CN106971801A - A kind of plus La does N45 neodymium iron boron formula and its processing method - Google Patents

A kind of plus La does N45 neodymium iron boron formula and its processing method Download PDF

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Publication number
CN106971801A
CN106971801A CN201710216139.3A CN201710216139A CN106971801A CN 106971801 A CN106971801 A CN 106971801A CN 201710216139 A CN201710216139 A CN 201710216139A CN 106971801 A CN106971801 A CN 106971801A
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iron boron
neodymium iron
formula
plus
mass percent
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詹前营
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DONGGUAN JIADA MAGNET PRODUCT Co Ltd
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DONGGUAN JIADA MAGNET PRODUCT Co Ltd
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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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • H01F1/0576—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 pressed, e.g. hot working
    • 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

Abstract

The invention discloses the neodymium iron boron formula and its processing method that a kind of plus La is N45, it is characterised in that the mass percent of formula, which is constituted, is：Pr, 5% 7%；Nd, 21% 23%；La, 4% 6%；B, 0.9% 1.4%；Co, 0.2% 0.5%；Al, 0.1% 0.6%；Cu, 0.1% 0.15%；Surplus is Fe；Its procedure of processing is as follows：1. constituted according to mass percent and weigh and mix each component；2. the melting in vacuum rapid hardening furnace, pours into the sheet metal that thickness is d, and d meets 0 ＜ d≤0.6mm；3. hydrogen is broken into 1 200 in hydrogen crushing furnaceμmParticle；4. 0 15 are broken into airflow millingμmParticle；5. moulding press is entered, 2.0TIt is molded under magnetic field, 200tIsostatic pressed under pressure；6. sintering furnace, 1070 DEG C of sintering, 900 DEG C of one-level tempering, 460 560 DEG C of second annealings are entered；By above-mentioned formula and processing method, magnetic material per ton can save material cost about 14%, optimize material composition, reduce production cost, improve the cost performance and practicality of NdFeB material.

Description

A kind of plus La does N45 neodymium iron boron formula and its processing method
Technical field
The invention belongs to technical field of magnetic materials, specifically disclose a kind of plus La and do N45 neodymium iron boron formula and its add Work method.
Background technology
Rare earth permanent-magnetic material is the permanent-magnet material of rare earth metal and magnesium-yttrium-transition metal through particular process fabrication.Due to it With high magnetic energy product and coercivity, and very high energy density, rare earth permanent-magnetic material machinery, electronics, instrument and The fields such as medical treatment are applied widely.However, having more than 30% or so mass fraction due to containing in conventional neodymium-iron-boron magnetic material Praseodymium neodymium rare element, cause this material cost remain high, greatly limit the application of neodymium-iron-boron magnetic material. To solve this problem, Ci Cai producers have developed various substitutes using substitute element, still, presently disclosed to replace Or for the content of the unilateral valuable rare element of reduction of material, cause product quality not reach requirement, or in reduction praseodymium neodymium Other precious metal components are introduced while content again, cost control effect is still undesirable.
The content of the invention
In view of the above-mentioned problems, to be to provide a kind of magnetic property excellent and relative inexpensiveness new for the main task of the present invention NdFeB material is formulated and its processing method, to reduce the production cost of existing NdFeB material, improves existing NdFeB material Practicality and cost performance.
The present invention is to solve the technical scheme that provides of its technical problem：
A kind of plus La does N45 neodymium iron boron formula, it is characterised in that the neodymium iron boron formula that La should be added to be N45 has following quality Percentage is constituted：
Pr, 5%-7%；Nd, 21%-23%；La, 4%-6%；
B, 0.9%-1.4%；Co, 0.2%-0.5%；Al, 0.1%-0.6%；Cu, 0.1%-0.15%；
Surplus is Fe.
Preferably, there is the neodymium iron boron formula that La should be added to be N45 following mass percent to constitute：
Pr, 6%；Nd, 22%；La, 5%；
B, 1%；Co, 0.3%；Al, 0.4%；Cu, 0.1%；
Surplus is Fe.
Preferably, there is the neodymium iron boron formula that La should be added to be N45 following mass percent to constitute：
Pr, 5%；Nd, 21%；La, 6%；
B, 1.4%；Co, 0.5%；Al, 0.6%；Cu, 0.15%；
Surplus is Fe.
Preferably, should plus La be N45 neodymium iron boron formula mass percent composition be：
Pr, 7%；Nd, 22%；La, 5%；
B, 1%；Co, 0.3%；Al, 0.3%；Cu, 0.15%；
Surplus is Fe.
Preferably, should plus La be N45 neodymium iron boron formula mass percent composition be：
Pr, 6%；Nd, 23%；La, 4%；
B, 0.9%；Co, 0.2%；Al, 0.1%；Cu, 0.15%；
Surplus is Fe.
On the other hand, the processing method of neodymium iron boron formula that the present invention is provided plus that La is N45 includes following procedure of processing：
Weighed according to the mass percent composition described in any of the above-described technical scheme and mix each component；
The melting in vacuum rapid hardening furnace, pours into the sheet metal that thickness is d, and d meets 0 ＜ d≤0.6mm；
Hydrogen is broken into 1-200 in hydrogen crushing furnaceμmParticle；
0-15 is broken into airflow millingμmParticle；
Enter moulding press, 2.0TIt is molded under magnetic field, 200tIsostatic pressed under pressure；
Enter sintering furnace, 1070 DEG C of sintering, 900 DEG C of one-level tempering, 460-560 DEG C of second annealing.
Preferably, step in the manufacture craft of Nd-Fe-B permanent magnet material containing cerium that the present invention is provided- stepUsed in Equipment be followed successively by：
600kgVacuum rapid hardening furnace, 1tHydrogen crushing furnace, 400 type airflow millings, 25 tons of moulding presses and 500 kilograms of sintering furnaces.
The present invention beneficial technique effect compared with prior art：
1st, the market price of current lanthanum, praseodymium metal and neodymium metal is respectively 2.95 ten thousand yuan/ton, 31.75 ten thousand yuan/ton and 31.85 ten thousand Yuan/ton., can be by existing neodymium-iron-boron magnetic material by adding the relatively low lanthanum component of price and micro cobalt aluminum bronze element The mass percentage content of middle praseodymium neodymium metal is reduced to 28% or so, produces the magnetic material per ton cost that saves material and is about 14%。
2nd, by increasing lanthanum element and copper aluminium cobalt metal, material composition is optimized, the indices of new material can reach N45 grade national standards.
It is attached below in conjunction with specification to make the goal of the invention, technical scheme and technique effect of the present invention clearer, clear and definite Figure and embodiment elaborate to the disclosed by the invention plus La neodymium iron boron formulas and its manufacture craft for being N45.
Brief description of the drawings
Fig. 1：By the demagnetizing curve for the magnetic material that making is formulated in preferred embodiment one.
Fig. 2：By the hysteresis curve for the magnetic material that making is formulated in preferred embodiment one.
Fig. 3：By the temperature characterisitic line for the magnetic material that making is formulated in preferred embodiment one.
Fig. 4：By the high temperature demagnetizing curve for the magnetic material that making is formulated in preferred embodiment one.
Embodiment
The neodymium iron boron formula that disclosed by the invention plus La is N45 has following mass percent composition：
Pr, 5%-7%；Nd, 21%-23%；La, 4%-6%；
B, 0.9%-1.4%；Co, 0.2%-0.5%；Al, 0.1%-0.6%；Cu, 0.1%-0.15%；
Surplus is Fe.
The mass percent formula of preferred embodiment one：
Pr, 6%；Nd, 22%；La, 5%；
B, 1%；Co, 0.3%；Al, 0.4%；Cu, 0.1%；
Surplus is Fe.
The mass percent formula of preferred embodiment two：
Pr, 5%；Nd, 21%；La, 6%；
B, 1.4%；Co, 0.5%；Al, 0.6%；Cu, 0.15%；
Surplus is Fe.
The mass percent formula of preferred embodiment three：
Pr, 7%；Nd, 22%；La, 5%；
B, 1%；Co, 0.3%；Al, 0.3%；Cu, 0.15%；
Surplus is Fe.
The mass percent formula of preferred embodiment four：
Pr, 6%；Nd, 23%；La, 4%；
B, 0.9%；Co, 0.2%；Al, 0.1%；Cu, 0.15%；
Surplus is Fe.
By taking preferred embodiment one as an example, various components are fired into Neodymium iron boron magnetic material by the present invention according to following processing step Material：
The mass percent composition disclosed in one weighs and mixes each component according to the preferred embodiment；
The melting in 600 kilograms of vacuum rapid hardening furnaces, and pour into the sheet metal that thickness is less than 0.6mm；
Hydrogen is broken into 1-200 microns of particle in 1t hydrogen crushing furnace；
0-15 microns of particle is broken into 400 type airflow millings；
Enter 25 tons of moulding presses, be molded under 2.0T magnetic field, isostatic pressed under 200 tons of pressure；
Enter 500 kilograms of sintering furnaces, sintered at 1070 DEG C, 900 DEG C of one-level tempering, 460-560 DEG C of second annealing；
The performance of magnet is tested using AMT-4 magnetic properties tester.
Cobalt aluminum bronze component is added in NdFeB material, the coercivity of material can be not only effectively improved, improves material Decay resistance and Curie temperature, while the mechanical properties such as the bending strength of NdFeB material, toughness can also be improved. Refer to Fig. 1-Fig. 4 and table 1, Fig. 1 and Fig. 4 is are formulated the magnetism testing of the magnetic material of making according to the preferred embodiment one Curve, table 1 is the according to the preferred embodiment one magnetic property index that the magnetic material made is respectively formulated into preferred embodiment four, by Chart understands that the properties for the magnetic material that the neodymium iron boron formula that provided according to the present invention plus La is N45 makes can reach To the quality requirement of national standard N45 grades.
FormThe magnetic property index measured in various preferred embodiments of the invention
The preferred embodiments of the present invention are elaborated above in association with Figure of description, it should explanation, the present invention Protection domain include but is not limited to above-described embodiment；Concrete structure disclosed in Figure of description is also the preferable of the present invention Embodiment, the technical staff in the field can also develop other embodiment on this basis, any not depart from wound of the present invention The simple deformation or equivalent substitution of new concept, are covered by the present invention, belong to protection scope of the present invention.

Claims (7)

1. a kind of plus La does N45 neodymium iron boron formula, it is characterised in that the neodymium iron boron formula that La should be added to be N45 has following matter Measure percentage composition：
Pr, 5%-7%；Nd, 21%-23%；La, 4%-6%；
B, 0.9%-1.4%；Co, 0.2%-0.5%；Al, 0.1%-0.6%；Cu, 0.1%-0.15%；
Surplus is Fe.
2. according to claim 1 plus La does N45 neodymium iron boron formula, it is characterised in that La should be added to do N45 neodymium iron boron Formula has following mass percent composition：
Pr, 6%；Nd, 22%；La, 5%；
B, 1%；Co, 0.3%；Al, 0.3%；Cu, 0.1%；
Surplus is Fe.
3. according to claim 1 plus La does N45 neodymium iron boron formula, it is characterised in that La should be added to do N45 neodymium iron boron Formula has following mass percent composition：
Pr, 5%；Nd, 21%；La, 6%；
B, 1.4%；Co, 0.5%；Al, 0.3%；Cu, 0.15%；
Surplus is Fe.
4. according to claim 1 plus La does N45 neodymium iron boron formula, it is characterised in that La should be added to do N45 neodymium iron boron The mass percent of formula is constituted：
Pr, 7%；Nd, 22%；La, 5%；
B, 1%；Co, 0.3%；Al, 0.4%；Cu, 0.15%；
Surplus is Fe.
5. according to claim 1 plus La does N45 neodymium iron boron formula, it is characterised in that La should be added to do N45 neodymium iron boron The mass percent of formula is constituted：
Pr, 6%；Nd, 23%；La, 4%；
B, 0.9%；Co, 0.2%；Al, 0.5%；Cu, 0.15%；
Surplus is Fe.
6. the processing method that a kind of plus La does N45 neodymium iron boron, it is characterised in that La should be added to do N45 neodymium iron boron processing method Including following procedure of processing：
Weighed according to the mass percent composition described in any one of claim 1-5 claim and mix each group Point；
The melting in vacuum rapid hardening furnace, pours into the sheet metal that thickness is d, and d meets 0 ＜ d≤0.6mm；
Hydrogen is broken into 1-200 in hydrogen crushing furnaceμmParticle；
0-15 is broken into airflow millingμmParticle；
Enter moulding press, 2.0TIt is molded under magnetic field, 200tIsostatic pressed under pressure；
Enter sintering furnace, 1070 DEG C of sintering, 900 DEG C of one-level tempering, 460-560 DEG C of second annealing.
7. the processing method of the Nd-Fe-B permanent magnet material according to claim 5 containing cerium, it is characterised in that the step- StepUsed in equipment be followed successively by：
600kgVacuum rapid hardening furnace, 1tHydrogen crushing furnace, 400 type airflow millings, 25 tons of moulding presses and 500 kilograms of sintering furnaces.
CN201710216139.3A 2017-04-05 2017-04-05 A kind of plus La does N45 neodymium iron boron formula and its processing method Pending CN106971801A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108417335A (en) * 2018-04-28 2018-08-17 东莞市嘉达磁电制品有限公司 A kind of Nd-Fe-B permanent magnet formula that bending strength is high and its processing method
CN113724954A (en) * 2021-08-27 2021-11-30 安徽吉华新材料有限公司 Heavy rare earth-free high-coercivity permanent magnet and preparation process thereof

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CN102436892A (en) * 2011-12-15 2012-05-02 钢铁研究总院 Low-neodymium, non-heavy-rare-earth and high-performance magnet and preparation method
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108417335A (en) * 2018-04-28 2018-08-17 东莞市嘉达磁电制品有限公司 A kind of Nd-Fe-B permanent magnet formula that bending strength is high and its processing method
CN113724954A (en) * 2021-08-27 2021-11-30 安徽吉华新材料有限公司 Heavy rare earth-free high-coercivity permanent magnet and preparation process thereof
CN113724954B (en) * 2021-08-27 2024-01-19 安徽吉华新材料有限公司 High-coercivity permanent magnet without heavy rare earth and preparation process thereof

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Application publication date: 20170721