CN101837436A - Function protecting material for special ASP ultra-low carbon continuous casting crystallizer - Google Patents
Function protecting material for special ASP ultra-low carbon continuous casting crystallizer Download PDFInfo
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- CN101837436A CN101837436A CN201010140835A CN201010140835A CN101837436A CN 101837436 A CN101837436 A CN 101837436A CN 201010140835 A CN201010140835 A CN 201010140835A CN 201010140835 A CN201010140835 A CN 201010140835A CN 101837436 A CN101837436 A CN 101837436A
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- 239000000463 material Substances 0.000 title claims abstract description 64
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 28
- 238000009749 continuous casting Methods 0.000 title claims abstract description 25
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 16
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 14
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 7
- 235000013024 sodium fluoride Nutrition 0.000 claims abstract description 7
- 239000011775 sodium fluoride Substances 0.000 claims abstract description 7
- 239000010456 wollastonite Substances 0.000 claims abstract description 7
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 7
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 229940037003 alum Drugs 0.000 claims abstract description 6
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000004927 clay Substances 0.000 claims abstract description 6
- 239000010436 fluorite Substances 0.000 claims abstract description 6
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 56
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 22
- 239000011734 sodium Substances 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 230000009977 dual effect Effects 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 229910052570 clay Inorganic materials 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 abstract description 27
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 238000005266 casting Methods 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 3
- 239000006229 carbon black Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000000440 bentonite Substances 0.000 abstract 1
- 229910000278 bentonite Inorganic materials 0.000 abstract 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 abstract 1
- 230000006870 function Effects 0.000 description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000005255 carburizing Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003575 carbonaceous material Substances 0.000 description 4
- 239000003818 cinder Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 102100021257 Beta-secretase 1 Human genes 0.000 description 1
- 101710150192 Beta-secretase 1 Proteins 0.000 description 1
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The invention discloses a function protecting material for a special ASP ultra-low carbon continuous casting crystallizer, comprising the following components by weight percent: 1.5 percent of carbon black, 4.5 percent of bentonite, 15 percent of fluorite, 4.0 percent of manganese dioxide, 7.0 percent of white alkali, 4.0 percent of sodium fluoride, 2.0 percent of alum clay, 3.0 percent of magnesia, 1.0 percent of lithium carbonate, 9.5 percent of glass and 48.5 percent of wollastonite. Field test results show that when the function protecting material is used, the continuous casting crystallizer has better internal spreading property, thermal insulating performance and melting property, no slag, and normal flame; and the periphery in the crystallizer has stable and even heat transfer quantity, stable thermocouple heat flow, stable friction force and no occurrence of viscosity alarm, thereby meeting the requirement of high casting speed. A casting billet has no fire slag and slag sticking on the surface and no carburization, thereby meeting the requirements of a steel plant.
Description
Technical field
The invention belongs to the metallurgic auxiliary materials technical field, be specifically related to the continuous-casting crystallizer especially used function protective material of a kind of ASP Ultra-low carbon, described ASP is the section between CSP and cut deal, and pulling rate is than cut deal height, and is lower than CSP.
Background technology
In recent years, ultra-low-carbon steel (containing C≤0.03) is obtained develop rapidly, and replacing aluminum killed steel gradually becomes third generation deep punching steel.The composition characteristics of ultra-low-carbon steel are: Ultra-low carbon content, microalloying, steel are pure.The production of ultra-low-carbon steel has become the sign of a national automotive sheet level of production.The ultra-low-carbon steel of China is produced cut deal with Baosteel, Anshan iron and steel plant, Wuhan Iron and Steel Plant comparative maturity; the ASP Ultra-low carbon also is in the elementary step; because the limiting factor of all many-sides such as smelting condition and continuous casting process; the ASP Ultra-low carbon is produced and is faced a severe challenge, and especially directly influences the continuous casting functional protective material of cc billet surface quality.
When the ultra-low-carbon steel of continuous casting carbon content≤0.03, if use common function protecting material of continuous casting crystallizer, can cause casting billet surface or inner carburizing, carburetting, casting billet surface also easily produces defective simultaneously.Carbon increasing amount is generally 20 * 10
-6-50 * 10
-6, carburetting is mainly from the carbon in the function protective material, and the function protective material carbon content is high more, and then the strand carbon increasing amount is high more.For fear of with reduce strand carburetting, the carbon in the function protective material must reduce floor level.But too reduce the carbon content in the function protective material, can cause molten speed too fast, liquid slag layer and sinter layer instability very easily cause cc billet surface quality; In addition also can be blocked up because of liquid slag layer, melt cinder flows into uneven, can not form uniform slag film, causes the strand inhomogeneous cooling even, can produce the bleed-out accident when serious.
In the last few years, iron and steel enterprise generally adopted high-efficient continuous casting technology both at home and abroad, accelerated steel-making rhythm, increased the stove tap, to enhance productivity.So-called high efficiency continuous casting is meant that with high pulling rate be core, based on high-quality, the production of zero defect strand, realizes the high continuous casting system technology of watering rate, high operating rate that connects.But the realization of high casting speed continuous casting technology has brought many new difficult problems to continuous casting process, and for example along with the increase of poring rate, the continuous casting functional protective material relative consumption reduces; Between crystallizer wall and the solidified shell lubricated insufficient, conduct heat inhomogeneous; And then cause the casting billet surface defective, even sticker type breakout or the like takes place.Therefore, carry out the crystallizer function protective material Study on Technology that adapts with pulling rate and become continuous casting worker problem emphasis anxious to be solved.Especially develop ASP and be with the difficult point of ultra-low-carbon steel function protective material that high pulling rate descends and how guarantee the stability of liquid slag layer behind the low carbonaceous material consumption, and the reasonable control of melt cinder thickness and the improvement of heat-insulating property etc.
Ji steel three steel-making 2#3# conticasters are produced ASP Ultra-low carbon special-purpose steel, cast section: (100-135) * (900-1500), require from casting machine situation and output, require this casting machine work pulling rate to be up to 3.0m/min, general pulling rate is between 1.8～2.5m/min.Along with the further raising of pulling rate, play that lubricated strand reduces friction and the correct application of the crystallizer function protective material of crystallization control device heat compensator conducting property, become the key that high casting speed continuous casting is achieved.In order to realize the optimum operation performance and to obtain satisfied product quality, prevent that use because of function protective material from causing carburetting, the carburizing of strand, has higher requirement to function protective material:
1) slagging speed is fast, can in time replenish the quick consumption of melt cinder, can keep enough function protective material consumptions under high pulling rate;
2) the slag film thickness between crystallizer wall and base shell suits, is evenly distributed, and to reduce frictional force and to make crystallizer heat radiation homogenising, prevents bonding steel leakage;
3) enough slag layer thickness prevents molten steel recarburization and carburizing, reaches better heat insulation effect;
4) good melting characteristic and control heat energy power.
In a word, the core of this function protective material technology is exactly quick slagging, reaches certain slag consumption, to guarantee lubricating the strand abundance; Simultaneously must prevent carburetting, the carburizing of function protective material to strand.
Summary of the invention
The invention provides the continuous-casting crystallizer especially used function protective material of ASP Ultra-low carbon that a kind of slagging speed is fast, the slag film thickness is suitable, can prevent molten steel recarburization and carburizing.
The continuous-casting crystallizer especially used function protective material of a kind of ASP Ultra-low carbon; it comprises following component; C is black, swollen soil, fluorite, manganese dioxide, white alkali, sodium fluoride, alum clay, magnesia, lithium carbonate, glass, wollastonite, and its weight percentage is respectively 1.5%, 4.5%, 15%, 4.0%, 7.0%, 4.0%, 2.0%, 3.0%, 1.0%, 9.5%, 48.5%.
In the described function protective material, MnO
2Weight percentage is 2.50～3.50%, Li
2The O weight percentage is 0.30～0.50%, and the MgO weight percentage is 3.00～5.00%, Fe
2O
3Weight percentage is≤1.00%, MnO
2Weight percentage is 2.50～3.50%, dual alkalinity (CaO/SiO
2) be 0.85～0.95, all the other are SiO
2, CaO, Al
2O
3, Na
2O, F
-, its weight percentage is SiO
232.30～38.30%, CaO 28.80～34.80%, Al
2O
32.00 R～4.00%,
2O 6.50～9.50%, F
-5.00～8.00%.
In the described function protective material, MnO
2Weight percentage is 3.0%, Li
2The O weight percentage is 0.40%, and the MgO weight percentage is 4.00%, Fe
2O
3Weight percentage is 0.50%, MnO
2Weight percentage is 3.00%, dual alkalinity (CaO/SiO
2) be 0.90, all the other are SiO
2, CaO, Al
2O
3, Na
2O, F
-, its weight percentage is SiO
235.30%, CaO 31.80%, Al
2O
33.00%, R
2O 8.00%, F
-6.50%.
Below the invention will be further described:
The main emphasis of ASP ultra-low-carbon steel is in lubricated, but strand is prone to problems such as carburetting, carburizing during high pulling rate.
The design of function protective material chemical composition.
Dual alkalinity (the CaO/SiO of function protective material at first
2) design of R value; generally require the R value to be controlled between 0.85～0.95; to guarantee that the slag film forms a high proportion of glassy state in the crystallizer, improve lubricating between base shell and the crystallizer in the time of good heat transfer, the present invention controls the dual alkalinity of function protective material in 0.85～0.95 scope.Secondly, adopt method regulatory function protective material fusing point and viscosity, the wherein MnO of multiple flux
2Be an important flux, function protective material adds oxidant MnO
2Slag layer thickness is increased, and carbon content reduces in the enriched carbon layer, thereby controls the strand carbon increasing amount effectively.Li
2O: to improving the greasy property effect highly significant of function protective material, Li in the function protective material of the present invention
2O content control range is 0.40～0.50%; MgO: also can reduce function protective material fusing point, viscosity, crystallization temperature and setting temperature, improve the stability of function protective material, MgO content control range is 3.00～5.00% in the function protective material of the present invention; NaF, Na
2O is to reduce fusing point and viscosity in the effect of function protective material, as the Na of conventional func protective material flux important component
2O content control range is 6.50～9.50%; F
-: main effect is to reduce slag viscosity, improves the melt cinder flowability, and F-content control range is 5.00～8.00% in the function protective material of the present invention.Fe
2O
3Content has other raw material to carry, and control range is≤1.00%.
At last, the use of selecting for use of function protective material carbonaceous material.Require function protective material to melt fast under the high pulling rate, and require carbonaceous material can play skeleton function, form enough liquid slag layers.The requirement mixed carbon comtent can not be too high, but can not be low excessively.Therefore, join the carbon kind and select the ultra-fine carbon black of initial size for use, accelerate the scaling loss of carbonaceous material, reduce sinter layer thickness, reduce and avoid strand carburetting less than 23 nanometers.C in the function protective material of the present invention
GuThe content control range is 0.80～1.80%, and full C content control range is 3.00～5.00%.
The function protective material physical property is determined.The present invention requires function protective material to have high melt point, viscosity and burn-off rate faster.Requirement specifically is set is: fusing point (hemisphere point temperature) is 1100～1160 ℃; 1300 ℃ viscosity is 0.130～0.160PaS; Burn-off rate is 30～46 seconds (test of slag post method).
The performance of function protective material depends on the selection of system slag base-material, and conventional machine mixes slag and mainly adopts multiple raw material to mix.This research is selected to join the slag base-material with wollastonite as function protective material, and the conventional ingredient that this material contains is: SiO
2, CaO, MgO, Al
2O
3, compare with the pre-melt of routine and not contain Na
2O, F-have controlled Na in the slag effectively
2O, F-content avoid destroying the glass of slag film, guarantee lubricated between strand and the crystallizer stability of Slag Properties to be improved, and have obviously increased the stability of result of use.
Production technology and quality control standard.The physicochemical property stability of function protective material finished product is directly related with use production technology and control criterion.In order to adapt to the high-quality demand of high pulling rate function protective material, function protective material of the present invention has adopted following quality control standard: 1) every kind of raw material granularity requires by 320 orders; 2) mixing stirs, and the defibrination time is not less than 1 hour.
The function protective material that adopts above-mentioned result of study to produce is poured into a mould ultra-low-carbon steel on Ji steel three refining ASP2#3# conticasters, the slag consumption of pulling rate when 1.80～2.50m/min is 0.45kg/T steel, molten steel surface liquid slag layer thickness 10-15mm.Show through site test results, when this function protective material uses, spreadability, heat insulating ability and good, the no slag bar of meltdown property performance in crystallizer, flare is normal; Heat output is stable and even around in the crystallizer, and the thermocouple hot-fluid is stable, frictional force is stable, viscosity warning phenomenon do not occur, satisfies high pulling rate requirement.Casting billet surface does not have slag inclusion and dry slag phenomenon, and no carburetting reaches steel mill's strand requirement.
The specific embodiment
Embodiment one:
The continuous-casting crystallizer especially used function protective material of a kind of ASP Ultra-low carbon; it comprises following component; C is black, swollen soil, fluorite, manganese dioxide, white alkali, sodium fluoride, alum clay, magnesia, lithium carbonate, glass, wollastonite, and its weight percentage is respectively 1.5%, 4.5%, 15%, 4.0%, 7.0%, 4.0%, 2.0%, 3.0%, 1.0%, 9.5%, 48.5%.
In the described function protective material, MnO
2Weight percentage is 2.6%, Li
2The O weight percentage is 0.450%, and the MgO weight percentage is 3.2%, Fe
2O
3Weight percentage is 0.8%, MnO
2Weight percentage is 3.3%, dual alkalinity (CaO/SiO
2) be 0.90, all the other are SiO
2, CaO, Al
2O
3, Na
2O, F
-, its weight percentage is SiO
236.30%, CaO 32.80%, Al
2O
32.20%, R
2O 8.90%, F
-5.4%.
Embodiment two:
The continuous-casting crystallizer especially used function protective material of a kind of ASP Ultra-low carbon; it comprises following component; C is black, swollen soil, fluorite, manganese dioxide, white alkali, sodium fluoride, alum clay, magnesia, lithium carbonate, glass, wollastonite, and its weight percentage is respectively 1.5%, 4.5%, 15%, 4.0%, 7.0%, 4.0%, 2.0%, 3.0%, 1.0%, 9.5%, 48.5%.
In the described function protective material, MnO
2Weight percentage is 3.40%, Li
2The O weight percentage is 0.33%, and the MgO weight percentage is 3.7%, Fe
2O
3Weight percentage is 0.30%, MnO
2Weight percentage is 2.7%, dual alkalinity (CaO/SiO
2) be 0.88, all the other are SiO
2, CaO, Al
2O
3, Na
2O, F
-, its weight percentage is SiO
237.30%, CaO 32.80%, Al
2O
32.5%, R
2O 8.50%, F
-6.00%.
Embodiment two:
The continuous-casting crystallizer especially used function protective material of a kind of ASP Ultra-low carbon; it comprises following component; C is black, swollen soil, fluorite, manganese dioxide, white alkali, sodium fluoride, alum clay, magnesia, lithium carbonate, glass, wollastonite, and its weight percentage is respectively 1.5%, 4.5%, 15%, 4.0%, 7.0%, 4.0%, 2.0%, 3.0%, 1.0%, 9.5%, 48.5%.
In the described function protective material, MnO
2Weight percentage is 3.0%, Li
2The O weight percentage is 0.40%, and the MgO weight percentage is 4.00%, Fe
2O
3Weight percentage is 0.50%, MnO
2Weight percentage is 3.00%, dual alkalinity (CaO/SiO
2) be 0.90, all the other are SiO
2, CaO, Al
2O
3, Na
2O, F
-, the tool weight percentage is SiO
235.30%, CaO 31.80%, Al
2O
33.00%, R
2O 8.00%, F
-6.50%.
Claims (3)
1. continuous-casting crystallizer especially used function protective material of ASP Ultra-low carbon; it is characterized in that: it comprises following component; C is black, swollen soil, fluorite, manganese dioxide, white alkali, sodium fluoride, alum clay, magnesia, lithium carbonate, glass, wollastonite, and its weight percentage is respectively 1.5%, 4.5%, 15%, 4.0%, 7.0%, 4.0%, 2.0%, 3.0%, 1.0%, 9.5%, 48.5%.
2. the continuous-casting crystallizer especially used function protective material of ASP Ultra-low carbon as claimed in claim 1 is characterized in that: in the described function protective material, and MnO
2Weight percentage is 2.50～3.50%, Li
2The O weight percentage is 0.30～0.50%, and the MgO weight percentage is 3.00～5.00%, Fe
2O
3Weight percentage is≤1.00%, MnO
2Weight percentage is 2.50～3.50%, dual alkalinity (CaO/SiO
2) be 0.85～0.95, all the other are SiO
2, CaO, Al
2O
3, Na
2O, F
-, its weight percentage is SiO
232.30～38.30%, CaO 28.80～34.80%, Al
2O
32.00 R～4.00%,
2O 6.50～9.50%, F
-5.00～8.00%.
3. the continuous-casting crystallizer especially used function protective material of ASP Ultra-low carbon as claimed in claim 2 is characterized in that: in the described function protective material, and MnO
2Weight percentage is 3.0%, Li
2The O weight percentage is 0.40%, and the MgO weight percentage is 4.00%, Fe
2O
3Weight percentage is 0.50%, MnO
2Weight percentage is 3.00%, dual alkalinity (CaO/SiO
2) be 0.90, all the other are SiO
2, CaO, Al
2O
3, Na
2O, F
-, its weight percentage is SiO
235.30%, CaO 31.80%, Al
2O
33.00%, R
2O 8.00%, F
-6.50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010140835 CN101837436B (en) | 2010-04-07 | 2010-04-07 | Function protecting material for special ASP ultra-low carbon continuous casting crystallizer |
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| Publication Number | Publication Date |
|---|---|
| CN101837436A true CN101837436A (en) | 2010-09-22 |
| CN101837436B CN101837436B (en) | 2013-06-26 |
Family
ID=42741237
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|---|---|---|---|---|
| CN102019384A (en) * | 2010-12-08 | 2011-04-20 | 西峡龙成冶金材料有限公司 | High-viscosity continuous casting protective slag for solving slag inclusion on surface of low-carbon steel |
| CN102527963A (en) * | 2012-02-22 | 2012-07-04 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer protective material special for large round billet high-abrasion bearing steel |
| CN102527964A (en) * | 2012-02-22 | 2012-07-04 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer protective material special for steel plates with yield strength of over 390MPa |
| CN102554163A (en) * | 2012-02-22 | 2012-07-11 | 河南省西保冶材集团有限公司 | Energy-saving and environment-friendly protecting material for slab continuous casting mold |
| CN104128578A (en) * | 2014-06-18 | 2014-11-05 | 武汉钢铁(集团)公司 | Environment-friendly casting powder of continuous casting crystallizer for high-aluminum peritectic steel |
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| CN102019384B (en) * | 2010-12-08 | 2013-11-20 | 西峡龙成冶金材料有限公司 | High-viscosity continuous casting protective slag for solving slag inclusion on surface of low-carbon steel |
| CN102019384A (en) * | 2010-12-08 | 2011-04-20 | 西峡龙成冶金材料有限公司 | High-viscosity continuous casting protective slag for solving slag inclusion on surface of low-carbon steel |
| CN102554163B (en) * | 2012-02-22 | 2014-12-10 | 河南省西保冶材集团有限公司 | Energy-saving and environment-friendly protecting material for slab continuous casting mold |
| CN102527963A (en) * | 2012-02-22 | 2012-07-04 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer protective material special for large round billet high-abrasion bearing steel |
| CN102527964A (en) * | 2012-02-22 | 2012-07-04 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer protective material special for steel plates with yield strength of over 390MPa |
| CN102554163A (en) * | 2012-02-22 | 2012-07-11 | 河南省西保冶材集团有限公司 | Energy-saving and environment-friendly protecting material for slab continuous casting mold |
| CN102527963B (en) * | 2012-02-22 | 2014-05-28 | 河南省西保冶材集团有限公司 | Continuous casting crystallizer protective material special for large round billet high-abrasion bearing steel |
| CN104128578A (en) * | 2014-06-18 | 2014-11-05 | 武汉钢铁(集团)公司 | Environment-friendly casting powder of continuous casting crystallizer for high-aluminum peritectic steel |
| CN104128578B (en) * | 2014-06-18 | 2016-06-29 | 武汉钢铁(集团)公司 | Environment-friendly type high alumina peritectic steel continuous crystallizer protecting slag |
| CN106735023A (en) * | 2016-12-30 | 2017-05-31 | 河南省西保冶材集团有限公司 | A kind of continuous-casting crystallizer especially used function protective material of hyperoxia glassed steel |
| CN106735023B (en) * | 2016-12-30 | 2019-04-05 | 河南省西保冶材集团有限公司 | A kind of continuous-casting crystallizer especially used function protective material of hyperoxia glassed steel |
| CN108838355A (en) * | 2018-07-09 | 2018-11-20 | 西峡龙成冶金材料有限公司 | A kind of continuous-casting crystallizer especially used covering slag of ESP low-carbon |
| CN110000352A (en) * | 2019-05-05 | 2019-07-12 | 西峡县西保冶金材料有限公司 | A kind of continuous-casting crystallizer especially used function protective material of plastic die steel |
| CN114769533A (en) * | 2022-03-31 | 2022-07-22 | 西峡县西保冶金材料有限公司 | Function protection material for continuous casting crystallizer for industrial pure iron |
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