CN113351843A - Continuous casting method and device for iron-chromium-aluminum alloy - Google Patents
Continuous casting method and device for iron-chromium-aluminum alloy Download PDFInfo
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- CN113351843A CN113351843A CN202110617696.2A CN202110617696A CN113351843A CN 113351843 A CN113351843 A CN 113351843A CN 202110617696 A CN202110617696 A CN 202110617696A CN 113351843 A CN113351843 A CN 113351843A
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 71
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- -1 iron-chromium-aluminum Chemical compound 0.000 title claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 58
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000005275 alloying Methods 0.000 claims abstract description 32
- 239000000956 alloy Substances 0.000 claims abstract description 28
- 238000005266 casting Methods 0.000 claims abstract description 22
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000012452 mother liquor Substances 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 28
- 229910045601 alloy Inorganic materials 0.000 claims description 25
- 239000002893 slag Substances 0.000 claims description 18
- 238000007670 refining Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910017060 Fe Cr Inorganic materials 0.000 claims 1
- 229910002544 Fe-Cr Inorganic materials 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 230000024121 nodulation Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910000600 Ba alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- OOJQNBIDYDPHHE-UHFFFAOYSA-N barium silicon Chemical compound [Si].[Ba] OOJQNBIDYDPHHE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- B22D11/14—Plants for continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a continuous casting method and a continuous casting device for iron-chromium-aluminum alloy, which comprise a continuous casting ladle, wherein the continuous casting ladle is connected with a tundish, the tundish is provided with an aluminum alloying area and a casting area communicated with the aluminum alloying area, an iron-chromium mother liquor inlet of the aluminum alloying area is connected with the continuous casting ladle, a molten aluminum inlet of the aluminum alloying area is connected with an induction furnace for melting aluminum alloy, and a crystallizer connected with the casting area. The aluminum alloying in the tundish solves the problem that a large amount of Al is generated between the ladle and the tundish due to the oxidation of aluminum during the continuous casting of high aluminum alloy2O3The problem of continuous casting nozzle nodulation is caused by inclusion, and multi-furnace continuous casting of more than 3 furnaces is realized.
Description
Technical Field
The invention relates to a manufacturing method of iron-chromium-aluminum alloy, which can realize continuous casting of the iron-chromium-aluminum alloy in more than 3 furnaces, reduce the production cost and improve the production efficiency.
Background
The iron-chromium-aluminum high-temperature alloy has low thermal expansion coefficient, strong high-temperature oxidation resistance and low production cost, is a commonly used material for the carrier of the exhaust purifier of the internal combustion engine, and the typical components of the high-temperature alloy for the metal carrier of the exhaust purifier of the internal combustion engine at home and abroad at present are C: 0.05%, Si: 0.40%, Al: 3.50-6.00%, Cr: 17.0-20.0%, RE: 0.02 to 0.12 percent, and the balance of Fe.
The conventional FeCrAl alloy is smelted by an induction furnace, and the problems of poor alloy cleanliness, high cost and the like exist. In order to adapt to the purpose of producing high-quality FeCrAl in a large scale, an electric furnace-AOD-LF refining-continuous casting-hot rolling-cold rolling process is developed to produce alloy foils, but because the content of alloy aluminum is high, the nodulation of a continuous casting nozzle is caused by the oxidation of aluminum in the casting process from a ladle to a tundish, the cleanliness of the alloy is influenced, the number of continuous casting furnaces is generally within 2 furnaces, the continuity and yield of production are seriously influenced, and the production cost is high.
Disclosure of Invention
The invention provides a continuous casting method and a device of iron-chromium-aluminum alloy, which solve the problem that a large amount of Al is generated between a steel ladle and a tundish due to aluminum oxidation during high aluminum alloy continuous casting by aluminum alloying in the tundish2O3The problem of continuous casting nozzle nodulation is caused by inclusion, and multi-furnace continuous casting of more than 3 furnaces is realized.
The technical scheme disclosed by the invention is as follows: the utility model provides a continuous casting device of iron chromium aluminium alloy, includes the continuous casting ladle, and the continuous casting ladle is connected the tundish, and the tundish has the regional and casting area with the regional intercommunication of aluminium alloying, and the regional iron chromium mother liquor access connection continuous casting ladle of aluminium alloying, the regional aluminium liquid access connection of aluminium alloying melting induction furnace of aluminium alloy, the crystallizer of casting area connection.
On the basis of the scheme, the continuous casting ladle is preferably arranged on a continuous casting ladle rotary table, and the continuous casting ladle rotary table is arranged on a continuous casting platform.
On the basis of the scheme, preferably, the crystallizer is arranged on the continuous casting platform, and the induction furnace for melting the aluminum alloy is connected with the tundish trolley.
On the basis of the scheme, the aluminum alloying zone preferably comprises a zone A and a zone B which are communicated through a channel I, wherein the zone A is provided with an iron-chromium mother liquor inlet, the zone B is provided with an aluminum liquid inlet, the zone B is communicated with the zone C through a channel II, the height of the channel II is higher than that of the channel I, the zone C is communicated with the zone D through a channel III, the height of the channel III is lower than that of the channel II, the zone D is communicated with the zone E through a channel IV, the height of the channel IV is lower than that of the channel III, the casting zone is a zone F communicated with the zone E through a channel V, and the height of the channel V is lower than that of the channel IV.
On the basis of the scheme, preferably, the first channel and the third channel are located at the central position of the retaining wall, and the second channel, the fourth channel and the fifth channel are located in the 1/3 position area of the retaining wall close to the casting steel position side.
In addition to the above-mentioned scheme, preferably, the height of the first channel is 200mm, the height of the second channel is 800mm, the height of the third channel is 600mm, the height of the fourth channel is 400mm, the height of the fifth channel is 200mm, and the diameters of the first channel, the second channel, the third channel, the fourth channel and the fifth channel are 100 mm.
On the basis of the above scheme, preferably, the height of the retaining wall between the A, B, C and D regions is 1000mm, the height of the retaining wall between the E and F regions is 1200mm, and the thickness of the retaining wall is 100 mm.
A method of continuously casting an iron-chromium-aluminum alloy, comprising:
a: adding premelted refining slag in A, B area;
b: respectively injecting aluminum liquid and iron-chromium mother liquor into the A, B area to enable the premelted refining slag to be melted and float on the surfaces of the aluminum liquid and the iron-chromium mother liquor, so that the aluminum liquid and the iron-chromium mother liquor are alloyed under the environment of isolating oxygen and sequentially flow to the C, D, E, F area;
c: when the height of the alloy liquid in the area E reaches more than 400mm, adding premelted refining slag in C, D and E areas respectively;
d: and when the height of the alloy liquid in the F area reaches 800mm, starting the stopper rod by the tundish for continuous casting, and adding tundish covering slag in the F area.
In addition to the above-mentioned aspects, the premelted refining slag preferably contains CaO 60-70%, Al2O3:15-25％、SiO2≤5％、CaF2:2-5％。
On the basis of the above scheme, preferably, the mold flux comprises the following components: CaO: 40-50%; SiO 22：30-40％；C：0-25％；Al2O3：Na2O+K2O：0-15％。
Compared with the prior art, the invention has the following beneficial effects:
the aluminum alloying of the Fe-Cr-Al alloy is carried out in the tundish, thereby preventing the aluminum from being cast twice from the ladle to the tundish in the continuous casting processOxidation to Al2O3Inclusions cause the clogging of the continuous casting nozzle.
The cleaning treatment of the alloy mother liquor is to perform alloying, decarburization and refining of chromium element in a conventional electric furnace, AOD and ladle refining furnace, and to feed 1-2 m/ton of silicon-barium alloy wire into the refined mother liquor before casting, the Ba content in the alloy is required to be more than or equal to 30%, and the alloy is directly continuously cast without soft blowing after wire feeding.
The tundish is used for melting metal aluminum by an induction furnace, and molten metal aluminum liquid is directly injected into an alloying reactor built in the tundish for alloying through controlling the flow of a sliding nozzle arranged at the bottom of the induction furnace, so that the tasks of aluminum alloying and component uniformity of iron-chromium-aluminum alloy are completed in the alloying reactor.
Drawings
FIG. 1 is a schematic diagram of a tundish configuration;
FIG. 2 is a schematic diagram of the structure of a channel;
fig. 3 is a system block diagram of the continuous casting apparatus.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
The main factor influencing the continuous casting of the iron-chromium-aluminum alloy through analysis is that Al in the alloy is caused by a large amount of oxidation of aluminum between a ladle and a tundish in the continuous casting process2O3The inclusion is obviously increased, and simultaneously, because no effective tundish metallurgical measures are available, the Al generated by secondary oxidation is added2O3The inclusions are removed, eventually leading to severe clogging of the continuous casting nozzle. Although the whole-process protective casting technology from the ladle to the tundish is developed for the protective casting from the continuous casting ladle to the tundish, the measure cannot completely avoid Al due to the high aluminum content in the iron-chromium-aluminum alloy2O3Formation of inclusions。
Considering that Al is generated in the continuous casting process of the iron-chromium-aluminum alloy2O3The main link of the method is that the aluminum is placed into a tundish after the alloying process of the aluminum is carried out between a continuous casting ladle and the tundish, the structural schematic diagram of the tundish designed for the purpose is shown in figure 1, wherein 11 is a tundish continuous casting pouring water gap arranged in an F area and is used for being communicated with a crystallizer; and 12 is an aluminum alloying area retaining wall, 13 is an aluminum pouring area flow stabilizer, namely an aluminum liquid inlet, 14 is an iron-chromium mother liquid pouring area flow stabilizer, namely an iron-chromium mother liquid inlet, and 15 is a masonry retaining wall in the tundish, and the flow field of the alloy in the tundish is optimized through the retaining walls and channels on the retaining walls, so that the alloying and the component uniformity of aluminum are realized.
More specifically, as shown in fig. 1 and 2, the tundish comprises an aluminum alloying zone and a casting zone communicated with the aluminum alloying zone, wherein the aluminum alloying zone comprises a zone a and a zone B which are communicated through a channel one 16, the zone a is provided with an iron-chromium mother liquor inlet, the zone B is provided with an aluminum liquor inlet, the zone B is communicated with a zone C through a channel two 17, the height of the channel two is higher than that of the channel one, the zone C is communicated with the zone D through a channel three 18, the height of the channel three is lower than that of the channel two, the zone D is communicated with the zone E through a channel four 19, the height of the channel four is lower than that of the channel three, the casting zone is a zone F communicated with the zone E through a channel five 20, and the height of the channel five is lower than that of the channel four.
The first channel and the third channel are located in the center of the retaining wall, and the second channel, the fourth channel and the fifth channel are located in the 1/3 position area of the retaining wall close to the side where the steel is poured.
The height of the first channel is 200mm, the height of the second channel is 800mm, the height of the third channel is 600mm, the height of the fourth channel is 400mm, the height of the fifth channel is 200mm, and the diameters of the first channel, the second channel, the third channel, the fourth channel and the fifth channel are 100 mm.
A. B, C, the height of the wall between the four areas D is 1000mm, the height of the wall between the areas E and F is 1200mm, and the thickness of the wall is 100 mm.
The relative positions of a steel ladle, a tundish and an induction furnace for melting alloy in the continuous casting process are shown in figure 3, wherein 1 is a continuous casting platform, 2 is a continuous casting steel ladle rotary table, 3 is the continuous casting steel ladle, 4 is a long nozzle for protecting pouring between the steel ladle and the tundish and used for connecting an iron-chromium mother liquor inlet and the continuous casting steel ladle, 5 is the continuous casting tundish, also called the tundish for short, 6 is the induction furnace for melting aluminum alloy, 7 is a tundish trolley, 8 is a protecting pouring nozzle from the induction furnace to the tundish and used for connecting an aluminum liquid inlet and the induction furnace, 9 is a submerged nozzle from the tundish to crystallization and used for connecting a crystallizer and the tundish, and 10 is the continuous casting crystallizer platform, called the crystallizer for short. The continuous casting process is that iron-chromium mother liquor after being cleaned is hoisted to a continuous casting ladle revolving platform through a crown block, mother alloy is poured into a tundish through a protective pouring long nozzle, meanwhile molten aluminum melted through an induction furnace is also poured into the tundish according to the content proportion of aluminum alloy, aluminum alloying is realized in a B area of the tundish, and the alloyed alloy liquor in the B area respectively flows through C, D, E areas and finally enters an F area for pouring. The alloy flow direction in the tundish is shown in figure 3.
More specifically, the continuous casting device comprises a continuous casting ladle, the continuous casting ladle is connected with a tundish, the tundish is provided with an aluminum alloying area and a casting area communicated with the aluminum alloying area, an iron-chromium mother liquid inlet of the aluminum alloying area is connected with the continuous casting ladle, an aluminum liquid inlet of the aluminum alloying area is connected with an induction furnace for melting aluminum alloy, a crystallizer is connected with the casting area, the continuous casting ladle is installed on a continuous casting ladle revolving platform, the continuous casting ladle revolving platform is installed on a continuous casting platform, the crystallizer is installed on the continuous casting platform, and the induction furnace for melting aluminum alloy is connected with a tundish trolley.
When the pouring is started, premelted refining slag is added in an A, B area, and the refining slag comprises 60-70% of CaO; al (Al)2O3:15-25％；SiO2≤5％；CaF22-5 percent. When the height of the alloy liquid in the zone E reaches more than 400mm, premelted refining slag is added into the zones C, D and E respectively. When the height of the alloy liquid in the F area reaches 800mm, the tundish starts the stopper rod for continuous casting, and meanwhile, tundish covering slag is added in the F area, wherein the covering slag comprises the following components: CaO: 40-50%; SiO 22：30-40％；C：0-25％；Al2O3：Na2O+K2O: 0-15% of a base mold flux. The height of the alloy liquid is always kept at 900mm in the whole casting process.
The premelted refining slag has the characteristic of low melting point, and a small amount of Al can be produced in the region where the aluminum liquid and the iron-chromium mother liquid are added into A, B2O3But the pre-melted refining slag floats to the surface of the aluminum liquid and the iron-chromium mother liquid, so that the air is isolated and the oxidation is prevented.
The carbon contained in the covering slag is burnt due to high temperature during adding, so that the temperature of the alloy liquid can be prevented from being reduced, and the alloy liquid can be isolated from contacting with air.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The continuous casting device for the iron-chromium-aluminum alloy is characterized by comprising a continuous casting ladle, wherein the continuous casting ladle is connected with a tundish, the tundish is provided with an aluminum alloying area and a casting area communicated with the aluminum alloying area, an iron-chromium mother liquor inlet of the aluminum alloying area is connected with the continuous casting ladle, a molten aluminum inlet of the aluminum alloying area is connected with an induction furnace for melting aluminum alloy, and a crystallizer connected with the casting area.
2. The apparatus for continuously casting an Fe-Cr-Al alloy as claimed in claim 1, wherein the continuous casting ladle is mounted on a continuous casting ladle turret mounted on the continuous casting platform.
3. An apparatus for continuously casting Fe-Cr-Al alloy as claimed in claim 1, wherein the mold is installed on a continuous casting platform, and the induction furnace for melting the Al alloy is connected to a tundish carriage.
4. The continuous casting apparatus for Fe-Cr-Al alloy as claimed in claim 1, wherein the Al alloying zone comprises a zone A and a zone B which are communicated with each other through a channel I, the zone A is provided with an Fe-Cr mother liquor inlet, the zone B is provided with an aluminum liquor inlet, the zone B is communicated with a zone C through a channel II, the height of the channel II is higher than that of the channel I, the zone C is communicated with a zone D through a channel III, the height of the channel III is lower than that of the channel II, the zone D is communicated with the zone E through a channel IV, the height of the channel IV is lower than that of the channel III, the casting zone is a zone F communicated with the zone E through a channel V, and the height of the channel V is lower than that of the channel IV.
5. The continuous casting tundish of Fe-Cr-Al alloy according to claim 1, wherein the first and third channels are located at the center of the dam, and the second, fourth and fifth channels are located at the 1/3 th area of the dam on the side near the position where the steel is poured.
6. The continuous casting tundish of Fe-Cr-Al alloy according to claim 1, wherein the height of channel one is 200mm, the height of channel two is 800mm, the height of channel three is 600mm, the height of channel four is 400mm, the height of channel five is 200mm, and the diameter of channel one, two, three, four and five is 100 mm.
7. The continuous casting tundish of Fe-Cr-Al alloy according to claim 1, wherein the height of the wall between A, B, C and D is 1000mm, the height of the wall between E and F is 1200mm, and the thickness of the wall is 100 mm.
8. A continuous casting method of iron-chromium-aluminum alloy is characterized by comprising the following steps:
a: adding premelted refining slag in A, B area;
b: respectively injecting aluminum liquid and iron-chromium mother liquor into the A, B area to enable the premelted refining slag to be melted and float on the surfaces of the aluminum liquid and the iron-chromium mother liquor, so that the aluminum liquid and the iron-chromium mother liquor are alloyed under the environment of isolating oxygen and sequentially flow to the C, D, E, F area;
c: when the height of the alloy liquid in the area E reaches more than 400mm, adding premelted refining slag in C, D and E areas respectively;
d: and when the height of the alloy liquid in the F area reaches 800mm, starting the stopper rod by the tundish for continuous casting, and adding tundish covering slag in the F area.
9. The method for continuously casting an Fe-Cr-Al alloy as claimed in claim 1, wherein the premelted refining slag contains CaO 60-70%, and Al2O3:15-25％、SiO2≤5％、CaF2:2-5％。
10. The continuous casting method of an iron-chromium-aluminum alloy as claimed in claim 1, wherein the mold flux has the following composition: CaO: 40-50%; SiO 22：30-40％；C：0-25％；Al2O3：Na2O+K2O：0-15％。
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| 杨明磊;程常桂;李阳;卢海彪;周焱;金焱;: "连铸中间包水口堵塞机理及控制技术的发展", 钢铁研究学报, no. 10 * |
| 赵连刚, 刘坤, 李超, 张仲铮, 马学忠, 接宏伟, 刘洪魁: "鞍钢板坯连铸机中间包挡墙设置优化与改进", 炼钢, no. 02 * |
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| CN113351843B (en) | 2023-11-03 |
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