CN107321997A - The processing method of magnetic - Google Patents
The processing method of magnetic Download PDFInfo
- Publication number
- CN107321997A CN107321997A CN201710516991.2A CN201710516991A CN107321997A CN 107321997 A CN107321997 A CN 107321997A CN 201710516991 A CN201710516991 A CN 201710516991A CN 107321997 A CN107321997 A CN 107321997A
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- CN
- China
- Prior art keywords
- magnetic
- processing method
- plasma torch
- particle
- atomization
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/086—Cooling after atomisation
- B22F2009/0876—Cooling after atomisation by gas
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The present invention relates to the processing method of magnetic, belong to the preparing technical field of magnetic.Present invention solves the technical problem that being to provide a kind of processing method of the magnetic of even particle distribution.The processing method of magnetic of the present invention, prepares magnetic using plasma method, comprises the following steps：A, the silk material that magnetic material is prepared into a diameter of 10~15mm；B, under inert gas shielding, using plasma torch by silk material atomized molten, it is atomized after magnetic powder particle；C, cooling：Magnetic powder particle after atomization enters cooling tower, into cooling tower by room temperature inert gas, is quenched the magnetic powder particle after atomization, obtains powder product.The present invention prepares magnetic using plasma method, and the particle diameter of gained magnetic is 100~300nm, and particle diameter distribution is more uniform, overcomes conventional physical method and prepares magnetic and hardly results in ultra-fine grain and the uneven defect of particle size distribution.
Description
Technical field
The present invention relates to the processing method of magnetic, belong to the preparing technical field of magnetic.
Background technology
Ferroso-ferric oxide (Fe3O4) it is one of magnetic material very early, it is also the maximum class material of magnetic consumption, with
The development of nanometer technology, nano-magnetic powder also becomes the focus of research, and nano-magnetic powder can be widely applied to magnetic recording material, magnetic current
The technical fields such as body, magnetic high analyte material, stealth material, Radiation-proof antistatic fiber.
At present, the preparation method of nano-magnetic powder has a lot, is broadly divided into two classes：One is chemical method, such as chemical precipitation method,
Sol-gel process, hydro-thermal method, polyol reduction method and thermal decomposition method etc.；Two be physical method, such as mechanical crushing method.Adopt
It is related to chemical reaction with the method for chemistry, easily causes environmental pollution, therefore, Physical is increasingly by the weight of researcher
Depending on.
At present, physical crushing method mainly obtains magnetic powder particle by mechanical crushing, still, common mechanical crushing method
What is obtained is micron-sized powder, it is impossible to obtain ultra-fine nano-particle, and the particle generally existing distribution of particles obtained is uneven
Even defect.
The content of the invention
To overcome disadvantages described above, present invention solves the technical problem that being to provide a kind of processing of the magnetic of even particle distribution
Method.
The processing method of magnetic of the present invention, magnetic is prepared using plasma method.
It is preferred that, the processing method of the magnetic comprises the following steps：
A, the silk material that magnetic material is prepared into a diameter of 10~15mm；
B, under inert gas shielding, using plasma torch by silk material atomized molten, it is atomized after magnetic powder particle；
C, cooling：Magnetic powder particle after atomization enters cooling tower, into cooling tower by room temperature inert gas, makes after atomization
Magnetic powder particle quenching, obtain powder product.
It is preferred that, the inert gas is helium or argon gas.
It is preferred that, the plasma torch is at least two, is symmetric, the thermal current that each plasma torch sprays
Same machining area is gathered in, silk material is melted atomization in the machining area.
Preferably, the plasma torch is 6.
It is further preferred that silk material enters a speed for 0.1~0.15m/s, the power of each plasma torch for 40~
80kW, the air-flow spouting velocity of plasma torch mouthful is 100~200L/min.
It is preferred that, the magnetic material is ferroso-ferric oxide or chromium dioxide.
Compared with prior art, the present invention has the advantages that：
The present invention prepares magnetic using plasma method, and the particle diameter of gained magnetic is 100~300nm, and particle diameter distribution
It is more uniform, overcome conventional physical method and prepare that magnetic hardly results in ultra-fine grain and particle size distribution is uneven lacks
Fall into.
Embodiment
The processing method of magnetic of the present invention, magnetic is prepared using plasma method.
It is preferred that, the processing method of the magnetic comprises the following steps：
A, the silk material that magnetic material is prepared into a diameter of 10~15mm；
B, under inert gas shielding, using plasma torch by silk material atomized molten, it is atomized after magnetic powder particle；
C, cooling：Magnetic powder particle after atomization enters cooling tower, into cooling tower by room temperature inert gas, makes after atomization
Magnetic powder particle quenching, obtain powder product.
Conventional inert gas is applied to the present invention, it is preferred that the inert gas is helium or argon gas.
For more preferable atomized molten effect, preferably described plasma torch is at least two, is symmetric, each etc.
The thermal current that gas ions torch sprays is gathered in same machining area, and silk material is melted atomization in the machining area.
Preferably, the plasma torch is 6.
It is further preferred that silk material enters a speed for 0.1~0.15m/s, the power of each plasma torch for 40~
80kW, the air-flow spouting velocity of plasma torch mouthful is 100~200L/min.
This area use magnetic material be applied to the present invention, it is preferred that the magnetic material be ferroso-ferric oxide or
Chromium dioxide.
The embodiment of the present invention is further described with reference to embodiment, not therefore by present invention limit
System is among described scope of embodiments.
Embodiment 1
Adopt and prepare magnetic with the following method：
A, the silk material that ferroso-ferric oxide is prepared into a diameter of 15mm；
B, under argon gas protection, using plasma torch by silk material atomized molten, it is atomized after magnetic powder particle；Its
In, the plasma torch is 6, is symmetric, and the thermal current that each plasma torch sprays is gathered in same processing
Region, silk material is melted atomization in the machining area；A speed of entering for silk material is 0.15m/s, the power of each plasma torch
For 50kW, the air-flow spouting velocity of plasma torch mouthful is 150L/min；
C, cooling：Magnetic powder particle after atomization enters cooling tower, into cooling tower by room temperature argon gas, makes the magnetic after atomization
Powder particles are quenched, and obtain powder product.
Obtained magnetic is measured, its particle diameter is 100~300nm, and particle diameter distribution is more uniform.
Embodiment 2
Adopt and prepare magnetic with the following method：
A, the silk material that chromium dioxide is prepared into a diameter of 12mm；
B, under argon gas protection, using plasma torch by silk material atomized molten, it is atomized after magnetic powder particle；Its
In, the plasma torch is 4, is symmetric, and the thermal current that each plasma torch sprays is gathered in same processing
Region, silk material is melted atomization in the machining area；A speed of entering for silk material is 0.12m/s, the power of each plasma torch
For 60kW, the air-flow spouting velocity of plasma torch mouthful is 120L/min；
C, cooling：Magnetic powder particle after atomization enters cooling tower, into cooling tower by room temperature argon gas, makes the magnetic after atomization
Powder particles are quenched, and obtain powder product.
Obtained magnetic is measured, its particle diameter is 100~300nm, and particle diameter distribution is more uniform.
Embodiment 3
Adopt and prepare magnetic with the following method：
A, the silk material that ferroso-ferric oxide is prepared into a diameter of 10mm；
B, under argon gas protection, using plasma torch by silk material atomized molten, it is atomized after magnetic powder particle；Its
In, the plasma torch is 6, is symmetric, and the thermal current that each plasma torch sprays is gathered in same processing
Region, silk material is melted atomization in the machining area；A speed of entering for silk material is 0.15m/s, the power of each plasma torch
For 40kW, the air-flow spouting velocity of plasma torch mouthful is 100L/min；
C, cooling：Magnetic powder particle after atomization enters cooling tower, into cooling tower by room temperature argon gas, makes the magnetic after atomization
Powder particles are quenched, and obtain powder product.
Obtained magnetic is measured, its particle diameter is 100~300nm, and particle diameter distribution is more uniform.
Embodiment 4
Adopt and prepare magnetic with the following method：
A, the silk material that ferroso-ferric oxide is prepared into a diameter of 15mm；
B, under argon gas protection, using plasma torch by silk material atomized molten, it is atomized after magnetic powder particle；Its
In, the plasma torch is 2, is symmetric, and the thermal current that each plasma torch sprays is gathered in same processing
Region, silk material is melted atomization in the machining area；A speed of entering for silk material is 0.15m/s, the power of each plasma torch
For 80kW, the air-flow spouting velocity of plasma torch mouthful is 200L/min；
C, cooling：Magnetic powder particle after atomization enters cooling tower, into cooling tower by room temperature argon gas, makes the magnetic after atomization
Powder particles are quenched, and obtain powder product.
Obtained magnetic is measured, its particle diameter is 100~300nm, and particle diameter distribution is more uniform.
Claims (7)
1. the processing method of magnetic, it is characterised in that：Magnetic is prepared using plasma method.
2. the processing method of magnetic according to claim 1, it is characterised in that comprise the following steps：
A, the silk material that magnetic material is prepared into a diameter of 10~15mm；
B, under inert gas shielding, using plasma torch by silk material atomized molten, it is atomized after magnetic powder particle；
C, cooling：Magnetic powder particle after atomization enters cooling tower, into cooling tower by room temperature inert gas, makes the magnetic after atomization
Powder particles are quenched, and obtain powder product.
3. the processing method of magnetic according to claim 2, it is characterised in that：The inert gas is helium or argon gas.
4. the processing method of the magnetic according to Claims 2 or 3, it is characterised in that：The plasma torch is at least 2
It is individual, it is symmetric, the thermal current that each plasma torch sprays is gathered in same machining area, and silk material is in the machining area
It is melted atomization.
5. the processing method of magnetic according to claim 4, it is characterised in that：The plasma torch is 6.
6. the processing method of magnetic according to claim 5, it is characterised in that：Enter a speed for 0.1~0.15m/s, often
The power of individual plasma torch is 40~80kW, and the air-flow spouting velocity of plasma torch mouthful is 100~200L/min.
7. the processing method of the magnetic according to any one of claim 2~6, it is characterised in that：The magnetic material is four
Fe 3 O or chromium dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516991.2A CN107321997A (en) | 2017-06-29 | 2017-06-29 | The processing method of magnetic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516991.2A CN107321997A (en) | 2017-06-29 | 2017-06-29 | The processing method of magnetic |
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| CN107321997A true CN107321997A (en) | 2017-11-07 |
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| CN201710516991.2A Pending CN107321997A (en) | 2017-06-29 | 2017-06-29 | The processing method of magnetic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216294A (en) * | 2019-06-26 | 2019-09-10 | 苏州猛犸新材料科技有限公司 | A kind of preparation method of Ni-Ti-Y multicomponent compound metal micro mist |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09283452A (en) * | 1996-04-18 | 1997-10-31 | Mitsubishi Heavy Ind Ltd | Plasma chemical vapor deposition apparatus |
| CN101891163A (en) * | 2010-07-07 | 2010-11-24 | 北京科技大学 | Method for preparing superfine spherical iron nitride powder |
| CN103769594A (en) * | 2013-11-25 | 2014-05-07 | 王利民 | Technological method and device for preparing high-purity spherical superfine/nanoscale powdered materials in plasma atomization mode |
| CN105215372A (en) * | 2015-10-21 | 2016-01-06 | 龙岩紫荆创新研究院 | A kind of preparation of 3D printing NdFeB magnetic powder |
| CN106216702A (en) * | 2016-07-21 | 2016-12-14 | 中国有色桂林矿产地质研究院有限公司 | A kind of spherical titanium or the preparation method of Titanium Powder |
-
2017
- 2017-06-29 CN CN201710516991.2A patent/CN107321997A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09283452A (en) * | 1996-04-18 | 1997-10-31 | Mitsubishi Heavy Ind Ltd | Plasma chemical vapor deposition apparatus |
| CN101891163A (en) * | 2010-07-07 | 2010-11-24 | 北京科技大学 | Method for preparing superfine spherical iron nitride powder |
| CN103769594A (en) * | 2013-11-25 | 2014-05-07 | 王利民 | Technological method and device for preparing high-purity spherical superfine/nanoscale powdered materials in plasma atomization mode |
| CN105215372A (en) * | 2015-10-21 | 2016-01-06 | 龙岩紫荆创新研究院 | A kind of preparation of 3D printing NdFeB magnetic powder |
| CN106216702A (en) * | 2016-07-21 | 2016-12-14 | 中国有色桂林矿产地质研究院有限公司 | A kind of spherical titanium or the preparation method of Titanium Powder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216294A (en) * | 2019-06-26 | 2019-09-10 | 苏州猛犸新材料科技有限公司 | A kind of preparation method of Ni-Ti-Y multicomponent compound metal micro mist |
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