CN107475496A - The heat treatment method of iron-based amorphous core material - Google Patents
The heat treatment method of iron-based amorphous core material Download PDFInfo
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- CN107475496A CN107475496A CN201710703120.1A CN201710703120A CN107475496A CN 107475496 A CN107475496 A CN 107475496A CN 201710703120 A CN201710703120 A CN 201710703120A CN 107475496 A CN107475496 A CN 107475496A
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- core material
- based amorphous
- amorphous core
- heat treatment
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- 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
- C21D6/00—Heat treatment of ferrous alloys
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- 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
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Abstract
This programme discloses a kind of heat treatment method of iron-based amorphous core material of nano amorphous alloy preparing technical field, comprises the following steps：One：Iron-based amorphous core material is put into vacuum chamber, iron-based amorphous core material is heat-treated；Two：The iron-based amorphous core material being put into vacuum chamber is uniformly heated from normal temperature and reaches 290 ~ 310 DEG C, and keeps 50 ~ 70min of constant temperature；Three：After completing two, continue to be heated to 400 ~ 420 DEG C to iron-based amorphous core material, and keep 60 ~ 70min of constant temperature；Four：After completing three, continue to be heated to 470 ~ 490 DEG C to iron-based amorphous core material, and keep 75 ~ 85min of constant temperature；Five：After completing four, continue to be heated to 520 ~ 540 DEG C to iron-based amorphous core material, and keep 30 ~ 40min of constant temperature；Six：After completing five, continue to be heated to 550 ~ 560 DEG C to iron-based amorphous core material, and keep 110 ~ 130min of constant temperature；Seven：After completing six, iron-based amorphous core material is cooled to normal temperature.This method can significantly reduce the magnetic hystersis loss of iron-based amorphous magnetic core.
Description
Technical field
The invention belongs to nano amorphous alloy preparing technical field, more particularly to a kind of iron-based amorphous core material
Heat treatment method.
Background technology
Amorphous nanocrystalline soft magnetic material, it is that amorphous crystallization after heat treatment obtains crystallite of the crystal grain diameter in 10 ~ 20nm,
Hence obtain one's name.This kind of alloy almost combines the excellent properties of all non-crystaline amorphous metals：High saturation magnetic flux density, high initial magnetic conductance
Rate, low specific loss and good temperature stability.
Iron-based amorphous magnetic core is a kind of magnetic material of function admirable, and it is mainly used in power system, computer network
The fields such as network, multimedia technology and high frequency micro-magnetic device.Magnetic hystersis loss in magnetic material be present, its producing cause is ferromagnet
Deng the energy consumed during remagnetization by hysteresis.When magnetic hysteresis refers to the magnetic state change of ferromagnetic material, magnetization
Intensity lags behind magnetic field intensity, and hysteresis curve relation is presented between its magnetic flux density B and magnetic field intensity H.Through one cycle, often
Magnetic hystersis loss in unit volume iron core is proportional to the area of hysteresis curve.This portion of energy is converted into heat energy, equipment is heated up,
Efficiency reduces, and it is the part of iron loss in electrical equipment, and this is unfavorable for the normal operation of equipment.
But at present during being produced to iron-based amorphous magnetic core, in order to reduce the loss of element, generally
Material can be entered by the way of being rapidly heated and cooling during being heat-treated to iron-based amorphous core material
Row processing, such processing mode cause obtained magnetic core its crystal grain refinement deficiency, and the magnetic property of magnetic core in itself discharges deficiency, from
And cause the magnetic hystersis loss of iron-based amorphous magnetic core more serious.
The content of the invention
The invention is intended to provide a kind of heat treatment method of iron-based amorphous core material, to reduce iron-based amorphous
The magnetic hystersis loss of magnetic core.
The heat treatment method of iron-based amorphous core material in this programme, comprises the following steps：
Step 1：Iron-based amorphous core material is put into vacuum chamber, hot place is carried out to iron-based amorphous core material
Reason；
Step 2：The iron-based amorphous core material being put into vacuum chamber is uniformly heated into 60 ~ 70min to its temperature from normal temperature
Reach 290 ~ 310 DEG C, and keep 50 ~ 70min of constant temperature；
Step 3：After completing step 2, continue to 25 ~ 35min to 400 ~ 420 DEG C of iron-based amorphous core material heating, and
Keep 60 ~ 70min of constant temperature；
Step 4：After completing step 3, continue to 40 ~ 50min to 470 ~ 490 DEG C of iron-based amorphous core material heating, and
Keep 75 ~ 85min of constant temperature；
Step 5：After completing step 4, continue to 25 ~ 35min to 520 ~ 540 DEG C of iron-based amorphous core material heating, and
Keep 30 ~ 40min of constant temperature；
Step 6：After completing step 5, continue to 20 ~ 30min to 550 ~ 560 DEG C of iron-based amorphous core material heating, and
Keep 110 ~ 130min of constant temperature；
Step 7：After completing step 6, iron-based amorphous core material is cooled to normal temperature.
The working principle and beneficial effect of this programme：This programme is steps by being used to iron-based amorphous core material
Heating mode, reach the best curve of crystallization, iron-based amorphous core material is formed smaller nanostructured, and promote iron
The nano amorphous core material of the base magnetic property of itself obtains maximum release, reduces the magnetic hystersis loss of iron-based amorphous magnetic core.It is logical
Crossing reduces the magnetic hystersis loss of iron-based amorphous magnetic core, and making it, temperature elevation process is slower in the course of the work, is advantageous to
Reduce the loss of energy and keep the normal operation of equipment.
Further, in step 5, iron-based amorphous core material heating-up temperature, which reaches in 530 DEG C of backward vacuum chambers, to be added
Transverse magnetic field to heat treatment process terminates.The heat treatment temperature of iron-based amorphous core material reaches 530 DEG C, horizontal by adding
To magnetic field, help to reverse the magnetic domain of iron-based amorphous core material, iron-based amorphous magnetic core magnetic domain is magnetized and consistent
Orientation, iron loss is reduced, so as to reduce the magnetic hystersis loss of iron-based amorphous magnetic core.
Further, the magnetic induction intensity of the transverse magnetic field is 1900 ~ 2100Gs.Using 1900 ~ 2100Gs transverse magnetic
Field is more beneficial for the torsion of iron-based amorphous core material magnetic domain, helps to reduce the magnetic hysteresis damage of iron-based amorphous magnetic core
Consumption.
Further, in step 7, when being cooled down to iron-based amorphous core material, first the iron-based in vacuum chamber is received
Rice amorphous magnetic core material cools 30 ~ 40min to 300 ~ 350 DEG C；It is removed from vacuum chamber again and is cooled to normal temperature.By
Faster cooling treatment in vacuum chamber, makes its temperature quickly reduce, and avoids causing iron-based due to too high temperature after being moved out
Oxidative phenomena occurs for nano amorphous core material.
Further, in the heat treatment process of iron-based amorphous core material, keep being full of nitrogen or hydrogen in vacuum chamber.
, on the one hand can be very by not chemically reacted full of nitrogen and hydrogen, nitrogen and hydrogen with iron-based amorphous magnetic core
Prevent iron-based amorphous magnetic core from aoxidizing well, on the other hand because gas circulation heat transfer causes each portion of iron-based amorphous magnetic core
Position is uniformly heated, and makes the release of iron-based amorphous magnetic core magnetic property more abundant, being advantageous to, which further reduces iron-based, receives
The magnetic hystersis loss of rice amorphous magnetic core.
Further, the iron-based amorphous core material in step 2 is heated to 300 DEG C, and keeps constant temperature 60min.To iron
The low-temperature prewarming processing that the nano amorphous core material of base is carried out, makes iron-based amorphous magnetic core form nucleus, is then entering row order
Ladder heats, and obtains thinner crystal grain, beneficial to internal stress is eliminated, so as to improve the soft magnetism of iron-based amorphous magnetic core
Energy.
Brief description of the drawings
Fig. 1 is the flow chart of the heat treatment method of iron-based amorphous core material of the embodiment of the present invention；
Fig. 2 is the static hysteresis loop of iron-based amorphous magnetic core and basic magnetic after the thermally treated method of the embodiment of the present invention is handled
Change curve；
Fig. 3 is the fundamental magnetization curve and magnetic conductivity of iron-based amorphous magnetic core after the thermally treated method processing of the embodiment of the present invention
Curve（It is static）；
Fig. 4 is the structural representation of iron-based amorphous magnetic core in the embodiment of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation：
Description of reference numerals in Figure of description：In Fig. 3 A be fundamental magnetization curve, B be permeability curcve；C is iron in Fig. 4
The external diameter of the nano amorphous magnetic core of base, D are the internal diameter of iron-based amorphous magnetic core, and E is the height of iron-based amorphous magnetic core.
Embodiment 1：The heat treatment method of iron-based amorphous core material, comprises the following steps：
Step 1：Iron-based amorphous core material is put into vacuum chamber, hot place is carried out to iron-based amorphous core material
Reason, and it is full of nitrogen in holding vacuum chamber in heat treatment process；
Step 2：The iron-based amorphous core material being put into vacuum chamber is uniformly heated from normal temperature to 70min and reached to its temperature
To 300 DEG C, and keep constant temperature 60min；
Step 3：After completing step 2, continue to heat 30min to 410 DEG C to iron-based amorphous core material, and keep constant temperature
60min；
Step 4：After completing step 3, continue to heat 45min to 480 DEG C to iron-based amorphous core material, and keep constant temperature
80min；
Step 5：After completing step 4, continue to heat 30min to 530 DEG C to iron-based amorphous core material, and keep constant temperature
35min；Iron-based amorphous core material heating-up temperature, which reaches in 530 DEG C of backward vacuum chambers, adds 2000Gs transverse magnetic field extremely
Heat treatment process terminates
Step 6：After completing step 5, continue to heat 25min to 550 DEG C to iron-based amorphous core material, and keep constant temperature
120min；
Step 7：After completing step 6, iron-based amorphous core material is cooled down, first by the iron in vacuum chamber during cooling
The nano amorphous core material of base cools 35min to 300 DEG C；It is removed from vacuum chamber again and is cooled to normal temperature.
Embodiment 2：The heat treatment method of iron-based amorphous core material, comprises the following steps：
Step 1：Iron-based amorphous core material is put into vacuum chamber, hot place is carried out to iron-based amorphous core material
Reason, and it is full of hydrogen in holding vacuum chamber in heat treatment process；
Step 2：The iron-based amorphous core material being put into vacuum chamber is uniformly heated from normal temperature to 60min and reached to its temperature
To 290 DEG C, and keep constant temperature 50min；
Step 3：After completing step 2, continue to heat 25min to 420 DEG C to iron-based amorphous core material, and keep constant temperature
70min；
Step 4：After completing step 3, continue to heat 40min to 470 DEG C to iron-based amorphous core material, and keep constant temperature
85min；
Step 5：After completing step 4, continue to heat 25min to 540 DEG C to iron-based amorphous core material, and keep constant temperature
40min；Iron-based amorphous core material heating-up temperature, which reaches in 530 DEG C of backward vacuum chambers, adds 2100Gs transverse magnetic field extremely
Heat treatment process terminates
Step 6：After completing step 5, continue to heat 30min to 560 DEG C to iron-based amorphous core material, and keep constant temperature
110min；
Step 7：After completing step 6, iron-based amorphous core material is cooled down, first by the iron in vacuum chamber during cooling
The nano amorphous core material of base cools 30min to 320 DEG C；It is removed from vacuum chamber again and is cooled to normal temperature.
Embodiment 3：The heat treatment method of iron-based amorphous core material, comprises the following steps：
Step 1：Iron-based amorphous core material is put into vacuum chamber, hot place is carried out to iron-based amorphous core material
Reason, and it is full of hydrogen in holding vacuum chamber in heat treatment process；
Step 2：The iron-based amorphous core material being put into vacuum chamber is uniformly heated from normal temperature to 65min and reached to its temperature
To 310 DEG C, and keep constant temperature 70min；
Step 3：After completing step 2, continue to heat 35min to 400 DEG C to iron-based amorphous core material, and keep constant temperature
65min；
Step 4：After completing step 3, continue to heat 50min to 490 DEG C to iron-based amorphous core material, and keep constant temperature
75min；
Step 5：After completing step 4, continue to heat 35min to 520 DEG C to iron-based amorphous core material, and keep constant temperature
30min；Iron-based amorphous core material heating-up temperature, which reaches in 530 DEG C of backward vacuum chambers, adds 1900Gs transverse magnetic field extremely
Heat treatment process terminates
Step 6：After completing step 5, continue to heat 20min to 555 DEG C to iron-based amorphous core material, and keep constant temperature
130min；
Step 7：After completing step 6, iron-based amorphous core material is cooled down, first by the iron in vacuum chamber during cooling
The nano amorphous core material of base cools 40min to 350 DEG C；It is removed from vacuum chamber again and is cooled to normal temperature.
Fig. 1 is the flow chart of the heat treatment method of iron-based amorphous core material in embodiment 1, embodiment 2 and implementation
The flow of the heat treatment method of iron-based amorphous core material is the same in example 3, the actual temp being simply related to and time etc.
It is different.
After the heat treatment method processing iron-based amorphous core material in embodiment 1 ~ 3, it is made as shown in Figure 4
Iron-based amorphous magnetic core, the external diameter of iron-based amorphous magnetic core is 32mm, internal diameter 10mm, is highly 10mm.During detection, tool
Body testing conditions are：Hi is 0.08A/M, Hj 0A/M, Hs 20A/M, dB/dt 0.0001T/s, R-T- are 20 DEG C.
It is now that the testing result attachment of obtained iron-based amorphous magnetic core in embodiment 1 is as follows：
When carrying out static hysteresis loop and fundamental magnetization curve detection, curve map is as shown in Fig. 2 testing result is：μ i are
173.2mH/m137.8k；μm it is 221mH/m175.9k；Pu is 1.361J/ ㎡；Bs is 1.05T10500Gs；Br is
0.122T1220Gs；Hc is 0.4205A/M0.0052840e；Br/Bs is 0.1162.
Carry out fundamental magnetization curve and permeability curcve（It is static）When, curve map is as shown in figure 3, testing result is：μ i0 are
219mH/m174.3k；μ i are 173.2mH/m137.8k；μm it is 221mH/m175.9k；H (μm) is 1.52A/m；Bs is
1.05T10500Gs。
It can be seen from curve map and testing result, iron-based amorphous core material passes through the heat treatment of this programme, its
Magnetic hystersis loss substantially reduces.
Above-described is only embodiments of the invention, and the general knowledge such as known concrete structure and characteristic is not made herein in scheme
Excessive description., without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, and these are implemented all without the influence present invention
Effect and practical applicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as embodiment can be used for the content for explaining claim.
Claims (6)
1. the heat treatment method of iron-based amorphous core material, it is characterised in that comprise the following steps：
Step 1：Iron-based amorphous core material is put into vacuum chamber, hot place is carried out to iron-based amorphous core material
Reason；
Step 2：The iron-based amorphous core material being put into vacuum chamber is uniformly heated into 60 ~ 70min to its temperature from normal temperature
Reach 290 ~ 310 DEG C, and keep 50 ~ 70min of constant temperature；
Step 3：After completing step 2, continue to 25 ~ 35min to 400 ~ 420 DEG C of iron-based amorphous core material heating, and
Keep 60 ~ 70min of constant temperature；
Step 4：After completing step 3, continue to 40 ~ 50min to 470 ~ 490 DEG C of iron-based amorphous core material heating, and
Keep 75 ~ 85min of constant temperature；
Step 5：After completing step 4, continue to 25 ~ 35min to 520 ~ 540 DEG C of iron-based amorphous core material heating, and
Keep 30 ~ 40min of constant temperature；
Step 6：After completing step 5, continue to 20 ~ 30min to 550 ~ 560 DEG C of iron-based amorphous core material heating, and
Keep 110 ~ 130min of constant temperature；
Step 7：After completing step 6, iron-based amorphous core material is cooled to normal temperature.
2. the heat treatment method of iron-based amorphous core material according to claim 1, it is characterised in that：Step 5
In, iron-based amorphous core material heating-up temperature, which reaches, adds transverse magnetic field to heat treatment process in 530 DEG C of backward vacuum chambers
Terminate.
3. the heat treatment method of iron-based amorphous core material according to claim 2, it is characterised in that：The transverse direction
The magnetic induction intensity in magnetic field is 1900 ~ 2100Gs.
4. the heat treatment method of the iron-based amorphous core material according to any one of claim 1 ~ 3, it is characterised in that：
In step 7, when being cooled down to iron-based amorphous core material, first by the iron-based amorphous core material in vacuum chamber
30 ~ 40min to 300 ~ 350 DEG C of cooling；It is removed from vacuum chamber again and is cooled to normal temperature.
5. the heat treatment method of iron-based amorphous core material according to claim 4, it is characterised in that：Iron-based nanometer
In the heat treatment process of amorphous magnetic core material, keep being full of nitrogen or hydrogen in vacuum chamber.
6. the heat treatment method of iron-based amorphous core material according to claim 5, it is characterised in that：In step 2
Iron-based amorphous core material heat 300 DEG C, and keep constant temperature 60min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109576464A (en) * | 2019-01-14 | 2019-04-05 | 杭州曼德新材料有限公司 | A kind of linear mutual inductor magnetic core heat treatment method |
| CN109735688A (en) * | 2018-12-24 | 2019-05-10 | 广东工业大学 | A kind of magnetic field heat treatment process improving iron based nano crystal high-gradient magnetism energy |
| CN112017857A (en) * | 2020-08-28 | 2020-12-01 | 青岛秋实晟科技有限公司 | Preparation process of nanocrystalline iron core for medium-high frequency transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824512A (en) * | 2010-05-21 | 2010-09-08 | 上海世路特种金属材料有限公司 | Electromagnet type transverse magnetic field heat treatment equipment and method for preparing permanent magnet iron corepermanent magnet |
| CN102129907A (en) * | 2010-12-30 | 2011-07-20 | 上海世路特种金属材料有限公司 | Nanocrystalline soft magnetic alloy iron core with high initial permeability and low remanence and preparation method thereof |
| CN102363830A (en) * | 2011-10-26 | 2012-02-29 | 青岛云路新能源科技有限公司 | Heat treatment method for ultracrystalline magnetic core |
| CN103117153A (en) * | 2013-03-06 | 2013-05-22 | 安泰科技股份有限公司 | Common mode inductance iron-based nanocrystalline iron core and preparation method of the same |
| CN105719826A (en) * | 2016-01-22 | 2016-06-29 | 东南大学 | Magnetic-field heat treatment method of nanocrystal magnetic core |
| CN106702111A (en) * | 2016-11-10 | 2017-05-24 | 贵州鑫湄纳米科技有限公司 | Heat treatment method of iron-based amorphous material |
-
2017
- 2017-08-16 CN CN201710703120.1A patent/CN107475496A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824512A (en) * | 2010-05-21 | 2010-09-08 | 上海世路特种金属材料有限公司 | Electromagnet type transverse magnetic field heat treatment equipment and method for preparing permanent magnet iron corepermanent magnet |
| CN102129907A (en) * | 2010-12-30 | 2011-07-20 | 上海世路特种金属材料有限公司 | Nanocrystalline soft magnetic alloy iron core with high initial permeability and low remanence and preparation method thereof |
| CN102363830A (en) * | 2011-10-26 | 2012-02-29 | 青岛云路新能源科技有限公司 | Heat treatment method for ultracrystalline magnetic core |
| CN103117153A (en) * | 2013-03-06 | 2013-05-22 | 安泰科技股份有限公司 | Common mode inductance iron-based nanocrystalline iron core and preparation method of the same |
| CN105719826A (en) * | 2016-01-22 | 2016-06-29 | 东南大学 | Magnetic-field heat treatment method of nanocrystal magnetic core |
| CN106702111A (en) * | 2016-11-10 | 2017-05-24 | 贵州鑫湄纳米科技有限公司 | Heat treatment method of iron-based amorphous material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735688A (en) * | 2018-12-24 | 2019-05-10 | 广东工业大学 | A kind of magnetic field heat treatment process improving iron based nano crystal high-gradient magnetism energy |
| CN109576464A (en) * | 2019-01-14 | 2019-04-05 | 杭州曼德新材料有限公司 | A kind of linear mutual inductor magnetic core heat treatment method |
| CN112017857A (en) * | 2020-08-28 | 2020-12-01 | 青岛秋实晟科技有限公司 | Preparation process of nanocrystalline iron core for medium-high frequency transformer |
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