CN106755792B - A kind of heat treatment method of amorphous alloy core - Google Patents
A kind of heat treatment method of amorphous alloy core Download PDFInfo
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- CN106755792B CN106755792B CN201611121724.7A CN201611121724A CN106755792B CN 106755792 B CN106755792 B CN 106755792B CN 201611121724 A CN201611121724 A CN 201611121724A CN 106755792 B CN106755792 B CN 106755792B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 37
- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 79
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000137 annealing Methods 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000004321 preservation Methods 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 238000010926 purge Methods 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 5
- 230000001965 increasing effect Effects 0.000 abstract description 4
- 239000005300 metallic glass Substances 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000004907 flux Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
- H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Heat Treatment Of Articles (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a kind of heat treatment method of amorphous alloy core, it includes：Step 1, amorphous alloy core starts nitrogen purge gas program, nitrogen is passed through into stove into stove；Step 2, when annealing furnace intracavitary oxygen content is less than 10%, temperature program is carried out；Step 3, apply rotating excitation field when iron core temperature reaches 200 DEG C, when rotation remains that iron core plane is parallel with magnetic direction；Step 4, continue to heat up, heat preservation is proceeded by when all iron core temperature reach optimum annealing temperature, which refers to the control of iron core temperature at 320~370 DEG C；Step 5, stop heating after heat preservation and carry out cooling process, come out of the stove when iron core temperature is cooled to room temperature iron core, complete the heat treatment of amorphous alloy core.The present invention applies rotating excitation field in annealing process, and the advantage of comprehensive horizontal and vertical magnetic field processing is lost while increasing amorphous alloy core magnetic conductivity and reduces, and can be obviously improved the magnetic property of non-crystaline amorphous metal.
Description
Technical field
The invention belongs to transformer core manufacturing fields, are related to a kind of iron core heat treatment process, and in particular to a kind of amorphous
The heat treatment method of alloy core.
Background technology
Amorphous alloy strips are a kind of new alloy materials to come out the 1970s, it is using international advanced super urgency
Liquid metal is directly cooled into the solid strip of 0.02~0.03mm of thickness by refrigeration technique with 1,000,000 DEG C/s cooling velocities, by
Have little time crystallization in liquid metal and retain the disorderly arranged state of aggregation of liquid atomic in greenhouse or low temperature, atom is no longer
In long-range order, periodical and regularly arranged, but it is in a kind of longrange disorder ordered state.It is exactly this " atomic arrangement without
Sequence " structure so that there is no the crystal boundary, sub boundary and the Second Phase Particles that hinder magnetic domain wall moving in non-crystaline amorphous metal, therefore amorphous closes
Gold is easy to magnetize, and mangneto loss is minimum, this results in it to have very excellent soft magnet performance, corrosion resistance, wearability, height
Hardness, high resistivity etc..Amorphous alloy core is exactly to be process using amorphous band, due to high resistivity, low magnetic hysteresis
The features such as loss, low eddy-current loss, can be magnetized and be demagnetized with smaller energy, and no-load loss is than using cold-reduced silicon sheet
Traditional transformer reduces by 60 ~ 80%, and energy-saving effect is notable.
Iron-based amorphous alloy ribbon material in preparation process fast quenching chilling, batch, transport, easily being produced in the processes such as excision forming
Raw stress, it is therefore desirable to which in its Curie temperature heat treated below, magnetic property obtains larger raising, and annealing temperature must be low
In crystallization temperature, otherwise amorphous alloy strips, which can crystallize, makes amorphous characteristic disappear.But it is crisp after amorphous band heat treatment
Property enhancing, easily generate fragment during following process, thus suitable annealing temperature should ensure to eliminate as possible in iron core
Stress improves its magnetic characteristic, considers the brittleness for reducing amorphous band, the operation risk for avoiding fragment from bringing again.
Invention content
Present invention aim to address in existing annealing, the magnetic property of amorphous alloy strips is bad and no-load loss
The problems such as, a kind of magnetic-field annealing technique is provided, applies rotating excitation field in annealing process, is changed by the uniaxial anisotropy inducted
Hysteresis loop (B-H) shape for becoming material, to meet certain special performance requirements to material.
In order to achieve the above objectives, the present invention provides a kind of heat treatment method of amorphous alloy core, the heat treatment methods
It comprises the steps of：
Step 1, amorphous alloy core starts nitrogen purge gas program, nitrogen is passed through into stove into stove；It is passed through the purpose of nitrogen
It is that can lead to iron because Fe-based amorphous alloy iron core is easy to be influenced and aoxidized by temperature and humidity in high-temperature heat treatment
The no-load performance of the heart deteriorates；
Step 2, when annealing furnace intracavitary oxygen content is less than 10%, temperature program is carried out；
Step 3, apply rotating excitation field when iron core temperature reaches 200 DEG C, when rotation remains iron core plane and magnetic field
Direction is parallel；
Step 4, continue to heat up, proceed by heat preservation when all iron core temperature reach optimum annealing temperature, this is most preferably moved back
Fiery temperature refers to the control of iron core temperature at 320~370 DEG C, the optimum annealing temperature of iron core according to the Curie temperature of amorphous band come
It determines, slightly below 30 ~ 50 degrees Celsius of Curie temperature;
Step 5, stop heating after heat preservation and carry out cooling process, come out of the stove when iron core temperature is cooled to room temperature iron core, it is complete
At the heat treatment of amorphous alloy core.
Preferably, in step 1, the flow for being passed through nitrogen is more than 50m3/h。
Preferably, also include real-time monitoring step in the temperature-rise period of step 2：Using a thermocouple for measuring furnace temperature,
And multiple thermocouples are inserted into respectively inside multiple iron cores, the real time temperature for monitoring amorphous alloy core.Further, root
The iron core temperature monitored when factually to adjust the heating power of heat-treatment furnace in real time, to ensure that iron core is heated evenly unanimously.If more
A thermocouple temperature measurement differs greatly, and slows down heating rate, avoids, since individual iron core temperature lags are in furnace temperature, influencing iron core annealing
Effect.
Preferably, in step 3, magnetic field intensity in 2000A/m or more, magnetic field rotating speed takes 30 according to the size of iron core~
300rpm。
Preferably, in step 4, soaking time controls depending on area of core section at 100~300 minutes.
Preferably, in step 5, cooling down mode is using air-cooled.Further, the air-cooled step in step 5 refers to opening
It opens cooling blower to extract hot-air out of furnace body out, cooling rate is more than 6 DEG C/min, and iron core temperature is down to 200 DEG C and closes rotation
Magnetic field is come out of the stove when iron core temperature is cooled to room temperature iron core.
The amorphous alloy core selects atomic percent for Fe（78-82）B（9-13）Si（4-13）It is Fe-based amorphous
The amorphous alloy core that alloy strip steel rolled stock makes.
The present invention is increased using the iron core remanent magnetism and magnetic conductivity of longitudinal magnetic field annealing, and loss becomes larger；Transverse magnetic field annealing
Iron core has the characteristics that low residual magnetic flux density and permanent magnetic conductivity, loss reduce；And rotating excitation field has horizontal and vertical magnetic field
The Comprehensive Characteristics of processing, that is, loss reduces while increasing magnetic conductivity, and can be obviously improved the magnetic property of non-crystaline amorphous metal.
Description of the drawings
Fig. 1 is a kind of process flow chart of the heat treatment method of amorphous alloy core of the present invention.
Specific implementation mode
Below in conjunction with attached drawing, by specific embodiment, the invention will be further described, these embodiments are merely to illustrate
The present invention is not limiting the scope of the invention.
It is Fe that the method for annealing of the present invention, which is suitable for atomic percent,（78-82）B（9-13）Si（4-13）It is Fe-based amorphous
The amorphous alloy core that alloy strip steel rolled stock makes.
As shown in Figure 1, the heat treatment process flow of the present invention includes：
S1, iron core are passed through nitrogen into stove：It is more than 50m into nitrogen purge gas program, nitrogen flow after stove, is started in iron core3/
H can lead to iron because Fe-based amorphous alloy iron core is easy to be influenced and aoxidized by temperature and humidity in high-temperature heat treatment
The no-load performance of the heart deteriorates.
S2 heats up to annealing furnace furnace chamber：When annealing furnace intracavitary oxygen content is less than 10%, temperature program is carried out,
In temperature-rise period, a thermocouple is for measuring furnace temperature, and in addition multiple thermocouples are inserted into respectively inside multiple iron cores, for monitoring
The real time temperature of amorphous alloy core.According to the iron core temperature of measurement, to adjust the heating power of heat-treatment furnace in real time, ensure iron
The heart is heated evenly unanimously, if multiple thermocouple temperature measurements differ greatly, slows down heating rate, is avoided due to individual iron core temperature lags
In furnace temperature, iron core annealing effect is influenced.
S3, iron core temperature open rotating excitation field when reaching 200 DEG C：According to technological requirement, apply in 200 DEG C of iron core temperature
Rotating excitation field；Rotating excitation field heat treatment be that sample is placed under a fixed magnetic field intensity, magnetic field intensity need in 2000A/m or more,
It is handled with certain rotation speed, rotary speed takes 30~300rpm according to the size of iron core, and when rotation remains iron core
Plane is parallel with magnetic direction.
S4 continues to heat up, and when all iron core temperature reach 320~370 DEG C, is kept the temperature：The best annealing temperature of iron core
The control of iron core temperature is spent at 320~370 DEG C, and actual temp is determined according to the ingredient of iron-based amorphous alloy ribbon material.Soaking time
Depending on area of core section, in general soaking time control stopped heating at 100~300 minutes after heat preservation.
S5, cools down to iron core, and iron core is come out of the stove：Cooling down mode using air-cooled, that is, open cooling blower by hot-air from
Extraction in furnace body, cooling rate are more than 6 DEG C/min, and iron core temperature is down to 200 DEG C of closing rotating excitation fields, when iron core temperature is down to
Room temperature back core is come out of the stove.
After simple longitudinal magnetic field annealing, coercivity reduces, and residual magnetic flux density and magnetic conductivity increase, and loss becomes larger；
After simple transverse magnetic field annealing, coercivity reduces, and has the characteristics that low residual magnetic flux density and permanent magnetic conductivity, loss subtract
It is small.And the present invention applies rotating excitation field in annealing process, the comprehensive horizontal and vertical magnetic field of rotating excitation field processing handles excellent
Gesture, while residual magnetic flux density and magnetic conductivity increase loss reduce, avoid loss after longitudinal magnetic field processing become larger and
The disadvantage of low residual magnetic flux density and permanent magnetic conductivity after transverse magnetic field processing, and coercivity reduces most multipotency and reaches 60%.
It is demonstrated experimentally that present invention reduces complexity and uncertainty that longitudinal magnetic field and transverse magnetic field apply simultaneously, this
Reduction is lost in heat treatment method in invention while amorphous alloy core magnetic conductivity is significantly increased, and can be obviously improved amorphous conjunction
The magnetic property of gold.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. a kind of heat treatment method of amorphous alloy core, which is characterized in that the heat treatment method comprises the steps of：
Step 1, amorphous alloy core starts nitrogen purge gas program, nitrogen is passed through into stove into stove；
Step 2, when annealing furnace intracavitary oxygen content is less than 10%, temperature program is carried out；
Step 3, apply rotating excitation field when iron core temperature reaches 200 DEG C, when rotation remains iron core plane and magnetic direction
It is parallel；Magnetic field intensity takes 30~300rpm in 2000A/m or more, magnetic field rotating speed according to the size of iron core；
Step 4, continue to heat up, when all iron core temperature reach optimum annealing temperature, be kept the temperature, which is
Refer to the control of iron core temperature at 320~370 DEG C；
Step 5, stop heating after heat preservation, start cooling process, come out of the stove when iron core temperature is cooled to room temperature iron core, complete non-
The heat treatment of peritectic alloy iron core；
The amorphous alloy core selects atomic percent for the Fe-based amorphous alloy of Fe (78-82) B (9-13) Si (4-13)
The amorphous alloy core that band makes.
2. the heat treatment method of amorphous alloy core as described in claim 1, which is characterized in that in step 1, be passed through nitrogen
Flow is more than 50m3/h。
3. the heat treatment method of amorphous alloy core as described in claim 1, which is characterized in that in the temperature-rise period of step 2
It also include real-time monitoring step：It is used to measure furnace temperature using a thermocouple and multiple thermocouples is inserted into respectively in multiple iron cores
Portion, the real time temperature for monitoring amorphous alloy core.
4. the heat treatment method of amorphous alloy core as claimed in claim 3, which is characterized in that the real-time monitoring step
Also include：According to the iron core temperature monitored in real time, to adjust the heating power of heat-treatment furnace in real time, to ensure that iron core is heated evenly
Unanimously.
5. the heat treatment method of amorphous alloy core as described in claim 1, which is characterized in that in step 4, the time of heat preservation
Depending on area of core section, control at 100~300 minutes.
6. the heat treatment method of amorphous alloy core as described in claim 1, which is characterized in that in step 5, the mode of cooling
Using air-cooled.
7. the heat treatment method of amorphous alloy core as claimed in claim 6, which is characterized in that the air-cooled step in step 5
Refer to opening cooling blower to extract hot-air out of furnace body out, cooling rate is more than 6 DEG C/min, and iron core temperature is down to 200 DEG C
Rotating excitation field is closed, is come out of the stove when iron core temperature is cooled to room temperature iron core.
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| CN107275068A (en) * | 2017-06-22 | 2017-10-20 | 上海日港置信非晶体金属有限公司 | A kind of manufacture method of the column amorphous alloy iron cores of three frame three |
| CN108010704A (en) * | 2017-11-28 | 2018-05-08 | 上海日港置信非晶体金属有限公司 | A kind of heat treatment method of amorphous alloy stereo roll iron core |
| CN112593052A (en) * | 2020-12-10 | 2021-04-02 | 青岛云路先进材料技术股份有限公司 | Iron-based amorphous alloy and annealing method of iron-based amorphous alloy |
| CN117305573B (en) * | 2023-11-30 | 2024-02-02 | 太原科技大学 | Capsule type tension-magnetic field coupling annealing furnace based on Helmholtz coil |
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| CN102737829A (en) * | 2012-06-21 | 2012-10-17 | 四川大学苏州研究院 | Heat treatment process of low-loss amorphous alloy iron core for transformer |
| CN102965478A (en) * | 2012-12-07 | 2013-03-13 | 青岛云路新能源科技有限公司 | Heat treatment method for iron-based amorphous strip |
| CN103050210A (en) * | 2013-01-07 | 2013-04-17 | 钢铁研究总院 | Amorphous soft magnet core and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102737829A (en) * | 2012-06-21 | 2012-10-17 | 四川大学苏州研究院 | Heat treatment process of low-loss amorphous alloy iron core for transformer |
| CN102965478A (en) * | 2012-12-07 | 2013-03-13 | 青岛云路新能源科技有限公司 | Heat treatment method for iron-based amorphous strip |
| CN103050210A (en) * | 2013-01-07 | 2013-04-17 | 钢铁研究总院 | Amorphous soft magnet core and manufacturing method thereof |
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