CN103992123A - Brushing-resistant submerged-nozzle inner wall for continuously casting high-manganese high-oxygen steel - Google Patents
Brushing-resistant submerged-nozzle inner wall for continuously casting high-manganese high-oxygen steel Download PDFInfo
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- CN103992123A CN103992123A CN201410179590.9A CN201410179590A CN103992123A CN 103992123 A CN103992123 A CN 103992123A CN 201410179590 A CN201410179590 A CN 201410179590A CN 103992123 A CN103992123 A CN 103992123A
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Abstract
A provided brushing-resistant submerged-nozzle inner wall for continuously casting high-manganese high-oxygen steel comprises the following raw materials in percent by mass: 65-90% of spinel, 1-5% of powdered phenolic resin, 5-15% of liquid phenolic resin, 1-5% of metal silicon, 1-5% of green silicon carbide, 0.5-3% of boron carbide and 0.5-3% of boron nitride. A conventional Al2O3-C material is replaced by spinel, no carbon materials exist, and parts of a metal powder and a non-oxide are added according to a specific proportion. The metal powder is selected from metal aluminium and metal silicon, and the non-oxide is selected from boron carbide and boron nitride. The total addition amount of the metal powder and the non-oxide is 1-5%. By adding the above four materials, when continuously-casted high-manganese high-oxygen steel brushes the inner wall, the impact-erosion resistance of the inner wall layer of the nozzle is substantially improved, and the service life of the submerged nozzle is improved by 4 hours or more.
Description
Technical field
The present invention relates to fire resisting material field, specifically a kind of continuous casting Gao Meng, high-oxygen steel resistance to erosion submerged nozzle inwall.
Background technology
Along with the development of Iron And Steel Industry, refractories industry has also obtained significant progress both at home and abroad.Aluminum-carbon refractory material is a kind of novel refractory that starts rise about the eighties in last century.Be mainly used at first refractory brick aspect, little by little promote afterwards to continuous casting tundish aspect.For the develop rapidly of steel industry continuous casting technology provides indispensable technical support.
Continuous casting is commonly called as continuous-casting three-main-product with aluminum-carbon refractory material, is mainly made up of long nozzle, integral stopper rod, submerged nozzle.As one of aluminium carbon functional materials, submerged nozzle design of material is generally all with Al
2o
3-C material is main.By adding some necessary additives as silicon carbide, Pure Silicon Metal, norbide etc., the antioxidant property of raising material, guarantees that product reaches continuous casting of molten steel requirement.In the last few years, along with steel mill's smelting molten steel rhythm is more and more faster, and more and more tighter to the control of smelting cost, thereupon more and more higher to aluminium carbon service requirements refractory materials.For submerged nozzle, especially inner wall layer material aspect, traditional Al
2o
3-C material can not meet the service requirements of casting process gradually.Once run into the molten steel that some manganese contents are higher, oxygen level is higher, this class material does not reach the service requirements of steel mill especially completely.
Spinel is Al
2o
3, at high temperature synthetic a kind of compound material of two kinds of materials of MgO, its chemical stability is better than Al
2o
3material compares Al in the environment for use of Gao Meng, hyperoxia
2o
3material has more advantage.
All the time, anti-oxidation is the matter of utmost importance that carbonaceous material need to solve always.From use experience in the past, metal powder coordinates the anti-oxidation measure of non-oxidized substance always in occupation of the dominant position of this respect.But along with outline and the production development spinel quartz material of steel quality, in the oxidative attack of anti-molten steel, the development of resistance to erosion material, add widespread use metallic silicon power norbide, boron nitride series anti-oxidation, resistance to erosion application, experimental results show that: by adding in specific proportions cooperation, spinel and Pure Silicon Metal, after the raw materials such as norbide nitrogenize roc, Carbon-free refractories, anti-oxidation resistance to erosion successful is strengthened, especially, while tackling high mangaenese steel, show better.
Summary of the invention
The present invention, in order to solve the problem of prior art, provides a kind of resistant to elevated temperatures continuous casting Gao Meng, high-oxygen steel submerged nozzle, has improved the work-ing life at the mouth of a river and has reduced cost.
The present invention includes mouth of a river inner wall layer and body, the raw material of mouth of a river inner wall layer material consists of: spinel (Al
2o
3-MgO-C) 65% ~ 90%, Powdered resol 1% ~ 5%, liquid phenolic resin 5% ~ 15%, Pure Silicon Metal 1% ~ 5%, green silicon carbide 1% ~ 5%, norbide 0.5% ~ 3%, boron nitride 0.5% ~ 3%;
Described spinel granularity is 0.1-0.2 order, 0.2 ~ 0.5 order, 325 orders, and above three kinds of weight ratios are 3.5:1:1.5.
Described Powdered resol granularity is 120 orders, and purity is more than 90%.
Described liquid phenolic resin temperature is below 20 DEG C, and viscosity is not less than 400Pa.
Described Pure Silicon Metal, green silicon carbide purity are more than 98%, and granularity is 200 orders, and two kinds of raw material weights are than being 2:1.
Norbide in described inner wall layer, boron nitride purity are more than 95%, and granularity is 325 orders, and two kinds of raw material weights are than being 1:1.
Beneficial effect of the present invention is: mouth of a river inner wall layer material is by traditional Al
2o
3-C material improvement is Al
2o
3-MgO-C carbon-free material, and add a part of metal powder and non-oxidized substance according to specified proportion, greatly improve the scour resistance of inner wall layer material, work-ing life while having improved greatly casting Gao Meng, high-oxygen steel.
Embodiment
The present invention includes the raw material of following mass percent: spinel 65-90%, Powdered resol 1% ~ 5%, liquid phenolic resin 5% ~ 15%, Pure Silicon Metal 1% ~ 5%, green silicon carbide 1% ~ 5%, norbide 0.5% ~ 3%, boron nitride 0.5% ~ 3%.
Described spinel granularity is 0.2-0.1 order, 0.2-0 order, 325 orders; Above two kinds of weight ratios are: 3.5:1:1.5;
Described resol powder granularity is 120 orders, and purity is more than 90%.
Described liquid phenolic resin requires under room temperature (20 DEG C), and viscosity is not less than 400Pa.
Described Pure Silicon Metal, green silicon carbide granularity are 200 orders, and purity is more than 98%, and two kinds of raw material weights are than being 2:1.
Described norbide, boron nitride granularity are 325 orders, and purity is more than 95%, and two kinds of raw material weights are than being 1:1.
This continuous casting Gao Meng, high-oxygen steel use the production method of resistance to erosion submerged nozzle as follows:
To prepare respectively inner-wall material and bulk material puts into mixer and is mixed uniformly, and (first put inner wall layer material according to order, put again bulk material) the mixed raw material making is dropped in rubber mold, compression moulding in isostatic pressing machine after sealing, pressure is 120MPa.The product drying of forming, burn till, process, after the operations such as spraying, can pack delivery.
Below by specific embodiment, the invention will be further described.
Embodiment 1
A kind of continuous casting Gao Meng, high-oxygen steel resistance to erosion submerged nozzle inwall, adopts following proportioning raw materials: spinel 180kg, green silicon carbide: 4kg, Pure Silicon Metal: 8kg, norbide: 2kg, boron nitride: 2kg, resol (powder): 4kg, resol (liquid): 36kg;
Various raw materials all carry out proportioning by desired particle size, and spinel granularity is 0.1-0.2 order, 0.2-0.5 order, 325 orders, and above three kinds of weight ratios are 3.5:1:1.5.Powdered resol granularity is 120 orders, and purity is more than 90%.Liquid phenolic resin temperature is controlled at 10 DEG C, and viscosity is 500Pa.Pure Silicon Metal, green silicon carbide purity are more than 98%, and granularity is 200 orders, and two kinds of raw material weights are than being 2:1.Norbide, boron nitride purity are more than 95%, and granularity is 325 orders, and two kinds of raw material weights are than being 1:1.
Make submerged nozzle according to such scheme, cost of manufacture is than original Al
2o
3-C mass immersion type sprue has reduced by 25%, when casting Gao Meng, high-oxygen steel, uses and has improved work-ing life more than 4 hours.
Embodiment 2
A kind of continuous casting Gao Meng, high-oxygen steel resistance to erosion submerged nozzle inwall, adopts following proportioning raw materials: spinel: 350kg, green silicon carbide: 6kg, Pure Silicon Metal: 12kg, norbide: 1.2kg, boron nitride: 1.2kg, resol (powder): 4.6kg, resol (liquid): 32kg;
Various raw materials all carry out proportioning by desired particle size, and spinel granularity is 0.1-0.2 order, 0.2-0.5 order, 325 orders, and above three kinds of weight ratios are 3.5:1:1.5.Powdered resol granularity is 120 orders, and purity is more than 90%.Liquid phenolic resin temperature is controlled at 15 DEG C, and viscosity is 400Pa.Pure Silicon Metal, green silicon carbide purity are more than 98%, and granularity is 200 orders, and two kinds of raw material weights are than being 2:1.Norbide, boron nitride purity are more than 95%, and granularity is 325 orders, and two kinds of raw material weights are than being 1:1.
Make submerged nozzle according to such scheme, cost of manufacture is than original Al
2o
3-C mass immersion type sprue has reduced by 30%, when casting Gao Meng, high-oxygen steel, uses and has improved work-ing life more than 4 hours.
Embodiment 3
A kind of continuous casting Gao Meng, high-oxygen steel resistance to erosion submerged nozzle inwall, adopts following proportioning raw materials: spinel 350kg, green silicon carbide: 6kg, Pure Silicon Metal: 8kg, norbide: 2.4kg, boron nitride: 2.4kg, resol (powder): 3.2kg, resol (liquid): 32kg;
Various raw materials all carry out proportioning by desired particle size, and spinel granularity is 0.1-0.2 order, 0.2-0.5 order, 325 orders, and above three kinds of weight ratios are 3.5:1:1.5.Powdered resol granularity is 120 orders, and purity is more than 90%.Liquid phenolic resin temperature is controlled at 18 DEG C, and viscosity is 600Pa.Pure Silicon Metal, green silicon carbide purity are more than 98%, and granularity is 200 orders, and two kinds of raw material weights are than being 2:1.Norbide, boron nitride purity are more than 95%, and granularity is 325 orders, and two kinds of raw material weights are than being 1:1.
Make submerged nozzle according to such scheme, cost of manufacture is than original Al
2o
3-C mass immersion type sprue has reduced by 30%, when casting Gao Meng, high-oxygen steel, uses and has improved work-ing life more than 4 hours.
The concrete application approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improve and also should be considered as protection scope of the present invention.
Claims (6)
1. continuous casting Gao Meng, a high-oxygen steel resistance to erosion submerged nozzle inwall, it is characterized in that comprising the raw material of following mass percent: spinel 65-90%, Powdered resol 1% ~ 5%, liquid phenolic resin 5% ~ 15%, Pure Silicon Metal 1% ~ 5%, green silicon carbide 1% ~ 5%, norbide 0.5% ~ 3%, boron nitride 0.5% ~ 3%.
2. continuous casting Gao Meng according to claim 1, high-oxygen steel resistance to erosion submerged nozzle inwall, is characterized in that: described spinel granularity is 0.1-0.2 order, 0.2-0.5 order, 325 orders, and above three kinds of weight ratios are 3.5:1:1.5.
3. continuous casting Gao Meng according to claim 1, high-oxygen steel resistance to erosion submerged nozzle inwall, is characterized in that: described Powdered resol granularity is 120 orders, and purity is more than 90%.
4. continuous casting Gao Meng according to claim 1, high-oxygen steel resistance to erosion submerged nozzle inwall, is characterized in that: described liquid phenolic resin temperature is below 20 DEG C, and viscosity is not less than 400Pa.
5. continuous casting Gao Meng according to claim 1, high-oxygen steel resistance to erosion submerged nozzle inwall, is characterized in that: described Pure Silicon Metal, green silicon carbide purity are more than 98%, and granularity is 200 orders, and two kinds of raw material weights are than being 2:1.
6. continuous casting Gao Meng according to claim 1, high-oxygen steel resistance to erosion submerged nozzle inwall, is characterized in that: described norbide, boron nitride purity are more than 95%, and granularity is 325 orders, and two kinds of raw material weights are than being 1:1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179590.9A CN103992123A (en) | 2014-04-30 | 2014-04-30 | Brushing-resistant submerged-nozzle inner wall for continuously casting high-manganese high-oxygen steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179590.9A CN103992123A (en) | 2014-04-30 | 2014-04-30 | Brushing-resistant submerged-nozzle inner wall for continuously casting high-manganese high-oxygen steel |
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| CN201410179590.9A Pending CN103992123A (en) | 2014-04-30 | 2014-04-30 | Brushing-resistant submerged-nozzle inner wall for continuously casting high-manganese high-oxygen steel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105985122A (en) * | 2015-02-28 | 2016-10-05 | 宝山钢铁股份有限公司 | Refractory material for submersed nozzle inner hole body |
| CN108975900A (en) * | 2018-08-16 | 2018-12-11 | 中钢集团洛阳耐火材料研究院有限公司 | Coal slurry gasifier magnesium aluminate spinel-Tercod preparation method |
| CN113336560A (en) * | 2021-05-18 | 2021-09-03 | 江苏泰瑞耐火有限公司 | Refractory material for long nozzle and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796028A (en) * | 2004-12-24 | 2006-07-05 | 中钢集团洛阳耐火材料研究院 | Anti sealed immersion nozzle in use for continuous casting specific steel |
| 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 |
-
2014
- 2014-04-30 CN CN201410179590.9A patent/CN103992123A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796028A (en) * | 2004-12-24 | 2006-07-05 | 中钢集团洛阳耐火材料研究院 | Anti sealed immersion nozzle in use for continuous casting specific steel |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105985122A (en) * | 2015-02-28 | 2016-10-05 | 宝山钢铁股份有限公司 | Refractory material for submersed nozzle inner hole body |
| CN108975900A (en) * | 2018-08-16 | 2018-12-11 | 中钢集团洛阳耐火材料研究院有限公司 | Coal slurry gasifier magnesium aluminate spinel-Tercod preparation method |
| CN113336560A (en) * | 2021-05-18 | 2021-09-03 | 江苏泰瑞耐火有限公司 | Refractory material for long nozzle and preparation method thereof |
| CN113336560B (en) * | 2021-05-18 | 2022-04-15 | 江苏泰瑞耐火有限公司 | Refractory material for long nozzle and preparation method thereof |
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Application publication date: 20140820 |