
Described bonding agent comprises in coal tar, pitch, resol, silicone resin more than one.
Carbofrax material has strong covalent bonds characteristic, gives it and has satisfactory stability; Have simultaneously and be only second to adamantine hardness, give its good wear resistance, there is higher hot strength, high heat conductance, the low coefficient of expansion and good thermal shock resistance simultaneously, it is become there is excellent high-temperature behavior, low bulk, wear-resistant, corrosion resistant refractory materials.
The preparation method of silicon carbide slide plate of the present invention, by said ratio, first the powder in raw material is carried out to premix and make powder mix, by the order of addition(of ingredients) of particle → bonding agent → powder mix, mix again, mechanical pressing after ageing mixture, adobe is burnt till after drying in 1350 ℃～1450 ℃ reducing atmospheres, and in reducing atmosphere, the concentration of oxygen is lower than the concentration of carbon monoxide.
Beneficial effect of the present invention:
Silicon carbide slide plate weave construction prepared by the present invention is fine and close, wear resisting property and antioxidant property are good, and there is the features such as intensity is high, anti-erosion, antiscour, good thermal shock stability, life-span length, well solved the not resistance to erosion of original slide plate, the poor problem of thermal shock resistance, the access times of slide plate are brought up to 4～5 times by 1～2 time.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
The raw material adopting in the present embodiment and quality percentage composition are: 3～5mm silicon carbide, 25%, 1～3mm silicon carbide 30%, is not more than 1mm alumine particle 20%, be not more than 325 order white alundum powders 10%, graphite 8%, silica flour 3%, aluminium powder 4%, additional phenolic resin binder 7%.
Preparation process is: first by white alundum powder, graphite, silica flour, aluminium powder carries out premix and makes powder mix, again silicon-carbide particle, alumine particle are mixed with resol, then add powder mix to mix thoroughly, mechanical pressing after ageing mixture, brick bat drying burns till and makes silicon carbide slide plate by 1450 ℃ of reducing atmospheres.
Embodiment 2
The raw material adopting in the present embodiment and quality percentage composition are: 3～5mm silicon carbide 15%, 1～3mm silicon carbide 40%, be not more than 1mm white fused alumina particle 5%, be not more than 1mm plate diamond spar particle 5%, be not more than 325 order white alundum powders 10%, be not more than 325 keevil shape lapis amiridiss 6%, coke 9%, carbon black 7%, aluminium powder 3%, additional tar bonding agent 2%, additional pitch bonding agent 2%.
Preparation process is: first by white alundum powder, plate diamond spar powder, coke, carbon black, aluminium powder carries out premix and makes powder mix, then silicon-carbide particle, white fused alumina particle, plate diamond spar particle are mixed with tar and pitch, then adds powder mix to mix thoroughly, mechanical pressing after ageing mixture, brick bat drying burns till and makes silicon carbide slide plate by 1400 ℃ of reducing atmospheres.
Embodiment 3
The raw material adopting in the present embodiment and quality percentage composition are: 3～5mm silicon carbide 18%, 1～3mm silicon carbide 37%, be not more than 1mm palm fibre corundum in granules 3%, be not more than 1mm sub-white corundum particle 7%, be not more than 325 order white alundum powders 8%, active oxidation aluminium powder 8%, coke 9%, graphite 7%, silica flour 3%, additional silicone resin bonding agent 5%.
Preparation process is: first by white alundum powder, active oxidation aluminium powder, coke, graphite, silica flour carries out premix and makes powder mix, then silicon-carbide particle, sub-white corundum particle, brown corundum in granules are mixed with silicone resin, then adds powder mix to mix thoroughly, mechanical pressing after ageing mixture, brick bat drying burns till and makes silicon carbide slide plate by 1350 ℃ of reducing atmospheres.
Embodiment 4
The raw material adopting in the present embodiment and quality percentage composition are: 3～5mm silicon carbide, 20%, 1～3mm silicon carbide 35%, is not more than 1mm alumine particle 5%, be not more than 1mm palm fibre corundum in granules 3%, be not more than 1mm sub-white corundum particle 7%, be not more than 325 keevil shape lapis amiridiss 5%, be not more than 325 order white alundum powders 5%, active oxidation aluminium powder 3%, carbon black 4%, coke 5%, graphite 3%, aluminium powder 2%, silica flour 3%, additional phenolic resin binder 5%.
Preparation process is: first by white alundum powder, plate diamond spar powder, active oxidation aluminium powder, carbon black, coke, graphite, aluminium powder, silica flour carries out premix and makes powder mix, again silicon-carbide particle, alumine particle, sub-white corundum particle, brown corundum in granules are mixed with resol, then add powder mix to mix thoroughly, mechanical pressing after ageing mixture, brick bat drying burns till and makes silicon carbide slide plate by 1380 ℃ of reducing atmospheres.
Embodiment 5
The raw material adopting in the present embodiment and quality percentage composition are: 3～5mm silicon carbide, 22%, 1～3mm silicon carbide 34%, is not more than 1mm alumine particle 6%, be not more than 1mm palm fibre corundum in granules 5%, be not more than 1mm sub-white corundum particle 6%, be not more than 325 keevil shape lapis amiridiss 4%, be not more than 325 order white alundum powders 5%, active oxidation aluminium powder 4%, carbon black 3%, coke 5%, graphite 2%, aluminium powder 2%, silica flour 2%, additional phenolic resin binder 6%.
Preparation process is: first by white alundum powder, plate diamond spar powder, active oxidation aluminium powder, carbon black, coke, graphite, aluminium powder, silica flour carries out premix and makes powder mix, again silicon-carbide particle, alumine particle, sub-white corundum particle, brown corundum in granules are mixed with resol, then add powder mix to mix thoroughly, mechanical pressing after ageing mixture, brick bat drying burns till and makes silicon carbide slide plate by 1400 ℃ of reducing atmospheres.
Embodiment 6
The raw material adopting in the present embodiment and quality percentage composition are: 3～5mm silicon carbide, 20%, 1～3mm silicon carbide 36%, is not more than 1mm alumine particle 5%, be not more than 1mm palm fibre corundum in granules 5%, be not more than 1mm sub-white corundum particle 6%, be not more than 325 keevil shape lapis amiridiss 4%, be not more than 325 order white alundum powders 4%, active oxidation aluminium powder 2%, carbon black 5%, coke 4%, graphite 3%, aluminium powder 3%, silica flour 2%, additional phenolic resin binder 5%.
Preparation process is: first by white alundum powder, plate diamond spar powder, active oxidation aluminium powder, carbon black, coke, graphite, aluminium powder, silica flour carries out premix and makes powder mix, again silicon-carbide particle, alumine particle, sub-white corundum particle, brown corundum in granules are mixed with resol, then add powder mix to mix thoroughly, mechanical pressing after ageing mixture, brick bat drying burns till and makes silicon carbide slide plate by 1380 ℃ of reducing atmospheres.
Table 1 unit: mass percent
The silicon carbide slide plate weave construction densification that the present invention is prepared, wear resisting property and antioxidant property are good, and there is the features such as intensity is high, anti-erosion, antiscour, good thermal shock stability, life-span length, the not resistance to erosion of original slide plate, the poor problem of thermal shock resistance have well been solved, can make the access times of original steel ladle slide board bring up to 4～5 times by 1～2 time, highly beneficial to ladle hot turnover and cost control, promotion prospect is extensive.
Claims (8)
1. a silicon carbide slide plate, its composition quality per-cent is:
Carborundum granularity 3～5mm 15～25%, granularity 1～3mm 30～40%,
Alumina particle, granularity is not more than 1mm 10～20%,
Aluminum oxide powder granularity is not more than 325 orders 10～16%,
Carbon materials 8～16%,
Oxidation inhibitor 3～7%,
Additional bonding agent 4～7%.
2. silicon carbide slide plate as claimed in claim 1, is characterized in that, in described silicon carbide, SiC quality percentage composition is not less than 96%.
3. silicon carbide slide plate as claimed in claim 1, is characterized in that, alumina particle used comprises in alumine, brown corundum, sub-white corundum, white fused alumina, plate diamond spar more than one, wherein Al in alumine
2o
3quality percentage composition is not less than 88%, Al in brown corundum and sub-white corundum
2o
3quality percentage composition is not less than 91%, Al in white fused alumina and plate diamond spar
2o
3quality percentage composition is not less than 96%.
4. silicon carbide slide plate as claimed in claim 1, is characterized in that, described aluminum oxide powder be in white fused alumina, plate diamond spar, activated alumina more than one.
5. silicon carbide slide plate as claimed in claim 1, is characterized in that, described carbon materials comprises in graphite, coke, carbon black more than one, and granularity is not more than 325 orders.
6. silicon carbide slide plate as claimed in claim 1, is characterized in that, described oxidation inhibitor be in metallic silicon power and aluminium powder more than one.
7. silicon carbide slide plate as claimed in claim 1, is characterized in that, described bonding agent comprises in coal tar, pitch, resol, silicone resin more than one.
8. the preparation method of silicon carbide slide plate as claimed in claim 1, by said ratio, the aluminum oxide powder in raw material, carbon materials, oxidation inhibitor are carried out to premix and make powder mix, by the order of addition(of ingredients) of silicon-carbide particle, alumina particle → bonding agent → powder mix, mix again, mechanical pressing after ageing mixture, adobe is burnt till silicon carbide slide plate after drying in 1350 ℃～1450 ℃ reducing atmospheres, and in this reducing atmosphere, oxygen concentration is lower than carbon monoxide concentration.
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| CN201110217437.7A CN102898154B (en) | 2011-07-29 | 2011-07-29 | Silicon carbide sliding plate and manufacturing method thereof |
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| CN201110217437.7A CN102898154B (en) | 2011-07-29 | 2011-07-29 | Silicon carbide sliding plate and manufacturing method thereof |
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| CN102898154B true CN102898154B (en) | 2014-03-19 |
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| CN103274692A (en) * | 2013-05-24 | 2013-09-04 | 东阿县鲁西冶金耐火材料有限公司 | Unfired SiC kiln furniture material and production method thereof |
| CN104341161B (en) * | 2013-07-30 | 2017-02-08 | 瑞泰科技股份有限公司 | Nano-scale catalytic metal-ceramic bonding firing-free bitumen-impregnation-free environment-friendly slide plate and preparation method thereof |
| CN103693977B (en) * | 2013-12-12 | 2017-01-11 | 东海县盛昌石英材料有限公司 | Regenerated pouring material used for swinging runner and prepared from waste slide plates and preparation method of regenerated pouring material |
| CN104446563A (en) * | 2014-12-08 | 2015-03-25 | 东北大学 | Method for preparing SiC (silicon carbide)-based refractory material by using silicon resin as binding agent |
| CN105110799A (en) * | 2015-07-09 | 2015-12-02 | 浙江长兴银兴窑业有限公司 | Toughened silicon carbide deck and making method thereof |
| CN105801145A (en) * | 2016-04-12 | 2016-07-27 | 安徽马钢耐火材料有限公司 | Unfired, impregnation-free and environment-friendly sliding plate brick bound through organic silicone modified phenolic resin, production method and application |
| CN106187247B (en) * | 2016-07-26 | 2019-11-08 | 唐山贝斯特高温材料有限公司 | Metallic aluminium silicon carbide composite diphase material and preparation method thereof |
| CN106256802A (en) * | 2016-08-09 | 2016-12-28 | 西安建筑科技大学 | A kind of organosilicon/phenolic resin binder and prepare the application of refractory material |
| CN108298989A (en) * | 2018-04-08 | 2018-07-20 | 河南航瑞碳化硅制品有限公司 | A kind of preparation method of reaction-sintered injection forming silicon carbide ceramics |
| CN113716943B (en) * | 2021-08-31 | 2022-09-06 | 浙江锦诚新材料股份有限公司 | Silicon mullite brick for cement rotary kiln and preparation method thereof |
| CN115259841A (en) * | 2022-07-18 | 2022-11-01 | 辽宁科技大学 | Refractory material, preparation method, lining brick and hazardous waste disposal equipment |
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