CN110144468A - A kind of electroslag furnace control oxygen slag system and preparation method thereof - Google Patents
A kind of electroslag furnace control oxygen slag system and preparation method thereof Download PDFInfo
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- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
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Abstract
The present invention relates to a kind of electroslag furnace control oxygen slag systems and preparation method thereof, belong to metallurgical smelting technical field.To solve the problems, such as that existing pre-melted slag deoxidizing capacity is weak and expensive, the present invention provides a kind of electroslag furnace control oxygen slag systems, including following weight percentage components: self-control pre-melted slag 30~32%, Al2O343~45%, CaO 20~22% and MgO 3~5%, wherein self-control pre-melted slag makes SiO by desiliconization processing2Content≤1.5%, also containing 2~3% aluminium, preferable deoxidation effect can be played；CaO,Al2O3The deoxidizing capacity of slag system can be further increased with MgO.The cost of electroslag furnace control oxygen slag system of the present invention is low, preparation process is simple, energy conservation and consumption reduction effects are good, remelting chemical composition stability.The melting that steel is carried out using present invention control oxygen slag system, can make electroslag ingot internal soundness uniform, and ingot casting surface is smooth, and flaw detection index is excellent.
Description
Technical field
The invention belongs to metallurgical smelting technical fields more particularly to a kind of electroslag furnace control oxygen slag system and preparation method thereof.
Background technique
Electroslag remelting technique is as a kind of means for smelting high-quality steel ingot, with its excellent metallurgical reaction condition and special
Crystallization mode has the irreplaceable superiority of other method for making steel.But esr process is usually to carry out under atmosphere,
For oxygen content in steel, Electro Slag Remelting Steel is high by the steel being vacuum-treated more than vacuum arc remelting steel etc..Electro Slag Remelting Steel oxygenation is main
It is to occur in the slag of electroslag remelting, so the component part that electroslag slag is important as electric slag refusion metallurgy, constituent element
Proportion, group metamember play the role of the excessively program-controlled oxygen of electroslag metallurgy particularly important.Existing electroslag furnace is produced as control Electro Slag Remelting Steel oxygen
Content, slag charge use pre-melted slag more, require to carry out remelting according to the ratio.Pre-melted slag procurement price is expensive, not to the production of part steel grade
It is applicable in.
Summary of the invention
To solve the problems, such as that existing pre-melted slag deoxidizing capacity is weak and expensive, the present invention provides a kind of electroslag furnace control oxygen
Slag system and preparation method thereof.
Technical solution of the present invention:
A kind of electroslag furnace control oxygen slag system, including following weight percentage components: self-control pre-melted slag 30~32%, Al2O3
43~45%, CaO 20~22% and MgO 3~5%, wherein chemical component contained by self-control pre-melted slag includes CaF2>=95%,
SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%.
Further, the Al2O3Purity >=98.2%, Al2O3Contained SiO2The purity of≤0.02%, the CaO >=
95%, SiO contained by CaO2SiO contained by purity >=87% of≤1.5%, the MgO, MgO2≤ 1.5%.
Further, the self-control pre-melted slag partial size≤30mm, the Al2O3Partial size≤0.1mm, the partial size of the CaO
For 30~60mm, the partial size of the MgO is 3~6mm.
A kind of preparation method of electroslag furnace control oxygen slag system provided by the invention, using metal electrode as consutrode, assembly
Good electroslag refining furnace is incorporated in the raw material fluorite for toasting certain time under certain temperature into crystallizer, adjusts voltage and operation
Electric current carries out electroslag remelting, including fusing slag charge and refining slag to the consutrode, while slag charge, fusing slag charge is being added
With the Al grain that constant weight is added during refining slag in batches, blowing out is cooling after refining, obtains self-control pre-melted slag,
Will self-control pre-melted slag crush after according to the ratio with Al2O3, CaO and MgO be uniformly mixed and obtain electroslag furnace control oxygen slag system.
Further, chemical component contained by the metal electrode include: C 0.47~0.57%, Si 0.17~0.40%,
Mn 0.60~0.90%, P≤0.030%, S≤0.030%, Cr≤0.30%, Ni≤0.31%, Cu≤0.25% and Al
0.020~0.050%.
Further, the chemical component of the raw material fluorite includes CaF2>=95% and SiO2≤ 4.5%, the raw material firefly
Partial size≤30mm of stone；Purity >=98.5% of the aluminum shot, the partial size of the aluminum shot are 3~7mm.
Further, the baking temperature of the raw material fluorite is 600~800 DEG C, and baking time is 6~8h, the electroslag
Voltage in reflow process is 80v, and the operation electric current is 0~10.0KA.
Further, operation electric current is 0~5.0KA during the addition slag charge, and every 5min when slag charge is added and is added 7
~9Kg raw material fluorite is added after slag charge 20min and 1.5Kg aluminum shot is added by every 2min, batch of aluminum shot is added by slag charge Weight control
It is secondary.
Further, operation electric current is 5.0~8.0KA during the fusing slag charge, is melted after slag charge starts by every 2
1.5Kg aluminum shot is added in minute, and the batch of aluminum shot is added by slag charge Weight control.
Further, during the refining slag operation electric current be 8.0~10.0KA, refining slag start after by every
The batch of aluminum shot is added by slag charge Weight control for 2 minutes addition 1.5Kg aluminum shots.
Beneficial effects of the present invention:
Self-control pre-melted slag in electroslag furnace control oxygen slag system component provided by the invention makes SiO by desiliconization processing2Content≤
1.5%, also containing 2~3% aluminium, good deoxidation effect can be played at electroslag remelting initial stage.Increase in slag system constituent element
The CaO and Al centainly matched2O3, proportion is by CaO/ (1/2*Al2O3)=0.89~1.02 makes slag have appropriate basicity, comes
The deoxidizing capacity in reflow process is improved, Electro Slag Remelting Steel oxygenation amount is reduced.Being incorporated a small amount of MgO can prevent reflow process slag bath from inhaling
The oxide that appraises at the current rate in gas and slag is transmitted to metal bath to be supplied oxygen.
The present invention makes pre-melted slag cost by oneself well below outsourcing pre-melted slag, also further reduced electroslag furnace control oxygen slag system
Cost, with preparation process is simple, energy conservation and consumption reduction effects are good, remelting chemical composition stability, slag system is stable in use
Feature.The melting that steel is carried out using present invention control oxygen slag system, can make electroslag ingot internal soundness uniform, and ingot casting surface is smooth,
Index of detecting a flaw is excellent.
Specific embodiment
Below with reference to embodiment, the following further describes the technical solution of the present invention, and however, it is not limited to this, all right
Technical solution of the present invention is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be contained
Lid is within the protection scope of the present invention.
Embodiment 1
A kind of electroslag furnace control oxygen slag system, including following weight percentage components: self-control pre-melted slag 30~32%, Al2O3
43~45%, CaO 20~22% and MgO 3~5%, wherein chemical component contained by self-control pre-melted slag includes CaF2>=95%,
SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%.
Embodiment 2
A kind of electroslag furnace control oxygen slag system, including following weight percentage components: self-control pre-melted slag 30~32%, Al2O3
43~45%, CaO 20~22% and MgO 3~5%, wherein chemical component contained by self-control pre-melted slag includes CaF2>=95%,
SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%, wherein Al2O3Purity >=98.2%, Al2O3Contained SiO2≤
SiO contained by purity >=95% of 0.02%, CaO, CaO2SiO contained by purity >=87% of≤1.5%, MgO, MgO2≤ 1.5%.
Embodiment 3
A kind of electroslag furnace control oxygen slag system, including following weight percentage components: self-control pre-melted slag 30~32%, Al2O3
43~45%, CaO 20~22% and MgO 3~5%, wherein chemical component contained by self-control pre-melted slag includes CaF2>=95%,
SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Embodiment 4
The present embodiment provides a kind of electroslag furnace control oxygen slag systems, including following weight percentage components: self-control pre-melted slag
30%, Al2O345%, CaO 20% and MgO 5%, CaO/ (1/2*Al2O3)=0.8；Wherein make by oneself pre-melted slag contained by chemistry at
Dividing includes CaF2>=95%, SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Embodiment 5
The present embodiment provides a kind of electroslag furnace control oxygen slag systems, including following weight percentage components: self-control pre-melted slag
31%, Al2O343%, CaO 22% and MgO 4%, CaO/ (1/2*Al2O3)=1.02；Wherein make chemistry contained by pre-melted slag by oneself
Ingredient includes CaF2>=95%, SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Embodiment 6
The present embodiment provides a kind of electroslag furnace control oxygen slag systems, including following weight percentage components: self-control pre-melted slag
32%, Al2O344%, CaO 21% and MgO 3%, CaO/ (1/2*Al2O3)=0.95；Wherein make chemistry contained by pre-melted slag by oneself
Ingredient includes CaF2>=95%, SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Embodiment 7
The present embodiment provides a kind of electroslag furnace control oxygen slag systems, including following weight percentage components: self-control pre-melted slag
32%, Al2O343%, CaO 22% and MgO 3%, CaO/ (1/2*Al2O3)=1.02；Wherein make chemistry contained by pre-melted slag by oneself
Ingredient includes CaF2>=95%, SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Embodiment 8
The present embodiment provides a kind of electroslag furnace control oxygen slag systems, including following weight percentage components: self-control pre-melted slag
30%, Al2O344%, CaO 20% and MgO 4%, wherein chemical component contained by self-control pre-melted slag includes CaF2>=95%, SiO2
≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Embodiment 9
The present embodiment provides a kind of electroslag furnace control oxygen slag systems, including following weight percentage components: self-control pre-melted slag
31%, Al2O345%, CaO 21% and MgO 5%, wherein chemical component contained by self-control pre-melted slag includes CaF2>=95%, SiO2
≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Embodiment 10
The present embodiment provides a kind of electroslag furnace control oxygen slag systems, including following weight percentage components: self-control pre-melted slag
32%, Al2O343%, CaO 22% and MgO 3%, wherein chemical component contained by self-control pre-melted slag includes CaF2>=95%, SiO2
≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Embodiment 11
The present embodiment provides a kind of preparation methods of electroslag furnace control oxygen slag system, using metal electrode as consutrode, assembly
Good electroslag refining furnace is incorporated in the raw material fluorite for toasting certain time under certain temperature into crystallizer, adjusts voltage and operation
Electric current carries out electroslag remelting, including fusing slag charge and refining slag to the consutrode, while slag charge, fusing slag charge is being added
With the Al grain that constant weight is added during refining slag in batches, blowing out is cooling after refining, obtains self-control pre-melted slag,
Will self-control pre-melted slag crush after according to the ratio with Al2O3, CaO and MgO be uniformly mixed and obtain electroslag furnace control oxygen slag system.
Embodiment 12
The present embodiment provides a kind of preparation methods of electroslag furnace control oxygen slag system, using metal electrode as consutrode, assembly
Good electroslag refining furnace is incorporated in the raw material fluorite of 600~800 DEG C of 6~8h of baking into crystallizer, uses carbon dust as striking
Agent, the metal electrode starting the arc, adjusting voltage is that 80v and 0~10.0KA of operation electric current carries out electroslag remelting to consutrode, including melts
Slugging material and refining slag, while constant weight being added in batches during slag charge, fusing slag charge and refining slag is added
Al grain, operation electric current is 0~5.0KA during slag charge is added, and 7~9Kg raw material fluorite is added in every 5min when slag charge is added,
It is added after slag charge 20min and 1.5Kg aluminum shot is added by every 2min, the batch of aluminum shot is added by slag charge Weight control；Melt slag charge
Operation electric current is 5.0~8.0KA in the process, is melted after slag charge starts by every 2 minutes addition 1.5Kg aluminum shots, by slag charge weight control
The batch of aluminum shot is added in system；During refining slag operation electric current be 8.0~10.0KA, refining slag start after by every 2 points
1.5Kg aluminum shot is added in clock, and the batch of aluminum shot is added by slag charge Weight control；10min blowing out is refined after adding aluminum shot, carries away metal
Electrode, cooling 120min obtain self-control pre-melted slag, color whitening color, after crushing according to the ratio with Al2O3, CaO and MgO be uniformly mixed
Obtain electroslag furnace control oxygen slag system.
Chemical component contained by metal electrode includes: C 0.47~0.57%, Si 0.17~0.40%, Mn in the present embodiment
0.60~0.90%, P≤0.030%, S≤0.030%, Cr≤0.30%, Ni≤0.31%, Cu≤0.25% and Al 0.020
~0.050%.
The chemical component of raw material fluorite includes CaF in the present embodiment2>=95% and SiO2≤ 4.5%, the raw material fluorite
Partial size≤30mm；Purity >=98.5% of the aluminum shot, the partial size of the aluminum shot are 3~7mm.
Embodiment 13
The present embodiment provides a kind of preparation methods of electroslag furnace control oxygen slag system, are 1 metal of 200mm*200mm with specification
Electrode assembles electroslag refining furnace as consutrode, is added and is added portionwise into the crystallizer that specification is Ф 480mm/520mm
250Kg toasts the raw material fluorite of 6~8h in 600~800 DEG C, uses carbon dust as striking agent, and the metal electrode starting the arc adjusts voltage
Electroslag remelting is carried out to consutrode for 80v and 0~10.0KA of operation electric current.
Operation electric current is 0~5.0KA during slag charge is added, and every 5min when slag charge is added, 7~9Kg raw material firefly is added
Stone is added after slag charge 20min and 1.5Kg aluminum shot is added by every 2min, 2 batches are added altogether；
Operation electric current is 5.0~8.0KA during melting slag charge, is melted after slag charge starts by every 2 minutes addition 1.5Kg
3 batches are added in aluminum shot altogether；
Operation electric current is 8.0~10.0KA during refining slag, and refining slag was added after starting by every 2 minutes
15 batches are added in 1.5Kg aluminum shot altogether；10min blowing out is refined after adding whole aluminum shots, carries away metal electrode, cools down 120min,
Obtain self-control pre-melted slag, color whitening color, by self-control pre-melted slag 30%, Al after crushing2O345%, CaO 20% and MgO 5%
Proportion will self-control pre-melted slag and Al2O3, CaO and MgO be uniformly mixed and obtain electroslag furnace control oxygen slag system.
Chemical component contained by metal electrode includes: C 0.47~0.57%, Si 0.17~0.40%, Mn in the present embodiment
0.60~0.90%, P≤0.030%, S≤0.030%, Cr≤0.30%, Ni≤0.31%, Cu≤0.25% and Al 0.020
~0.050%.
The chemical component of raw material fluorite includes CaF in the present embodiment2>=95% and SiO2≤ 4.5%, the raw material fluorite
Partial size≤30mm；Purity >=98.5% of the aluminum shot, the partial size of the aluminum shot are 3~7mm.
Comparative example 1
This comparative example uses fluorite raw material, the i.e. CaF without desiliconization processing230%, Al2O345%, CaO 20% and MgO
Deoxidation slag system, Al are prepared after 5% mixing2O3Purity >=98.2%, partial size≤0.1mm；Purity >=95% of CaO, partial size 30
~60mm；Purity >=87% of MgO, partial size are 3~6mm.
Comparative example 2
This comparative example provides a kind of CaO/ (1/2*Al2O3The electroslag furnace control oxygen slag system of)≤0.8, including following weight hundred
Divide the component of ratio: self-control pre-melted slag 30%, Al2O347%, CaO 18% and MgO 5%, CaO/ (1/2*Al2O3)≤0.8；Its
Chemical component contained by middle self-control pre-melted slag includes CaF2>=95%, SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size
≤30mm。
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm；SiO contained by purity >=87% of MgO, MgO2≤ 1.5%,
Partial size is 3~6mm.
Comparative example 3
This comparative example provides a kind of electroslag furnace control oxygen slag system without MgO, including following weight percentage components: from
Pre-melted slag 30% processed, Al2O350% and CaO 20%, CaO/ (1/2*Al2O3)≤0.8；Wherein make by oneself pre-melted slag contained by chemistry at
Dividing includes CaF2>=95%, SiO2≤ 1.5%, FeO≤0.2% and Al 2~3%, partial size≤30mm.
Al in the present embodiment2O3Purity >=98.2%, Al2O3Contained SiO2≤ 0.02%, partial size≤0.1mm；CaO's is pure
SiO contained by degree >=95%, CaO2≤ 1.5%, partial size is 30~60mm.
Using embodiment 4- embodiment 7, the slag system of comparative example 1-3 produces bearing steel 3t ingot shape, and detecting electrode blank oxygen contains
ESR ingot oxygen content, electroslag ingot surface smooth degree and ESR ingot flaw detection index after amount, remelting, the results are shown in Table 1:
Table 1
| Serial number | Electrode blank oxygen content | ESR ingot oxygen content after remelting | Electroslag ingot surface | ESR ingot flaw detection index |
| Embodiment 4 | 10ppm | 17ppm | It is smooth | Φ 1~2 |
| Embodiment 5 | 10ppm | 16ppm | It is smooth | Φ 1~2 |
| Embodiment 6 | 10ppm | 16ppm | It is smooth | Φ 1~2 |
| Embodiment 7 | 10ppm | 15ppm | It is smooth | Φ 1~2 |
| Comparative example 1 | 10ppm | 30ppm | It is coarse | Φ 2~3 |
| Comparative example 2 | 10ppm | 23ppm | It is smooth | Φ 1~2 |
| Comparative example 3 | 10ppm | 25ppm | It is coarse | Φ 2~3 |
The ESR ingot oxygen content of electroslag furnace control oxygen slag system provided by the invention production is utilized it can be seen from data in table 1
For 15~17ppm, and the ESR ingot oxygen content for the slag system production that comparative example 1 is handled without desiliconization is 30ppm, and electroslag ingot surface is thick
Rough, flaw detection index is Φ 2~3, and element silicon contained by raw material fluorite affects slag system in the slag system that this explanation is handled without desiliconization
Deoxidation effect；CaO/ (1/2*Al in comparative example 22O3)≤0.8 electroslag furnace control oxygen slag system production ESR ingot oxygen content be
23ppm, more slightly higher than the embodiment of the present invention, this illustrates CaO/ (1/2*Al of the present invention2O3The proportion of)=0.89~1.02 has slag
Appropriate basicity can be further improved the deoxidizing capacity in reflow process, reduce Electro Slag Remelting Steel oxygenation amount；Comparative example 3 is free of MgO
Electroslag furnace control oxygen slag system production ESR ingot oxygen content be 25ppm, this illustrate MgO can prevent reflow process slag bath air-breathing and
The oxide that appraises at the current rate in slag is transmitted to metal bath to be supplied oxygen, and Electro Slag Remelting Steel oxygenation is further reduced.
The synergistic effect of each component can preferably play the role of controlling oxygen in control oxygen slag system of the present invention, make inside electroslag ingot
Uniform quality, ingot casting surface is smooth, and flaw detection index is excellent.
Claims (10)
1. a kind of electroslag furnace control oxygen slag system, which is characterized in that including following weight percentage components: self-control pre-melted slag 30~
32%, Al2O343~45%, CaO20~22% and MgO3~5%, wherein chemical component contained by self-control pre-melted slag includes CaF2≥
95%, SiO2≤ 1.5%, FeO≤0.2% and Al2~3%.
2. a kind of electroslag furnace control oxygen slag system according to claim 1, which is characterized in that the Al2O3Purity >=98.2%,
Al2O3Contained SiO2SiO contained by purity >=95% of≤0.02%, the CaO, CaO2The purity of≤1.5%, the MgO >=
87%, SiO contained by MgO2≤ 1.5%.
3. a kind of electroslag furnace control oxygen slag system according to claim 1 or claim 2, which is characterized in that the self-control pre-melted slag partial size≤
30mm, the Al2O3Partial size≤0.1mm, the partial size of the CaO is 30~60mm, and the partial size of the MgO is 3~6mm.
4. a kind of preparation method of electroslag furnace control oxygen slag system as described in claim 1-3 is any, which is characterized in that with metal electrode
As consutrode, electroslag refining furnace is assembled, the raw material firefly for toasting certain time under certain temperature is incorporated in into crystallizer
Stone adjusts voltage and operation electric current and carries out electroslag remelting to the consutrode, including melts slag charge and refining slag, while
The Al grain of constant weight is added during slag charge, fusing slag charge and refining slag is added in batches, blowing out is cold after refining
But, obtain self-control pre-melted slag, will self-control pre-melted slag crush after according to the ratio with Al2O3, CaO and MgO be uniformly mixed and obtain electroslag furnace control
Oxygen slag system.
5. a kind of preparation method of electroslag furnace control oxygen slag system according to claim 4, which is characterized in that the metal electrode institute
Containing chemical component include: C0.47~0.57%, Si0.17~0.40%, Mn0.60~0.90%, P≤0.030%, S≤
0.030%, Cr≤0.30%, Ni≤0.31%, Cu≤0.25% and Al0.020~0.050%.
6. a kind of preparation method of electroslag furnace control oxygen slag system according to claim 4 or 5, which is characterized in that the raw material firefly
The chemical component of stone includes CaF2>=95% and SiO2≤ 4.5%, partial size≤30mm of the raw material fluorite；The aluminum shot it is pure
Degree >=98.5%, the partial size of the aluminum shot are 3~7mm.
7. a kind of preparation method of electroslag furnace control oxygen slag system according to claim 6, which is characterized in that the raw material fluorite
Baking temperature is 600~800 DEG C, and baking time is 6~8h, and the voltage in the esr process is 80v, the operation electricity
Stream is 0~10.0KA.
8. a kind of preparation method of electroslag furnace control oxygen slag system according to claim 7, which is characterized in that the addition slag charge
Operation electric current is 0~5.0KA in the process, every 5min when slag charge is added, 7~9Kg raw material fluorite is added, press after slag charge 20min is added
1.5Kg aluminum shot is added in every 2min, and the batch of aluminum shot is added by slag charge Weight control.
9. a kind of preparation method of electroslag furnace control oxygen slag system according to claim 8, which is characterized in that the fusing slag charge
Operation electric current is 5.0~8.0KA in the process, is melted after slag charge starts by every 2 minutes addition 1.5Kg aluminum shots, by slag charge weight control
The batch of aluminum shot is added in system.
10. a kind of preparation method of electroslag furnace control oxygen slag system according to claim 9, which is characterized in that the refining slag
During operation electric current be 8.0~10.0KA, refining slag start after by every 2 minutes addition 1.5Kg aluminum shots, by slag charge weight
The batch of aluminum shot is added in control.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322868A (en) * | 2020-11-16 | 2021-02-05 | 建龙北满特殊钢有限责任公司 | High-alloy tool and die steel and preparation method thereof |
| CN112899490A (en) * | 2021-01-19 | 2021-06-04 | 苏州大学 | Pre-melted slag for electroslag remelting titanium-containing steel and method for preparing electroslag remelting low-oxygen titanium-containing steel through deoxidation |
| CN112961989A (en) * | 2021-02-03 | 2021-06-15 | 建龙北满特殊钢有限责任公司 | Low-carbon high-aluminum steel and electroslag production method thereof |
| CN112981127A (en) * | 2021-02-09 | 2021-06-18 | 鞍钢股份有限公司 | Electroslag remelting inhibition oxygenation method |
| CN113088716A (en) * | 2021-03-31 | 2021-07-09 | 安徽富凯特材有限公司 | Ultralow-oxygen slag system for electroslag remelting and preparation method thereof |
| CN113088716B (en) * | 2021-03-31 | 2024-07-05 | 安徽富凯特材有限公司 | Ultralow oxygen slag system for electroslag remelting and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409181A (en) * | 2011-11-25 | 2012-04-11 | 山西太钢不锈钢股份有限公司 | Preparation method of electroslag remelting slag |
| CN102776379A (en) * | 2011-05-13 | 2012-11-14 | 宝山钢铁股份有限公司 | Electroslag remelting slag system and its application |
| CN105039733A (en) * | 2015-08-24 | 2015-11-11 | 太原钢铁(集团)有限公司 | Electroslag remelting method for Ti-contained nickel-base superalloy |
-
2019
- 2019-07-01 CN CN201910585148.9A patent/CN110144468B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776379A (en) * | 2011-05-13 | 2012-11-14 | 宝山钢铁股份有限公司 | Electroslag remelting slag system and its application |
| CN102409181A (en) * | 2011-11-25 | 2012-04-11 | 山西太钢不锈钢股份有限公司 | Preparation method of electroslag remelting slag |
| CN105039733A (en) * | 2015-08-24 | 2015-11-11 | 太原钢铁(集团)有限公司 | Electroslag remelting method for Ti-contained nickel-base superalloy |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322868A (en) * | 2020-11-16 | 2021-02-05 | 建龙北满特殊钢有限责任公司 | High-alloy tool and die steel and preparation method thereof |
| CN112899490A (en) * | 2021-01-19 | 2021-06-04 | 苏州大学 | Pre-melted slag for electroslag remelting titanium-containing steel and method for preparing electroslag remelting low-oxygen titanium-containing steel through deoxidation |
| CN112899490B (en) * | 2021-01-19 | 2022-03-15 | 苏州大学 | Pre-melted slag for electroslag remelting titanium-containing steel and method for preparing electroslag remelting low-oxygen titanium-containing steel through deoxidation |
| CN112961989A (en) * | 2021-02-03 | 2021-06-15 | 建龙北满特殊钢有限责任公司 | Low-carbon high-aluminum steel and electroslag production method thereof |
| CN112961989B (en) * | 2021-02-03 | 2022-12-23 | 建龙北满特殊钢有限责任公司 | Low-carbon high-aluminum steel and electroslag production method thereof |
| CN112981127A (en) * | 2021-02-09 | 2021-06-18 | 鞍钢股份有限公司 | Electroslag remelting inhibition oxygenation method |
| CN113088716A (en) * | 2021-03-31 | 2021-07-09 | 安徽富凯特材有限公司 | Ultralow-oxygen slag system for electroslag remelting and preparation method thereof |
| CN113088716B (en) * | 2021-03-31 | 2024-07-05 | 安徽富凯特材有限公司 | Ultralow oxygen slag system for electroslag remelting and preparation method thereof |
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