CN108425063A - A kind of preparation method of the high manganese intermediate alloy of high cleanliness - Google Patents
A kind of preparation method of the high manganese intermediate alloy of high cleanliness Download PDFInfo
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- CN108425063A CN108425063A CN201810229738.3A CN201810229738A CN108425063A CN 108425063 A CN108425063 A CN 108425063A CN 201810229738 A CN201810229738 A CN 201810229738A CN 108425063 A CN108425063 A CN 108425063A
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- intermediate alloy
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- vaccum sensitive
- manganese intermediate
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C22/00—Alloys based on manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
- C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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Abstract
The invention belongs to field of steel-making, and in particular to a kind of preparation method of the high manganese intermediate alloy of high cleanliness.Electrode is poured into using vaccum sensitive stove, active metal is added during vacuum induction furnace smelting and carries out deoxidation, desulfurization and is retained in induction electrode in the form of field trash.Remelting wash heat is carried out to electrode bar using electroslag refining furnace, further improves the degree of purity of intermediate alloy.And in S contents≤0.003%, Mn content of the final intermediate alloy material of induction electrode 40 60%, Fe contents are 40 60%.Intermediate alloy prepared by the present invention can be used for the steel grade of vacuum induction furnace smelting Mn content >=1.00%, S content requirement≤0.001%.
Description
Technical field
The invention belongs to field of steel-making, and in particular to a kind of preparation method of the high manganese intermediate alloy of high cleanliness.
Background technology
Environmentally friendly form is severe, under overall background of Energy restructuring, nuclear power product development in China's welcomes huge opportunity, special
It is not as China possesses the gradual maturation of the imperial No.1 of Generation Ⅲ China of independent intellectual property right.Fast reactor is as forth generation
A kind of technology path of nuclear power technology, all in R＆D process, the country has shutting mechanism also researching and developing related skill energetically for countries in the world
Art.A kind of alloy material of existing fast reactor, process route require to be vacuum induction+vacuum consumable smelting, and degree of purity requires pole
Height, field trash require A classes, B classes, 0.5 grade of C classes ＜, class≤0.5 grade D.Wherein A type impurities are sulfide, to accomplish ＜ 0.5
Grade must just accomplish S contents≤10ppm in material..Although the alloy raw material of induction furnace melting selection is all simple metal material, pure
When more or less all higher containing Mn contents as defined in certain sulphur, the especially steel grade in metal charge（≥2.00%）When, it is existing
Manganese metal S contents generally in 0.03%-0.04%, larger amount of manganese metal is added, and to lead to increase sulphur serious, cannot meet true
The requirement of the empty induction furnace melting steel grade.Vacuum induction melting is under vacuum, using electromagnetic induction in metallic conductor
The interior method for generating eddy heating for heating furnace charge and carrying out melting.With the control for accurately controlling chemical element and being especially oxidizable element,
The features such as smelting steel has higher degree of purity, and smelting process adjustability is strong.But vacuum induction melting can not effectively into
Row desulfurization.
Invention content
The purpose of the present invention is provide a kind of preparation method of the high manganese intermediate alloy of high cleanliness regarding to the issue above.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of preparation method of the high manganese intermediate alloy of high cleanliness, includes the following steps：
（1）, to vaccum sensitive stove vacuum breaker, raw metal manganese is packed into the crucible in vaccum sensitive stove, then close stove evacuation；
（2）, to vaccum sensitive stove power transmission, when raw metal manganese have fusing as when, to rushing argon gas in induction furnace, then added by side
Pure iron as raw material is added in crucible by material system；
（3）, add metallic aluminium；
（4）, after metal charge is completely melt, into refining stage, and open electromagnetic agitation, increase the mobility of molten steel, when refining
Between 30-60min；
（5）, after refining, metallic cerium and silico-calcium is added, the product after metallic cerium and S react and react is mingled with rare earth
There are in molten steel for the form of object；
（6）, tapping, pour into induction electrode；
（7）, induction electrode hung in crystallizer；
（8）, slag charge is slowly added to crystallizer electroslag remelting is carried out to induction electrode, slag charge inhales re inclusion from molten steel
It is attached to come out；
（9）, steel ingot it is 0.8-1.2 hours cold in crystal growing furnace after demoulded.
Preferably, the raw metal manganese being packed into vaccum sensitive stove, pure iron as raw material, metallic aluminium, metallic cerium and silico-calcium dress
Enter 38-60%, 40-60%, 0.8-1.2%, 0.4-0.6% and 0.1-0.15% that amount is respectively the total charge weight of vaccum sensitive stove.
Preferably, the refining temperature of the vaccum sensitive stove is 1450-1550 degree, the tapping temperature of the vaccum sensitive stove
Degree is 1480-1510 degree.
Preferably, in the step（7）Before to induction electrode into shrinkage cavity end carry out sawing, then by auxiliary electrode with
It is welded at smooth shrinkage cavity end after the completion of sawing.
Preferably, cut the plate of a piece of 15-30mm thickness as plate is started from the other end of induction electrode, will start plate with
Dummy plate is welded, and then the Dummy plate being welded is fitted between bottom water case and crystallizer, then crystallizer is hung in electricity
In slag hearth station, the step is carried out again later（7）.
Preferably, the step（8）In carry out that pool is expected to carry out starting the arc slugging, after scorification is complete, melting enters steady
State stage, current control are controlled in 38-42V, melting speed control in 8980-9010A, voltage between 5.0-6.0.
Preferably, further including the heat-sealing top stage in electroslag remelting, decline in heat-sealing top stage melting rate, while power
Decline, steel ingot gradually solidification shrinkage.
Preferably, when the weight of remanent induction electrode reaches 120kg, start heat-sealing top.
Preferably, the step（6）It is middle that baked chute is hung in into chute room, it is charged out to heat preservation power
Steel pours into induction electrode.
It, can be by the part inclusion removal on molten steel top, to coordinate the later stage by the filtering of chute twice slag trap
Scorification remelting is preferably purified.
In conclusion the invention has the advantages that：
1, the invention discloses a kind of preparation method of the high manganese intermediate alloy of high cleanliness, electricity is poured into using vaccum sensitive stove
Active metal is added during vacuum induction furnace smelting and carries out deoxidation, desulfurization and is retained in sense in the form of field trash for pole
It answers in electrode.Remelting wash heat is carried out to electrode bar using electroslag refining furnace, further improves the degree of purity of intermediate alloy.And
S contents≤0.003%, Mn content of the final intermediate alloy material of induction electrode is in 40-60%, and Fe contents are in 40-60%.This hair
The intermediate alloy of bright preparation can be used for the steel grade of vacuum induction furnace smelting Mn content >=1.00%, S content requirement≤0.001%.
2, this method is easy to operate, and intermediate alloy purity is high.
Specific implementation mode
Invention is further described in detail below.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Embodiment one：
A kind of preparation method of the high manganese intermediate alloy of high cleanliness, includes the following steps：
（1）, to vaccum sensitive stove vacuum breaker, the crucible that the raw metal manganese for accounting for total charge weight 40% is packed into vaccum sensitive stove
It is interior, then close stove evacuation；
（2）, to vaccum sensitive stove power transmission, when raw metal manganese have fusing as when, to rushing argon gas in induction furnace, then added by side
Pure iron as raw material is added in crucible by material system；Manganese is volatile under vacuum conditions, therefore argon filling reduction is carried out when starting fusing
Vacuum pressure, argon filling make air pressure in stove reach 7000Pa.
（3）, add the metallic aluminium for accounting for total charge weight 1%, play the role of deoxidation to molten steel；
（4）, after metal charge is completely melt, into refining stage, and open electromagnetic agitation, increase the mobility of molten steel, when refining
Between 30-60min；
（5）, after refining, addition accounts for the metallic cerium of total charge weight 0.5% and accounts for the silico-calcium of total charge weight 0.1%, due to metal
Cerium is Strong oxdiative element, and when the O content in molten steel has been in reduced levels, metallic cerium can react with S, metallic cerium
React with S and the product after reacting there are in molten steel in the form of re inclusion；
（6）, carry out thermometric before tapping, prepare tapping when temperature reaches 1500 ± 10 DEG C.Baked chute is hung in into chute room,
Electrification tapping is carried out to heat preservation power, pours into induction electrode；
Sawing is carried out into shrinkage cavity end to induction electrode, then welds auxiliary electrode and the smooth shrinkage cavity end after the completion of sawing
It connects.The plate for cutting a piece of 15-30mm thickness from the other end of induction electrode will start plate and welded with Dummy plate as plate is started
It connects, then the Dummy plate being welded is fitted between bottom water case and crystallizer, then crystallizer is hung in electroslag furnace station, it will
The induction electrode being welded is hung in crystallizer；
（7）, induction electrode hung in crystallizer, and materials bar is accommodated；
（8）, slag charge is slowly added to crystallizer electroslag remelting is carried out to induction electrode, slag charge inhales re inclusion from molten steel
It is attached out to float；
（9）, steel ingot it is 0.8-1.2 hours cold in crystal growing furnace after demoulded.
Step（9）It specially avoids forming shrinkage cavity in steel ingot, decline in heat-sealing top stage melting rate, while under power
Drop, gradually solidification shrinkage, reduction head shrinkage cavity start heat-sealing top to steel ingot when the weight of remaining electrode drops to 120kg.It mends
Contracting finishes, and is demoulded after furnace cooling 1h in crystallizer, is carried out after demoulding air-cooled.
The pure iron as raw material amount being packed into vaccum sensitive stove is to remove remaining amount after above-mentioned loading object., metallic aluminium, metallic cerium
And silico-calcium charge weight is respectively 38-60%, 40-60%, 0.8-1.2%, 0.4-0.6% and 0.1- of the total charge weight of vaccum sensitive stove
0.15%。
The refining temperature of the vaccum sensitive stove is 1450-1550 degree, and the tapping temperature of the vaccum sensitive stove is 1480
Degree.
The step（8）In carry out to pool expect carry out starting the arc slugging, after scorification is complete, melting enters steady-state process, electricity
Flow control is controlled in 38V, melting speed control in 8980-9010A, voltage between 5.0-6.0.
Further include the heat-sealing top stage in electroslag remelting, declines in heat-sealing top stage melting rate, while power declines, steel ingot
Gradually solidification shrinkage.
When the weight of remanent induction electrode reaches 120kg, start heat-sealing top.
It, can be by the part inclusion removal on molten steel top, to coordinate the later stage by the filtering of chute twice slag trap
Scorification remelting is preferably purified.
Embodiment two：
It is unlike the embodiments above to be in raw metal manganese, pure iron as raw material, metallic aluminium, the metallic cerium being packed into vaccum sensitive stove
And silico-calcium charge weight is respectively 58%, 40.05%, 1.2%, 0.6% and the 0.15% of the total charge weight of vaccum sensitive stove.The vacuum sense
It is 1450 degree to answer the refining temperature of stove, and the tapping temperature of the vaccum sensitive stove is 1510 degree.Melting enters steady-state process, electricity
Flow control is in 9010A, voltage control in 42V.S content≤0.003% in obtained intermediate alloy.
Embodiment three：
It is unlike the embodiments above to be in raw metal manganese, pure iron as raw material, metallic aluminium, the metallic cerium being packed into vaccum sensitive stove
And silico-calcium charge weight is respectively 50%, 48.7%, 0.8%, 0.4% and the 0.1% of the total charge weight of vaccum sensitive stove.The vacuum induction
The refining temperature of stove is 1450-1550 degree, the vaccum sensitive stove.S content≤0.002% in obtained intermediate alloy.
Example IV：
It is unlike the embodiments above to be in raw metal manganese, pure iron as raw material, metallic aluminium, the metallic cerium being packed into vaccum sensitive stove
And silico-calcium charge weight is respectively 38.28%, 60%, 1.1%, 0.5% and the 0.12% of the total charge weight of vaccum sensitive stove.The vacuum sense
It is 1500 degree to answer the refining temperature of stove, the vaccum sensitive stove.S content≤0.001% in obtained intermediate alloy.
Embodiment five：
It is unlike the embodiments above to be in raw metal manganese, pure iron as raw material, metallic aluminium, the metallic cerium being packed into vaccum sensitive stove
And silico-calcium charge weight is respectively 45%, 60%, 1.1%, 0.5% and the 0.12% of the total charge weight of vaccum sensitive stove.The vaccum sensitive stove
Refining temperature be 1500 degree, the vaccum sensitive stove.S content≤0.002% in obtained intermediate alloy.
Claims (9)
1. a kind of preparation method of the high manganese intermediate alloy of high cleanliness, it is characterised in that：Include the following steps：
（1）, to vaccum sensitive stove vacuum breaker, raw metal manganese is packed into the crucible in vaccum sensitive stove, then close stove evacuation；
（2）, to vaccum sensitive stove power transmission, when raw metal manganese have fusing as when, to rushing argon gas in induction furnace, then added by side
Pure iron as raw material is added in crucible by material system；
（3）, add metallic aluminium；
（4）, after metal charge is completely melt, into refining stage, and open electromagnetic agitation, increase the mobility of molten steel, when refining
Between 30-60min；
（5）, after refining, metallic cerium and silico-calcium is added, the product after metallic cerium and S react and react is mingled with rare earth
There are in molten steel for the form of object；
（6）, tapping, pour into induction electrode；
（7）, induction electrode hung in crystallizer；
（8）, slag charge is slowly added to crystallizer electroslag remelting is carried out to induction electrode, slag charge inhales re inclusion from molten steel
It is attached to come out；
（9）, steel ingot it is 0.8-1.2 hours cold in crystal growing furnace after demoulded.
2. the preparation method of the high manganese intermediate alloy of a kind of high cleanliness according to claim 1, it is characterised in that：Vacuum induction
Raw metal manganese, pure iron as raw material, metallic aluminium, metallic cerium and the silico-calcium charge weight being packed into stove are respectively that vaccum sensitive stove is always packed into
38-60%, 40-60%, 0.8-1.2%, 0.4-0.6% and 0.1-0.15% of amount.
3. the preparation method of the high manganese intermediate alloy of a kind of high cleanliness according to claim 1, it is characterised in that：The vacuum
The refining temperature of induction furnace is 1450-1550 degree, and the tapping temperature of the vaccum sensitive stove is 1480-1510 degree.
4. the preparation method of the high manganese intermediate alloy of a kind of high cleanliness according to claim 1, it is characterised in that：In the step
Suddenly（7）Sawing is carried out into shrinkage cavity end to induction electrode before, then by the smooth shrinkage cavity end after the completion of auxiliary electrode and sawing
It is welded.
5. the preparation method of the high manganese intermediate alloy of a kind of high cleanliness according to claim 4, it is characterised in that：From induced electricity
The other end of pole cuts the plate of a piece of 15-30mm thickness as plate is started, and will start plate and is welded with Dummy plate, then will welding
Good Dummy plate is fitted between bottom water case and crystallizer, then crystallizer is hung in electroslag furnace station, is carried out again later described
Step（7）.
6. the preparation method of the high manganese intermediate alloy of a kind of high cleanliness according to claim 5, it is characterised in that：The step
（8）In carry out to pool expect carry out starting the arc slugging, after scorification is complete, melting enters steady-state process, and current control is in 8980-
9010A, voltage control are in 38-42V, melting speed control between 5.0-6.0.
7. the preparation method of the high manganese intermediate alloy of a kind of high cleanliness according to claim 6, it is characterised in that：In electroslag weight
Further include the heat-sealing top stage in molten, declines in heat-sealing top stage melting rate, while power declines, steel ingot gradually solidification shrinkage.
8. the preparation method of the high manganese intermediate alloy of a kind of high cleanliness according to claim 7, it is characterised in that：When residue is felt
When the weight of electrode being answered to reach 120kg, start heat-sealing top.
9. the preparation method of the high manganese intermediate alloy of a kind of high cleanliness according to claim 1, it is characterised in that：The step
（6）It is middle that baked chute is hung in into chute room, electrification tapping is carried out to heat preservation power, pours into induction electrode.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373602A (en) * | 2019-07-31 | 2019-10-25 | 游峰 | A kind of master alloy additive and the preparation method and application thereof |
| CN110629116A (en) * | 2019-10-22 | 2019-12-31 | 成都先进金属材料产业技术研究院有限公司 | Vacuum consumable melting method of 0Cr13Ni8Mo2Al stainless steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928839A (en) * | 2009-06-25 | 2010-12-29 | 宝山钢铁股份有限公司 | Slag system for electroslag remelting of manganese-based alloy steel and using method thereof |
| CN104018058A (en) * | 2014-06-16 | 2014-09-03 | 攀钢集团江油长城特殊钢有限公司 | Control method of component and surface quality of Fe-Mn alloy electroslag remelting ingot |
| US9359662B2 (en) * | 2008-12-19 | 2016-06-07 | Technische Universität Wien | Iron-carbon master alloy |
-
2018
- 2018-03-20 CN CN201810229738.3A patent/CN108425063B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9359662B2 (en) * | 2008-12-19 | 2016-06-07 | Technische Universität Wien | Iron-carbon master alloy |
| CN101928839A (en) * | 2009-06-25 | 2010-12-29 | 宝山钢铁股份有限公司 | Slag system for electroslag remelting of manganese-based alloy steel and using method thereof |
| CN104018058A (en) * | 2014-06-16 | 2014-09-03 | 攀钢集团江油长城特殊钢有限公司 | Control method of component and surface quality of Fe-Mn alloy electroslag remelting ingot |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373602A (en) * | 2019-07-31 | 2019-10-25 | 游峰 | A kind of master alloy additive and the preparation method and application thereof |
| CN110629116A (en) * | 2019-10-22 | 2019-12-31 | 成都先进金属材料产业技术研究院有限公司 | Vacuum consumable melting method of 0Cr13Ni8Mo2Al stainless steel |
| CN110629116B (en) * | 2019-10-22 | 2021-09-21 | 成都先进金属材料产业技术研究院有限公司 | Vacuum consumable melting method of 0Cr13Ni8Mo2Al stainless steel |
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