CN110421128A - A method of the ultra-thin band spray of iron based nano crystal is improved with lumber recovery - Google Patents
A method of the ultra-thin band spray of iron based nano crystal is improved with lumber recovery Download PDFInfo
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- CN110421128A CN110421128A CN201910749218.XA CN201910749218A CN110421128A CN 110421128 A CN110421128 A CN 110421128A CN 201910749218 A CN201910749218 A CN 201910749218A CN 110421128 A CN110421128 A CN 110421128A
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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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/113—Treating the molten metal by vacuum treating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
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- Treatment Of Steel In Its Molten State (AREA)
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Abstract
The present invention relates to a kind of ultra-thin bands of raising iron based nano crystal to spray the method with lumber recovery, comprising: master alloy is molten into molten steel, 10~12 minutes is kept the temperature at 1400~1410 DEG C, vacuumizes；Refining slag is added into 1350 DEG C~1360 DEG C of nozzle packet to preparatory heat preservation；By above-mentioned molten steel vacuum breaker under vacuum conditions, the steel slag of molten steel surface is chosen completely, then imports molten steel in nozzle packet；The sealing of nozzle packet, adds inert gas shielding, when continuing to be heated to molten steel 1350 DEG C~1360 DEG C in nozzle packet, improves inert gas pressure to 0.15~0.16mPa, flows to molten steel on atwirl cooling copper roller by nozzle, be quenched and solidified as band.The ultra-thin band spray band lumber recovery of iron based nano crystal is improved, zone face presentation quality is improved, reduces production cost.
Description
Technical field
The invention belongs to technical field of smelting, and in particular to the ultra-thin band production technology of iron based nano crystal, especially one kind mention
The high ultra-thin band of iron based nano crystal sprays the method with lumber recovery.
Background technique
Disclosing the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without certainty
It is considered as recognizing or implying in any form that information composition has become existing skill well known to persons skilled in the art
Art.
Fe-Si-B-Cu-Nb serial nano crystalline substance soft magnetic materials has excellent performance: high saturated magnetic induction
(1.24T), high initial permeability (106), low specific loss (P) and good temperature stability.The device of this material production
Part has many advantages, such as that performance is high, small in size, light weight, is widely used in precision current transformer, Switching Power Supply, high power switch
Power transformer, the components such as reactor, filter and anti-EMI materials.
(18 μm~25 μm) spray band techniques of the brilliant ultra-thin band of Fe-Si-B-Cu-Nb serial nano are as follows at present, match according to ingredient
Than ingredient, it is smelted into master alloy, then master alloy is added in vacuum intermediate-frequency furnace and is melted, vacuumizes degassing after reaching certain temperature
De- to be mingled with, then molten steel, is poured into nozzle packet by chute by vacuum breaker, is then sealed nozzle packet, is passed through argon gas, nozzle band has
Heating function after being warming up to certain temperature, increases argon pressure, makes molten steel by the nozzle under nozzle packet, flow to high speed rotation
Cooling copper roller on, be quenched and solidified as band.
Current this production technology is 0.2mm~0.3mm since nozzle mouth slit width degree is smaller, often during spraying band
There is the case where field trash blocks up nozzle, nozzle, which is blocked after nozzle, just will appear the bad situation of zone face, and continuing production just will appear
The case where nozzle is plugged completely, Baogang's water cannot have been sprayed completely, nozzle can only have been destroyed, and molten steel is poured into accident crucible
In.
Using current this production technology, spray band lumber recovery is unstable, and lumber recovery is lower, lumber recovery be 70% with
Under, and zone face presentation quality is unstable.The brilliant ultra-thin band production cost of Fe-Si-B-Cu-Nb serial nano is higher.
Summary of the invention
In order to overcome the above problem, the present invention provides a kind of ultra-thin bands of raising iron based nano crystal to spray the side with lumber recovery
Method.The ultra-thin band spray band lumber recovery of iron based nano crystal is improved, zone face presentation quality is improved, reduces production cost.
To realize the above-mentioned technical purpose, The technical solution adopted by the invention is as follows:
A method of the ultra-thin band spray of iron based nano crystal is improved with lumber recovery, comprising:
Master alloy is molten into molten steel, 10~12 minutes is kept the temperature at 1400~1410 DEG C, vacuumizes；
Refining slag is added into 1350 DEG C~1360 DEG C of nozzle packet to preparatory heat preservation；
By molten steel vacuum breaker under vacuum conditions, the steel slag of molten steel surface is chosen completely, molten steel is then imported into nozzle
Bao Zhong；
The sealing of nozzle packet, adds inert gas shielding, when continuing to be heated to molten steel 1350 DEG C~1360 DEG C in nozzle packet,
Inert gas pressure is improved to 0.15~0.16mPa, flows to molten steel on atwirl cooling copper roller by nozzle, chilling is solidifying
Admittedly becoming band.
The application does not make particularly to limit to the material of master alloy, can be selected according to specific production requirement, In
In some embodiments, the master alloy is Fe-Si-B-Cu-Nb serial nano crystalline substance soft magnetic materials, by the ingredient of following parts by weight
Composition: 6%~9%Si, 1.3%~2.2%B, 0.7%~1.5%Cu, 4.5%~6.5%Nb, Yu Wei Fe.Manufactured iron
The ultra-thin band of base nanometer crystal can satisfy precision current transformer, Switching Power Supply, high power switch power-source transformer, reactor, filter
The requirement of the devices such as wave device or anti-EMI materials.
In some embodiments, the master alloy comprises the following components in parts by weight: 8.8%Si, 1.55%B, 1.3%
Cu, 5.6%Nb, Yu Wei Fe.The ultra-thin band of prepared iron based nano crystal has higher initial permeability, maximum permeability, power
Learn function admirable.
During the application is to spray band, spray nozzle clogging carries out system research and analysis, discovery: causing spray band to stop, zone face
The main matter of difference is exactly SiO2Field trash.Therefore, in some embodiments, the refining slag is by following parts by weight at grouping
At: 45~50 parts of CaO, 25~30 parts of Al2O3, 10~15 parts of SiO2, 5~10 parts of CaF, 5~10 parts of NaCO3.Research is found: should
Refining slag melting point is lower (1350 DEG C or less), and fusing point is low after mixing with the field trash in molten steel；Meanwhile refining slag and a part of steel
Field trash in liquid forms steel slag, and steel slag can play the role of assembling the field trash in molten steel, keeps the field trash in molten steel poly-
Collect and float more quickly, after floating to surface, steel slag can better dross inclusion adsorption.Operation result shows: adopting
It can preferably be assembled with the refining slag, adsorb SiO2Field trash improves lumber recovery and zone face quality.
The granularity of refining slag is smaller, and the specific surface area of refining slag is bigger, and contact of the slag with molten steel just more sufficiently, is conducive to pass
Matter heat transfer.Therefore, in some embodiments, the granularity of the refining slag is 40 mesh hereinafter, the mass transfer improved inside refining slag passes
Heat, it is easier to generate the compound of low melting point.
In some embodiments, the time vacuumized is 10~12 minutes.The effect vacuumized is degassing, removal folder
It is miscellaneous.It vacuumizes, guarantees that vacuum degree keeps 10 minutes vacuum in 67Pa or less, then vacuum breaker.
It is poor to the adsorption effect of the field trash in molten steel if the dosage of refining slag is very few, but the dosage of refining slag reaches one
After determining degree, the dosage for continuing growing refining slag promotes less the adsorption effect of the field trash in molten steel.Therefore, in some realities
It applies in example, the mass ratio of the master alloy and concise slag is 200:1~1.5, effectively to adsorb the field trash in molten steel, is improved
Lumber recovery and zone face quality.
In some embodiments, the inert gas is argon gas.It is to prevent molten steel from wrapping in the purpose of nozzle packet applying argon gas
Middle oxidation, and the later period will use the pressure of argon gas that molten steel is extruded from nozzle.Other inert gases, present factory can be used
Family's production mainstream uses argon gas.
The present invention also provides the ultra-thin bands of iron based nano crystal of any above-mentioned method preparation.
The present invention also provides the ultra-thin bands of above-mentioned iron based nano crystal in manufacture precision current transformer, Switching Power Supply, big
Application in power switch power source transformer, reactor, filter or anti-EMI materials.
The beneficial effects of the present invention are:
(1) this method is to spray to improve in band technique in conventional pressure, creative that refining slag is added in nozzle packet,
Achieve the effect that molten steel obtains removal of inclusions in nozzle packet again, guaranteed the degree of purity of molten steel, has improved MOLTEN STEEL FLOW
Property.
(2) using this method produce the ultra-thin band of iron based nano crystal, can make spray band lumber recovery from 70% promoted to 90% with
On, spray band lumber recovery is substantially increased, and reduce production cost, improves zone face quality.
(3) operating method of the application it is simple, it is at low cost, have universality, be easy to large-scale production.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the ultra-thin band zone face photo of iron based nano crystal prepared by embodiment 1；
Fig. 2 is the ultra-thin band zone face photo of iron based nano crystal prepared by comparative example 1.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used in this application have logical with the application person of an ordinary skill in the technical field
The identical meanings understood.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, spray that band lumber recovery is unstable, and lumber recovery is lower for current amorphous band, and
The unstable problem of zone face presentation quality.Therefore, the present invention proposes that a kind of ultra-thin band of raising iron based nano crystal is sprayed with lumber recovery
Method.
1, refining slag: ingredient is (mass fraction), 50%CaO, 30%Al2O3, 10%SiO2, 5%CaF, 5%NaCO3。
Granularity is 40 mesh or less.
Fe-Si-B-Cu-Nb serial nano crystalline substance soft magnetic materials ingredient (mass fraction): Fe surplus, 6%~9%Si, 1.3%
~2.2%B, 0.7%~1.5%Cu, 4.5%~6.5%Nb.Preferred component: Fe surplus, 8.8%Si, 1.55%B, 1.3%
Cu, 5.6%Nb.
2, process program
By taking the pressure belt spraying machine of 200kg as an example.
(1) melted master alloy, power transmission heating is added in frequency furnace in a vacuum.
(2) with master alloy chemical conversion molten steel in fusion process, master alloy is gradually added, until filling it up with intermediate frequency furnace, master alloy
Additional amount is 200kg, continues to heat up.
(3) when liquid steel temperature is raised to 1400 DEG C, 10 minutes are kept the temperature.
(4) after keeping the temperature, have a power failure, the sealing of vacuum intermediate-frequency furnace vacuumizes, and takes out 10 minutes.
(5) 1kg refining slag is added in the nozzle packet in preparatory heat preservation to 1350 DEG C.
(6) vacuum intermediate-frequency furnace vacuum breaker is chosen the steel slag of molten steel surface completely, and molten steel is then poured into spray by diversion trench
In mouth packet.
(7) nozzle packet seals, and argon gas is added to protect.Nozzle packet continues to heat molten steel, when liquid steel temperature reaches 1350 DEG C, mentions
High argon pressure pulls up stopper rod, flows to molten steel on atwirl cooling copper roller by nozzle, be quenched and solidified to 0.15mPa
As band.
Fe-Si-B-Cu-Nb serial nano crystalline substance soft magnetic materials ingredient (mass fraction): Fe surplus, 6%~9%Si, 1.3%
~2.2%B, 0.7%~1.5%Cu, 4.5%~6.5%Nb.Preferred component: Fe surplus, 8.8%Si, 1.55%B, 1.3%
Cu, 5.6%Nb.
Refining slag: ingredient is (mass fraction), 40%~60%CaO, 20%~40%Al2O3, 5%~15%SiO2,
3%~7%CaF, 3%~7%NaCO3.Granularity is 40 mesh or less.It is preferred that 50%CaO, 30%Al2O3, 10%SiO2, 5%
CaF, 5%NaCO3.Granularity is 40 mesh or less.
Middle frequency furnace capacity is 50kg~1t.
1300 DEG C~1500 DEG C of step (3) liquid steel temperature.Soaking time 0 minute~30 minutes.
Step (4) pumpdown time 5 minutes~20 minutes.
1300 DEG C~1400 DEG C of step (5) nozzle packet temperature, 0.5~3kg refining slag.
1270 DEG C~1400 DEG C of step (7) liquid steel temperature.Argon pressure is 0.1mPa~0.25mPa.
It is illustrated below by way of technical solution of the specific embodiment to the application.
Embodiment 1:
Refining slag: ingredient is (mass fraction), 50%CaO, 30%Al2O3, 10%SiO2, 5%CaF, 5%NaCO3.Grain
Degree is 40 mesh.
Fe-Si-B-Cu-Nb serial nano crystalline substance soft magnetic materials ingredient (mass fraction): Fe surplus, 8.8%Si, 1.55%B,
1.3%Cu, 5.6%Nb.
2, process program
By taking the pressure belt spraying machine of 200kg as an example.
(1) melted master alloy, power transmission heating is added in frequency furnace in a vacuum.
(2) with master alloy chemical conversion molten steel in fusion process, master alloy is gradually added, until filling it up with intermediate frequency furnace, master alloy
Additional amount is 200kg, continues to heat up.
(3) when liquid steel temperature is raised to 1400 DEG C, 10 minutes are kept the temperature.
(4) after keeping the temperature, have a power failure, the sealing of vacuum intermediate-frequency furnace vacuumizes, and takes out 10 minutes.
(5) 1kg refining slag is added in the nozzle packet in preparatory heat preservation to 1350 DEG C.
(6) vacuum intermediate-frequency furnace vacuum breaker is chosen the steel slag of molten steel surface completely, and molten steel is then poured into spray by diversion trench
In mouth packet.
(7) nozzle packet seals, and argon gas is added to protect.Nozzle packet continues to heat molten steel, when liquid steel temperature reaches 1350 DEG C, mentions
High argon pressure pulls up stopper rod, flows to molten steel on atwirl cooling copper roller by nozzle, be quenched and solidified to 0.15mPa
As band, shown in Fig. 1, spray band lumber recovery is 92%.
Embodiment 2:
Refining slag: ingredient is (mass fraction), 45%CaO, 25%Al2O3, 15%SiO2, 5%CaF, 10%NaCO3.Grain
Degree is 50 mesh.
Fe-Si-B-Cu-Nb serial nano crystalline substance soft magnetic materials ingredient (mass fraction): Fe surplus, 6%Si, 1.3%B,
0.7%Cu, 4.5%Nb.
2, process program
By taking the pressure belt spraying machine of 200kg as an example.
(1) melted master alloy, power transmission heating is added in frequency furnace in a vacuum.
(2) with master alloy chemical conversion molten steel in fusion process, master alloy is gradually added, until filling it up with intermediate frequency furnace, master alloy
Additional amount is 200kg, continues to heat up.
(3) when liquid steel temperature is raised to 1405 DEG C, 11 minutes are kept the temperature.
(4) after keeping the temperature, have a power failure, the sealing of vacuum intermediate-frequency furnace vacuumizes, and takes out 10 minutes.
(5) 1kg refining slag is added in the nozzle packet in preparatory heat preservation to 1355 DEG C.
(6) vacuum intermediate-frequency furnace vacuum breaker is chosen the steel slag of molten steel surface completely, and molten steel is then poured into spray by diversion trench
In mouth packet.
(7) nozzle packet seals, and argon gas is added to protect.Nozzle packet continues to heat molten steel, when liquid steel temperature reaches 1355 DEG C, mentions
High argon pressure pulls up stopper rod, flows to molten steel on atwirl cooling copper roller by nozzle, be quenched and solidified to 0.15mPa
As band.
Embodiment 3:
Refining slag: ingredient is (mass fraction), 45%CaO, 25%Al2O3, 10%SiO2, 10%CaF, 10%NaCO3。
Granularity is 60 mesh.
Fe-Si-B-Cu-Nb serial nano crystalline substance soft magnetic materials ingredient (mass fraction): Fe surplus, 9%Si, 2.2%B,
1.5%Cu, 6.5%Nb.
2, process program
By taking the pressure belt spraying machine of 200kg as an example.
(1) melted master alloy, power transmission heating is added in frequency furnace in a vacuum.
(2) with master alloy chemical conversion molten steel in fusion process, master alloy is gradually added, until filling it up with intermediate frequency furnace, master alloy
Additional amount is 200kg, continues to heat up.
(3) when liquid steel temperature is raised to 1410 DEG C, 12 minutes are kept the temperature.
(4) after keeping the temperature, have a power failure, the sealing of vacuum intermediate-frequency furnace vacuumizes, and takes out 10 minutes.
(5) 1kg refining slag is added in the nozzle packet in preparatory heat preservation to 1360 DEG C.
(6) vacuum intermediate-frequency furnace vacuum breaker is chosen the steel slag of molten steel surface completely, and molten steel is then poured into spray by diversion trench
In mouth packet.
(7) nozzle packet seals, and argon gas is added to protect.Nozzle packet continues to heat molten steel, when liquid steel temperature reaches 1360 DEG C, mentions
High argon pressure pulls up stopper rod, flows to molten steel on atwirl cooling copper roller by nozzle, be quenched and solidified to 0.15mPa
As band.
Comparative example 1；
Using the spray band technique of traditional brilliant ultra-thin band of Fe-Si-B-Cu-Nb serial nano: according to Fe-Si-B-Cu-Nb system
Column nano crystal soft magnetic material composition proportion ingredient, is smelted into master alloy, and then master alloy is added in vacuum intermediate-frequency furnace and is melted, is reached
Degassing in 10 minutes is vacuumized after to 1400 DEG C and is taken off and is mingled with, and then molten steel, is poured into nozzle packet by chute, then sealed by vacuum breaker
Nozzle packet is passed through argon gas, and nozzle band has heating function, after being warming up to 1350 DEG C, increases argon pressure to 0.15mPa, makes steel
Liquid passes through the nozzle under nozzle packet, flows on high-speed rotating cooling copper roller, is quenched and solidified as band, as shown in Fig. 2, spray band
Lumber recovery is 70%.
Wherein, the ingredient proportion, additional amount and other specific process conditions of master alloy are same as Example 1.
Band lumber recovery is sprayed it is found that the processing method of the application not only substantially increases by the comparison of Fig. 1,2, reduces production
Cost, and zone face quality significantly improves.
Finally it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to this hair
It is bright, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still
It can modify to technical solution documented by previous embodiment, or part is equivalently replaced.It is all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.Above-mentioned, although specific embodiments of the present invention have been described, and it is not intended to limit the protection scope of the present invention, institute
Category field technical staff should be understood that based on the technical solutions of the present invention those skilled in the art do not need to pay wound
The various modifications or changes that the property made labour can be made are still within protection scope of the present invention.
Claims (10)
1. a kind of ultra-thin band of raising iron based nano crystal sprays the method with lumber recovery characterized by comprising
Master alloy is molten into molten steel, 10~12 minutes is kept the temperature at 1400~1410 DEG C, vacuumizes；
Refining slag is added into 1350 DEG C~1360 DEG C of nozzle packet to preparatory heat preservation；
By molten steel vacuum breaker under vacuum conditions, the steel slag of molten steel surface is chosen completely, then imports molten steel in nozzle packet；
The sealing of nozzle packet, adds inert gas shielding, when continuing to be heated to molten steel 1350 DEG C~1360 DEG C in nozzle packet, improves
Inert gas pressure flows to molten steel on atwirl cooling copper roller by nozzle, is quenched and solidified into 0.15~0.16mPa
For band.
2. improving the ultra-thin band of iron based nano crystal as described in claim 1 sprays the method with lumber recovery, which is characterized in that the mother
Alloy is Fe-Si-B-Cu-Nb serial nano crystalline substance soft magnetic materials, is comprised the following components in parts by weight: 6%~9%Si,
1.3%~2.2%B, 0.7%~1.5%Cu, 4.5%~6.5%Nb, Yu Wei Fe.
3. improving the ultra-thin band of iron based nano crystal as described in claim 1 sprays the method with lumber recovery, which is characterized in that the mother
Alloy comprises the following components in parts by weight: 8.8%Si, 1.55%B, 1.3%Cu, 5.6%Nb, Yu Wei Fe.
4. improving the ultra-thin band of iron based nano crystal as described in claim 1 sprays the method with lumber recovery, which is characterized in that the essence
Refining slag comprises the following components in parts by weight: 45~50 parts of CaO, 25~30 parts of Al2O3, 10~15 parts of SiO2, 5~10 parts of CaF, 5
~10 parts of NaCO3。
5. improving the ultra-thin band of iron based nano crystal as described in claim 1 sprays the method with lumber recovery, which is characterized in that the essence
The granularity for refining slag is 40 mesh or less.
6. improving the ultra-thin band of iron based nano crystal as described in claim 1 sprays the method with lumber recovery, which is characterized in that the pumping
The time of vacuum is 10~12 minutes.
7. improving the ultra-thin band of iron based nano crystal as described in claim 1 sprays the method with lumber recovery, which is characterized in that the mother
The mass ratio of alloy and concise slag is 200:1~1.5.
8. improving the ultra-thin band of iron based nano crystal as described in claim 1 sprays the method with lumber recovery, which is characterized in that described lazy
Property gas be argon gas.
9. the ultra-thin band of iron based nano crystal of the described in any item method preparations of claim 1-8.
10. the ultra-thin band of iron based nano crystal as claimed in claim 9 in manufacture precision current transformer, Switching Power Supply, high-power open
Close the application in power transformer, reactor, filter or anti-EMI materials.
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| CN201910749218.XA CN110421128B (en) | 2019-08-14 | 2019-08-14 | Method for improving yield of iron-based nanocrystalline ultra-thin strip spraying strip |
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| CN201910749218.XA CN110421128B (en) | 2019-08-14 | 2019-08-14 | Method for improving yield of iron-based nanocrystalline ultra-thin strip spraying strip |
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| CN113990597A (en) * | 2021-10-19 | 2022-01-28 | 河北申科磁性材料有限公司 | Strip, high initial permeability amorphous nanocrystalline alloy, magnetic core and open-ended transformer |
| CN114318177A (en) * | 2021-12-13 | 2022-04-12 | 常州创明磁性材料科技有限公司 | Preparation method of iron-based amorphous nanocrystalline alloy |
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| CN110421128B (en) | 2021-04-06 |
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