New Materials

Description?&?Specification:
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Product Name:High Magnetic Injection Molded Magnet with NdFeB+ Polyhenylene Sulfide?
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PPS Polymer binders offer good high temperature performance with minimal absorption of liquids and good chemical resistance. But brittle than others.
Listing?Description
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1. Complex?shapes?with?high?precision.
2. Adjustable?magnetic?properties.
3. Insert?molding.
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Applications
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Sensors,Linear?actuators,Microphone?assemblies,?Magnetic?separators,DC?and?servo?motors,
Speakers?Printers,Magnetic?hooks,Computer?rigid?disc?drives,Beam?controls,Intelligent?toys,
MRI/NMR?Electric?component,etc.
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Injection?molded?NdFeB
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Besides?sintered?magnets?and?bonded?magnets?categories,?injection?molded?magnet?is?one?of?the?
more?important?developments?in?magnetic?materials,?it?has?opened?a?new?world?of?application?
opportunities.?Similar?to?plastic?injection?molding,?magnet?injection?molding?process?is?by?mixing?the?
magnetic?powder?together?with?polymer?binder,?heated?in?the?injection?machine?and?shooting?the?
melted?mixtures?into?the?mold?to?achieve?different?shapes?of?products.
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Features?and?benefits?of?injection?molded?NdFeB
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1. ?Injection?molded?magnets?can?be?of?very?complex?shapes?with?high?precision,?typically,?tolerance?
is+/-0.005mm,?it?is?suitable?for?high?precision?parts.
2. It?is?a?new?technology?to?achieve?adjustable?magnetic?properties,?composite?molding,?elastic?
magnetization?and?high?mechanical?strength.
3.?By?doing?insert?molding,?magnetic?material?can?be?directly?molded?into?or?onto?other?assembly?
components?without?further?assembly?process.
4. Magnetic?powder?is?neodymium-iron-boron?(NdFeB),?either?isotropic?or?anisotropic.?And?Polymer?binders?utilized?are?PA6,PA12?and?PPS.?
5. Anisotropic?NdFeB?powder?achieves?the?highest?magnetic?force?as?injection?molded?magnet.?
And?it?is?possible?to?achieve?BHmax?17GMOe,?and?can?replace?some?of?sintered?products.
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Injection?NdFeB?Material?Magnetic?Properties
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Maximum?application?temperature?is?related?with?magnetic?powder?and?polymer?binder.?NdFeB?material?
suffers?significant?irreversible?magnetic?loss?above?120°C,?regardless?of?which?binder?is?used.?And?on?
the?other?hand,?the?HDT?(heat?deformation?temperature)?of?the?binders?is?low,?when?application?
temperature?exceeds?the?HDT,?the?binder?in?injection?molded?magnet?will?become?soft?at?some?extent,?
which?jeopardizes?the?product.?Maximum?application?temperatures?are?listed?in?following?sheet.
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NdFeB Material Magnetic Properties |
Grade | Material | Magnetic feature | Residual flux density?
(Br) | Coercive force?????????????????????
(bHc) | Intrinsic Coercive force (iHc) | Max Energy Product (Bhmax) | Max application
Temperature |

mT | Gs | KA/m | Oe | KA/m | Oe | KJ/m 3 | GMOe | Centigrade |
MJMN1210 | NdFeB+PA12 | Isotropic | 454 | 4,540 | 305 | 3,830 | 691 | 8,680 | 35.0 | 4.40 | 100 |
MJMN1220 | NdFeB+PA12 | Isotropic | 507 | 5,070 | 338 | 4,250 | 693 | 9,048 | 43.0 | 5.40 | 100 |
MJMN1230 | NdFeB+PA12 | Isotropic | 536 | 5,360 | 353 | 4,430 | 773 | 9,700 | 47.0 | 5.90 | 100 |
MJMN1240 | NdFeB+PA12 | Isotropic | 619 | 6,190 | 385 | 4,840 | 704 | 8,850 | 59.7 | 7.50 | 100 |
MJMN1310 | NdFeB+PA12 | Anisotropic | 683 | 6,830 | 484 | 6,075 | 1,154 | 14,495 | 86.2 | 10.80 | 100 |
MJMN1320 | NdFeB+PA12 | Anisotropic | 735 | 7,350 | 515 | 6,470 | 1,136 | 14,280 | 99.5 | 12.50 | 100 |
MJMN1330 | NdFeB+PA12 | Anisotropic | 823 | 8,230 | 540 | 6,780 | 1,089 | 13,680 | 119.8 | 15.10 | 100 |
MJMN1410 | NdFeB+PPS | Isotropic | 435 | 4,350 | 300 | 3,770 | 680 | 8,545 | 32.0 | 4.02 | 120 |
MJMN1420 | NdFeB+PPS | Isotropic | 480 | 4,800 | 310 | 3,896 | 680 | 8,545 | 39.7 | 4.99 | 120 |
MJMN1510 | NdFeB+PPS | Anisotropic | 658 | 6,580 | 466 | 5,855 | 1,377 | 17,305 | 78.7 | 9.90 | 120 |
MJMN1520 | NdFeB+PPS | Anisotropic | 676 | 6,760 | 472 | 5,925 | 1,145 | 14,385 | 82.7 | 10.40 | 120 |
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Our?Core?Competence:
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1. Specialized?in?injection?molded?magnets?since?1999?.
2. Focused?on?injection?molded?anisotropic?NdFeB/PPS?magnets.
3. Advanced?technology?on?Tooling?design?and?fabrication.
4. Largest?NdFeB/PPS?magnet?manufacturer?in?China.?
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About?us:
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Zhongci?Holding:
Guangzhou?ZhongCi?Magnetic?Co.,?Ltd(Location:?Zengcheng,?Guangzhou)
MingJie?Magnets?Co.,?Limited(Wuxi,?Jiangsu)