CN107845469A - A kind of preparation technology of printer permanent magnet - Google Patents
A kind of preparation technology of printer permanent magnet Download PDFInfo
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- CN107845469A CN107845469A CN201711302355.6A CN201711302355A CN107845469A CN 107845469 A CN107845469 A CN 107845469A CN 201711302355 A CN201711302355 A CN 201711302355A CN 107845469 A CN107845469 A CN 107845469A
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- Prior art keywords
- permanent magnet
- temperature
- preparation technology
- printer
- handled
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Classifications
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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
- H01F1/04—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 metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- 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
- H01F41/0253—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 for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of preparation technology of printer permanent magnet, comprise the following steps：It is that less than more than 0.1 μm 1 μm of recrystallization gathers the R T B based permanent magnet powder of tissue to be ready to pass through HDDR methods to be manufactured and have average crystal particle diameter; by gained alloy melting in vacuum induction furnace in step 1); the vacuum of melting is 10 3Pa; water cooled copper mould is poured into a mould; resulting alloy pig, nitrogen, argon gas protection under through coarse crushing, in it is broken, milling to 36 μm.Beneficial effects of the present invention：Samarium, cobalt and other alloys of the metal-rare-earth material through proportioning have high energy product, extremely low temperature coefficient.
Description
Technical field
The present invention relates to a kind of permanent magnet, and in particular to a kind of preparation technology of printer permanent magnet.
Background technology
The momentum technology company that general headquarters are located at Dallas has been obtained for the 3D printing technique of Oak Ridge National Laboratory and permitted
Can, and the 3d made of recyclable materials of planned production first prints magnet, for electric automobile, wind turbine and high speed
Railway.Rare earth family is 15 elements from group of the lanthanides, plus the totally 17 kinds of elements of the scandium and yttrium with group of the lanthanides related intimate.They
It is：Lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium.A wherein important function is exactly
Permanent magnetism, the maximum user of neodymium (Nd) neodymium metal is Nd-Fe-B permanent magnet material.The appearance of Nd-Fe-B permanent magnet, led for Xitu Hi-Tech skill
Domain is filled with new life and vigor.Neodymium iron boron magnetic body magnetic energy product is high, referred to as contemporary " king of permanent magnetism ", with its excellent performance
The industries such as electronics, machinery are widely used in, but existing Ru-Fe-Mn permanent magnet is with the development of science and technology, Aero-Space, national defence troops
The continuous progress of the application fields such as thing, the operating temperature of Ru-Fe-Mn permanent magnet do not reach requirement gradually.
The content of the invention
Present invention aims at a kind of preparation technology of printer permanent magnet is provided, with original Ru-Fe-Mn permanent magnet
Effect under increase its magnetic behavior, improve its temperature performance under high-temperature work environment.
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：
The invention provides a kind of preparation technology of printer permanent magnet, comprise the following steps：
Step 1：Be ready to pass through HDDR methods manufactured and have average crystal particle diameter for less than more than 0.1 μm 1 μm again
The R-T-B based permanent magnet powder of crystallization set tissue, R are relative to the dilute of the R Nd integrally containing more than 95 atom % and/or Pr
Great soil group element, T are Fe or a Fe part are substituted by into Co and/or Ni, Fe containing more than 50 atom % transition metal
Element.
Step 2：Purity is more than to 99.9% Sm, Co presses SmCo5Or Sm, Co, Fe, Cu, Zr press Sm (CoFeCuZr)z(Z
=7.4-8.3) proportioning configure after be put in electric arc furnaces, be evacuated down to 10-3Pa or more, then pass to 0.8-1.2 air
The high purity argon of pressure, under the protection of argon gas melt back obtain composition uniform alloy cast ingot 3-4 times.
Step 3：By gained alloy melting in vacuum induction furnace in step 1), the vacuum of melting is 10-3Pa, water
Cold copper mould casting, resulting alloy pig, nitrogen, argon gas protection under through coarse crushing, in it is broken, milling arrive 3-6 μm.
Step 4：Gained alloy cast ingot in step 2) is subjected to high-temperature process, after gained powder in step 3) added into stirring
Uniformly.
Step 5：The powder to stir is orientated in 1.2-1.5T magnetic fields, in 1-3 tons/cm2 Forming under Pressure, gained
It is air-cooled to arrive room temperature, 900~350 DEG C of insulation 3h of aging temp after solid solution to 1250 DEG C~1056 DEG C of blank block footpath sintered heat insulating 2h
After quench water cooling.
As a preferred technical solution of the present invention, the SmCo5The step of high-temperature process of type, is as follows：900 DEG C of temperature
Degree is lower to carry out 3 hours isothermal processes.
As a preferred technical solution of the present invention, the Sm (CoFeCuZr)z(Z=7.4-8.3) at the high temperature of type
It is as follows to manage step：Handled 24 hours at a temperature of 800-1850 DEG C, 4 are handled at a temperature of being handled 2 hours, 600 DEG C at a temperature of 700 DEG C
Hour, handled 10 hours at a temperature of being handled 6 hours, 400 DEG C at a temperature of 500 DEG C.
As a preferred technical solution of the present invention, the R-T-B based permanent magnets powder is free of Dy and Tb.
As a preferred technical solution of the present invention, rapid quenching can also be carried out after the step 3).
In technical scheme, there is higher coercivity to improve effect by Dy and Tb, and still, these elements are rare
Resource, for expensive element.Therefore, it is strongly desired to suppress Dy and Tb usage amount in Min. and HDDR can be improved
The coercivity of magnetic.Samarium cobalt magnet is also known as SmCo magnet steel, samarium cobalt permanent magnet body, SmCo permanent magnet, rare-earth cobalt permanent magnet etc..Be by
Samarium, cobalt and other metal-rare-earth materials are through proportioning, and smelting is into alloy, manufactured a kind of magnetic material after crushing, die mould, sintering
Material, there is high energy product, extremely low temperature coefficient, for maximum operating temperature up to 350 DEG C, subzero temperature is unlimited, in 180 DEG C of operating temperature
During the above, its maximum magnetic energy product and temperature stability and chemical stability exceed Nd-Fe-B permanent magnet material.Resist with very strong
Corrosion and inoxidizability, because material is rare, now in common Ru-Fe-Mn permanent magnet, can greatly improve its maximum magnetic energy product and
Temperature stability.
Beneficial effects of the present invention：Samarium, cobalt and other alloys of the metal-rare-earth material through proportioning have high energy product, extremely low
Temperature coefficient, for maximum operating temperature up to 350 DEG C, subzero temperature is unlimited, in more than 180 DEG C of operating temperature, its maximum magnetic energy product
And temperature stability and chemical stability exceed Nd-Fe-B permanent magnet material.With very strong anticorrosive and inoxidizability, due to
Material is rare, now in common Ru-Fe-Mn permanent magnet, can greatly improve its maximum magnetic energy product and the temperature stability present invention is right
Existing Ru-Fe-Mn manufacturing process is improved, and samarium-cobalt material is added in preparation process, and is added in a manufacturing process various
The different high-temperature process of temperature, it greatly strengthen its maximum magnetic energy product and temperature stability in high temperature environments.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below by embodiment, the present invention is further detailed explanation.
Embodiment
Embodiment 1
The present invention provides a kind of preparation technology of printer permanent magnet, comprises the following steps：Step 1：It is ready to pass through
HDDR methods are manufactured and had the R-T-B systems for the recrystallization set tissue that average crystal particle diameter is less than more than 0.1 μm 1 μm forever
Magnet powder, R are the rare earth element relative to the R Nd integrally containing more than 95 atom % and/or Pr, and T is Fe or by Fe's
A part is substituted by Co and/or Ni, Fe containing more than 50 atom % transition metal.
Step 2：Purity is more than to 99.9% Sm, Co presses SmCo5Or Sm, Co, Fe, Cu, Zr press Sm (CoFeCuZr)z(Z
=7.4-8.3) proportioning configure after be put in electric arc furnaces, be evacuated down to 10-3Pa or more, then pass to 0.8-1.2 air
The high purity argon of pressure, under the protection of argon gas melt back obtain composition uniform alloy cast ingot 3-4 times.
Step 3：By gained alloy melting in vacuum induction furnace in step 1), the vacuum of melting is 10-3Pa, water
Cold copper mould casting, resulting alloy pig, nitrogen, argon gas protection under through coarse crushing, in it is broken, milling arrive 3-6 μm.
Step 4：Gained alloy cast ingot in step 2) is subjected to high-temperature process, after gained powder in step 3) added into stirring
Uniformly.
Step 5：The powder to stir is orientated in 1.2-1.5T magnetic fields, in 1-3 tons/cm2 Forming under Pressure, gained
It is air-cooled to arrive room temperature, 900~350 DEG C of insulation 3h of aging temp after solid solution to 1250 DEG C~1056 DEG C of blank block footpath sintered heat insulating 2h
After quench water cooling.
Embodiment 2
The present invention provides a kind of preparation technology of printer permanent magnet, comprises the following steps：
Step 1：Be ready to pass through HDDR methods manufactured and have average crystal particle diameter for less than more than 0.1 μm 1 μm again
The R-T-B based permanent magnet powder of crystallization set tissue, R are relative to the dilute of the R Nd integrally containing more than 95 atom % and/or Pr
Great soil group element, T are Fe or a Fe part are substituted by into Co and/or Ni, Fe containing more than 50 atom % transition metal
Element.
Step 2：Purity is more than to 99.9% Sm, Co presses SmCo5Or Sm, Co, Fe, Cu, Zr press Sm (CoFeCuZr)z(Z
=7.4-8.3) proportioning configure after be put in electric arc furnaces, be evacuated down to 10-3Pa or more, then pass to 0.8-1.2 air
The high purity argon of pressure, under the protection of argon gas melt back obtain composition uniform alloy cast ingot 3-4 times.
Step 3：By gained alloy melting in vacuum induction furnace in step 1), the vacuum of melting is 10-3Pa, water
Cold copper mould casting, resulting alloy pig, nitrogen, argon gas protection under through coarse crushing, in it is broken, milling arrive 3-6 μm.
Step 4：After gained alloy cast ingot carries out rapid quenching in step 2), then carry out high-temperature process, after by step 3)
Middle gained powder is added and stirred.
Step 5：The powder to stir is orientated in 1.2-1.5T magnetic fields, in 1-3 tons/cm2 Forming under Pressure, gained
It is air-cooled to arrive room temperature, 900~350 DEG C of insulation 3h of aging temp after solid solution to 1250 DEG C~1056 DEG C of blank block footpath sintered heat insulating 2h
After quench water cooling.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of preparation technology of printer permanent magnet, it is characterised in that comprise the following steps：
Step 1：It is ready to pass through the recrystallization that HDDR methods are manufactured and had average crystal particle diameter to be less than more than 0.1 μm 1 μm
Gather the R-T-B based permanent magnet powder of tissue, R is the terres rares relative to the R Nd integrally containing more than 95 atom % and/or Pr
Element, T are Fe or a Fe part are substituted by into Co and/or Ni, Fe containing more than 50 atom % transition metal.
Step 2：Purity is more than to 99.9% Sm, Co presses SmCo5Or Sm, Co, Fe, Cu, Zr press Sm (CoFeCuZr)z(Z=
Proportioning 7.4-8.3) is put in electric arc furnaces after configuring, and is evacuated down to 10-3Pa or more, then pass to 0.8-1.2 atmospheric pressure
High purity argon, under the protection of argon gas melt back obtain composition uniform alloy cast ingot 3-4 times.
Step 3：By gained alloy melting in vacuum induction furnace in step 1), the vacuum of melting is 10-3Pa, water-cooled copper
Mould pour into a mould, resulting alloy pig, nitrogen, argon gas protection under through coarse crushing, in it is broken, milling arrive 3-6 μm.
Step 4：Gained alloy cast ingot in step 2) is subjected to high-temperature process, after that gained powder in step 3) is added into stirring is equal
It is even.
Step 5：The powder to stir is orientated in 1.2-1.5T magnetic fields, in 1-3 tons/cm2 Forming under Pressure, resulting hair
1250 DEG C~1056 DEG C of briquet footpath sintered heat insulating 2h, it is air-cooled to arrive room temperature after solid solution, quenched after 900~350 DEG C of insulation 3h of aging temp
Fiery water cooling.
A kind of 2. preparation technology of printer permanent magnet according to claim 1, it is characterised in that the SmCo5Type
The step of high-temperature process, is as follows：3 hours isothermal processes are carried out at a temperature of 900 DEG C.
A kind of 3. preparation technology of printer permanent magnet according to claim 1-2, it is characterised in that the Sm
(CoFeCuZr)z(Z=7.4-8.3) high temperature processing step of type is as follows：Handled 24 hours at a temperature of 800-1850 DEG C, 700
10 are handled at a temperature of being handled 6 hours, 400 DEG C at a temperature of being handled 4 hours, 500 DEG C at a temperature of being handled 2 hours, 600 DEG C at a temperature of DEG C
Hour.
A kind of 4. preparation technology of printer permanent magnet according to claim 1-3, it is characterised in that the R-T-B
Based permanent magnet powder is free of Dy and Tb.
A kind of 5. preparation technology of printer permanent magnet according to claim 1-4, it is characterised in that the step 3)
Rapid quenching can also be carried out afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711302355.6A CN107845469A (en) | 2017-12-10 | 2017-12-10 | A kind of preparation technology of printer permanent magnet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711302355.6A CN107845469A (en) | 2017-12-10 | 2017-12-10 | A kind of preparation technology of printer permanent magnet |
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| Publication Number | Publication Date |
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| CN107845469A true CN107845469A (en) | 2018-03-27 |
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ID=61664804
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| CN201711302355.6A Pending CN107845469A (en) | 2017-12-10 | 2017-12-10 | A kind of preparation technology of printer permanent magnet |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640087A (en) * | 2008-07-04 | 2010-02-03 | 大同特殊钢株式会社 | Rare earth magnet and production process thereof |
| CN102543340A (en) * | 2011-12-30 | 2012-07-04 | 北矿磁材科技股份有限公司 | High-performance samarium-cobalt magnetic powder and preparation method thereof |
| CN104759628A (en) * | 2015-01-26 | 2015-07-08 | 横店集团东磁股份有限公司 | Method for preparing heat-resistance sintering NdFeB permanent magnet material |
| WO2017001868A1 (en) * | 2015-07-01 | 2017-01-05 | The University Of Birmingham | Magnet production |
-
2017
- 2017-12-10 CN CN201711302355.6A patent/CN107845469A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640087A (en) * | 2008-07-04 | 2010-02-03 | 大同特殊钢株式会社 | Rare earth magnet and production process thereof |
| CN102543340A (en) * | 2011-12-30 | 2012-07-04 | 北矿磁材科技股份有限公司 | High-performance samarium-cobalt magnetic powder and preparation method thereof |
| CN104759628A (en) * | 2015-01-26 | 2015-07-08 | 横店集团东磁股份有限公司 | Method for preparing heat-resistance sintering NdFeB permanent magnet material |
| WO2017001868A1 (en) * | 2015-07-01 | 2017-01-05 | The University Of Birmingham | Magnet production |
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Application publication date: 20180327 |