CN110373522A - A kind of amorphous core and its method for annealing of refusion and smelting - Google Patents
A kind of amorphous core and its method for annealing of refusion and smelting Download PDFInfo
- Publication number
- CN110373522A CN110373522A CN201910609529.6A CN201910609529A CN110373522A CN 110373522 A CN110373522 A CN 110373522A CN 201910609529 A CN201910609529 A CN 201910609529A CN 110373522 A CN110373522 A CN 110373522A
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- Prior art keywords
- temperature
- heating
- annealing
- refusion
- amorphous core
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- 238000000137 annealing Methods 0.000 title claims abstract description 49
- 238000003723 Smelting Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 54
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000001131 transforming effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- NFCWKPUNMWPHLM-UHFFFAOYSA-N [Si].[B].[Fe] Chemical compound [Si].[B].[Fe] NFCWKPUNMWPHLM-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 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
- C21D1/04—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
- C21D1/26—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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a kind of amorphous core of refusion and smelting and its method for annealing, belong to the manufacture and application field of distribution transformer cores.The present invention heats up to three sections of temperature of amorphous core point using default heating rate, and when heating reaches the first heating predetermined temperature in the first stage, applies magnetic field.Enter first stage cooling after phase III heating, when temperature is reduced to the first cooling predetermined temperature, stops applying magnetic field；When in-furnace temperature is down to the second cooling predetermined temperature, amorphous core is taken out, entire annealing process is completed.The present invention can promote the performance of amorphous core after refusion and smelting, reduce the discrete type of amorphous core performance, and obtain the amorphous core of performance more preferably refusion and smelting.
Description
Technical field
The present invention relates to a kind of method for annealing of the amorphous core of refusion and smelting, belong to the manufactures of distribution transformer cores with
Application field.
Background technique
Amorphous alloy strips are just widely used in the distribution transformer manufacturing with its excellent electromagnetic performance, once releasing
Field.It is calculated according to 20 years design working lifes of amorphous distribution transforming, the amorphous distribution transforming of first batch of hanging net operation had reached using year
The upper limit is limited, the extensive concern that the amorphous core scrapped in distribution transforming has caused people how is recycled.Amorphous alloy core
Component be mainly iron, silicon, boron, the amorphous core scrapped is put into smelting furnace after oil removing abatement processes according to a certain percentage
In smelted again with raw material, and new amorphous band is made for producing amorphous core, it can be achieved that waste and old amorphous core
Effective recycling.
Refusion and smelting amorphous band, which refers to, melts regular industrial raw material (iron, silicon, boron) as after molten steel, and addition is no more than
The waste and old amorphous core of industrial raw materials total weight 30%, the amorphous band of spray after melting completely as molten steel.Refusion and smelting
Oxygen element content is lower than 30ppm in the amorphous band of spray, and nitrogen element content is lower than 15ppm.Due to waste and old using certain proportion
Three kinds of element ratios of iron silicon boron will appear fluctuation in amorphous band made of amorphous core mixed raw material, cause refusion and smelting non-
Crystal zone material performance discreteness is larger, and the annealing of the iron core of conventional amorphous band production requires not can be used directly refusion and smelting
On the amorphous core of amorphous band production, it can not be successfully and produce satisfactory amorphous core.
Summary of the invention
The present invention is to provide the amorphous core and its method for annealing of a kind of refusion and smelting, can promote amorphous iron after refusion and smelting
The performance of the heart reduces the discrete type of amorphous core performance, obtains the amorphous core of performance more preferably refusion and smelting.
In order to achieve the above objectives, the technical scheme adopted by the invention is that: a kind of annealing of the amorphous core of refusion and smelting
Method, comprising the following steps: will be sent into annealing furnace using the amorphous alloy core of refusion and smelting amorphous band production, starting is moved back
Stove temperature program presets heating rate, heats up into the first stage, when reaching the first heating predetermined temperature, is kept the temperature simultaneously
Start to apply magnetic field；Enter second stage heating according to default heating rate after first stage heating, reaches the second heating
When predetermined temperature, kept the temperature；Enter phase III heating, temperature in furnace according to default heating rate after second stage heating
Degree terminates to heat up when reaching 375 DEG C~385 DEG C, and keeps the temperature 115 min ~ 125min；Phase III enters first after heating up
Stage cooling stops applying magnetic field when temperature is reduced to the first cooling predetermined temperature；It is pre- that the second cooling is down to in-furnace temperature
When determining temperature, annealing fire door is opened, iron core completes entire annealing process by sending out in annealing furnace.
Further, before amorphous core enters annealing furnace, it is filled with drying compressed air into annealing furnace, makes annealing furnace
Interior water content is lower than 5%.
Further, after phase III heating, heating schedule is closed in furnace and persistently to being filled with drying in annealing furnace
Compressed air；After first stage cools down, stop to filling drying compressed air in furnace.
Further, the default heating rate is 250 DEG C/h, and the first heating predetermined temperature is 145 DEG C~155 DEG C, is protected
Temperature 5 min~15min, the magnetic field are longitudinal magnetic field.
Further, the first heating predetermined temperature is 150 DEG C, keeps the temperature 10 min.
Further, the second heating predetermined temperature is 245 DEG C ~ 255 DEG C, keeps the temperature 5 min~15min.
Further, the second heating predetermined temperature is 250 DEG C, 10min.
Further, the first cooling predetermined temperature is 195 DEG C ~ 205 DEG C, and the second cooling predetermined temperature is 95 DEG C
~105℃。
Further, the first cooling predetermined temperature is 200 DEG C, and the second cooling predetermined temperature is 100 DEG C.
The present invention is kept the temperature by setting multistage gradient, can increase being heated evenly for refusion and smelting amorphous core inside and outside
Property；Meanwhile the characteristics of for refusion and smelting amorphous alloy strips, to the heating and cooling speed of the amorphous core of production in annealing process
Rate, soaking time gradient apply magnetic direction etc. and are managed, to guarantee the equal of performance after the annealing of refusion and smelting amorphous core
Even property improves the performance of the amorphous core of refusion and smelting, reduces the discrete type of amorphous core performance.
The present invention also provides a kind of amorphous cores of refusion and smelting, the advantage is that: the total losses performance of amorphous core
5% is improved, power-performance improves 10%.
Detailed description of the invention
Fig. 1 is a kind of method for annealing flow diagram of the amorphous core of refusion and smelting provided in an embodiment of the present invention；
Fig. 2 shows the schematic diagram that annealing temperature changes over time in the embodiment of the present invention.
Specific embodiment
Essence in order to better understand the present invention is combined with specific embodiments below made the present invention with attached drawing further
It illustrates.
The present invention is suitable for the manufacture and application field of distribution transformer cores, and concrete operations are as shown in Figure 1:
(1) it will be sent into annealing furnace using the amorphous alloy core of refusion and smelting amorphous band production, starting reduces aqueous in furnace
Range sequence, is filled with drying compressed air in annealing furnace, so that water content in annealing furnace is lower than 5%, is conducive to subsequent heating.
(2) when water content is lower than 5% in annealing furnace, start annealing furnace temperature program, annealing furnace heating rate is set as
It 250 DEG C/h, heats up into the first stage.
(3) when in-furnace temperature increases to the first heating predetermined temperature, stop heating in furnace, kept the temperature and start to apply
Longitudinal magnetic field.The first heating predetermined temperature is 150 DEG C, keeps the temperature 10 min.
(4) enter second stage heating according to the default heating rate of 250 DEG C/h after first stage heating, reach the
When two heating predetermined temperatures, kept the temperature.Second heating predetermined temperature is 250 DEG C, keeps the temperature 10min.
(5) enter phase III heating according to default heating rate after second stage heating, when in-furnace temperature reaches
Terminate to heat up at 380 DEG C, soaking time 120min.
(6) after keeping the temperature, heating schedule in furnace is closed, keeps accelerating to move back to drying compressed air is filled in annealing furnace
Stove inner iron core is cooling.
(7) enter first stage cooling after phase III heating, when temperature is reduced to the first cooling predetermined temperature,
Stop applying longitudinal magnetic field, close field ionization source, is simultaneously stopped to filling drying compressed air in furnace.First cooling predetermined temperature be
200℃。
(8) when in-furnace temperature is down to the second cooling predetermined temperature, open annealing fire door, iron core by being sent out in annealing furnace,
Complete entire annealing process.Second cooling predetermined temperature is 100 DEG C.
Annealing temperature changes over time as shown in Fig. 2, overall stepped rising, conducive to inside and outside amorphous core it is heated
It is even.
The total losses performance of the amorphous core prepared by this method improves 5%, and power-performance improves 10%.
Although should be pointed out that invention has been described by above embodiment, the present invention can also have other
Numerous embodiments.Without departing from the spirit and scope of the present invention, those skilled in the art obviously can be right
The present invention makes various corresponding changes and modifications, but these change and modification all should belong to appended claims of the present invention and
In the range of its equivalent is protected.
Claims (10)
1. a kind of method for annealing of the amorphous core of refusion and smelting, it is characterised in that: the following steps are included:
It will be sent into annealing furnace using the amorphous core of refusion and smelting amorphous band production, start annealing furnace temperature program, preset
Heating rate heats up into the first stage, when reaching the first heating predetermined temperature, is kept the temperature and starts to apply magnetic field；
Enter second stage heating according to default heating rate after first stage heating, reaches the second heating predetermined temperature
When, it is kept the temperature；
Enter phase III heating according to default heating rate after second stage heating, in-furnace temperature reaches 375 DEG C~385
DEG C when terminate to heat up, and keep the temperature 115 min ~ 125min；
Phase III enters first stage cooling after heating up, and when temperature is reduced to the first cooling predetermined temperature, stops applying
Add magnetic field；
When in-furnace temperature is down to the second cooling predetermined temperature, annealing fire door is opened, iron core is completed entire by sending out in annealing furnace
Annealing process.
2. the method for annealing of the amorphous core of refusion and smelting according to claim 1, it is characterised in that: enter in amorphous core
Before annealing furnace, it is filled with drying compressed air into annealing furnace, water content in annealing furnace is made to be lower than 5%.
3. the method for annealing of the amorphous core of refusion and smelting according to claim 1, it is characterised in that: phase III heating knot
Shu Hou closes in furnace heating schedule and persistently to being filled with drying compressed air in annealing furnace；After first stage cools down, stop
To filling drying compressed air in furnace.
4. the method for annealing of the amorphous core of refusion and smelting according to claim 1, it is characterised in that: the default heating speed
Rate is 250 DEG C/h, and the first heating predetermined temperature is 145 DEG C~155 DEG C, keeps the temperature 5 min~15min, and the magnetic field is longitudinal flux
?.
5. the method for annealing of the amorphous core of refusion and smelting according to claim 4, it is characterised in that: the first heating is pre-
Determining temperature is 150 DEG C, keeps the temperature 10 min.
6. the method for annealing of the amorphous core of refusion and smelting according to claim 1, it is characterised in that: second heating is pre-
Determining temperature is 245 DEG C ~ 255 DEG C, keeps the temperature 5 min~15min.
7. the method for annealing of the amorphous core of refusion and smelting according to claim 6, it is characterised in that: second heating is pre-
Determining temperature is 250 DEG C, 10min.
8. the method for annealing of the amorphous core of refusion and smelting according to claim 1, it is characterised in that: first cooling is pre-
Determining temperature is 195 DEG C ~ 205 DEG C, and the second cooling predetermined temperature is 95 DEG C ~ 105 DEG C.
9. the method for annealing of the amorphous core of refusion and smelting according to claim 9, it is characterised in that: first cooling is pre-
Determining temperature is 200 DEG C, and the second cooling predetermined temperature is 100 DEG C.
10. a kind of amorphous core of refusion and smelting, it is characterised in that: be made using any one of claim 1 to 9 method.
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| CN201910609529.6A CN110373522A (en) | 2019-07-08 | 2019-07-08 | A kind of amorphous core and its method for annealing of refusion and smelting |
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| CN201910609529.6A CN110373522A (en) | 2019-07-08 | 2019-07-08 | A kind of amorphous core and its method for annealing of refusion and smelting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111057820A (en) * | 2019-11-29 | 2020-04-24 | 钢铁研究总院 | Efficient annealing method for improving comprehensive performance of iron-based amorphous alloy iron core |
| CN111560570A (en) * | 2020-06-09 | 2020-08-21 | 江苏振栋精密材料科技有限公司 | Amorphous strip preparation process |
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| CN109207680A (en) * | 2018-11-14 | 2019-01-15 | 上海置信电气非晶有限公司 | A kind of amorphous alloy core method for annealing, production method and annealing system |
| CN109666855A (en) * | 2018-12-10 | 2019-04-23 | 国网上海市电力公司 | Recycle the process of amorphous transformer core refusion and smelting |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5179776A (en) * | 1991-03-26 | 1993-01-19 | Cooper Power Systems, Inc. | Method of restraining an amorphous metal core |
| CN101575664A (en) * | 2009-04-24 | 2009-11-11 | 同济大学 | Process for heat treatment of amorphous transformer core |
| CN102337384A (en) * | 2011-09-15 | 2012-02-01 | 上海日港置信非晶体金属有限公司 | Destressing method and device for amorphous alloy transformer iron core |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111057820A (en) * | 2019-11-29 | 2020-04-24 | 钢铁研究总院 | Efficient annealing method for improving comprehensive performance of iron-based amorphous alloy iron core |
| CN111057820B (en) * | 2019-11-29 | 2021-01-01 | 钢铁研究总院 | Efficient annealing method for improving comprehensive performance of iron-based amorphous alloy iron core |
| CN111560570A (en) * | 2020-06-09 | 2020-08-21 | 江苏振栋精密材料科技有限公司 | Amorphous strip preparation process |
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Application publication date: 20191025 |