Chongqing Great Wall Technology Co., Ltd. is one of the leading manufacturers and suppliers of bonded neodymium arc magnet in China, also supports customized service. Welcome to wholesale high quality bonded neodymium arc magnet for sale here from our factory.
Compression bonded neodymium magnets are an excellent choice over other magnet types (sintered neodymium magnets, sintered samarium cobalt magnets, and hard ferrite magnets) that have limits to some shapes that compression bonded magnets do not have.
With their high energy product reaching up to 12 MGOe, it makes them ideal for many applications with high magnetic strength and tight tolerances. As no magnetic field is applied during the compression, the finished product can be magnetized in any direction. Having epoxy as a binder in the manufacturing process for compression bonded magnets makes the magnets resistant to most industrial automotive fluids. With relative low mold cost and quick turnaround, compression bonded neodymium magnets are the choice for a wide variety of applications. The final product can be epoxy coated for durability and more resistant to corrosion.
Manufacturing
Bonded Neodymium Arc magnets are manufactured through the compression process. This process involves mixing neodymium powder with epoxy as a binder and pressing it into a die cavity with no magnetic field, thus making these magnets isotropic. Pressed parts are then placed into the oven for curing.
Advantages of Bonded Neodymium Magnets
1) High dimensional precision: it typically doesn't need mechanical processing and can satisfy accuracy standards in a single molding;
2) The product's shape can be freely formed into a variety of shapes, including rings, cylinders, discs, tiles, and blocks;
3) Outstanding magnetic performance: Anisotropic ferrite's BH(max) is tripled. The product has a high inherent coercivity, a short procedure, and steady batch production performance;
4) Flexible magnetic orientation: spokewise, axial, radial, and skew magnetization, among others;
5) Excellent surface quality and good corrosion resistance: Epoxy resin, which has exceptional corrosion resistance, is applied to the bonded neodymium arc magnet's surface.
Magnetic Properties of Bonded NdFeb Magnet
|
Grade |
TN-1 |
TN-2 |
TN-3 |
TN-4 |
TN-5 |
TN-6 |
TN-7 |
TN-7H |
TN-8 |
TN-8H |
TN-9 |
TN-10 |
TN-10H |
TN-11 |
TN-12 |
|
|
Residual Magnetic induction |
(mT) |
290-340 |
380-420 |
380-420 |
460-500 |
480-530 |
530-580 |
610-650 |
590-630 |
630-680 |
600-660 |
650-690 |
670-710 |
640-680 |
690-730 |
700-740 |
|
(KGs) |
2.9-3.4 |
3.8-4.2 |
3.8-4.2 |
4.6-5.0 |
4.8-5.3 |
5.3-5.8 |
6.1-6.5 |
5.9-6.3 |
6.3-6.8 |
6.0-6.6 |
6.5-6.9 |
6.7-7.1 |
6.4-6.8 |
6.9-7.3 |
7.0-7.4 |
|
|
Coercivity |
(KA/m) |
150-200 |
180-240 |
205-255 |
230-290 |
255-320 |
295-350 |
350-415 |
390-440 |
400-440 |
380-435 |
395-440 |
410-455 |
435-480 |
420-475 |
435-495 |
|
(KOe) |
1.9-2.5 |
2.3-3.0 |
2.6-3.2 |
2.9-3.6 |
3.2-4.0 |
3.7-4.4 |
4.4-5.2 |
4.9-5.5 |
5.0-5.5 |
4.8-5.4 |
5.0-5.5 |
5.2-5.7 |
5.5-6.0 |
5.3-5.9 |
5.5-6.2 |
|
|
Intrinsic Coercivity Force |
(KA/m) |
325-375 |
330-385 |
540-585 |
580-630 |
590-640 |
605-655 |
620-680 |
1035-1120 |
675-755 |
800-960 |
675-755 |
675-760 |
940-1025 |
675-760 |
690-815 |
|
(KOe) |
4.1-4.7 |
4.2-4.8 |
6.8-7.3 |
7.3-7.9 |
7.4-8.0 |
7.6-8.2 |
7.8-8.5 |
13-14 |
8.5-9.4 |
10.0-12.0 |
8.5-9.4 |
8.5-9.5 |
11.8-12.8 |
8.5-9.5 |
8.7-10.2 |
|
|
Maximum Energy Product |
(KJ/m³) |
14-18 |
20-24 |
25-29 |
31-35 |
39-43 |
46-50 |
60-65 |
58-63 |
66-70 |
62-66 |
69-73 |
72-76 |
70-75 |
78-82 |
82-86 |
|
(MGOe) |
1.8-2.2 |
2.5-2.9 |
3.2-3.6 |
3.9-4.4 |
4.9-5.4 |
5.9-6.3 |
7.6-8.1 |
7.3-7.9 |
8.3-8.7 |
7.8-8.2 |
8.7-9.1 |
9.1-9.5 |
8.9-9.3 |
9.9-10.3 |
10.3-10.7 |
|
|
Average Reversible Temperature Coefficient |
(%/℃) |
-0.11 |
-0.11 |
-0.1 |
-0.1 |
-0.11 |
-0.11 |
-0.12 |
-0.1 |
-0.12 |
-0.1 |
-0.12 |
-0.12 |
-0.1 |
-0.12 |
-0.12 |
|
Saturation Magnetization Field |
KA/m |
≥1600 |
≥1600 |
≥1600 |
≥1600 |
≥1600 |
≥1600 |
≥1600 |
≥2000 |
≥1600 |
≥2000 |
≥1600 |
≥1600 |
≥2000 |
≥1600 |
≥1600 |
|
KOe |
≥20 |
≥20 |
≥20 |
≥20 |
≥20 |
≥20 |
≥20 |
≥25 |
≥20 |
≥25 |
≥20 |
≥20 |
≥25 |
≥20 |
≥20 |
|
|
Maximum Working Temperature |
(℃) |
160 |
160 |
180 |
180 |
160 |
160 |
160 |
180 |
160 |
180 |
160 |
160 |
180 |
160 |
160 |
|
Density |
(g/cm³) |
5.1-5.3 |
5.4-5.6 |
4.8-5.0 |
5.1-5.3 |
5.4-5.6 |
5.7-5.9 |
5.9-6.1 |
5.9-6.1 |
5.9-6.1 |
5.9-6.1 |
5.9-6.1 |
5.9-6.1 |
5.9-6.1 |
5.9-6.1 |
5.9-6.1 |
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