CN109694937A - Spiral electromagnetic stirring heater and its method for preparing double deoxidizer - Google Patents
Spiral electromagnetic stirring heater and its method for preparing double deoxidizer Download PDFInfo
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- CN109694937A CN109694937A CN201710984815.1A CN201710984815A CN109694937A CN 109694937 A CN109694937 A CN 109694937A CN 201710984815 A CN201710984815 A CN 201710984815A CN 109694937 A CN109694937 A CN 109694937A
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- Prior art keywords
- spiral
- alloy
- heating device
- heater
- double deoxidizer
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- 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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/02—Use of electric or magnetic effects
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
A kind of method that the present invention discloses spiral electromagnetic stirring heater and its prepares double deoxidizer, can produce the more uniform double deoxidizer of composition.The maximal density of the double deoxidizer can achieve 4.23g/cm3This double deoxidizer is used, the CO that can be generated by decomposition of limestone while to deoxidation of molten steel2The double deoxidizer for removing the deoxidation products generated, the deoxidation products remained in steel can be effectively reduced using the deoxidier, mitigates the scaling loss of deoxygenated alloy, improves the cleanliness of molten steel.
Description
Technical field
The invention belongs to field of steel-making, in particular to a kind of spiral electromagnetic stirring heater and its double deoxidizer is prepared
Method.
Background technique
At present prepare double deoxidizer technique mainly have traditional electromagnetic agitation or mechanical stirring mixing, such as application No. is
The patent of invention of CN200310105569.6 provides a kind of contained manganess aluminium dexidized steel aluminium manganese complex deoxidization alloy block, the invention
Production technology uses useization aluminium furnace technology, and raffinal is fused into aluminum solutions；Aluminum solutions after fusing have been cast to one
The manganese identical with steel grade is smelted of preheating is added rapidly in the die for molding for determining taper in casting process in certain mass ratio
Iron, final curing form aluminium manganese complex deoxidization alloy block.A kind of compound manganese of the disclosure of the invention of application number CN03123039.3
Base deoxygenated alloy, it include metallic aluminium, magnesium, manganese iron, Si-Ca-Ba, binder be raw material, crushed, stirred, be pressed by raw material
Type, the processing steps such as drying are made.But the above method has several points deficiency: 1) traditional electromagnetic agitation is only capable of in circumferentially agitation gold
Belong to melt or mixture, the flowing on radially, axially is very weak, thus be easy to cause the ingredient of mixture different zones uneven.
2) loss ratio of agitating paddle is more serious when mechanical stirring, and service life is shorter, while agitating paddle also has one to the ingredients of a mixture
Fixed influence, thus less use in actual production.
Summary of the invention
In order to overcome drawbacks described above, technical problem to be solved by the invention is to provide a kind of heating of spiral electromagnetic agitation to fill
The method for setting and its preparing double deoxidizer, the double deoxidizer uniform ingredients produced using the device, density fluctuation range is small,
It is suitble to carry out deoxidation to molten steel, while the double deoxidizer of the deoxidation products of generation can be removed, can has using the deoxidier
Effect mitigates the scaling loss of deoxygenated alloy, improves the cleanliness of molten steel.
Object of the present invention is to what is realized by following technical solution:
A kind of heating device of spiral electromagnetic agitation, the cabinet including being in circular ring type, the box cavity inside are equipped with
Heater, box cavity outside are equipped with spiral magnetic stirrer, insulating layer are equipped between heater and spiral magnetic stirrer；Spiral shell
Rotation magnetic stirrer, heater are controlled by control system.
Vacuum (-tight) housing is equipped with outside the heating device of the spiral electromagnetic agitation, vacuum (-tight) housing connects vacuum pump.
Heater is connect by the fixed device of heater with cabinet；Spiral magnetic stirrer is connect by bolt with cabinet.
Heater uses induction heating, is equipped with water-cooling system.
The method for preparing double deoxidizer using spiral electromagnetic stirring heater, includes the following steps:
1) it for the smelting containing easy oxidation metal and to the deoxidier of volume concentration of gas phase < 1% in double deoxidizer, beats
Vacuum pump is opened, guarantees that air pressure carries out next step after being less than 1Pa again in vacuum (-tight) housing；
2) alloy furnace is prepared to be put into heating device；If without containing easy oxidation metal or to compound in double deoxidizer
Gas content no requirement (NR) in deoxidier, can not execute step 1), directly progress step 2)；
3) low-melting-point metal to be melted or alloy alloy is put into prepare in furnace；
4) heating device is opened to heat metal or alloy；
5) when being higher than 50~200 DEG C of metal or alloy fusing point, heat preservation disconnected heating device after 10~30 minutes；
6) it opens magnetic stirrer to be stirred molten metal, 50~600A of electric current, the 1~50Hz of frequency of electromagnetic agitation；
7) solid particle of high-melting-point and infusibility is poured into and fills the alloy of molten metal and prepares in furnace, low-melting-point metal liquid table
The solid particle in face with the inside for flowing into melt of liquid can stop that solid is added when reaching composition design requirement
Grain；
8) double deoxidizer after solidifying, which passes through, to be crushed, is stand-by.
Using the covering device, the more uniform double deoxidizer of composition can be produced.The maximal density of the double deoxidizer can
To reach 4.23g/cm3This double deoxidizer is used, can be generated by decomposition of limestone while to deoxidation of molten steel
CO2The double deoxidizer for removing the deoxidation products generated can effectively reduce the deoxidation remained in steel using the deoxidier and produce
Object mitigates the scaling loss of deoxygenated alloy, improves the cleanliness of molten steel.
Detailed description of the invention
Fig. 1 is the schematic diagram of heating device that the present invention has spiral electromagnetic agitation；
Fig. 2 is spiral electromagnetic agitation working principle diagram of the present invention；
Fig. 3 is traditional electromagnetic agitation molten metal flow trace main view；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the side view of Fig. 3；
Fig. 6 is spiral electromagnetic agitation molten metal flow trace main view of the present invention；
Fig. 7 is the top view of Fig. 6；
Fig. 8 is the side view of Fig. 6；
Wherein: 1: molten metal；2: alloy prepares furnace；3: spiral magnetic stirrer；4: heater；5: cabinet；6: heater
Fixed device；7: insulating layer；8: bolt；9: vacuum (-tight) housing；10: vacuum pump.
Specific embodiment
It is illustrated combined with specific embodiments below:
Spiral electromagnetic agitation can be by different densities, the metal bath of different components or metal bath and solid particle
It mixes.Since spiral electromagnetic agitation can push metal bath to flow on three-dimensional, i.e., not only there is week in melt
To rotational flow, while there is also the flowing of vertical direction, thus the mixing of metal bath or metal bath and solid particle
The composition of object can be relatively uniform, and the composition distribution of mixture and the correlation of density substantially reduce, and can be effectively reduced close
It is uneven to spend different bring ingredients.Spiral electromagnetic agitation operation schematic diagram is contained with metal as shown in Figure 1, alloy is prepared in furnace 2
Liquid 1, under the action of spiral magnetic stirrer 3, molten metal also has upper and lower, inside and outside flowing while circumferential flow.Fig. 2
The comparison of molten metal flow trace when for traditional electromagnetic agitation and spiral electromagnetic agitation, it can be seen from the figure that using tradition electricity
Molten metal is mainly cooked circulatory motion when magnetic stirs, and the interior-outer of molten metal, previous-next exchange are fewer.And use spiral electromagnetic agitation
When, molten metal not only has circumferential movement, while being also exacerbated in radial and axial flowing, thus has stirring effect well
Fruit, solidification while can effectively facilitating molten metal mitigate the segregation of ingot casting composition, gravity segregation degree.
A kind of heating device of spiral electromagnetic agitation, the cabinet 5 including being in circular ring type, the intracavitary inside of cabinet 5 is set
Having heaters 4, the intracavitary outside of cabinet 5 are equipped with spiral magnetic stirrer 3, are equipped with and protect between heater 4 and spiral magnetic stirrer 3
Warm layer 7；Spiral magnetic stirrer 3, heater 4 are controlled by control system.
Vacuum (-tight) housing 9 is equipped with outside the heating device of spiral electromagnetic agitation, vacuum (-tight) housing 9 connects vacuum pump 10.
Heater 4 is connect by the fixed device 6 of heater with cabinet 5；Spiral magnetic stirrer 3 passes through bolt 8 and cabinet 5
Connection.
Heater 4 uses induction heating, and heater 4 is equipped with water-cooling system.
Embodiment 1:
The preparation and use of -20% Fe complex deoxidizer of -20% lime stone of aluminium
1. water cooling needed for opening melting furnace, magnetic stirrer or electric-control system, air-cooled.
2. 12kg aluminium ingot is put into alloy to prepare in furnace (graphite crucible), melted using induction furnace, is protected after fusing at 800 DEG C
Temperature 20 minutes.
3. the crucible for filling molten aluminum is placed into simplex winding spiral magnetic stirrer.
4. opening magnetic stirrer power supply, auger is carried out to molten aluminum.Electromagnetic agitation electric current 300A, frequency 20Hz.Spiral shell
Revolve 45 ° of magnetic stirrer magnetic yoke inclination angle.
5. 4kg limestone particle is poured slowly into the crucible for filling molten aluminum, if melt temperature mistake during addition
It is low, resistance heating or induction heating can be used, guarantees that melt at 700 DEG C or more, prevents melt from solidifying.
6. the iron block that 4kg diameter is 5mm is added.Due to the presence of spiral electromagnetic stirring force, iron block can relatively evenly divide
It dissipates in the melt, while promoting melt solidification.
7. deoxygenated alloy agent is broken into the fritter that granularity is 5~20mm using crusher, pack, for use.
The density of the deoxygenated alloy is 3.11g/cm3, can after Converter, RH refining etc. need to make during deoxidation
With.
The evaluation of deoxygenated alloy agent:
The density of the double deoxidizer prepared is checked, inspect 5 groups of samples, every group of 0.5kg by random samples altogether, density value is shown in Table
1.Ingredient fluctuates very little between each sample as seen from Table 1, and density fluctuation is all below 1.3%.Illustrate that spiral electromagnetic agitation is certain
It can guarantee that alloying component is uniform.
1 double deoxidizer sample rate of table
| Component | Density g/cm3 |
| Sample 1 | 3.10 |
| Sample 2 | 3.08 |
| Sample 3 | 3.12 |
| Sample 4 | 3.13 |
| Sample 5 | 3.10 |
Embodiment 2:
The preparation and use of -10% Fe complex deoxidizer of -10% manganese of -30% lime stone of aluminium
1. water cooling needed for opening melting furnace, magnetic stirrer or electric-control system, air-cooled.
2. 25kg aluminium ingot is melted using induction furnace, 20 minutes are kept the temperature at 800 DEG C after fusing.
3. alloy is prepared furnace to be placed into simplex winding spiral magnetic stirrer.
4. opening magnetic stirrer power supply, auger is carried out to molten aluminum.Electromagnetic agitation electric current 450A, frequency 15Hz.Spiral shell
Revolve 40 ° of magnetic stirrer magnetic yoke inclination angle.
It is prepared in furnace 5. 15kg limestone particle is poured slowly into and fills the alloy of molten aluminum.
6. -50% ferroalloy particles of manganese that 10kg diameter is 5mm or so are added in molten aluminum.Due to spiral electromagnetic stirring force
Presence, manganeisen particle can be relatively uniformly dispersed throughout in melt, while can promote melt solidification.
7. being used after the double deoxidizer after solidification is cooling, broken.
The density of the deoxygenated alloy is 3.09g/cm3, can after Converter, RH refining etc. need to make during deoxidation
With.
The evaluation of deoxygenated alloy agent:
The density of the double deoxidizer prepared is checked, inspect 5 groups of samples, every group of 0.5kg by random samples altogether, density value is shown in Table
2.It can be seen that ingredient fluctuates very little between each sample, density fluctuation is all below 1%.Illustrate that spiral electromagnetic agitation can guarantee really
Alloying component is uniform.
2 double deoxidizer sample rate of table
| Component | Density g/cm3 |
| Sample 1 | 3.06 |
| Sample 2 | 3.09 |
| Sample 3 | 3.10 |
| Sample 4 | 3.07 |
| Sample 5 | 3.09 |
Claims (5)
1. a kind of heating device of spiral electromagnetic agitation, the cabinet including being in circular ring type, the box cavity inside, which is equipped with, to be added
Hot device, box cavity outside are equipped with spiral magnetic stirrer, insulating layer are equipped between heater and spiral magnetic stirrer；Spiral
Magnetic stirrer, heater are controlled by control system.
2. a kind of heating device of spiral electromagnetic agitation according to claim 1, it is characterised in that: the spiral electromagnetism
Vacuum (-tight) housing is equipped with outside the heating device of stirring, vacuum (-tight) housing connects vacuum pump.
3. a kind of heating device of spiral electromagnetic agitation according to claim 1, it is characterised in that: heater passes through heating
The fixed device of device is connect with cabinet；Spiral magnetic stirrer is connect by bolt with cabinet.
4. a kind of heating device of spiral electromagnetic agitation according to claim 1, it is characterised in that: heater is using induction
Heating is equipped with water-cooling system.
5. a kind of side for preparing double deoxidizer using spiral electromagnetic stirring heater described in claims 1 or 22 or 3 or 4
Method includes the following steps:
1) it for the smelting containing easy oxidation metal and to the deoxidier of volume concentration of gas phase < 1% in double deoxidizer, opens true
Sky pump guarantees that air pressure carries out next step after being less than 1Pa again in vacuum (-tight) housing；
2) alloy furnace is prepared to be put into heating device；If without containing easy oxidation metal or to complex deoxidization in double deoxidizer
Gas content no requirement (NR) in agent, can not execute step 1), directly progress step 2)；
3) low-melting-point metal to be melted or alloy alloy is put into prepare in furnace；
4) heating device is opened to heat metal or alloy；
5) when being higher than 50~200 DEG C of metal or alloy fusing point, heat preservation disconnected heating device after 10~30 minutes；
6) it opens magnetic stirrer to be stirred molten metal, 50~600A of electric current, the 1~50Hz of frequency of electromagnetic agitation；
7) solid particle of high-melting-point and infusibility is poured into and fills the alloy of molten metal and prepares in furnace, low-melting-point metal liquid surface
Solid particle with the inside for flowing into melt of liquid can stop that solid particle is added when reaching composition design requirement；
8) double deoxidizer after solidifying, which passes through, to be crushed, is stand-by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710984815.1A CN109694937A (en) | 2017-10-20 | 2017-10-20 | Spiral electromagnetic stirring heater and its method for preparing double deoxidizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710984815.1A CN109694937A (en) | 2017-10-20 | 2017-10-20 | Spiral electromagnetic stirring heater and its method for preparing double deoxidizer |
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| Publication Number | Publication Date |
|---|---|
| CN109694937A true CN109694937A (en) | 2019-04-30 |
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| CN201710984815.1A Pending CN109694937A (en) | 2017-10-20 | 2017-10-20 | Spiral electromagnetic stirring heater and its method for preparing double deoxidizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676381A (en) * | 2020-06-22 | 2020-09-18 | 江苏江南铁合金有限公司 | Process for stirring alloy liquid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708531A (en) * | 2009-09-23 | 2010-05-19 | 清华大学 | Method for improving fluidity of alloy melt and rotating electromagnetic field generation device |
| CN105755299A (en) * | 2014-12-18 | 2016-07-13 | 北京有色金属研究总院 | Device and method for preparing low-cost particulate reinforced aluminum matrix composite material |
| CN106086530A (en) * | 2016-05-31 | 2016-11-09 | 江苏大学 | The preparation method of a kind of in-situ Al-base composition and device thereof |
| CN207418801U (en) * | 2017-10-20 | 2018-05-29 | 鞍钢股份有限公司 | Spiral electromagnetic stirring heater |
-
2017
- 2017-10-20 CN CN201710984815.1A patent/CN109694937A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708531A (en) * | 2009-09-23 | 2010-05-19 | 清华大学 | Method for improving fluidity of alloy melt and rotating electromagnetic field generation device |
| CN105755299A (en) * | 2014-12-18 | 2016-07-13 | 北京有色金属研究总院 | Device and method for preparing low-cost particulate reinforced aluminum matrix composite material |
| CN106086530A (en) * | 2016-05-31 | 2016-11-09 | 江苏大学 | The preparation method of a kind of in-situ Al-base composition and device thereof |
| CN207418801U (en) * | 2017-10-20 | 2018-05-29 | 鞍钢股份有限公司 | Spiral electromagnetic stirring heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676381A (en) * | 2020-06-22 | 2020-09-18 | 江苏江南铁合金有限公司 | Process for stirring alloy liquid |
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