CN106653277B - Height leads Fe-Si-Al magnetic core and preparation method thereof - Google Patents
Height leads Fe-Si-Al magnetic core and preparation method thereof Download PDFInfo
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- CN106653277B CN106653277B CN201611247576.3A CN201611247576A CN106653277B CN 106653277 B CN106653277 B CN 106653277B CN 201611247576 A CN201611247576 A CN 201611247576A CN 106653277 B CN106653277 B CN 106653277B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
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- 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)
-
- 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
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F2003/106—Magnetic circuits using combinations of different magnetic materials
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Soft Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of height to lead Fe-Si-Al magnetic core and preparation method thereof, is using sendust powder particle as raw material, it includes following methods step：1）Sendust powder particle dehumidifying cladding processing 2）Soft magnetic metal tape wrapping magnetic core material heat treatment 3）Fe-Si-Al magnetic core crude product 4 processed）Fe-Si-Al magnetic core processed handles product 5）Fe-Si-Al magnetic core product processed.The present invention prepares magnetic core, compared with magnetic core prepared by existing method, reduces the transition loss of high current, improves transition impedance, play a part of high current moment break-make soft landing, protect electrical equipment, improve electrical source power factor.
Description
Technical field：
The present invention relates to a kind of Fe-Si-Al magnetic core and preparation method, more particularly to a kind of height lead Fe-Si-Al magnetic core and
Its preparation method.
Background technology：
Powder core is one of its main first accessory in power supply electrical switchgear, and it largely decides switch
The quality of power supply and it is energy-saving the effect of.Fe-Si-Al magnetic core bigoted ability of direct current under high current is poor at present, it is impossible to full
The existing technical standard requirement of foot, and the electronic component prepared is produced with this powder core, it is difficult to the quality for reaching high standard
Technical requirements.On the other hand, the existing method for preparing Fe-Si-Al magnetic core, usually using crush method etc., its electronics device prepared
The bigoted ability of part direct current is poor, and loss is higher, and manufacturing process is complicated, and quality is unstable.
Switching Power Supply is the electrical equipment being be unable to do without in present life.Such as material engineering, the Switching Power Supply of person in electronics
With PFC Active PFCs, magnetic device etc..Printed from home-use lamp decoration, air-conditioning, TV, computer power etc. to office
Duplicator etc..With domestic outer energy growing tension, problem of environmental pollution getting worse, energy-saving to electrical equipment wants
More and more higher is sought, also the just requirement more and more higher to its power supply service efficiency.
Two class subject matters in existing Switching Power Supply be present：First, efficiency can not be balanced during different loads；Electricity consumption is set
It is standby will not 24 hours all in rated power oepration at full load, there is part-time to be in holding state.And meeting during active PFC design
Major design is done for more than 50% load, the efficiency of power supply is low when causing underloading.Load impedance during how adjusting underloading,
PFC is acted on when weight carries can effectively play a role, and improve efficiency.Second, active PFC under discontinuous operating mode or
There is the high current of alternation on person's inductive load, can all cause switching device easily to sustain damage, switching loss increases, idle power consumption
Increase, reduce the efficiency of complete machine.How come the device that proposes, transition induction reactance can be effectively improved, transient current is reduced, plays soft open
The effect of pass.So as to effectively reduce switching loss, efficiency is improved.
Therefore, a kind of equipment of the Switching Power Supply in Switching Power Supply in the presence of two class subject matters, i.e. iron silicon to be provided how
Aluminium powder core, it is to need to face in present reality and solve the problems, such as.Switching loss can be effectively reduced, efficiency is improved, carries simultaneously
The bigoted ability of its high direct current, realizes environmental protection and energy saving effect.
The content of the invention：
The present invention is to provide a kind of height and leads Fe-Si-Al magnetic core and preparation method thereof, and it is by sendust powder particle
It is mixed with metal wound core band, the iron sial of preparation, magnetic core can effectively improve transition induction reactance, reduce transient current,
Play a part of Sofe Switch.So as to effectively reduce switching loss, efficiency is improved.
The present invention provides a kind of height and leads Fe-Si-Al magnetic core, and it is made up of following mass component:Sendust powder
Particle 80-99%, surplus are soft magnetic metal tape wrapping magnetic core material；It is -100 to control the sendust powder particle size
To -500 mesh, the soft magnetic metal tape wrapping magnetic core material is the metal tape of thickness 15-500 microns.
A kind of height of the present invention leads Fe-Si-Al magnetic core, and preferably described sendust powder particle shape is spherical
Shape or sheet；The soft magnetic metal band be Fe-based amorphous, cobalt base amorphous, iron based nano crystal, iron silicon, iron nickel strap material one kind or
It is several.The present invention another object is that a kind of high preparation method for leading Fe-Si-Al magnetic core, be using sendust powder particle as
Raw material, it includes following methods step：
1) sendust powder particle dehumidifying cladding processing, first granular size is closed for the iron sial of -100 to -500 mesh
Golden powder particle carries out dehumidification treatments with dehumidizer, and then with insulating wrapped agent mixed processing, it is 15- to control mixed processing temperature
130 DEG C, the mixed processing time is 5-80 minutes, to handle sendust powder particle；
2) soft magnetic metal tape wrapping magnetic core material be heat-treated, by thickness be 15-500 microns metal tape, be placed in sodium metasilicate or
Soaked in potassium silicate solution, then at a temperature of 50 DEG C -200 DEG C, heat preservation solidification processing, cooling, are heat-treated metal soft magnetic strip
Wound core material；
3) Fe-Si-Al magnetic core crude product processed, 1) step is handled into sendust powder particle and 2) step heat-treated metal soft magnetism
Tape wrapping magnetic core material is mixed into mixture, and it is 80-99% to control and nanometer crystal alloy powder particle mass ratio is handled in mixture, remaining
Measure as heat-treated metal soft magnetic strip wound core material, mixture is placed in required shape, size mould, be press-formed, be
Fe-Si-Al magnetic core crude product, the pressure for controlling extrusion forming are 10-30T/cm2, it is the 1-30 seconds to control pressing time；
4) Fe-Si-Al magnetic core processing product processed, upper step Fe-Si-Al magnetic core crude product is placed in annealing device, Yu Zhen
Pre-processed under the conditions of empty or inert gas shielding, it is 100 DEG C -300 DEG C to control pretreatment temperature, pressure 0.1Pa-
0.001Pa, pretreatment time are 10-80 minutes；Product is handled for Fe-Si-Al magnetic core；
5) Fe-Si-Al magnetic core product processed, product is handled by Fe-Si-Al magnetic core, and high temperature burning is carried out in annealing device
Knot processing, high temperature sintering environment is controlled to be carried out under inert gas or vacuum state, it is 300 DEG C -450 to control high temperature sintering temperature
DEG C, sintering time is 10-80 minutes, and constant temperature remains no greater than 120 minutes at a temperature of this, cooling, last chamfering coating, is
Height leads Fe-Si-Al magnetic core product.
Preparation method of the present invention, it is preferred that be 1) insulating wrapped agent described in step be following quality than component silicic acid
Sodium 5-8, potassium silicate 30, tetraethyl orthosilicate 20-22, zinc stearate 10-12 silicone resins 10-12, mica 5-8, kaolin 20-22
Mixing composition.
Preparation method of the present invention, it is preferred that be 1) step through the sendust powder particle through dehumidification treatments with
Insulating wrapped agent mixes, and controls the 0.5-8Wt% that the insulating wrapped agent addition is nanometer crystal alloy powder particle quality.
Preparation method of the present invention, it is preferred that be that 1) dehumidizer described in step is that mass concentration is 1-2Wt% inorganic acids
And/or the mixed liquor of 1-2Wt% silicate solutions；The silicate is sodium metasilicate and/or potassium silicate.
Inorganic acid of the present invention is phosphoric acid or sulfuric acid or hydrochloric acid, also or phosphoric acid and sulfuric acid, the mixing of phosphoric acid and hydrochloric acid.
Described preparation method, further, it is 2) single metal soft magnetic strip wound core material heat treatment, controls the silicic acid
The mass concentration of sodium or potassium silicate solution is 1-20Wt%, and control immersion 2-20 minutes, control maintains heat preservation solidification processing time
10-80 minutes.
Preparation method of the present invention, it is preferred that be that 5) high temperature sintering described in step is staged heating in three times, liter
Temperature, Isothermal sinter processing, first stage heating 10-20min, 300-350 DEG C is warming up to, constant temperature insulation 10-20min；Second-order
Duan Jiare 10-20min, 350-400 DEG C is warming up to, constant temperature insulation 10-20min；Phase III heats 10-20min, is warming up to
400-450 DEG C, constant temperature insulation 20-40min；Finally, stove is cooled to room height and leads sendust core product.
It is of the present invention to be cooled to natural in air or air-cooled cooling.
The present invention uses above-mentioned steps method, and the height of preparation leads the application of Fe-Si-Al magnetic core, and it is load that can adjust underloading
Impedance, PFC is acted on when weight carries can effectively play a role, and improve efficiency.The bigoted ability of direct current is higher under high current,
Existing technical standard requirement can be met；Second, there is alternation on active PFC or inductive load under discontinuous operating mode
High current, can all switching device be caused easily to sustain damage, switching loss increases, idle power consumption increase, reduces the efficiency of complete machine.
Device proposed by the present invention, transition induction reactance can be effectively improved, reduce transient current, play a part of Sofe Switch.Effectively reduce and open
Loss is closed, improves efficiency.Compared with magnetic core prepared by existing method, the transition loss of high current is reduced, improves transition impedance,
Play a part of high current moment break-make soft landing, protect electrical equipment, improve electrical source power factor.
Embodiment：
With reference to embodiment, the present invention is further described.
A kind of height of the present invention leads Fe-Si-Al magnetic core, is and the soft magnetic metal band using sendust powder particle as raw material
Material is mixed, and its preparation method step is as follows：
1) sendust powder particle dehumidifying cladding processing, first granular size is closed for the iron sial of -100 to -500 mesh
Golden powder particle carries out dehumidification treatments with dehumidizer, and then with insulating wrapped agent mixed processing, it is 15- to control mixed processing temperature
130 DEG C, the mixed processing time is 5-80 minutes, to handle sendust powder particle；
2) soft magnetic metal tape wrapping magnetic core material be heat-treated, by thickness be 15-500 microns metal tape, be placed in sodium metasilicate or
Soaked in potassium silicate solution, then at a temperature of 50 DEG C -200 DEG C, heat preservation solidification processing, cooling, are heat-treated metal soft magnetic strip
Wound core material；
3) Fe-Si-Al magnetic core crude product processed, 1) step is handled into sendust powder particle and 2) step heat-treated metal soft magnetism
Tape wrapping magnetic core material is mixed into mixture, and it is 80-99% to control and sendust powder particle mass ratio is handled in mixture, remaining
Measure as heat-treated metal soft magnetic strip wound core material, mixture is placed in required shape, size mould, be press-formed, be
Fe-Si-Al magnetic core crude product, it is 10-30T/cm to control briquetting pressure2, it is the 1-30 seconds to control pressing time；
4) Fe-Si-Al magnetic core processing product processed, upper step Fe-Si-Al magnetic core crude product is placed in annealing device, Yu Zhen
Pre-processed under the conditions of empty or inert gas shielding, it is 100 DEG C -300 DEG C to control pretreatment temperature, pressure 0.1Pa-
0.001Pa, pretreatment time are 10-80 minutes；Product is handled for Fe-Si-Al magnetic core；
5) Fe-Si-Al magnetic core product processed, Fe-Si-Al magnetic core processing product is subjected to high temperature sintering in annealing device
Processing, high temperature sintering environment is controlled to be carried out under inert gas or vacuum state, it is 300 DEG C -450 to control high temperature sintering temperature
DEG C, sintering time is 10-80 minutes, and constant temperature remains no greater than 120 minutes at a temperature of this, cooling, last chamfering coating, is
Fe-Si-Al magnetic core product.
Preparation method of the present invention, it is preferred that be 1) insulating wrapped agent described in step be following quality than component silicic acid
Sodium 5-8, potassium silicate 30, tetraethyl orthosilicate 20-22, zinc stearate 10-12 silicone resins 10-12, mica 5-8, kaolin 20-22
Mixing composition.
Further concrete operations are 1) by the sendust powder of -100 to -500 mesh, first dehumidification treatments, Ran Houjia
Enter to account for sendust powder quality than being sufficiently mixed for 0.5% to 8% insulating wrapped agent, the insulating wrapped agent is such as
Lower quality is than component sodium metasilicate 5-8, potassium silicate 30, tetraethyl orthosilicate 20-22, zinc stearate 10-12 silicone resins 10-12, cloud
Female 5-8, kaolin 20-22 mixing composition.The insulating wrapped agent can be between each component described above proportioning, can also be by
The scheme of prior art is configured, and for temperature control at 15-130 DEG C, incorporation time is 5 to 80 minutes during mixing；
2) by the metal tape that thickness is 15-500 microns, Fe-based amorphous, cobalt-based is non-into being grouped into for the strip material
Crystalline substance, iron based nano crystal, iron silicon, one or more of bands of iron nickel strap material；Be placed on dilution 50 times to 5 times i.e. mass concentration ratio be 1-
2-20 minutes are soaked in 20Wt% sodium metasilicate or potassium silicate, then maintain enter within 10 to 80 minutes at a temperature of 50 DEG C to 200 DEG C
Row curing process, cooling；
3) it is in proportion 80% to 99% treated sendust powder and processing gold that ratio is 20% to 1%
It is metal tape to belong to soft magnetic strip wound core material, in the design mould for the shape and size size for being put into needs, is press-formed,
Stress control is in 10-30T/cm2, 10-30 tons every square centimeter are represented, to after authorized pressure, maintains the 1-30 seconds to be molded, is iron silicon
Aluminium powder core crude product；
4) be molded after Fe-Si-Al magnetic core crude product product vacuum heat treatment furnace vacuum pressure be 0.1Pa-0.001Pa or
Pre-processed under person's inert gas conditions, treatment temperature is 100 DEG C -300 DEG C, and the time is 10-80 minutes, is Fe-Si-Al magnetic
Core handles product；
5) product processed, the Fe-Si-Al magnetic core of upper step is handled into product, then in the case where vacuum pressure is 0.1Pa-0.001Pa or
Inert gas described in the inert gas that person's flow is 3 liters/min is progress high temperature sintering processing in nitrogen or argon gas condition, described
High temperature sintering processing is staged heating, heating, Isothermal sinter processing in three times, first stage heating 10-20min, is heated up
To 300-350 DEG C, constant temperature is incubated 10-20min；Second stage heats 10-20min, is warming up to 350-400 DEG C, constant temperature insulation
10-20min；Phase III heats 10-20min, is warming up to 400-450 DEG C, constant temperature insulation 20-40min；Finally, stove is cooled to
Room temperature, through chamfering, surface coating is that height leads Fe-Si-Al magnetic core product.
Embodiment 1
1) by the sendust powder that -150 mesh weight are 23.5 grams, it is put into the mixing of the sodium silicate solution of 1% phosphoric acid+1%
Soak in liquid 10 minutes, then toasted 20 minutes at a temperature of 100 DEG C；2) it is 25 microns of Fe-based amorphous (state by thickness
Mark 1k101) metal wound core (size OD23mm*ID20mm*HT6.5mm), carried out with the sodium metasilicate that mass concentration is 3%
Soak within 5 minutes, then toasted 50 minutes with 200 DEG C.3) the sendust powder after weight 12g processing is put into
OD26.9mm*ID14.7mm*HT11.2mm is in die cavity；4) the metal wound core for preparing the second step of the present embodiment is i.e.
Metal tape, it is put into die cavity；5) and then again remaining 11.5 grams of sendust powder are put into wherein.6) pressure reaches 21T/
During cm2, kept for 10 seconds, move back mold forming.7) by the powder core of extrusion forming under conditions of vacuum 0.08Pa, heating 200
DEG C insulation 50 minutes pre-process.8) under same vacuum condition, temperature is raised to 420 DEG C of constant temperature 60 minutes, furnace cooling takes
Go out, be cooled to room temperature, take out chamfering, face coat, complete to be that height is made to lead Fe-Si-Al magnetic core product.
Embodiment 2
Remaining is identical with embodiment 1 and described above part in addition to the description below for this implementation specific embodiment；
1) by the sendust powder that -250 mesh weight are 40 grams, 0.8g tetraethyl orthosilicates and 0.8g zinc stearates are put into
In the solution of composition, soak and be warmed to 80 DEG C, maintenance 20 minutes；2) by the iron-nickel alloy band that thickness is 50 microns, model
For national standard 1j79, wound core, its size is OD30mm*ID24mm*HT10mm, with the sodium metasilicate that mass concentration is 1% or so
Soak within 5 minutes, then toasted 30 minutes with 300 DEG C.3) the sendust powder after weight 20g processing is put into
OD40mm*ID15mm*HT14mm is in die cavity；4) the metal wound core that the present embodiment second step prepares is put into die cavity
In.5) and then again remaining 20 grams of nanometer crystal alloy powder are put into wherein；6) pressure reaches 18T/cm2When keep 15 seconds,
Move back mold forming.7) it is sintered in the condition of nitrogen gas that flow is 5 liters/min, treatment temperature is 410 DEG C, and soaking time is
90 minutes；The product of the task of completion is subjected to chamfering, surface coating.Height is made and leads Fe-Si-Al magnetic core product.The present embodiment
Sintering processes can use staged heating, heating, Isothermal sinter processing in three times, and the height prepared leads Fe-Si-Al magnetic core production
Quality is more preferably.
Height prepared by the invention described above method is led into Fe-Si-Al magnetic core product and my existing similar Fe-Si-Al magnetic below
The performance test explanation of core product.
Following table is the like product performance comparision that powder core product prepared by the embodiment of the present invention 1,2 is prepared with prior art
Table 1.
Explanation：Detecting instrument device used in the present invention is that magnetic conductivity test instrumentation is Japanese day to put 3532 electric bridges.Magnetic field carries
For for Changzhou Tong Hui TH1775 bias current sources.It is measured data in the above-mentioned table 1 of the present invention.Find out from upper table 1, the magnetic core after improvement exists
Before 0.2 oersted (Oe), significantly larger than existing amorphous core.The initial magnetic conductance of band body magnetic core is essentially when 0.2 (Oe)
Rate.With the good gold medal 80plus of boat 500w pc power supply tests, at Several Typical Load (50% load), existing Fe-Si-Al magnetic core is surveyed
It is 84.5% to try efficiency, and the test of Example 1 and Example 2 of the present invention magnetic core is lifted to 85.8% and 86% respectively.It is possible thereby to
Power-efficient can be effectively improved by finding out the magnetic core of technical solution of the present invention, and efficiency has certain pass with addition magnetic permeability height
Connection.
Claims (7)
1. a kind of high preparation method for leading Fe-Si-Al magnetic core, using sendust powder particle as raw material, it is characterized in that including
Following methods step：
1）Sendust powder particle dehumidifying cladding is handled, first the sendust powder by granular size for -100 to -500 mesh
Last particle carries out dehumidification treatments with dehumidizer, and then with insulating wrapped agent mixed processing, it is 15-130 to control mixed processing temperature
DEG C, the mixed processing time is 5-80 minutes, to handle sendust powder particle；
2）Soft magnetic metal tape wrapping magnetic core material is heat-treated, and thickness is coiled into iron core for the metal coil tape of 15-500 microns, is placed in silicon
Soaked in sour sodium or potassium silicate solution, then at a temperature of 50 DEG C -200 DEG C, heat preservation solidification processing, cooling, is heat-treated metal
Soft magnetic strip wound core material；
3）Fe-Si-Al magnetic core crude product processed, by 1）Step processing sendust powder particle and 2）Walk heat-treated metal soft magnetic strip volume
Mixture is mixed into around magnetic core material, it is 80-99% to control and sendust powder particle mass ratio is handled in mixture, and surplus is
Heat-treated metal soft magnetic strip wound core material, mixture is placed in required shape, size mould, and extrusion forming, is iron silicon
Aluminium powder core crude product, the pressure for controlling extrusion forming are 10-30T/cm2, it is the 1-30 seconds to control pressing time；
4）Fe-Si-Al magnetic core processed handles product, upper step sendust core crude product is placed in annealing device, in vacuum or lazy
Property gas shield under the conditions of pre-processed, control pretreatment temperature be 100 DEG C -300 DEG C, pressure 0.1Pa-0.001Pa,
Pretreatment time is 10-80 minutes；Product is handled for sendust core；
5）Fe-Si-Al magnetic core product processed, sendust core processing product is subjected to high temperature sintering processing in annealing device,
High temperature sintering environment is controlled to be carried out under inert gas or vacuum state, it is 300 DEG C -450 DEG C to control high temperature sintering temperature, sintering
Time is 10-80 minutes, and constant temperature remains no greater than 120 minutes at a temperature of this, and cooling, last chamfering coating, as height leads iron
Si-Al magnetic core product.
A kind of 2. high preparation method for leading Fe-Si-Al magnetic core according to claim 1, it is characterized in that 1）Walk the insulating bag
Cover agent for following quality than component sodium metasilicate 5-8, potassium silicate 30, tetraethyl orthosilicate 20-22, zinc stearate 10-12 silicone resins
10-12, mica 5-8, kaolin 20-22 mixing compositions.
A kind of 3. high preparation method for leading Fe-Si-Al magnetic core according to claim 1, it is characterized in that 1）Step is through dehumidification treatments
Sendust powder particle mixed with insulating wrapped agent, it is sendust powder to control the insulating wrapped agent addition
The 0.5-8Wt% of granular mass.
A kind of 4. high preparation method for leading Fe-Si-Al magnetic core according to claim 1, it is characterized in that 1）Walk the dehumidizer
For the mixed liquor that mass concentration is 1-2Wt% inorganic acids and/or 1-2 Wt% silicate solutions；The silicate is sodium metasilicate
And/or potassium silicate.
A kind of 5. high preparation method for leading Fe-Si-Al magnetic core according to claim 1, it is characterized in that 2）Single metal soft magnetic strip
Wound core material is heat-treated, and the mass concentration for controlling the sodium metasilicate or potassium silicate solution is 1-20Wt%, 2-20 points of control immersion
Clock, control maintain heat preservation solidification processing time 10-80 minutes.
A kind of 6. high preparation method for leading Fe-Si-Al magnetic core according to claim 1, it is characterized in that 5）The high temperature is walked to burn
Knot is staged heating, heating, Isothermal sinter processing in three times, first stage heating 10-20min, is warming up to 300-350
DEG C, constant temperature insulation 10-20min；Second stage heats 10-20min, is warming up to 350-400 DEG C, constant temperature insulation 10-20min；The
Three stepwise heating 10-20min, 400-450 DEG C is warming up to, constant temperature insulation 20-40min；Finally, stove is cooled to room temperature and led for height
Sendust core product.
A kind of 7. high preparation method for leading Fe-Si-Al magnetic core according to claim 1, it is characterized in that 2）、5）Walk the cooling
For natural in air or air-cooled cooling.
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| CN110788328A (en) * | 2019-11-08 | 2020-02-14 | 上海置信电气非晶有限公司 | Heat treatment method for preparing amorphous magnetic powder core by utilizing recycled amorphous material |
| CN112185640B (en) * | 2020-09-23 | 2023-01-24 | 江西艾特磁材有限公司 | Method for coating magnetic powder core with sodium silicate |
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| JP2002003905A (en) * | 2000-04-22 | 2002-01-09 | Robert Bosch Gmbh | Sintered soft magnetic material and its production method |
| CN1812009A (en) * | 2006-03-01 | 2006-08-02 | 北京七星飞行电子有限公司 | FeSiAl material magnetic core and producing method thereof |
| CN101886216A (en) * | 2010-06-24 | 2010-11-17 | 湖州微控电子有限公司 | Preparation method of Fe-6.5% Si alloy magnetic powder core with small amount of P |
| CN104668556A (en) * | 2014-11-26 | 2015-06-03 | 邹和平 | Preparation method for high-performance Fe-Si soft magnetic powder core |
| CN106229104A (en) * | 2016-08-31 | 2016-12-14 | 北京康普锡威科技有限公司 | A kind of soft magnetic composite powder and preparation process for magnetic powder core thereof |
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