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第三代稀土永磁钕铁硼是当代磁铁中性能最强的永磁铁。它的BHmax值是铁氧体磁铁的5-12倍,是铝镍钴磁铁的3-10倍;它的矫顽力相当于铁氧体磁铁的5-10倍,铝镍钴磁铁的5-15倍,其潜在的磁性能极高,能吸起相当于自身重量640倍的重物。 由于钕铁硼磁铁的主要原料铁非常便宜,稀土钕的储藏量较钐多10-16倍,故其价格也较钐钴磁铁低很多。 钕铁硼磁铁的机械性能比钐钴磁铁和铝镍钴磁铁都好,更易于切割和钻孔及复杂形状加工。 钕铁硼磁铁的不足之处是其温度性能不佳,在高温下使用磁损失较大,最高工作温度较低。一般为80摄氏度左右,在经过特殊处理的磁铁,其最高工作温度可达200摄氏度。 由于材料中含有大量的钕和铁,故容易锈蚀也是它的一大弱点。所以钕铁硼磁铁必须进行表面涂层处理。可电镀镍(Ni), 锌(Zn), 金(Au), 铬(Cr), 环氧树脂(Epoxy)等。 钕铁硼磁铁目前广泛应用于航空航天,电子,机电,仪器仪表,医疗等领域。而且非技术领域使用也越来越广泛,如吸附磁铁,玩具,首饰等。
生产流程: 配料---->熔炼---->制粉---->成型---->烧结---->测试---->机械加工---->电镀---->磁化---->检验---->包装
性能表:
|
No. |
Grade |
Remanence Br |
Coercive force bHc |
Intrinsic coercive force iHc |
Maximum energy product (BH)max |
Working temp |
|
KG |
T |
KOe |
KA/m |
KOe |
KA/m |
MGOe |
KJ/m3 |
°C |
|
Nom. |
Min. |
Nom. |
Min. |
Nom. |
Min. |
Nom. |
Min. |
Nom. |
Min. |
Nom. |
Min. |
|
1 |
N30 |
11.2 |
10.8 |
1.12 |
1.08 |
10.5 |
9.8 |
836 |
780 |
>= 12 |
>= 955 |
30 |
28 |
239 |
223 |
<= 80 |
|
2 |
N33 |
11.7 |
11.4 |
1.17 |
1.14 |
11.0 |
10.3 |
876 |
820 |
>= 12 |
>= 955 |
33 |
31 |
263 |
247 |
<= 80 |
|
3 |
N35 |
12.1 |
11.7 |
1.21 |
1.17 |
11.5 |
10.8 |
915 |
860 |
>= 12 |
>= 955 |
35 |
33 |
279 |
263 |
<= 80 |
|
4 |
N38 |
12.6 |
12.2 |
1.26 |
1.22 |
11.5 |
10.8 |
915 |
860 |
>= 12 |
>= 955 |
38 |
36 |
303 |
287 |
<= 80 |
|
5 |
N40 |
12.9 |
12.6 |
1.29 |
1.26 |
11.0 |
10.5 |
876 |
836 |
>= 12 |
>= 955 |
40 |
38 |
318 |
303 |
<= 80 |
|
6 |
N42 |
13.2 |
12.6 |
1.32 |
1.26 |
11.0 |
10.5 |
876 |
836 |
>= 12 |
>= 955 |
42 |
40 |
342 |
326 |
<= 80 |
|
7 |
N45 |
13.7 |
13.3 |
1.37 |
1.33 |
11.0 |
10.5 |
876 |
836 |
>= 12 |
>= 955 |
45 |
43 |
358 |
342 |
<= 80 |
|
8 |
N48 |
14.1 |
13.7 |
1.41 |
1.37 |
11.0 |
10.5 |
876 |
836 |
>= 12 |
>= 955 |
48 |
46 |
383 |
367 |
<= 80 |
|
9 |
N30M |
11.2 |
10.8 |
1.12 |
1.08 |
10.5 |
9.8 |
836 |
780 |
>= 14 |
>= 1114 |
30 |
28 |
239 |
223 |
<= 100 |
|
10 |
N33M |
11.7 |
11.4 |
1.17 |
1.14 |
11.0 |
10.3 |
876 |
820 |
>= 14 |
>= 1114 |
33 |
31 |
263 |
247 |
<= 100 |
|
11 |
N35M |
12.1 |
11.7 |
1.21 |
1.17 |
11.5 |
10.8 |
915 |
860 |
>= 14 |
>= 1114 |
35 |
33 |
279 |
263 |
<= 100 |
|
12 |
N38M |
12.6 |
12.2 |
1.26 |
1.22 |
11.5 |
10.8 |
915 |
860 |
>= 14 |
>= 1114 |
38 |
36 |
303 |
257 |
<= 100 |
|
13 |
N40M |
12.9 |
12.6 |
1.29 |
1.26 |
11.5 |
10.8 |
915 |
860 |
>= 14 |
>= 1114 |
40 |
38 |
318 |
303 |
<= 100 |
|
14 |
N42M |
13.2 |
12.9 |
1.32 |
1.29 |
11.0 |
10.5 |
876 |
836 |
>= 14 |
>= 1114 |
42 |
40 |
342 |
326 |
<= 100 |
|
15 |
N45M |
13.7 |
13.3 |
1.37 |
1.33 |
11.0 |
10.5 |
976 |
836 |
>= 14 |
>= 1114 |
45 |
43 |
358 |
342 |
<= 100 |
|
16 |
N48M |
14.1 |
13.7 |
1.41 |
1.37 |
11.0 |
10.5 |
876 |
836 |
>= 14 |
>= 1114 |
48 |
46 |
383 |
367 |
<= 100 |
|
17 |
N30H |
11.2 |
10.8 |
1.12 |
1.08 |
10.5 |
9.8 |
836 |
780 |
>= 17 |
>= 1353 |
30 |
28 |
239 |
223 |
<= 120 |
|
18 |
N33H |
11.7 |
11.4 |
1.17 |
1.14 |
11.0 |
10.3 |
876 |
820 |
>= 17 |
>= 1353 |
33 |
31 |
263 |
247 |
<= 120 |
|
19 |
N35H |
12.1 |
11.7 |
1.21 |
1.17 |
11.5 |
10.8 |
915 |
860 |
>= 17 |
>= 1353 |
35 |
33 |
279 |
263 |
<= 120 |
|
20 |
N40H |
12.9 |
12.6 |
1.29 |
1.26 |
12.0 |
11.5 |
955 |
915 |
>= 17 |
>= 1353 |
40 |
38 |
318 |
303 |
<= 120 |
|
21 |
N42H |
13.2 |
12.9 |
1.32 |
1.29 |
11.0 |
10.5 |
876 |
836 |
>= 17 |
>= 1353 |
42 |
40 |
342 |
326 |
<= 120 |
|
22 |
N45H |
13.7 |
13.3 |
1.37 |
1.33 |
11.0 |
10.5 |
876 |
836 |
>= 17 |
>= 1353 |
45 |
43 |
358 |
342 |
<= 120 |
|
23 |
N34AH |
11.6 |
11.0 |
1.16 |
1.10 |
11.3 |
10.5 |
900 |
836 |
>= 32 |
>= 2547 |
34 |
31 |
271 |
247 |
<= 240 |
|
24 |
N30SH |
11.2 |
10.8 |
1.12 |
1.08 |
10.5 |
9.8 |
836 |
780 |
>= 20 |
>= 1595 |
30 |
28 |
239 |
223 |
<= 150 |
|
25 |
N33SH |
11.7 |
11.4 |
1.17 |
1.14 |
11.0 |
10.3 |
876 |
820 |
>= 20 |
>= 1595 |
33 |
31 |
263 |
247 |
<= 150 |
|
26 |
N35SH |
12.1 |
11.7 |
1.21 |
1.17 |
11.5 |
10.8 |
915 |
860 |
>= 20 |
>= 1595 |
35 |
33 |
279 |
263 |
<= 150 |
|
27 |
N38SH |
12.6 |
12.2 |
1.26 |
1.22 |
12.3 |
11.8 |
979 |
939 |
>= 20 |
>= 1595 |
38 |
36 |
303 |
287 |
<= 150 |
|
28 |
N40SH |
12.9 |
12.6 |
1.29 |
1.26 |
12.6 |
|
| |
|
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