CN100398234C - Integral column of sagger in composite structure - Google Patents
Integral column of sagger in composite structure Download PDFInfo
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- CN100398234C CN100398234C CNB2004100603560A CN200410060356A CN100398234C CN 100398234 C CN100398234 C CN 100398234C CN B2004100603560 A CNB2004100603560 A CN B2004100603560A CN 200410060356 A CN200410060356 A CN 200410060356A CN 100398234 C CN100398234 C CN 100398234C
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- aluminium
- oxide
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Abstract
The present invention belongs to the function fire-resistant material for continuous casting, which provides an integral plug column with a composite structure. A column body (1) is Al2O3-C material, and the material in a column head (2) is the same as the column body; the column head is attached with a fire-resistant material surface layer combined with carbon-free ceramics; the surface layer adopts metal and oxide as raw material, metal powder is one kind of aluminium powder, silicon powder, aluminium silicon alloy powder and aluminium magnesium alloy powder, the oxide is one kind or two kinds or three kinds among corundum, spinel and magnesium oxide, wherein the corundum comprises sinter oxidation aluminium powder; the weight percentage of the metal powder and the oxide is 5 to 20 percent metal powder and 80 to 95 percent oxide. The integral plug column with a composite structure is made by the present invention, having the column head, wherein the surface layer of which comprises no carbon. The carbon-free layer has the characteristic of no oxidation problem in the process of use, and the present invention has the advantages of high steel liquid corrosion resistance performance, exfoliation resistance performance and long service life.
Description
Affiliated technical field
The invention belongs to the continuous casting functional refractory, relate generally to a kind of composite construction integral column of sagger.
Background technology
In continuous casting process, stopper and mouth of a river combination play control molten steel flowing from the tundish to the crystallizer.Caput is the key position of stopper, and can its corrosion resistance and anti-strip are directly connected to stopper normally control stream and continuous casting time length.At present used integral column of sagger rod body all is an aluminium carbon material, and caput is carbon containing refractories such as aluminium carbon, magnesium carbon, spinelle carbon according to continuous casting steel grade difference.Because carbon containing, material has thermal shock resistance and anti-strip preferably, but obviously not enough aspect non-oxidizability, anti-molten steel erosion, and is difficult in the further raising in service life, also is difficult to adapt to the development of continuous casting technology.Particularly when the continuous casting high-oxygen steel, the over oxidation of carbon makes and contains that the carbon rod head seriously deteriorates and inapplicable.
Summary of the invention
Purpose of the present invention just is to propose a kind of composite construction integral column of sagger, makes it be applicable to that long continuous casting makes the casting process of situations such as time requirement, elevated oxygen level, and has the characteristics of long service life.
The composite construction integral column of sagger that the present invention proposes, integral column of sagger rod stature matter is Al
2O
3-C material, its proportioning are formed roughly the same existing integral column of sagger product, principal component Al
2O
340～60wt%, C+SiC 25～35wt%, raw material can adopt high aluminium materials such as electro-corundum, alundum or brown corundum, and crystalline flake graphite and antioxidant are bond with phenolic resins.The caput inner materials is with excellent body; Caput is compounded with carbon-free ceramic bonded refractory top layer; It is raw material that silica flour or metal powder and oxide are adopted in this top layer, and metal powder is a kind of in aluminium powder, alusil alloy powder or the Al-Mg alloy powder, and oxide is a kind of or two or three between them in corundum, spinelle, the magnesia; Wherein corundum comprises the sintering oxidation aluminium powder; The percentage by weight of silica flour or metal powder and oxide is: silica flour or metal powder 5～20%, oxide 80～95%.
The bond that adopt on the caput top layer is an inorganic bonding agent, and the compound carbon-free ceramic bonded refractory skin depth of caput is 2～10mm.
Inorganic bonding agent is aluminium dihydrogen phosphate or aluminium colloidal sol or aluminium Ludox or magnalium colloidal sol, and the bond consumption is 4～10% of a top layer ingredients by weight.
The different blanks of forming add moulding sequentially with sealing in the gum cover and adopting isostatic compaction, and briquetting pressure is 120～180MPa.The composite construction integral column of sagger caput of forming is processed into drawing and requires size before heat treatment.
Heat treatment is carried out in electrically heated kiln, and heat treatment temperature is 1100～1400 ℃, nitrogen atmosphere or goods are buried carbon protection.Under this heat-treat condition, stopper aluminium carbon part material forms the carbon combination by the phenolic resins charing, the caput top layer forms the not carbon containing refractory of ceramic combination then by the nitridation reaction of the metal component in the batching or the low-temperature sintering effect of carburizing reagent and colloid bond.
The composite construction integral column of sagger that the present invention makes has the carbon-free caput in a top layer.These not carbon-containing bed characteristics in use are not have problem of oxidation, have high anti-molten steel aggressivity, anti-strip and high service life.
Description of drawings
Accompanying drawing 1 is the schematic diagram of composite construction integral column of sagger of the present invention.
Among the figure, 1, barred body, 2, caput.
The specific embodiment
The inner aluminium carbon batching of the integral column of sagger rod body of preparation and caput is brown corundum 60%, sintering oxidation aluminium powder 10%, and crystalline flake graphite 22%, carborundum powder 6%, metallic silicon power 2%, bond phenolic resins are 10% of ingredients by weight; Carbon-free top layer batching is fused white corundum 70%, sintering Al
2O
320%, metallic silicon power 10%, bond aluminium Ludox (Al
2O
3Content 22%, SiO
2Content 6%), consumption is 8% of a top layer ingredients by weight.Above-mentioned two kinds of batchings are added bond respectively mix evenly in muller, inject isostatic compaction in the gum cover after 70 ℃ of oven dry, excellent body aluminium carbon material is injected put in place earlier, then the carbon-free material in caput top layer is injected, preferably get at the two interface
Broken line shape, briquetting pressure 130Mpa, pressurize 3 minutes.Base substrate 1350 ℃ of heat treatments in 3 hours under the shuttle kiln blanket of nitrogen after the moulding form through processing, brush antioxidizing paint again.
The inner aluminium carbon batching of rod body and caput is brown corundum 60%, sintering oxidation aluminium powder 10%, and crystalline flake graphite 22%, carborundum powder 6%, metallic silicon power 2%, bond phenolic resins are 10% of ingredients by weight; Carbon-free top layer batching is sintering magnesium aluminate spinel (Al
2O
3The positive spinel of 76-78%) 67%, sintering Al
2O
325%, magnesia powder 3%, Al-Mg alloy powder 5%, bond magnalium colloidal sol (Al
2O
3Content 18%, MgO content 6%) be 5% of top layer ingredients by weight.Above-mentioned two kinds of batchings are added bond respectively mix evenly in muller, inject isostatic compaction in the gum cover after 70 ℃ of oven dry, excellent body aluminium carbon material is injected put in place earlier, inject the carbon-free material in caput top layer then, broken line shape is preferably got at the two interface, briquetting pressure 150Mpa, pressurize 3 minutes.Base substrate 1350 ℃ of heat treatments in 3 hours under the shuttle kiln blanket of nitrogen after the moulding form through processing, brush antioxidizing paint again.
Embodiment 3
The inner aluminium carbon batching of rod body and caput is electric smelting sub-white corundum 60%, sintering oxidation aluminium powder 10%, and crystalline flake graphite 22%, carborundum powder 6%, metallic silicon power 2%, bond phenolic resins are 10% of ingredients by weight; Carbon-free top layer batching is alundum 30%, sintering magnesium aluminate spinel 40%, sintering Al
2O
310%, metallic aluminium powder 20%, bond aluminium colloidal sol (Al
2O
3Content 25%) be 10% of top layer ingredients by weight.Above-mentioned two kinds of batchings are added bond respectively mix evenly in muller, inject isostatic compaction in the gum cover after 70 ℃ of oven dry, excellent body aluminium carbon material is injected put in place earlier, then the carbon-free material in caput top layer is injected, broken line shape is preferably got at the two interface, briquetting pressure 130Mpa, pressurize 3 minutes.Base substrate 1300 ℃ of heat treatments in 3 hours under the shuttle kiln blanket of nitrogen after the moulding form through processing, brush antioxidizing paint again.
Embodiment 4
The inner aluminium carbon batching of rod body and caput is electric smelting sub-white corundum 60%, sintering oxidation aluminium powder 10%, and crystalline flake graphite 22%, carborundum powder 6%, metallic silicon power 2%, bond phenolic resins are 10% of ingredients by weight; Carbon-free top layer batching is alundum 75%, sintering Al
2O
315%, alusil alloy powder 10%, bond phosphate dihydrogen aluminum solution (Al
2O
3Content 20%) be 5% of top layer ingredients by weight.Above-mentioned two kinds of batchings are added bond respectively mix evenly in muller, inject isostatic compaction in the gum cover after 70 ℃ of oven dry, excellent body aluminium carbon material is injected put in place earlier, then the carbon-free material in caput top layer is injected, broken line shape is preferably got at the two interface, briquetting pressure 130Mpa, pressurize 3 minutes.Base substrate 1350 ℃ of heat treatments in 3 hours under the shuttle kiln blanket of nitrogen after the moulding form through processing, brush antioxidizing paint again.
Claims (4)
1. composite construction integral column of sagger, described stopper rod body (1) is Al
2O
3-C material, caput (2) inner materials is characterized in that with excellent body: caput is compounded with carbon-free ceramic bonded refractory top layer; It is raw material that silica flour or metal powder and oxide are adopted in this top layer, and metal powder is a kind of in aluminium powder, alusil alloy powder or the Al-Mg alloy powder, and oxide is a kind of or two or three between them in corundum, spinelle, the magnesia; Wherein corundum comprises the sintering oxidation aluminium powder; The percentage by weight of silica flour or metal powder and oxide is: silica flour or metal powder 5～20%, oxide 80～95%.
2. composite construction integral column of sagger according to claim 1 is characterized in that: the compound carbon-free ceramic bonded refractory skin depth of described caput is 2～10mm.
3. composite construction integral column of sagger according to claim 1 and 2 is characterized in that: the bond that adopt on described caput top layer is an inorganic bonding agent.
4. composite construction integral column of sagger according to claim 3 is characterized in that: described inorganic bonding agent is aluminium dihydrogen phosphate or aluminium colloidal sol or aluminium Ludox or magnalium colloidal sol, and the bond consumption is 4～10% of a top layer ingredients by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100603560A CN100398234C (en) | 2004-12-24 | 2004-12-24 | Integral column of sagger in composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100603560A CN100398234C (en) | 2004-12-24 | 2004-12-24 | Integral column of sagger in composite structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1796026A CN1796026A (en) | 2006-07-05 |
| CN100398234C true CN100398234C (en) | 2008-07-02 |
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ID=36817467
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100603560A Expired - Fee Related CN100398234C (en) | 2004-12-24 | 2004-12-24 | Integral column of sagger in composite structure |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722302B (en) * | 2009-12-24 | 2011-06-15 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of magnesium-carbon composite monolithic stopper rod for continuous casting |
| CN101774015A (en) * | 2010-03-23 | 2010-07-14 | 华耐国际（宜兴）高级陶瓷有限公司 | Composite rod head structure plugging rod |
| CN101966579A (en) * | 2010-10-21 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Multilayer stopper rod for continuous casting |
| CN102039403A (en) * | 2011-01-18 | 2011-05-04 | 北京利尔高温材料股份有限公司 | Method for manufacturing spinel composite monoblock stopper for continuous casting of low-carbon free-cutting steel |
| CN103817318A (en) * | 2014-02-24 | 2014-05-28 | 江苏泰瑞耐火有限公司 | Stopper body applied to continuous casting of high-manganese and high-oxygen steel |
| CN110540416B (en) * | 2019-10-11 | 2022-10-18 | 山东铭特陶瓷材料有限公司 | High-strength and long-service-life stopper rod and preparation method thereof |
| CN117206510A (en) * | 2023-09-12 | 2023-12-12 | 中钢集团洛阳耐火材料研究院有限公司 | Method for preventing integral stopper rod from nodulation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992011229A1 (en) * | 1990-12-20 | 1992-07-09 | Great Lakes Chemical Corporation | Process for the preparation of bromonitro-alcohols, dibromonitro-alcohols and blends thereof |
| CN1069246C (en) * | 1994-11-28 | 2001-08-08 | 维苏威乌斯法国公司 | Stopper rod with an outer layer for forming a gas-tight layer |
| CN1493417A (en) * | 2003-08-16 | 2004-05-05 | 青岛双鹰耐火材料有限公司 | Low carbon high aluminium integral composite plug rod |
-
2004
- 2004-12-24 CN CNB2004100603560A patent/CN100398234C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992011229A1 (en) * | 1990-12-20 | 1992-07-09 | Great Lakes Chemical Corporation | Process for the preparation of bromonitro-alcohols, dibromonitro-alcohols and blends thereof |
| CN1069246C (en) * | 1994-11-28 | 2001-08-08 | 维苏威乌斯法国公司 | Stopper rod with an outer layer for forming a gas-tight layer |
| CN1493417A (en) * | 2003-08-16 | 2004-05-05 | 青岛双鹰耐火材料有限公司 | Low carbon high aluminium integral composite plug rod |
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|---|---|
| CN1796026A (en) | 2006-07-05 |
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Owner name: SINOSTEEL CORPORATION LUOYANG INSTITUTE OF REFRACT Free format text: FORMER NAME: SINOSTEEL CORPORATION LUOYANG INSTITUTE OF REFRACTORIES RESEARCH |
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Address after: 471039 Xiyuan Road, Jianxi District, Henan, No. 43, No. Patentee after: Luoyang Refractory Institute Co., Ltd., SINO Steel Corporation Address before: 471039 Xiyuan Road, Jianxi District, Henan, No. 43, No. Patentee before: Luoyang Refractory Materials Inst, Zhonggang Group |
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