CN104308104A - Novel casting powder and application thereof - Google Patents
Novel casting powder and application thereof Download PDFInfo
- Publication number
- CN104308104A CN104308104A CN201410481988.8A CN201410481988A CN104308104A CN 104308104 A CN104308104 A CN 104308104A CN 201410481988 A CN201410481988 A CN 201410481988A CN 104308104 A CN104308104 A CN 104308104A
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- covering slag
- casting
- mass percentage
- slag
- bearing steel
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to novel casting powder and application thereof, and belongs to the technical field of steel continuous casting powder. The casting powder comprises the following components according to mass percentage, 30-33% of CaO, 28-34% of SiO2, 2-5% of Al2O3, 1-3% of MgO, 12-16% of (Na2O+Li2O), 1-6% of B2O3, and 11-14% of F-. The casting powder has the characteristics of low melting point (950 to 1,050 DEG C), low viscosity (the viscosity is 0.06 to 0.10Pa.s at the temperature of 1,300 DEG C), high crystallization temperature (1,215 to 1,302 DEG C) and the like. The casting power designed by the invention is suitable for the continuous casting of high-carbon chromium-containing steel of which the mass percentage of C is 1.3-1.8% and the mass percentage of Cr is 10-15%. When the casting powder is applied to the continuous casting production of a high-carbon chromium-containing steel slab, Cr2O3 and other impurities with a high melting point in a crystallizer can be effectively absorbed, the infiltration capability of the casting powder is improved, and the slow cooling of a meniscus is implemented, so that the objectives of increasing the lubricating of a casting blank, controlling the heat transferring at the meniscus, reducing the cracking and inclusion of the casting blank and improving the quality of the casting blank are achieved.
Description
Technical field
The present invention relates to a kind of novel protected slag and application thereof; Belong to continuous casting of iron and steel covering slag technical field.
Background technology
As functional material important in casting process, covering slag plays adiabatic heat-insulation, prevents secondary oxidation of steel, absorbs nonmetal inclusion, lubricates the important function such as base shell and Heat Transfer Control in continuous cast mold.The quality of covering slag performance, directly decides slab quality, thus affects productivity effect.
High-carbon chrome-bearing steel is first as high-carbon steel, from Fe-C binary phase diagraml, along with the increase of carbon content in steel, the liquid-solid phase line temperature temperature difference of steel becomes large, therefore, it is interval that high-carbon steel has wider pasting temperature, more easily causes the segregation gross segregation of carbon and the impurity element such as phosphorus, sulphur, make high-carbon steel high-temp plastic poor, Testing Tensile Strength at Elevated Temperature is low; Simultaneously; high-carbon steel directly separates out austenite in process of setting from liquid steel; therefore initial solidification base shell shrinks little; under ferrostatic pressure effect, base shell contacts with crystallizer wall closely; covering slag is difficult to infiltrate, and makes the skewness of covering slag in crystallizer/strand gap, causes base shell because lubricating the bad and frictional force that is subject to and because conducting heat uneven and extra heat stress increase that is that produces; strand easily cracks, and produces bleedout accident time serious.Therefore, ensure that the matter of utmost importance that high-carbon chrome-bearing steel continuous casting carries out smoothly is the needs how meeting strand lubrication, this needs covering slag to have lower viscosity and fusion temperature.
Secondly the alloying elements cr added in high-carbon chrome-bearing steel, although adding of Cr significantly can improve steel product quality, Cr has a negative impact to whole production process.The O that Cr easily dissolves in air or in molten steel in steel-making, refining and casting cycle is combined, and produces a certain amount of high-melting-point Cr
2o
3oxide.After these refractory oxides enter crystallizer, can float and enter in covering slag, thus worsen covering slag performance, suppress covering slag crystallization.Thus make covering slag effectively cannot control the heat transfer of meniscus place, realize the slow cooling of meniscus, finally cause strand in high-carbon chrome-bearing steel casting process produce a large amount of lobe and be mingled with, have a strong impact on slab quality.Therefore, this to require that again covering slag can have stronger crystallization temperature high.
From the situation of literature search; there are some at present for the covering slag of high-carbon steel continuous casting Process Design and exploitation; as the patent " CSP sheet billet high-carbon steel continuous casting pouring slag " that publication number is CN 102101162A, the patent " high-carbon steel continuous crystallizer protecting slag " of publication number to be the patent " continuous casting mold flux for high-carbon cutting mold steel " of CN 102335731A and publication number be CN 103223477A.But these covering slags all do not consider the high-melting-point Cr that the Cr element oxide in high-carbon chrome-bearing steel is formed
2o
3on the impact of covering slag penalty; and the strand produced therefrom produces a large amount of lobe and the problem such as to be mingled with; therefore these covering slags are not suitable for slab caster and produce high-carbon chrome-bearing steel; especially be not suitable for slab caster produce C mass percentage 1.3 ~ 1.8%, Cr mass percentage 10 ~ 15% high-carbon chrome-bearing steel strand product
Summary of the invention
The object of the invention is for the deficiencies in the prior art, provides a kind of reasonable mixture ratio of components, viscosity are low, fusing point is low, crystallization temperature is high covering slag and the application in high-carbon chrome-bearing steel thereof.
A kind of covering slag of the present invention, comprises following component by percentage to the quality:
CaO 30 ~ 33%, is preferably 30-32%, more preferably 30.2-31.8%;
SiO
228 ~ 34%, be preferably 28-31%, more preferably 28.7-30.2%;
Al
2o
32 ~ 5%, be preferably 3-4%, more preferably 3.2-3.8%;
MgO 1 ~ 3%, is preferably 1.5-2.5%, more preferably 1.8-2.2%;
(Na
2o+Li
2o) 12 ~ 16%, be preferably 14-16%, more preferably 14.5-15.5%;
B
2o
31 ~ 6%, be preferably 2-5%, more preferably 2.5-3.2%;
F
-11 ~ 14%; Be preferably 11.5-13.5%, more preferably 12-13%.
In covering slag of the present invention, CaO and SiO
2mass ratio is 0.95 ~ 1.15:1.Be preferably 1.0-1.15:1, more preferably 1.05-1.15:1.
In covering slag of the present invention, described F
-with CaF
2, NaF, Na
3alF
6in any one form allocate covering slag into.
The melting range of covering slag of the present invention is 950 ~ 1050 DEG C, and the range of viscosities of 1300 DEG C is 0.06 ~ 0.10Pas, and crystallization range is 1215 ~ 1302 DEG C.
In covering slag of the present invention, Na
2o and Li
2the mass ratio of O is 3 ~ 9:1, is preferably 4 ~ 8:1, more preferably 6-7:1.
The application of covering slag of the present invention, comprises and is used as chrome-bearing steel continuous casting covering slag.
The application of covering slag of the present invention, in described chrome-bearing steel, Cr mass percentage is 10 ~ 15%.
The application of covering slag of the present invention, in described chrome-bearing steel, C mass percentage is 1.3 ~ 1.8%.
Principle and advantage
Principle
In covering slag of the present invention, add B
2o
3main Function be: pass through B
2o
3with the synergy of other components, dissolve Cr at increase covering slag
2o
3ability simultaneously, the fusing point of covering slag is controlled at 950 ~ 1050 DEG C.B
2o
3used in amounts strictly controls, and covering slag fusing point too much can be caused too low, and covering slag melting rate is too fast, causes covering slag heat insulation and preservation effect bad; Conversely, B
2o
3consumption is too low, then do not reach to absorb completely to dissolve Cr
2o
3effect.
In covering slag of the present invention, add Na
2o and Li
2the main purpose of O is: by control Na
2o and Li
2the synergy of the mass ratio of O and the two and other constituent elements, especially Na
2o, Li
2o and B
2o
3synergy, achieve the object reducing covering slag viscosity, also achieve the object reducing covering slag fusing point simultaneously.
The present invention is by control CaO and SiO
2mass ratio is 0.95 ~ 1.15 and F
-the main purpose of 10 ~ 13% guarantees that covering slag has stronger crystallizing power, realizes the place's slow cooling of crystallizer meniscus.
The advantage that the present invention compared with prior art has
1) high-melting-point Cr is absorbed
2o
3the ability of field trash is strong; The present invention, under the synergy of other components, makes B
2o
3energy and Cr
2o
3in conjunction with low-melting compound can be formed, thus make the high-melting-point Cr that in molten steel, alloying elements cr oxidation generates
2o
3field trash, can melt fast in covering slag, thus reduces covering slag fusing point and viscosity.
2) fusing point and viscosity low.By adding flux Na
2o and Li
2mass ratio both O also controls, under the synergy of each constituent element, reduces fusing point and the viscosity of covering slag, thus increases the consumption of covering slag in casting process, ensures that strand obtains good lubrication.
3) crystal property is good.By control CaO and SiO
2mass ratio, the namely dual alkalinity of covering slag, by control CaF
2addition, improve covering slag crystallizing power, make crystallizer menisci place can form one deck covering slag crystallizing layer fast, reduce meniscus place heat transfer, realize meniscus slow cooling.
In sum, a kind of covering slag provided by the invention, has that fusing point is low, viscosity is low, and crystallization temperature is high, and melts, absorbs high-melting-point Cr
2o
3the advantages such as field trash ability is strong.Cr in crystallizer is absorbed effective
2o
3while contour melting point inclusions, covering slag penetrating power can be improved and control the heat transfer of meniscus place, thus realize the slow cooling of strand effectively lubricating and meniscus, the defect such as significantly reduce strand lobe and be mingled with, significantly improve slab quality and productivity effect.Be applicable to the continuous casting of high-carbon chrome-bearing steel.
Detailed description of the invention
Below in conjunction with example, the invention will be further elaborated, and example only for illustration of the present invention, instead of limits the present invention in any form.
The fusion temperature of covering slag of the present invention, the viscosity of 1300 DEG C adopt metallurgy industry standard YB/T186 and YB/T185 to measure respectively.Crystallization temperature adopts the heat wire method of industry universal to measure.First by covering slag raw material according to target composition weighing mixing in test process; then intermediate frequency furnace fusing is adopted; make its uniform composition, then molten state slag is poured into water chilling and obtains glassy state covering slag block, after finally block covering slag being milled into powder by covering slag, carry out heated filament experiment.In heat wire method measuring and protecting slag crystallization temperature process; first the thermocouple being loaded with covering slag is warming up to 1500 DEG C; lower the temperature with the cooldown rate of 20 DEG C/s after 3 minutes in insulation; by being connected to the time of crystallize out in the cameras observe record protection slag on light microscope; search according to this time the covering slag temperature that computer acquisition arrives again, thus accurately obtain the crystallization temperature of covering slag.
Embodiment 1
A kind of covering slag, its composition quality percentage composition is: CaO:30.2%, SiO
2: 31.7%, Al
2o
3: 3.6%, MgO:2.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=4.3:1 mass ratio), B
2o
3: 3.1%, F
-: 13.5%.The basicity CaO/SiO of this covering slag
2be 0.95.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 10%, C mass percentage is 1.3%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.25%.
Embodiment 2
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:31.7%, SiO
2: 30.2%, Al
2o
3: 3.6%, MgO:2.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=6.9:1 mass ratio), B
2o
3: 3.1%, F
-: 13.5%.The basicity CaO/SiO of this covering slag
2be 1.05.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 11%, C mass percentage is 1.4%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.23%.
Embodiment 3
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:33.0%, SiO
2: 28.7%, Al
2o
3: 3.6%, MgO:2.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=6.9:1 mass ratio), B
2o
3: 3.2%, F
-: 13.6%.The basicity CaO/SiO of this covering slag
2be 1.15.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 12%, C mass percentage is 1.5%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.12%.
Embodiment 4
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:31.0%, SiO
2: 29.5%, Al
2o
3: 5.0%, MgO:2.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=7.5:1 mass ratio), B
2o
3: 3.1%, F
-: 13.5%.The basicity CaO/SiO of this covering slag
2be 1.05.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 13%, C mass percentage is 1.6%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.15%.
Embodiment 5
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:32.2%, SiO
2: 30.7%, Al
2o
3: 3.6%, MgO:1.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=6.9:1 mass ratio), B
2o
3: 3.1%, F
-: 13.5%.The basicity of this covering slag is CaO/SiO
2be 1.05.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 14%, C mass percentage is 1.7%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.21%.
Embodiment 6
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:31.2%, SiO
2: 29.7%, Al
2o
3: 3.6%, MgO:3.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=6.9:1 mass ratio), B
2o
3: 3.1%, F
-: 13.5%.The basicity CaO/SiO of this covering slag
2be 1.05.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 15%, C mass percentage is 1.8%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.52%.
Embodiment 7
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:34.2%, SiO
2: 32.6%, Al
2o
3: 3.6%, MgO:2.0%, (Na
2o+Li
2o): 11.0% (Na
2o/Li
2o=4.5:1 mass ratio), B
2o
3: 3.1%, F
-: 13.5%.The basicity CaO/SiO of this covering slag
2be 1.05.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 15%, C mass percentage is 1.3%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.62%.
Embodiment 8
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:32.8%, SiO
2: 31.2%, Al
2o
3: 3.6%, MgO:2.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=6.9:1 mass ratio), B
2o
3: 1.0%, F
-: 13.5%.The basicity of this covering slag is CaO/SiO
2be 1.05.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 10%, C mass percentage is 1.8%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.46%.
Embodiment 9
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:30.2%, SiO
2: 28.8%, Al
2o
3: 3.6%, MgO:2.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=6.9:1 mass ratio), B
2o
3: 6.0%, F
-: 13.5%.The basicity CaO/SiO of this covering slag
2be 1.05.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 12%, C mass percentage is 1.3%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.33%.
Embodiment 10
A kind of high-carbon chrome-bearing steel continuous crystallizer protecting slag, its composition quality percentage composition is: CaO:33.0%, SiO
2: 31.4%, Al
2o
3: 3.6%, MgO:2.0%, (Na
2o+Li
2o): 15.9% (Na
2o/Li
2o=6.9:1 mass ratio), B
2o
3: 3.1%, F
-: 11.0%.The basicity CaO/SiO of this covering slag
2be 1.05.The main physical index of the covering slag adopting said method to record is shown in Table 1.The chrome-bearing steel continuous casting that covering slag Cr mass percentage designed by this embodiment is 13%, C mass percentage is 1..5%; The probability that gained strand lobe and situation about being mingled with occur is lower than 0.26%.
The main physical parameter of table 1 covering slag
| Performance indications | Fusing point (DEG C) | Viscosity (Pas) at 1300 DEG C | Crystallization temperature (DEG C) |
| Embodiment 1 | 976 | 0.09 | 1223 |
| Embodiment 2 | 993 | 0.07 | 1285 |
| Embodiment 3 | 1038 | 0.05 | 1296 |
| Embodiment 4 | 982 | 0.07 | 1280 |
| Embodiment 5 | 987 | 0.08 | 1275 |
| Embodiment 6 | 1006 | 0.06 | 1290 |
| Embodiment 7 | 1023 | 0.10 | 1218 |
| Embodiment 8 | 1017 | 0.08 | 1291 |
| Embodiment 9 | 952 | 0.07 | 1246 |
| Embodiment 10 | 1010 | 0.01 | 1251 |
Claims (10)
1. a covering slag, is characterized in that, comprises following component by percentage to the quality:
2. covering slag according to claim 1, is characterized in that: comprise following component by percentage to the quality:
3. covering slag according to claim 2, is characterized in that: comprise following component by percentage to the quality:
4. covering slag according to claim 1, is characterized in that: in covering slag, CaO and SiO
2mass ratio is 0.95 ~ 1.15:1.
5. covering slag according to claim 1, is characterized in that: in covering slag, described F
-with CaF
2, NaF, Na
3alF
6in any one form allocate covering slag into.
6. the covering slag according to claim 1 any one, is characterized in that: the fusing point of described covering slag is that the viscosity of 950 ~ 1050 DEG C, 1300 DEG C is 0.06 ~ 0.10Pas, crystallization temperature is 1215 ~ 1302 DEG C.
7. the covering slag according to claim 1 any one, is characterized in that: in described covering slag, Na
2o and Li
2the mass ratio of O is 3 ~ 9:1.
8. the application of covering slag as described in claim 1-7 any one, is characterized in that: comprise as chrome-bearing steel continuous casting covering slag.
9. the application of a kind of covering slag according to claim 8, is characterized in that: in described chrome-bearing steel, Cr mass percentage is 10 ~ 15%.
10. the application of a kind of covering slag according to claim 8, is characterized in that: in described chrome-bearing steel, C mass percentage is 1.3 ~ 1.8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481988.8A CN104308104A (en) | 2014-09-19 | 2014-09-19 | Novel casting powder and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481988.8A CN104308104A (en) | 2014-09-19 | 2014-09-19 | Novel casting powder and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104308104A true CN104308104A (en) | 2015-01-28 |
Family
ID=52363493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410481988.8A Withdrawn CN104308104A (en) | 2014-09-19 | 2014-09-19 | Novel casting powder and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104308104A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607608A (en) * | 2015-01-29 | 2015-05-13 | 中南大学 | Novel medium manganese steel casting powder for automobile and application thereof |
| CN104874755A (en) * | 2015-05-25 | 2015-09-02 | 中南大学 | Tundish covering agent used for chrome-bearing steel and application thereof |
| CN105642848A (en) * | 2016-02-23 | 2016-06-08 | 宝钢特钢有限公司 | Continuous casting mould fluxes for high-carbon steel |
| CN106001473A (en) * | 2016-06-24 | 2016-10-12 | 中南大学 | Protective slag for chromium-containing steel continuous-casting crystallizer and application of protective slag |
| CN110918914A (en) * | 2019-11-29 | 2020-03-27 | 西峡龙成冶金材料有限公司 | Continuous casting crystallizer casting powder of super wear-resistant steel, preparation method and application |
| CN112391541A (en) * | 2019-08-14 | 2021-02-23 | 山特维克材料技术公司 | Mold flux and method for manufacturing nickel-based alloy |
| CN112605356A (en) * | 2020-12-16 | 2021-04-06 | 西峡龙成冶金材料有限公司 | Special covering slag for austenitic stainless steel continuous casting crystallizer and application thereof |
| CN112620598A (en) * | 2020-12-16 | 2021-04-09 | 西峡龙成冶金材料有限公司 | Continuous casting crystallizer casting powder special for sorbite stainless steel and application thereof |
| CN113584254A (en) * | 2021-07-28 | 2021-11-02 | 北京首钢股份有限公司 | Method for reducing longitudinal crack incidence rate of ultrahigh carbon steel casting blank |
| CN114247860A (en) * | 2020-09-21 | 2022-03-29 | 上海梅山钢铁股份有限公司 | Continuous casting crystallizer casting powder for casting medium carbon steel |
| CN114472823A (en) * | 2021-12-29 | 2022-05-13 | 武钢中冶工业技术服务有限公司 | Crystallizer casting powder |
-
2014
- 2014-09-19 CN CN201410481988.8A patent/CN104308104A/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607608A (en) * | 2015-01-29 | 2015-05-13 | 中南大学 | Novel medium manganese steel casting powder for automobile and application thereof |
| CN104874755A (en) * | 2015-05-25 | 2015-09-02 | 中南大学 | Tundish covering agent used for chrome-bearing steel and application thereof |
| CN105642848A (en) * | 2016-02-23 | 2016-06-08 | 宝钢特钢有限公司 | Continuous casting mould fluxes for high-carbon steel |
| CN106001473A (en) * | 2016-06-24 | 2016-10-12 | 中南大学 | Protective slag for chromium-containing steel continuous-casting crystallizer and application of protective slag |
| CN106001473B (en) * | 2016-06-24 | 2018-12-25 | 中南大学 | A kind of chrome-bearing steel continuous crystallizer protecting slag and its application |
| CN112391541A (en) * | 2019-08-14 | 2021-02-23 | 山特维克材料技术公司 | Mold flux and method for manufacturing nickel-based alloy |
| CN110918914A (en) * | 2019-11-29 | 2020-03-27 | 西峡龙成冶金材料有限公司 | Continuous casting crystallizer casting powder of super wear-resistant steel, preparation method and application |
| CN114247860A (en) * | 2020-09-21 | 2022-03-29 | 上海梅山钢铁股份有限公司 | Continuous casting crystallizer casting powder for casting medium carbon steel |
| CN112605356A (en) * | 2020-12-16 | 2021-04-06 | 西峡龙成冶金材料有限公司 | Special covering slag for austenitic stainless steel continuous casting crystallizer and application thereof |
| CN112620598A (en) * | 2020-12-16 | 2021-04-09 | 西峡龙成冶金材料有限公司 | Continuous casting crystallizer casting powder special for sorbite stainless steel and application thereof |
| CN112620598B (en) * | 2020-12-16 | 2022-02-11 | 西峡龙成冶金材料有限公司 | Continuous casting crystallizer casting powder special for sorbite stainless steel and application thereof |
| CN113584254A (en) * | 2021-07-28 | 2021-11-02 | 北京首钢股份有限公司 | Method for reducing longitudinal crack incidence rate of ultrahigh carbon steel casting blank |
| CN114472823A (en) * | 2021-12-29 | 2022-05-13 | 武钢中冶工业技术服务有限公司 | Crystallizer casting powder |
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Application publication date: 20150128 |