CN113084105A - Low-reactivity casting powder containing yttrium oxide for high-aluminum steel - Google Patents
Low-reactivity casting powder containing yttrium oxide for high-aluminum steel Download PDFInfo
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- CN113084105A CN113084105A CN202110349170.0A CN202110349170A CN113084105A CN 113084105 A CN113084105 A CN 113084105A CN 202110349170 A CN202110349170 A CN 202110349170A CN 113084105 A CN113084105 A CN 113084105A
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- 239000010959 steel Substances 0.000 title claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 238000005266 casting Methods 0.000 title claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 32
- 239000000843 powder Substances 0.000 title claims abstract description 30
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 title claims abstract description 9
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims abstract description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 18
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 8
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 8
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 5
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims abstract description 4
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 claims description 19
- 230000008018 melting Effects 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 11
- 230000009466 transformation Effects 0.000 claims 1
- 238000009749 continuous casting Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 12
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 58
- 230000005855 radiation Effects 0.000 description 17
- 230000001681 protective effect Effects 0.000 description 15
- 238000005461 lubrication Methods 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 7
- 230000007704 transition Effects 0.000 description 6
- 229910000314 transition metal oxide Inorganic materials 0.000 description 5
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910002974 CaO–SiO2 Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910018516 Al—O Inorganic materials 0.000 description 1
- 206010003591 Ataxia Diseases 0.000 description 1
- 206010010947 Coordination abnormal Diseases 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000010443 kyanite Substances 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 208000028756 lack of coordination Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
Abstract
The invention discloses low-reactivity casting powder containing yttrium oxide for high-aluminum steel, which comprises the following components in percentage by weight: 25-40% of CaO and SiO2 5%~35%，Al2O3 10%~30%，Na2O 5%~10%，BaO 5%~15%，F‑ 5%~10%，MgO 1%~10%，B2O3 1%~10%，Li2O 1%~5%，Fe2O3 1%~5%，Y2O31-4 percent of the total weight of the composition, and the balance of inevitable impurities. The invention can play a good role in lubricating and controlling heat transfer in the continuous casting process of the high-aluminum steel, thereby ensuring the smooth running of the continuous casting process of the high-aluminum steel and obtaining the high-quality continuous casting high-aluminum steel.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to low-reactivity casting powder containing yttrium oxide for high-aluminum steel.
Background
During the continuous casting process of high-aluminum steel, CaO-SiO is traditionally adopted2When casting high-aluminum steel by using the protective slag, the SiO in the protective slag2High content of Al in molten steel]、[Mn]、[Ti]The alloy elements are reduced, thereby leading to the traditional CaO-SiO2SiO in the protective slag2The Si element is largely substituted and enters into the molten steel. Simultaneously in the molten steelAl and Mn are oxidized to form Al2O3And MnO enters a liquid slag layer, which causes the fluctuation of the components of the casting powder and influences the application performance of the on-site casting powder. The molten steel in the actual crystallizer reacts strongly with the covering slag, and Al generated by secondary oxidation of the molten steel2O3Inclusion and Al generated in refining process2O3Part of the impurities float up to the covering slag in the continuous casting process. These factors all result in the conventional CaO-SiO2The component of the systematic protective slag is obviously changed, and Al in the slag2O3The content is higher in the actual continuous casting process, physical properties such as viscosity, melting point, turning temperature and crystallization performance of the continuous casting material are obviously changed, even multiphase slag is formed, the uniformity and the flowing stability of liquid slag are damaged, the molten slag cannot smoothly enter a gap between a billet shell and a crystallizer, a uniform slag film is difficult to form, the lubrication and heat transfer conditions of the billet shell in a slag channel are extremely deteriorated, the defects such as cracks, depressions, slag entrapment and the like of a continuous casting billet occur, and even steel leakage accidents occur.
Many scholars at home and abroad have to overcome the problem, but the effect is not good enough. The most important difficulty is the lack of coordination between the lubrication of the casting billet by the mold flux in the mold and the control of heat transfer on the basis of reducing or avoiding the steel slag reaction. Therefore, researchers at home and abroad carry out a great deal of research and develop low-reaction CaO-SiO2-Al2O3Protecting slag.
At present, for CaO-SiO2-Al2O3Most researches on the heat transfer control function of the protective slag focus on the influence of components on the crystallization property, and although the influence of the steel slag reaction is considered, Al is ignored2O3The inclusion floating promotes the precipitation of high melting point ore phase and deteriorates the lubricating function. Because the aluminum content in the slag is higher, the peritectic point in the steel solidification process is shifted to the right, and the peritectic reaction behavior in the molten steel solidification process and the shrinkage behavior of the solidified shell in the crystallizer are aggravated. The high-aluminum steel casting blank is easy to have the problems of sinking, longitudinal cracking and the like, and higher requirements are provided for the heat transfer control of the covering slag. It has been reported that the amount of radiant heat transmitted through the slag film is reduced by adding FeO and MnO, but the object isCaO-SiO2The base mold flux, for high aluminum steel, is very reactive with Al and thus cannot be used for CaO-SiO2-Al2O3Protecting slag and reducing radiation heat transfer. Under the strong reducing environment of high Al, Mn and the like, how to adjust CaO-SiO2-Al2O3The radiation heat transfer of the slag is not reported.
Therefore, aiming at the high-aluminum steel which needs to ensure lubrication and properly weaken heat transfer, a special low-reactivity protective slag needs to be designed, so that the contradiction between the lubrication of the protective slag on a casting blank and the control of heat transfer is well coordinated on the basis of reducing or avoiding the reaction of steel slag, and the smooth operation of the continuous casting process of the high-aluminum steel is ensured.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the problem of CaO-SiO used for the existing high-aluminum steel2-Al2O3The protective slag has the problems that the protective slag can not play a good role in lubricating and controlling heat transfer on a casting blank and can not obtain high-quality continuous casting high-aluminum steel, and the low-reactivity protective slag for the high-aluminum steel containing yttria is provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
the low-reactivity casting powder for the high-aluminum steel containing the yttrium oxide is characterized by comprising the following components in percentage by weight:
CaO 25％～40％，SiO25％～35％，Al2O310％～30％，Na2O 5％～10％，BaO 5％～15％，F-5％～10％，MgO 1％～10％，B2O31％～10％，Li2O 1％～5％，Fe2O31％～5％，Y2O31 to 4 percent, and the balance of inevitable impurities.
Wherein the melting point of the covering slag is 950-1100 ℃, the transition temperature is 1000-1100 ℃, and the viscosity at 1300 ℃ is 0.10-0.20 Pa-s.
CaO is used as a main component of the covering slag, has wide source and low cost, and can not react with molten steel. With the increase of the content thereof, the viscosity of the mold flux is remarkably reduced, and the ability to absorb inclusions is improved. However, the CaO content is controlled within the range of 25 to 40 percent in the invention because the CaO is easily combined with other components to generate a high-melting-point crystalline mineral phase and the melting temperature is increased.
SiO2Is a network structure former in the casting powder, so that the casting powder slag forms a glass phase to facilitate the lubrication of casting blanks. But the aluminum alloy is easy to react with Al in molten steel, so that the components of the casting powder are changed, and the stability of the performance of the casting powder is influenced. SiO 22Too low a content may affect the formation of the glass phase and thus the lubrication, but too high a content may also form chain-like structures, destroying the lubrication. For lubrication and alkalinity considerations, the present invention combines SiO2The range is controlled to be 5-35%.
Al2O3Is a typical amphoteric oxide, can ensure the stability of the structure at a certain temperature as a most main network structure forming body, and properly increases Al2O3Concentration and reduction of SiO2Concentration of SiO can be reduced or suppressed2Reduction of (2). In the invention, Al is mixed with2O3The range is controlled to be 10-30%, preferably 15-30%.
BaO belongs to alkali metal, and the vitrification degree of the slag can be improved by replacing CaO in the covering slag, but because the melting point of the alkali metal is higher and the alkali metal is easy to combine with other components to generate a high-melting-point crystalline mineral phase, the BaO content is controlled to be 5-15 percent respectively.
Fe2O3Has strong oxidizability, and the amount of the Fe is controlled in a lower range so as to improve the anti-oxidation capability of the protective slag, so the Fe is added into the protective slag by the invention2O3The content is controlled within the range of 1 to 5 percent.
F-Is a main fluxing agent which can promote the generation of the kyanite, but under the environment of high-alkalinity slag, the CaF with higher content exists in a crystal form, so that the melting temperature is increased, and the invention uses the F-The content is controlled within the range of 5-10 percent.
Na2O is aThe main flux, but Na, is cheap2The O reacts with Al in the molten steel, and the separated Na-Al-O crystals are not beneficial to the heat transfer from the casting blank to the crystallizer, so the invention uses Na2The content of O is controlled to be 5 to 10 percent; li2O instead of Na2O is used as fluxing agent, the cost is high, but the effect on stabilizing the performance of the covering slag is obvious, and Li is used in the invention2The content of O is controlled within the range of 1 to 5 percent.
B2O3Belongs to an acidic oxide, is a network structure forming body, can coordinate the acidity and the alkalinity of the slag and improve the lubricity of the casting powder under the condition of low content, but can react with Al in the molten steel, so B is mixed with the molten steel2O3The content is controlled within the range of 1-10 percent.
Y2O3The main component for controlling radiation heat transfer of the casting powder by adding the casting powder is not reacted with Al in steel, so that the method is a good addition choice of the transition metal oxide. See Table 1, according to transition group metal oxide Y at 1500 deg.C2O3Equation and standard Gibbs free energy Δ G upon reaction with AlθY can be determined2O3Will not react with [ Al ] in molten steel]The reaction takes place. Therefore, the invention is applied to CaO-SiO2-Al2O3Transition metal oxides are added on the basis of the protective slag, so that the lubrication and heat transfer of a casting blank can be effectively coordinated and controlled, and the smooth operation of a continuous casting process can be ensured for high-aluminum steel which needs to ensure the lubrication and properly weaken the heat transfer.
TABLE 1 transition group metal oxides Y2O3Reaction with Al
Compared with the prior art, the invention has the following advantages:
the low-reactivity casting powder for the high-aluminum steel is CaO-SiO2-Al2O3The casting powder is prepared by adding transition metal oxide Y2O3On one hand, the addition of oxides such as FeO or MnO and the like in the casting powder is avoided, and the oxides such as FeO or MnO and the like and active metal [ Al ] in steel are avoided]The reaction causes the FeO or MnO in the slag to be reduced, weakens the capacity of reducing radiation heat transfer, and adds Y2O3And then, the radiation heat transfer quantity penetrating through the slag film can be effectively reduced, and the basic performances of the casting powder, such as the melting point, the transition temperature, the viscosity at 1300 ℃ and the like, are not influenced. Therefore, the casting powder provided by the invention can effectively coordinate and control the lubrication and heat transfer of the casting blank, ensure the smooth continuous casting process of high-aluminum steel and provide a new direction for further developing the low-reactivity crystallizer casting powder.
Detailed Description
The present invention will be further described with reference to the following examples.
The low-reactivity casting powder for the high-aluminum steel containing the yttrium oxide comprises the following components in percentage by weight:
CaO 25％～40％，SiO25％～35％，Al2O310％～30％，Na2O 5％～10％，BaO 5％～15％，F-5％～10％，MgO 1％～10％,B2O31％～10％，Li2O 1％～5％，Fe2O31％～5％，Y2O31 to 4 percent, and the balance of inevitable impurities.
Examples 1 to 5
Specific compositions of the low-reactivity mold flux for high-aluminum steel containing yttrium oxide in examples 1 to 5 are shown in Table 2. Example 1 raw slag (Y)2O3Addition amount of (2) is 0), Y in examples 2 to 52O3The addition amount of (b) was gradually increased to 4%.
TABLE 2 addition of Y2O3Chemical composition (wt%) of low reactivity mold flux for high aluminum steel
Examples 1-5 provide addition Y2O3The basic properties of the low-reactivity mold flux for high-aluminum steel of (1) are shown in Table 3.
TABLE 3 basic Properties of low-reactivity mold flux for high-aluminum steel in examples 1 to 5
From Table 3 it can be seen that different amounts of Y are added2O3Influence on the basic performance of the mold flux.
(1)Y2O3Influence of the content on the basic properties of the mold flux. It can be seen from the table that the slag of example 1 (raw slag, Y)2O30 wt%) viscosity ratio with Y2O3The maximum fluctuation range of the viscosity of the mold flux (examples 2 to 5) was 0.052 pas due to the increase of the content, and the overall influence was small. Addition of Y2O3The melting point of the post mold flux did not change too much. With Y2O3The content is increased, the turning temperature tends to be gradually increased, but the increasing amplitude is not obvious, so that the addition of Y into the raw slag is shown2O3Has little influence on the mold flux turning temperature. Overall, the transition metal oxide Y2O3Has limited influence on the viscosity, melting point and transition temperature of the low-reactivity mold flux slag, and meets the performance requirements of continuous casting on the mold flux.
(2)Y2O3Influence of the content on the radiation heat transfer performance of the mold flux. Also shown in Table 3 is Y2O3And (3) influence on radiation heat transfer of the covering slag, wherein the radiation heat transfer index phi represents the capability of the solid slag film for controlling radiation heat transfer, and the smaller the value of the radiation heat transfer index phi, the stronger the capability of the solid slag film for reducing radiation heat transfer. From the results in the table, CaO-SiO2-Al2O3The radiation heat transfer indexes of the protective slag in the embodiments 1-5 are all reduced to 0.125 from 0.144 of the original slag, and the reduction range reaches 13.2 percent. It can be seen that Y is added into the casting powder2O3Can be atThe radiant heat transfer amount is reduced to a certain extent.
Thus, in CaO-SiO2-Al2O3Y is added into the systematic protection slag2O3Has little influence on the basic performance of the casting powder and is along with Y in the casting powder2O3The content is increased, the radiation heat transfer index phi is gradually reduced, the radiation heat transfer through the slag film is weakened, the effect of reducing the radiation heat transfer can be achieved, and the performance of the slag film is better than that of the traditional CaO-SiO2-Al2O3The protective slag system can effectively coordinate and control the lubrication and heat transfer of the casting blank, and can ensure the smooth running of the high-aluminum steel continuous casting process.
In conclusion, the low-reactivity mold flux for the high-aluminum steel provided by the invention is CaO-SiO2-Al2O3The casting powder is prepared by adding transition metal oxide Y2O3On one hand, the addition of oxides such as FeO or MnO and the like in the casting powder is avoided, and the oxides such as FeO or MnO and the like and active metal [ Al ] in steel are avoided]The reaction causes the FeO or MnO in the slag to be reduced, weakens the capacity of reducing radiation heat transfer, and adds Y2O3And then, the radiation heat transfer quantity penetrating through the slag film can be effectively reduced, and the basic performances of the casting powder, such as the melting point, the transition temperature, the viscosity at 1300 ℃ and the like, are not influenced. Therefore, the casting powder provided by the invention can effectively coordinate and control the lubrication and heat transfer of the casting blank, ensure the smooth continuous casting process of high-aluminum steel and provide a new direction for further developing the low-reactivity crystallizer casting powder.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (2)
1. The low-reactivity casting powder for the high-aluminum steel containing the yttrium oxide is characterized by comprising the following components in percentage by weight:
CaO 25%~40%，SiO2 5%~35%，Al2O3 10%~30%，Na2O 5%~10%，BaO 5%~15%， F- 5%~10%，MgO 1%~10%，B2O3 1%~10%，Li2O 1%~5%，Fe2O3 1%~5%，Y2O31-4 percent of the total weight of the composition, and the balance of inevitable impurities.
2. The low-reactivity mold flux for high-aluminum steel containing yttrium oxide according to claim 1, wherein the mold flux has a melting point of 950 to 1100 ℃, a transformation temperature of 1000 to 1100 ℃, and a viscosity of 0.10 to 0.20Pa x s at 1300 ℃.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634726A (en) * | 2021-07-28 | 2021-11-12 | 武汉钢铁有限公司 | Free carbon-free covering slag for ultra-low carbon steel automobile plate |
| CN113953473A (en) * | 2021-11-22 | 2022-01-21 | 天津荣程联合钢铁集团有限公司 | Covering slag for continuous casting crystallizer and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389955A (en) * | 2011-11-26 | 2012-03-28 | 重庆大学 | Crystallizer casting powder for high-aluminum steel continuous casting |
| CN103909241A (en) * | 2014-03-20 | 2014-07-09 | 西峡县恒基冶材有限公司 | Crystallizer casting powder for high-aluminum steel continuous casting |
| CN105935750A (en) * | 2016-06-21 | 2016-09-14 | 唐山钢铁集团有限责任公司 | Continuous casting protective slag for high-boron steel |
| CN107470576A (en) * | 2017-09-05 | 2017-12-15 | 中南大学 | A kind of high manganese high-aluminum steel covering slag and its application containing di-iron trioxide |
| CN108213365A (en) * | 2018-01-11 | 2018-06-29 | 重庆大学 | A kind of non-reacted covering slag of high-aluminum steel |
| CN111570740A (en) * | 2020-05-29 | 2020-08-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous casting covering slag for high-aluminum steel and preparation method thereof |
-
2021
- 2021-03-31 CN CN202110349170.0A patent/CN113084105A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389955A (en) * | 2011-11-26 | 2012-03-28 | 重庆大学 | Crystallizer casting powder for high-aluminum steel continuous casting |
| CN103909241A (en) * | 2014-03-20 | 2014-07-09 | 西峡县恒基冶材有限公司 | Crystallizer casting powder for high-aluminum steel continuous casting |
| CN105935750A (en) * | 2016-06-21 | 2016-09-14 | 唐山钢铁集团有限责任公司 | Continuous casting protective slag for high-boron steel |
| CN107470576A (en) * | 2017-09-05 | 2017-12-15 | 中南大学 | A kind of high manganese high-aluminum steel covering slag and its application containing di-iron trioxide |
| CN108213365A (en) * | 2018-01-11 | 2018-06-29 | 重庆大学 | A kind of non-reacted covering slag of high-aluminum steel |
| CN111570740A (en) * | 2020-05-29 | 2020-08-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous casting covering slag for high-aluminum steel and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张少达: "高锰高铝钢保护渣润滑、结晶和辐射传热性能的研究", 《中国优秀博硕士学位论文全文数据库(博士)工程科技Ⅰ辑》 * |
| 甘美娟等: "Effects of Transition Metal Oxides ZrO2, Y2O3,and Sc2O3 on Radiative Heat Transfer of Low-Reactive CaO-Al2O3-Based Mold Slag", 《METALLURGICAL AND MATERIALS TRANSACTIONS B》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634726A (en) * | 2021-07-28 | 2021-11-12 | 武汉钢铁有限公司 | Free carbon-free covering slag for ultra-low carbon steel automobile plate |
| CN113953473A (en) * | 2021-11-22 | 2022-01-21 | 天津荣程联合钢铁集团有限公司 | Covering slag for continuous casting crystallizer and preparation method thereof |
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Application publication date: 20210709 |