CN107475496A - The heat treatment method of iron-based amorphous core material - Google Patents

The heat treatment method of iron-based amorphous core material Download PDF

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Publication number
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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iron
core material
based amorphous
amorphous core
heat treatment
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唐书辉
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Guizhou Xin Mei Nanosecond Science And Technology Co Ltd
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Guizhou Xin Mei Nanosecond Science And Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/04General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

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  • 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)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

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

The heat treatment method of iron-based amorphous core material
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)

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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

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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

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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
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