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Bonded magnet materials can be created through Injection Molded and can be made from NdFeB, Strontium Ferrite or a combination of the two. Bonded magnets that are created through injection molding can be molded into complex shapes and also molded directly onto components. Bonded magnets can also be created through the process of compression bonding which offer higher magnetic output but are limited to simpler geometries than Injection Molded materials. Compression Bonded magnets can be made from either NdFeB or SmCo powders.
Injection Molded:Binder Types / Nylon / PPS / Polyamide.Temperature Range -40c 180cVery Tight tolerances off tool ( 0.002 -0.003 Typical )Very good mechanical strengthCompression Bonded:Higher Magnetic Strength due to higher magnetic particle density.Epoxy Binder / Resistant to normal industrial solvents and automotive fluidsEpoxy Coat after manufacturing to prevent oxidationTemperature Range -40c 165c"Tight" tolerances off toolGood mechanical strengthTypical Bonded Magnet Applications:SensorsBrushless DC MotorsHousehold AppliancesCompressorautomatic doorGeneral Bonded Magnet Applications:Materials are isotropic and can be magnetized in any directionWide range of existing tool sizes are available in rings, discs and rectanglesExsisting Multipole magnetizing fixtures for quick prototypingEasily machinedExisting Multipole rings simplify assembly verse arc sepmentsAbout us:Â
Ningbo ZhongYuan Magnet Co., Ltd. was founded in 2008,as a professional manufacturer and exporter,we are specialized in designing and producing of rare earth magnet ,especially for sintered and bonded NdFeB(Neodymium) magnets. Currently we mass produce N52,50M,48H,45SH, 40UH, 38EH , 33AH and other grade of sintered NdFeB(Neodymium) magnet.They are widely used in Automobile, Wind Power, Servo and so on. Our factory is located in Ningbo ,Where is the industrial bases of Ndfeb magnet.
With advanced processing and test equipment, The stablility, consistency and tolerance of our magnets can be well controled.Choose ZhongYuan Magnet you can experience more professional technical advice, fast quotation, ordered production plan, quality control and convenient mode of transportation. Which can support us to provide good products and timely delivery. Problem analysis in your position is always our service tenet.Â
If you have any interest or inquiries for Neodymium(NdFeB) magnet,you are welcomed to inquire here.We are sure you will be satisfied with our price and service.
| Magnetic Characteristics and Physical Properties of Bonded Compression Moulding NdFeB | ||||||||||||
| Â Â Grade | SYM-2 | SYM-4 | SYM-6 | SYM-8L | SYM-8 | SYM-8SR | SYM-10 | SYM-10H | SYM-12 | SYM-12L | SYM-13L | |
| Br                                | (mT) | 300-400 | 400-500 | 500-600 | 600-650 | 630-680 | 620-680 | 680-730 | 700-750 | 720-770 | 760-810 | 780-830 |
| Residual Induction               |  (KGs) | (3.0-4.0) | (4.0-5.0) | (5.0-6.0) | (6.0-6.5) | (6.3-6.8) | (6.2-6.8) | (6.8-7.3) | (7.0-7.5) | (7.2-7.7) | (7.6-8.1) | (7.8-8.3) |
| Hcb                      | (KA/m) | 240-320 | 240-320 | 320-400 | 360-440 | 400-480 | 400-480 | 400-480 | 440-520 | 440-520 | 400-480 | 400-480 |
| Coercive Force                      | (KOe) | (3.0-4.0) | (3.0-4.0) | (4.0-5.0) | (4.5-5.5) | (5.0-6.0) | (5.0-6.0) | (5.0-6.0) | (4.5-6.5) | (5.5-6.5) | (5.0-6.0) | (5.0-6.0) |
| Hcj                | (KA/m) | 480-640 | 560-720 | 560-720 | 640-800 | 640-800 | 880-1120 | 640-800 | 640-800 | 720-800 | 480-640 | 480-640 |
| Intrinsic Coercive Force     | (KOe) | (6.0-8.0) | (7.0-9.0) | (7.0-9.0) | (8.0-10.0) | (8.0-10.0) | (11.0-14.0) | (8.0-10.0) | (8.0-10.0) | (9.0-10.0) | (6.0-8.0) | (6.0-8.0) |
| ( BH ) max   | (KJ/m3) | 24-32 | 32-44 | 52-60 | 60-68 | 68-76 | 68-76 | 76-84 | 80-88 | 88-96 | 88-96 | 88-104 |
| Max. Energy Product          |  (MGOe) | (3.0-4.0) | (4.0-5.5) | (6.5-7.5) | (7.5-8.5) | (8.5-9.5) | (8.5-9.5) | (9.5-10.5) | (10.0-11.0) | (11.0-12.0) | (11.0-12.0) | (11.0-13.0) |
| μr/Recoil | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | |
| Permeability                         |  (μ H/M) | |||||||||||
|          | (%/ ºC ) | -0.11 | -0.11 | -0.11 | -0.11 | -0.11 | -0.10 | -0.10 | -0.10 | -0.10 | -0.12 | -0.12 |
| Tempetrature Coefficient | ||||||||||||
| Tc                    | (ºC) | 300 | 300 | 300 | 300 | 350 | 350 | 350 | 350 | 350 | 320 | 320 |
| Curie Temperature | ||||||||||||
|                  | (ºC) | 160 | 160 | 160 | 160 | 160 | 180 | 160 | 160 | 160 | 150 | 150 |
| Max.Operating Temperature | ||||||||||||
| Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â | (KA/m) | >1600 | >1600 | >1600 | >1600 | >1600 | >3000 | >1600 | >1600 | >1600 | >1600 | >1600 |
| Magnetizing Force              |  (KOe) | >20 | >20 | >20 | >20 | >20 | >25 | >20 | >20 | >20 | >20 | >20 |
| ÏÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â | (g/m3) | 4.5-5.0 | 5.0-5.5 | 5.5-6.0 | 5.8-6.0 | 5.8-6.1 | 5.8-6.1 | 5.8-6.1 | 6.0-6.3 | 6.0-6.3 | 6.0-6.3 | 6.1-6.4 |
| Dendity | ||||||||||||
| Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â | HRB | 40-45 | 40-45 | 40-45 | 35-38 | 35-38 | 35-38 | 35-38 | 35-38 | 35-38 | 35-38 | 35-38 |
| Hardness | ||||||||||||
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