CN101298099A - Method for preparing ultra-low-carbon steel entry nozzle - Google Patents

Method for preparing ultra-low-carbon steel entry nozzle Download PDF

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Publication number
CN101298099A
CN101298099A CNA2007100111926A CN200710011192A CN101298099A CN 101298099 A CN101298099 A CN 101298099A CN A2007100111926 A CNA2007100111926 A CN A2007100111926A CN 200710011192 A CN200710011192 A CN 200710011192A CN 101298099 A CN101298099 A CN 101298099A
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CN
China
Prior art keywords
low
carbon steel
ultra
nozzle
entry nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2007100111926A
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Chinese (zh)
Inventor
李涛
Original Assignee
李涛
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Filing date
Publication date
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Priority to CNA2007100111926A priority Critical patent/CN101298099A/en
Publication of CN101298099A publication Critical patent/CN101298099A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a processing method of a nozzle for ultra-low-carbon steel, which is characterized in that: the nozzle for ultra-low-carbon steel is compositely made of a main body and an inner lining; the material of the main body of the invention is composed of flake graphite, silicon carbide, fused silica and white corundum; the material of the inner lining of the invention is composed of electrically melted zirconium mullite and magnesia- alumina spinel and made through soft burning. The preparing steps of the nozzle of the invention comprise that: weighting the main body materials and the inner lining materials according to the raw material formula, adding with phenolic resin, respectively and evenly mixing the two materials, making granule material, drying and forming, burning the formed pieces in kiln, mechanically processing and finally coating an anti-oxidation coating layer. The nozzle of the ultra-low-carbon steel has good performances of thermal shock stability, erosion resistance and long service life, is safe and reliable and able to greatly improve the working efficiency of continuously casting low carbon steel, reduce cost, enhance operating conditions and reduce labor intensity.

Description

A kind of preparation method of ultra-low-carbon steel entry nozzle
Technical field
The present invention relates to a kind of preparation method of ultra-low-carbon steel entry nozzle.
Background technology
In recent years, domestic smelter has been succeeded in developing the production technology of ultra-low-carbon steel, and this has proposed quite harsh requirement to refractory material, promptly all should adopt carbon-free or low-carbon (LC) material from making steel continuous casting all refractory materials that contact with molten steel, avoids molten steel recarburization.Traditional what use in continuous casting is aluminum-carbon long runner, because of its carbon content can not be used about 30%; There is low shortcoming in service life in vitreous silica matter long nozzle.United States Patent (USP) 4804644 disclosed a kind of ceramic materials, be by zircon, silicon nitride, aluminium oxide and sintering aid through etc. the ceramic material made of static pressure, sintering, this material exists anti-erosion, anti-molten steel scouring ability relatively poor.
Summary of the invention
The purpose of this invention is to provide and a kind ofly have good thermal shock resistance, abrasion resistance, and the preparation method of the ultra-low-carbon steel entry nozzle of safe and reliable, long service life.
The preparation method content Description of ultra-low-carbon steel entry nozzle of the present invention:
The preparation method of ultra-low-carbon steel entry nozzle of the present invention is characterized in that: ultra-low-carbon steel entry nozzle is by body and liner is compound makes;
The bulk material of ultra-low-carbon steel entry nozzle is by crystalline flake graphite 40%, carborundum 20%, vitreous silica 15%, white fused alumina 25%;
The inner lining material of ultra-low-carbon steel entry nozzle is by electric smelting Zirconium mullite 50%, magnesium aluminate spinel 30%, light-burned Al 2O 320%.
The preparation ultra-low-carbon steel entry nozzle follows these steps to finish:
(1), take by weighing raw material, and add phenolic resins by the weight ratio of above-mentioned bulk material and inner lining material composition of raw materials;
(2), with evenly mixing, granulation material, oven dry, the moulding respectively of above-mentioned two kinds of materials;
(3), the moulding product fire in kiln, make ultra-low-carbon steel entry nozzle through machining, surface applied inoxidzable coating.
Ultra-low-carbon steel entry nozzle of the present invention, carbon-free inner liner remains intact in whole casting cycle, it is safe and reliable to have good thermal shock resistance, abrasion resistance, long service life and performance, improved greatly the production of continuous casting steel machine mild steel operating efficiency, reduce cost, and improved operating condition, reduced working strength of workers.
The specific embodiment
Ultra-low-carbon steel entry nozzle of the present invention is achieved in that bulk material: crystalline flake graphite 40kg, carborundum 20kg, vitreous silica 15kg, white fused alumina 25kg; Inner lining material: electric smelting Zirconium mullite 50kg, magnesium aluminate spinel 30kg, light-burned Al 2O 320kg.
Above-mentioned raw materials is evenly mixed, add the phenolic resins of 10kg at the bulk material raw material; The phenolic resins that in the inner lining material raw material, adds 8kg; Use high speed granulator with raw material granulation, oven dry, moulding.
The moulding product after firing under the reducing atmosphere, are made through machining in kiln, at the surface applied inoxidzable coating, promptly make ultra-low-carbon steel entry nozzle after the oven dry.

Claims (1)

1, a kind of non-preheating used for ultra-low-carbon steel long nozzle is characterized in that: ultra-low-carbon steel entry nozzle is by body and liner is compound makes;
The bulk material of ultra-low-carbon steel entry nozzle is by crystalline flake graphite 40%, carborundum 20%, vitreous silica 15%, white fused alumina 25%;
The inner lining material of ultra-low-carbon steel entry nozzle is by electric smelting Zirconium mullite 50%, magnesium aluminate spinel 30%, light-burned Al 2O 320%.
The preparation ultra-low-carbon steel entry nozzle follows these steps to finish:
(1), take by weighing raw material, and add phenolic resins by the weight ratio of above-mentioned bulk material and inner lining material composition of raw materials;
(2), with evenly mixing, granulation material, oven dry, the moulding respectively of above-mentioned two kinds of materials;
(3), the moulding product fire in kiln, make ultra-low-carbon steel entry nozzle through machining, surface applied inoxidzable coating.
CNA2007100111926A 2007-04-30 2007-04-30 Method for preparing ultra-low-carbon steel entry nozzle Pending CN101298099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2007100111926A CN101298099A (en) 2007-04-30 2007-04-30 Method for preparing ultra-low-carbon steel entry nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2007100111926A CN101298099A (en) 2007-04-30 2007-04-30 Method for preparing ultra-low-carbon steel entry nozzle

Publications (1)

Publication Number Publication Date
CN101298099A true CN101298099A (en) 2008-11-05

Family

ID=40078127

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2007100111926A Pending CN101298099A (en) 2007-04-30 2007-04-30 Method for preparing ultra-low-carbon steel entry nozzle

Country Status (1)

Country Link
CN (1) CN101298099A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102489696A (en) * 2011-12-15 2012-06-13 北京利尔高温材料股份有限公司 Oxide and non-oxide composite tundish nozzle
CN102701758A (en) * 2012-06-04 2012-10-03 苏州宝明高温陶瓷有限公司 Alumina carbon refractory material for continuous casting
CN107252886A (en) * 2017-06-08 2017-10-17 中钢集团洛阳耐火材料研究院有限公司 A kind of long nozzle for continuous casting inner lining material
CN109422530A (en) * 2017-08-24 2019-03-05 宝山钢铁股份有限公司 It is a kind of to prevent from opening the long water gap bowl part for pouring fracture
CN109809832A (en) * 2019-02-20 2019-05-28 江苏泰瑞耐火有限公司 One kind is for mouth of a river nanometer refractory material preparation method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102489696A (en) * 2011-12-15 2012-06-13 北京利尔高温材料股份有限公司 Oxide and non-oxide composite tundish nozzle
CN102701758A (en) * 2012-06-04 2012-10-03 苏州宝明高温陶瓷有限公司 Alumina carbon refractory material for continuous casting
CN107252886A (en) * 2017-06-08 2017-10-17 中钢集团洛阳耐火材料研究院有限公司 A kind of long nozzle for continuous casting inner lining material
CN109422530A (en) * 2017-08-24 2019-03-05 宝山钢铁股份有限公司 It is a kind of to prevent from opening the long water gap bowl part for pouring fracture
CN109809832A (en) * 2019-02-20 2019-05-28 江苏泰瑞耐火有限公司 One kind is for mouth of a river nanometer refractory material preparation method
CN109809832B (en) * 2019-02-20 2021-04-09 江苏泰瑞耐火有限公司 Preparation method of nano refractory material for water gap

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Open date: 20081105