CN108074723A - High magnetic core for transformer of a kind of magnetic conductivity and preparation method thereof - Google Patents
High magnetic core for transformer of a kind of magnetic conductivity and preparation method thereof Download PDFInfo
- Publication number
- CN108074723A CN108074723A CN201611016801.2A CN201611016801A CN108074723A CN 108074723 A CN108074723 A CN 108074723A CN 201611016801 A CN201611016801 A CN 201611016801A CN 108074723 A CN108074723 A CN 108074723A
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- Prior art keywords
- parts
- transformer
- sent
- magnetic core
- magnetic
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/09—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses high magnetic core for transformer of a kind of magnetic conductivity and preparation method thereof, and the magnetic core is mainly made of fused magnesite, boron trifluoride, nickel oxide, carborundum, silver nitrate, sodium metasilicate, rare earth, copper powder and lithium carbonate.Magnetic core good weatherability of the present invention, magnetic energy product are high, magnetic stability, can significantly improve the mechanical performance of ferromagnetic core material, reduce the porosity, and magnetic conductivity is high.
Description
Technical field
The present invention relates to a kind of magnetic core for transformer and preparation method thereof, the particularly a kind of high transformer magnetic of magnetic conductivity
Core and preparation method thereof.
Background technology
Stepped into information epoch, various electronic equipment rapid proliferations, electronic equipment refer to switch power technology for the world today
Target requires more and more high, high efficiency, and high reliability, energy-efficient and miniaturization Switching Power Supply are subject to Electronic Equipment Factory
The special favor of family.In order to adapt to the variation of electronic equipment and remodeling situation with rapid changepl. never-ending changes and improvements, Switching Power Supply is technically
Constantly innovation.
For satisfaction miniaturization, low-loss, energy-efficient requirement, occur a variety of core materials on the market at present, but
Be existing core material weatherability it is bad, magnetic energy product is low, and magnetic conductivity is low, magnetic unstable, magnetic core bad mechanical property, the porosity
It is high.
The content of the invention
It is an object of the present invention to provide high magnetic core for transformer of a kind of magnetic conductivity and preparation method thereof.Magnetic of the present invention
Core good weatherability, magnetic energy product are high, magnetic stability, can significantly improve the mechanical performance of ferromagnetic core material, reduce the porosity, magnetic conductance
Rate is high.
In order to solve the above technical problems, the present invention is realized using following technical scheme：
A kind of high magnetic core for transformer of magnetic conductivity, calculates by weight, mainly by 10-20 parts of fused magnesite, boron trifluoride 10-
20 parts, 3-9 parts of nickel oxide, 1-6 parts of carborundum, 5-15 parts of silver nitrate, 1-8 parts of sodium metasilicate, 0.5-2.5 parts of rare earth, copper powder 5-15
5-15 parts of part and lithium carbonate are made.
The high magnetic core for transformer of foregoing magnetic conductivity, calculates by weight, mainly by 12-18 parts of fused magnesite, trifluoro
Change 12-18 parts of boron, 5-7 parts of nickel oxide, 3-5 parts of carborundum, 7-13 parts of silver nitrate, 3-6 parts of sodium metasilicate, 1-2 parts of rare earth, copper powder 7-
13 parts are made with 7-13 parts of lithium carbonate.
The high magnetic core for transformer of foregoing magnetic conductivity, calculates by weight, mainly by 15 parts of fused magnesite, boron trifluoride
10 parts of 15 parts, 6 parts of nickel oxide, 3 parts of carborundum, 10 parts of silver nitrate, 4 parts of sodium metasilicate, 1.5 parts of rare earth, 10 parts of copper powder and lithium carbonate
It is made.
A kind of production method of the high magnetic core for transformer of foregoing magnetic conductivity, more than raw material are sent into blending tank, 2500-
When 3000 revs/min of stirring mixing 2-3 is small, rotary furnace pre-burning is sent into, when pre-burning 2-3 is small at 350-400 DEG C, is sent into grinding pot,
Fineness is ground to as 60-80 μm；Isopropyl palmitate, the calcium propionate of 0.02-0.1% of 0.1-0.2% is squeezed into, being ground to fineness is
50-70μm；The 3-5 times of water measured, the ammonium fluoroborate of 1-2% are added in, is stirred at 60-70 DEG C 20-30 minutes；Spray drying,
Be pressed into base, be sintered to get.
The production method of the high magnetic core for transformer of foregoing magnetic conductivity, more than raw material are sent into blending tank, and 2800 revs/min are stirred
Mix mixing 2.5 it is small when, be sent into rotary furnace pre-burning, when pre-burning 2.5 is small at 350-400 DEG C, be sent into grinding pot, being ground to fineness is
70μm；0.15% isopropyl palmitate, 0.005% calcium propionate is squeezed into, is ground to fineness as 60 μm；The water of 4 times of amounts of addition,
1.5% ammonium fluoroborate is stirred 25 minutes at 60-70 DEG C；Spray drying, be pressed into base, be sintered to get.
With prior art ratio, magnetic core good weatherability of the present invention, magnetic energy product are high, and magnetic stability can significantly improve ferromagnetic
The mechanical performance of core material reduces the porosity.
It further illustrates the present invention by the following examples, but not as limitation of the present invention.
Specific embodiment：
Embodiment 1.
Formula：Fused magnesite 15kg, boron trifluoride 15kg, nickel oxide 6kg, carborundum 3kg, silver nitrate 10kg, sodium metasilicate 4kg,
Rare earth 1.5kg, copper powder 10kg and lithium carbonate 10kg.
Production method：More than raw material is sent into blending tank, when 2800 revs/min of stirring mixings 2.5 are small, is sent into rotary furnace pre-burning,
When pre-burning 2.5 is small at 350-400 DEG C, grinding pot is sent into, is ground to fineness as 70 μm；Squeeze into 0.15% isopropyl palmitate,
0.005% calcium propionate is ground to fineness as 60 μm；Water, 1.5% ammonium fluoroborate of 4 times of amounts are added in, is stirred at 60-70 DEG C
Mixing 25 minutes；Spray drying, be pressed into base, be sintered to get.
Embodiment 2.
Formula：Fused magnesite 18kg, boron trifluoride 18kg, nickel oxide 7kg, carborundum 5kg, silver nitrate 13kg, sodium metasilicate 6kg,
Rare earth 2kg, copper powder 13kg and lithium carbonate 13kg.
Production method：More than raw material is sent into blending tank, when 3000 revs/min of stirring mixings 3 are small, is sent into rotary furnace pre-burning,
When pre-burning 3 is small at 350-400 DEG C, grinding pot is sent into, is ground to fineness as 60-80 μm；Squeeze into 0.2% isopropyl palmitate,
0.1% calcium propionate is ground to fineness as 70 μm；Water, 2% ammonium fluoroborate of 5 times of amounts are added in, 30 points are stirred at 70 DEG C
Clock；Spray drying, be pressed into base, be sintered to get.
Embodiment 3.
Formula：It is fused magnesite 12kg, boron trifluoride 12kg, nickel oxide 5kg, carborundum 3kg, silver nitrate 7kg, sodium metasilicate 3kg, dilute
Native 1kg, copper powder 7kg and lithium carbonate 7kg.
Production method：More than raw material is sent into blending tank, when 2500 revs/min of stirring mixings 2 are small, is sent into rotary furnace pre-burning,
When pre-burning 2 is small at 350-400 DEG C, grinding pot is sent into, is ground to fineness as 60-80 μm；Squeeze into 0.1% isopropyl palmitate,
0.02% calcium propionate is ground to fineness as 50-70 μm；Water, the ammonium fluoroborate of 1-2% of 3 times of amounts are added in, is stirred at 60-70 DEG C
Mix mixing 20 minutes；Spray drying, be pressed into base, be sintered to get.
Embodiment 4.
Formula：Fused magnesite 20kg, boron trifluoride 20kg, nickel oxide 9kg, carborundum 6kg, silver nitrate 15kg, sodium metasilicate 8kg,
Rare earth 2.5kg, copper powder 15kg and lithium carbonate 15kg.
Production method：More than raw material is sent into blending tank, when 2500 revs/min of stirring mixings 2 are small, is sent into rotary furnace pre-burning,
When pre-burning 2 is small at 350-400 DEG C, grinding pot is sent into, is ground to fineness as 60-80 μm；Squeeze into 0.1% isopropyl palmitate,
0.02% calcium propionate is ground to fineness as 50-70 μm；Water, the ammonium fluoroborate of 1-2% of 3 times of amounts are added in, is stirred at 60-70 DEG C
Mix mixing 20 minutes；Spray drying, be pressed into base, be sintered to get.
Embodiment 5.
Formula：It is fused magnesite 10kg, boron trifluoride 10kg, nickel oxide 3kg, carborundum 1kg, silver nitrate 5kg, sodium metasilicate 1kg, dilute
Native 0.5kg, copper powder 5kg and lithium carbonate 5kg.
Production method：More than raw material is sent into blending tank, when 2500 revs/min of stirring mixings 2 are small, is sent into rotary furnace pre-burning,
When pre-burning 2 is small at 350-400 DEG C, grinding pot is sent into, is ground to fineness as 60-80 μm；Squeeze into 0.1% isopropyl palmitate,
0.02% calcium propionate is ground to fineness as 50-70 μm；Water, the ammonium fluoroborate of 1-2% of 3 times of amounts are added in, is stirred at 60-70 DEG C
Mix mixing 20 minutes；Spray drying, be pressed into base, be sintered to get.
Claims (5)
1. a kind of high magnetic core for transformer of magnetic conductivity, it is characterised in that：It calculates by weight, mainly by fused magnesite 10-20
Part, 10-20 parts of boron trifluoride, 3-9 parts of nickel oxide, 1-6 parts of carborundum, 5-15 parts of silver nitrate, 1-8 parts of sodium metasilicate, rare earth 0.5-
5-15 parts of 2.5 parts, 5-15 parts of copper powder and lithium carbonate are made.
2. the high magnetic core for transformer of magnetic conductivity as described in claim 1, it is characterised in that：Calculate by weight, mainly by
12-18 parts of fused magnesite, 12-18 parts of boron trifluoride, 5-7 parts of nickel oxide, 3-5 parts of carborundum, 7-13 parts of silver nitrate, sodium metasilicate 3-
7-13 parts of 6 parts, 1-2 parts of rare earth, 7-13 parts of copper powder and lithium carbonate are made.
3. the high magnetic core for transformer of magnetic conductivity as claimed in claim 2, it is characterised in that：Calculate by weight, mainly by
15 parts of fused magnesite, 15 parts of boron trifluoride, 6 parts of nickel oxide, 3 parts of carborundum, 10 parts of silver nitrate, 4 parts of sodium metasilicate, 1.5 parts of rare earth,
10 parts of 10 parts of copper powder and lithium carbonate are made.
4. a kind of production method of the high magnetic core for transformer of magnetic conductivity as any one of claim 1-3, feature
It is：More than raw material is sent into blending tank, when 2500-3000 revs/min of stirring mixing 2-3 is small, rotary furnace pre-burning is sent into, in 350-
When pre-burning 2-3 is small at 400 DEG C, grinding pot is sent into, is ground to fineness as 60-80 μm；Squeeze into 0.1-0.2% isopropyl palmitate,
The calcium propionate of 0.02-0.1% is ground to fineness as 50-70 μm；The 3-5 times of water measured, the ammonium fluoroborate of 1-2% are added in, in 60-70
It is stirred at DEG C 20-30 minutes；Spray drying, be pressed into base, be sintered to get.
5. the production method of the high magnetic core for transformer of magnetic conductivity as claimed in claim 4, it is characterised in that：More than raw material is sent
Enter blending tank, when 2800 revs/min of stirring mixings 2.5 are small, are sent into rotary furnace pre-burning, when pre-burning 2.5 is small at 350-400 DEG C, send
Enter grinding pot, be ground to fineness as 70 μm；0.15% isopropyl palmitate, 0.005% calcium propionate is squeezed into, being ground to fineness is
60μm；Water, 1.5% ammonium fluoroborate of 4 times of amounts are added in, is stirred at 60-70 DEG C 25 minutes；Spray drying, is pressed into
Base, be sintered to get.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016801.2A CN108074723A (en) | 2016-11-18 | 2016-11-18 | High magnetic core for transformer of a kind of magnetic conductivity and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016801.2A CN108074723A (en) | 2016-11-18 | 2016-11-18 | High magnetic core for transformer of a kind of magnetic conductivity and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108074723A true CN108074723A (en) | 2018-05-25 |
Family
ID=62160031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611016801.2A Pending CN108074723A (en) | 2016-11-18 | 2016-11-18 | High magnetic core for transformer of a kind of magnetic conductivity and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108074723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071623A (en) * | 2020-09-17 | 2020-12-11 | 杭州肄康新材料有限公司 | Preparation method of soft magnetic material for high frequency |
-
2016
- 2016-11-18 CN CN201611016801.2A patent/CN108074723A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071623A (en) * | 2020-09-17 | 2020-12-11 | 杭州肄康新材料有限公司 | Preparation method of soft magnetic material for high frequency |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180525 |
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| WD01 | Invention patent application deemed withdrawn after publication |