CN1194832C - Non-preheated aluminum-carbon long runner - Google Patents

Non-preheated aluminum-carbon long runner Download PDF

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Publication number
CN1194832C
CN1194832C CNB021006318A CN02100631A CN1194832C CN 1194832 C CN1194832 C CN 1194832C CN B021006318 A CNB021006318 A CN B021006318A CN 02100631 A CN02100631 A CN 02100631A CN 1194832 C CN1194832 C CN 1194832C
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China
Prior art keywords
component
carbon
mullite
vitreous silica
liner
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CN1424161A (en
Inventor
刘大为
任永曾
李轼保
王军
徐福泉
王立来
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Shengwei High Temperature Ceramics (Anshan) Co., Ltd.
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SHENGWEI HIGH TEMPERATURE CERAMICS (ANSHAN) CO Ltd
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Abstract

The present invention provides a novel non-preheated long nozzle made of aluminum and carbon, and a manufacturing method thereof. The non-preheated long nozzle of the present invention has good thermal shock stability and scouring resistant performance, and the non-preheated long nozzle can be safely used without being preheated. The manufacturing method extends the service life of the non-preheated long nozzle, greatly improves the working performance of continuous steel casting, and reduces cost.

Description

Non-preheated aluminum-carbon long runner
Technical field
The present invention relates to a kind of novel inorganic non-metallic refractory and product, especially relate to non-preheated aluminum-carbon long runner and the manufacture method in continuous casting steel machine is produced, used.
Background technology
At present the aluminum-carbon long runner that uses of continuous casting steel machine is divided into two types of preheating type and non-preheating types, must evenly be heated to before the preheating type long nozzle uses about 1000 ℃ and could normally use, if preheating is improper, heat up too fast or do not reach preheat temperature, long nozzle lobe or fracture will occur opening when watering, and influence is normal produces continuously.The non-preheating long nozzle manufacture method of present domestic employing is the consumption that increases the high raw material of thermal shock resistance in batching, to improve the heat endurance of mouth of a river integral body, but because the raw material such as the anti-molten steel scouring poor-performing such as vitreous silica, graphite of Heat stability is good, so this manufacture method has restricted the life-span of non-preheating long nozzle, and bursting still appears in this long nozzle easily, and the thermal shock resistance of long nozzle has become a pair of insoluble contradiction with service life.
Summary of the invention
In order to overcome shortcoming of the prior art, the inventor has found novel non-preheated aluminum-carbon long runner of the present invention and manufacture method through further investigation.
The purpose of this invention is to provide and a kind ofly can directly use, have good thermal shock resistance, abrasion resistance without preheating, and safe and reliable, the non-preheating long nozzle of long service life.
Another purpose of the present invention provides a kind of manufacture method of above-mentioned non-preheating long nozzle.
The present invention adopts following method to realize.
Aluminum-carbon long runner of the present invention comprises body and liner, form (percentage meter by weight as the aluminium carbon material of aluminum-carbon long runner body by following component, as follows): crystalline flake graphite 10-35%, carborundum and metallic silicon power 1-10% (wherein the weight ratio of carborundum and metallic silicon power is 1: 1), vitreous silica 5-25%, fused zirconia-mullite 5-15%, white fused alumina 35-55%, its condition is that above-mentioned each component percetage by weight sum is 100%; And the inner lining material as aluminum-carbon long runner is formed (the percentage meter is as follows by weight) by following component: fused zirconia-mullite 10-40%, vitreous silica 15-35%, alumina hollow ball 10-40%, light-burned α-Al 2O 35-20%, its condition is that above-mentioned each component percetage by weight sum is 100%.
Preferably form as above-mentioned aluminium carbon body material: crystalline flake graphite 30%, carborundum and metallic silicon power 8% (wherein the weight ratio of carborundum and metallic silicon power is 1: 1), vitreous silica 20%, fused zirconia-mullite 7%, white fused alumina 35% by following component; And the inner lining material as aluminum-carbon long runner preferably is made up of following component: fused zirconia-mullite 37%, vitreous silica 25%, alumina hollow ball 28%, light-burned α-Al 2O 310%.
Also preferably form as above-mentioned aluminium carbon body material: crystalline flake graphite 30%, carborundum and metallic silicon power 8% (wherein the weight ratio of carborundum and metallic silicon power is 1: 1), vitreous silica 18%, fused zirconia-mullite 8%, white fused alumina 36% by following component; And the inner lining material as aluminum-carbon long runner also preferably is made up of following component: fused zirconia-mullite 30%, vitreous silica 30%, alumina hollow ball 30%, light-burned α-Al 2O 310%.
Also preferably form as above-mentioned aluminium carbon body material: crystalline flake graphite 32%, carborundum and metallic silicon power 6% (wherein the weight ratio of carborundum and metallic silicon power is 1: 1), vitreous silica 18%, fused zirconia-mullite 5%, white fused alumina 39% by following component; And the inner lining material as aluminum-carbon long runner also preferably is made up of following component: fused zirconia-mullite 25%, vitreous silica 35%, alumina hollow ball 32%, light-burned α-Al 2O 38%.
The thermal conductivity factor of above-mentioned inner lining material is lower than 8 kilocalories/meter.
The each component of above-mentioned aluminium carbon body material and liner material all can have been bought on market.
In order to make non-preheating long nozzle of the present invention; the phenolic resins that in the raw material that the raw material and the liner material of above-mentioned aluminium carbon body material use are used, adds 10 weight % (the raw material weight sum of using in aluminium carbon body material is 100%) and 8 weight % (the raw material weight sum of using in the liner material is 100%) respectively; above-mentioned two kinds of materials are evenly mixed respectively; use high speed granulator with the raw material granulation; the granulation material is through the oven dry bed oven dry of flowing; make fugitive constituent satisfy the moulding requirement; use cold isostatic press at the 120-150MPa compacted under; the thickness of inner lining material is 1-10mm; the moulding product are fired under reducing atmosphere in the shuttle-type kiln; burn till product through vertical forming lathe processing; product surface applies inoxidzable coating again, promptly makes non-preheating long nozzle after the oven dry.
The product of non-preheating long nozzle of the present invention and prior art relatively has outstanding characteristics and significant advantage: thermal shock resistance is good especially, long service life, improved the operating efficiency of continuous casting steel machine greatly, therefore reduced cost, and improved operating condition, reduced labor strength.
Description of drawings
Fig. 1 is the cutaway view of long nozzle of the present invention.
The specific embodiment
With reference to Fig. 1.Long nozzle shown in Figure 1 is made up of body 1 and lining 2.
Embodiment 1
The each component of aluminium carbon body material is:
Crystalline flake graphite 30Kg;
Carborundum 4Kg;
Metallic silicon power 4kg;
Vitreous silica 20kg;
Fused zirconia-mullite 7Kg;
White fused alumina 35Kg;
The each component of liner material is:
Fused zirconia-mullite 37kg;
Vitreous silica 25kg;
Alumina hollow ball 28kg;
Light-burned α-Al 2O 310kg;
In order to make non-preheating long nozzle, the each component of above aluminium carbon body material is evenly mixed, add the 10Kg phenolic resin binder, each component with above liner material evenly mixes in addition, add the 8Kg phenolic resin binder, manufacture non-preheating long nozzle according to previously described method, thickness of inner lining is 5mm.
Embodiment 2
The each component of aluminium carbon body material is:
Crystalline flake graphite 30Kg:
Carborundum 4Kg;
Metallic silicon power 4Kg;
Vitreous silica 18kg;
Fused zirconia-mullite 8Kg;
White fused alumina 36Kg;
The each component of liner material is:
Fused zirconia-mullite 30kg;
Vitreous silica 30kg;
Alumina hollow ball 30kg:
Light-burned α-Al 2O 310kg;
In order to make non-preheating long nozzle, the each component of above aluminium carbon body material is evenly mixed, add the 10Kg phenolic resin binder, each component with above liner material evenly mixes in addition, add the 8Kg phenolic resin binder, manufacture non-preheating long nozzle according to previously described method, thickness of inner lining is 5mm.
Embodiment 3
The each component of aluminium carbon body material is:
Crystalline flake graphite 32Kg;
Carborundum 3Kg;
Metallic silicon power 3Kg;
Vitreous silica 18kg;
Fused zirconia-mullite 5Kg;
White fused alumina 39Kg;
The each component of interior tree material is:
Fused zirconia-mullite 25kg;
Vitreous silica 35kg;
Alumina hollow ball 32kg;
Light-burned α-Al 2O 38kg;
In order to make non-preheating long nozzle, the each component of above aluminium carbon body material is evenly mixed, add the 10Kg phenolic resin binder, each component with above liner material evenly mixes in addition, add the 8Kg phenolic resin binder, manufacture non-preheating long nozzle according to previously described method, thickness of inner lining is 5mm.
The performance of the said goods is as shown in table 1.
The performance of the non-preheating long nozzle of table 1 the present invention
Embodiment 1 product Embodiment 2 products Embodiment 3 products
Apparent porosity % 13.5 ?13.2 ?13.4
Compressive resistance MPa 29.5 ?30.8 ?30.2
Rupture strength Mpa 9.6 ?9.8 ?9.5
Service life min 585 ?628 ?578
Corrode slag line thickness mm 14 ?15 ?13
Open to have or not when watering and burst phenomenon Do not have Do not have Do not have
Very good from the performance of above data non-preheating long nozzle of the present invention as can be seen.
In sum, novel non-preheated aluminum-carbon long runner of the present invention has good thermal shock resistance, scour resistance, does not need preheating to use safely, has improved service life, has improved the operating efficiency of continuous casting steel machine greatly, and has reduced cost.

Claims (5)

1. non-preheated aluminum-carbon long runner, comprise body and liner, it is characterized in that as the aluminium carbon material of aluminum-carbon long runner body by weight the percentage meter form by following component: crystalline flake graphite 10-35%, carborundum and metallic silicon power 1-10%, wherein the weight ratio of carborundum and metallic silicon power is 1: 1, vitreous silica 5-25%, fused zirconia-mullite 5-15%, white fused alumina 35-55%, its condition is that above-mentioned each component percetage by weight sum is 100%; As the inner lining material of aluminum-carbon long runner by weight the percentage meter form by following component: fused zirconia-mullite 10-40%, vitreous silica 15-35%, alumina hollow ball 10-40%, light-burned α-Al 2O 35-20%, its condition is that above-mentioned each component percetage by weight sum is 100%.
2. according to the non-preheated aluminum-carbon long runner of claim 1, it is characterized in that described aluminium carbon body material is made up of following component: crystalline flake graphite 30%, carborundum and metallic silicon power 8%, vitreous silica 20%, fused zirconia-mullite 7%, white fused alumina 35%; Described liner material is made up of following component: fused zirconia-mullite 37%, vitreous silica 25%, alumina hollow ball 28%, light-burned α-Al 2O 310%.
3. according to the non-preheated aluminum-carbon long runner of claim 1, it is characterized in that described aluminium carbon body material is made up of following component: crystalline flake graphite 30%, carborundum and metallic silicon power 8%, vitreous silica 18%, fused zirconia-mullite 8%, white fused alumina 36%; Described liner material is made up of following component: fused zirconia-mullite 30%, vitreous silica 30%, alumina hollow ball 30%, light-burned α-Al 2O 310%.
4. according to the non-preheated aluminum-carbon long runner of claim 1, it is characterized in that described aluminium carbon body material is made up of following component: crystalline flake graphite 32%, carborundum and metallic silicon power 6%, vitreous silica 18%, fused zirconia-mullite 5%, white fused alumina 39%; Described liner material is made up of following component: fused zirconia-mullite 25%, vitreous silica 35%, alumina hollow ball 32%, light-burned α-Al 2O 38%.
5. the manufacture method of the non-preheated aluminum-carbon long runner of claim 1; it is characterized in that in the raw material that raw material that described aluminium carbon body material is used and liner material are used, adding respectively the raw material weight sum of using in aluminium carbon body material and be 100% 10 weight % and be the phenolic resins of 100% 8 weight % in the raw material weight sum that the liner material is used; above-mentioned two kinds of materials are evenly mixed respectively; use high speed granulator with the raw material granulation; the granulation material is through the oven dry bed oven dry of flowing; make fugitive constituent satisfy the moulding requirement; use cold isostatic press at the 120-150MPa compacted under; the thickness of inner lining material is 1-10mm; the moulding product are fired under reducing atmosphere in the shuttle-type kiln; burn till product through vertical forming lathe processing; product surface applies inoxidzable coating again, promptly makes non-preheating long nozzle after the oven dry.
CNB021006318A 2002-01-29 2002-01-29 Non-preheated aluminum-carbon long runner Active CN1194832C (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNB021006318A CN1194832C (en) 2002-01-29 2002-01-29 Non-preheated aluminum-carbon long runner

Publications (2)

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CN1424161A CN1424161A (en) 2003-06-18
CN1194832C true CN1194832C (en) 2005-03-30

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1311941C (en) * 2005-09-30 2007-04-25 翟立猛 Method for quick changing bottom inlet of intermediate ladle
CN101704099B (en) * 2009-12-09 2011-07-20 山东东耐高温材料有限公司 Tundish quick-replaceable sewage outlet used for metal continuous casting plate blank
CN101927340A (en) * 2010-05-17 2010-12-29 王世泰 Aluminium (zirconium)-carbon long nozzle, submerged entry nozzle and monolithic stopper refractory products for continuous casting
CN102528010B (en) * 2012-02-22 2013-09-11 河南省西保冶材集团有限公司 Long-life alumina-carbon long nozzle and production process for same
CN103480833B (en) * 2013-09-13 2015-09-16 洛阳理工学院 One exempts from preheating composite construction long nozzle inner lining material
CN105195724A (en) * 2015-10-10 2015-12-30 无锡兴达节能科技股份有限公司 Novel aluminum-carbon brick used for hot metal ladle
CN109759572B (en) * 2019-01-24 2021-05-18 北京利尔高温材料股份有限公司 Long-life baking-free submersed nozzle

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