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NdFeB magnets -The Strongest Permanent Magnets Today
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NdFeB(Neodymium-Iron-Boron)
magnet is used most popular by people in industry and our daily life, because
it has superior magnetic properties than other kind of magnets. The outstanding
characteristics are as follows-------- *Higher unit magnetic properties than
other magnet and assure you of smaller size and lighter weight in designing
devices. *Being mostly an iron based alloy, NdFeB type rare earth magnet is
much more prone to surface oxidation or rust. To eliminate such a problem, the
user should consider magnet coating, plating, or suitable surface treatment.
*Being less prone to chipping during handing *Lower temperature coefficient
of magnetic properties than ceramic but higher than SmCo type rare earth magnet.
Therefore, this NdFeB type rare earth magnet will suffer irreversible loss at
high temperature. |
| in a wide range of industries including computer, automobile, electric machinary, electro-sound devices, automatic control, magnetic force mechanism, microwave commnication, petrochemical industry, medical apparatus and equipment. The magnets are the ideal materials for the subminiature magnetic devices with high function.NdFeB magnets is especially suitable for developing those new products demanding high quality, small volume and light weight. | |
| Surface Treatment Method: |
| Type | Information |
| Metallic | Zinc,Nickel,Nickel+Nickel,Copper+Nickel,Nickel+Copper+Nickel,Gold |
| Organic | Epoxy,Nickel+Epoxy coating |
| Temporary | Surface Pssivation |
Produce
Flow Chart:
MAGNETIC AND PHYSICAL CHARACTERISTICS (NdFeB):
|
TYPE |
Remanence
Br |
Coercivforce
bHc |
Intrinsic
coercive force iHc |
Max.
energy product (BH) max |
Working
Temperature |
||||
|
KGs |
T |
KOe |
KA/m |
KOe |
KA/m |
MGOe |
KJ/m3 |
0C |
|
|
3
N-35 |
11.7-12.1 |
1.77-12.1 |
10.8-11.5 |
860-915 |
=12 |
=955 |
33-35 |
263-279 |
=80 |
|
4
N-36 |
11.9-12.2 |
1.19-1.22 |
11.0-11.4 |
876-907 |
=12 |
=955 |
34-36 |
271-287 |
=80 |
|
5
N-38 |
12.4-12.6 |
1.24-1.26 |
11.4-11.5 |
907-915 |
=12 |
=955 |
37-38 |
295-303 |
=80 |
|
6
N-40 |
12.7-12.9 |
1.27-1.29 |
10.5-11.0 |
915-923 |
=12 |
=955 |
39-40 |
310-318 |
=80 |
|
7
N-42 |
13.0-13.3 |
1.30-1.33 |
10.0-10.5 |
796-836 |
=12 |
=955 |
40-42 |
318-334 |
=80 |
|
8
N-43 |
13.0-13.3 |
1.30-1.33 |
10.5-11.0 |
836-876 |
=12 |
=955 |
41-43 |
326-342 |
=80 |
|
9
N-45 |
13.3-13.7 |
1.33-1.37 |
10.5-11.0 |
836-876 |
=12 |
=965 |
43-45 |
358-342 |
=80 |
|
10
N-48 |
13.7-14.0 |
1.37-1.40 |
10.5-11.0 |
836-876 |
=12 |
=965 |
47-51 |
374-390 |
=80 |
|
11
N-50 |
14.0-14.6 |
1.40-1.46 |
10.5-11.0 |
836-876 |
=12 |
=965 |
47-51 |
358-390 |
=80 |
|
12
N-27M |
10.2-10.6 |
1.02-1.06 |
9.6-10.1 |
764-804 |
=15 |
=1194 |
25-27 |
199-215 |
=100 |
|
13
N-30M |
10.8-11.2 |
1.08-1.12 |
10.1-10.6 |
804-844 |
=15 |
=1194 |
28-30 |
223-239 |
=100 |
|
14
N-33M |
11.4-11.7 |
1.14-1.17 |
10.5-11.1 |
844-884 |
=15 |
=1194 |
31-33 |
247-263 |
=100 |
|
15
N-35M |
11.7-12.1 |
1.17-1.21 |
10.8-11.5 |
860-915 |
=15 |
=1114 |
33-35 |
263-279 |
=100 |
|
16
N-36M |
11.9-12.2 |
1.19-1.22 |
11.1-11.6 |
884-923 |
=15 |
=1194 |
34-36 |
271-287 |
=100 |
|
17
N-38M |
12.2-12.6 |
1.22-1.26 |
10.8-11.5 |
860-915 |
=14 |
=1114 |
36-38 |
287-303 |
=100 |
|
18
N-40M |
12.6-12.9 |
1.26-1.29 |
10.8-11.5 |
860-915 |
=14 |
=1114 |
38-40 |
303-318 |
=100 |
|
19
N-42M |
13.0-13.3 |
1.30-1.33 |
10.8-11.4 |
860-907 |
=14 |
=1114 |
40-42 |
318-334 |
=100 |
|
20
N45M |
13.3-13.7 |
1.33-1.37 |
10.8-11.4 |
860-907 |
=17 |
=1114 |
43-45 |
334-358 |
=100 |
|
21
N-27H |
10.2-10.6 |
1.02-1.06 |
9.6-10.1 |
764-804 |
=17 |
=1353 |
25-27 |
199-215 |
=120 |
|
22N-30H |
10.8-11.2 |
1.08-1.12 |
10.1-10.6 |
804-844 |
=17 |
=1353 |
8-30 |
223-239 |
=120 |
|
23
N-33H |
11.4-11.7 |
1.14-1.17 |
10.6-11.1 |
844-884 |
=17 |
=1353 |
31-33 |
247-263 |
=120 |
|
24
N-35H |
11.7-12.1 |
1.17-1.21 |
10.8-11.5 |
860-915 |
=17 |
=1353 |
33-35 |
263-279 |
=120 |
|
25
N-36H |
11.9-12.2 |
1.19-1.22 |
11.1-11.6 |
884-923 |
=17 |
=1353 |
34-36 |
271-287 |
=120 |
|
26
N-38H |
12.2-12.6 |
1.22-1.26 |
11.5-12.0 |
915-955 |
=17 |
=1353 |
30-36 |
287-303 |
=120 |
|
27
N-40H |
12.6-12.9 |
1.26-1.29 |
11.5-12.0 |
915-955 |
=17 |
=1353 |
38-40 |
303-318 |
=120 |
|
28N-27SH |
10.2-10.6 |
1.02-1.06 |
9.6-10.1 |
764-804 |
=20 |
=1592 |
25-27 |
199-215 |
=150 |
|
29N-30SH |
10.8-11.2 |
1.08-1.12 |
10.1-10.6 |
804-844 |
=20 |
=1592 |
28-30 |
223-239 |
=150 |
|
30N-33SH |
11.4-11.7 |
11.4-11.7 |
10.6-11.1 |
844-884 |
=20 |
=1592 |
31-33 |
247-263 |
=150 |
|
31N-35SH |
11.7-12.1 |
1.17-1.21 |
10.8-11.5 |
860-915 |
=20 |
=1595 |
33-35 |
263-279 |
=150 |
|
32N-38SH |
12.1-12.5 |
1.21-1.25 |
10.8-11.5 |
860-915 |
=20 |
=1592 |
36-38 |
287-302 |
=150 |
|
31N25UH |
9.8-10.2 |
0.98-1.02 |
9.2-9.6 |
732-764 |
=25 |
=1990 |
23-25 |
183-199 |
=180 |
|
32N28UH |
10.4-10.8 |
1.04-1.08 |
9.8-10.2 |
780-812 |
=25 |
=1990 |
26-28 |
207-223 |
=180 |
|
33N30UH |
10.8-11.2 |
1.08-1.12 |
10.1-10.6 |
804-844 |
=25 |
=1990 |
28-30 |
223-239 |
=180 |
|
34N35UH |
11.7-12.1 |
1.17-1.21 |
10.5-11.2 |
836-890 |
=25 |
=1989 |
33-35 |
263-278 |
=180 |
|
35N38UH |
12.2-12.6 |
1.22-1.26 |
11.7-12.0 |
930-955 |
=25 |
=1989 |
33-38 |
280-302 |
=180 |
|
36N30EH |
10.8-11.2 |
1.08-1.12 |
10.1-10.6 |
804-844 |
=30 |
=2229 |
28-30 |
223-239 |
=200 |
|
37N33EH |
11.4-11.7 |
1.14-1.17 |
10.4-11.0 |
844-876 |
=30 |
=2229 |
30-33 |
247-263 |
=200 |
|
38N35EH |
11.7-12.1 |
1.17-1.21 |
10.8-11.5 |
860-915 |
=30 |
=2229 |
33-35 |
263-279 |
=200 |
QUALITY
CONTROL AND PROCESS:
Quality test: Salt-Spray test
/Magnetic Flux test/ Coating layer thickness test/ Magnetic Properties tes
| NO | PROCESS NAM |
EQUIPMENT | CONTROL POINT | CONTROL METHOD | ||||
| ITEMS FOR INSPECTION | STANDARD | PREQUENCY | INSTRUMENT USED | RECORD DOCUMENT | IN-CHARGE | |||
| 1 | Purchase Raw Material |
1.Name,Amount,Order No, 2.Composition , Appearance |
Purchase Document Inspection Standard |
ALL 2Pcs Per Load |
Visual ICP or Chamical Analyse |
Material Inspection Sheet | Technician | |
| 2 | Burden | Electric Balance | 1.Weight 2.Appearance |
Burden Production Guide | ALL ALL |
Electric Balance Visual | Burden Record | Opreator |
| 3 | Melting | Vacuum Mclting Furnace | 1.Powder Size 2.Oxygen Conteat |
Inspection Standard | Ipcs/Furnace/week ALL |
Icp or Chamical Visual |
Inspection Sheet Quality Record |
Technician |
| 4 | Smash & let Milling |
Smash Machine Let Mill |
1.Powder Size 2.Oxygen Conten |
Milling Production Guide | ITimes/Day/Machine Per Load |
FSSS Oxygen Determinator |
Powder Size Record | Technician Technician |
| 5 | Pressing | Press |
1.Heigh 2.Press 3.Weight |
Pressing Production Guide |
5% Per Load ALL ALL |
Callipers Press Meter Balance |
Produce process Sheet(3) | Opreator |
| 6 | Sintering&Tempering |
Vacuum Furnace | 1.Sintering time 2.Sintering Temperature |
Sintering &Tempering Production Guide |
Per Furnace | Vacumn Furnace | Produce process Sheet(3) | Operator |
| 7 | Inspection | B-H Curves Measurement Magnetizer |
1.Br,JHc,(BH)max 2.Magnetic Property 3.De-Magnetiz Volt 4.Appearance |
Company Standard Inspection Standard |
SPcs Per Load I[/AQL=0.1 I[/AQL=0.1 ALL |
SPcs Per Load I[/AQL=0.1 I[/AQL=0.1 ALL |
Stntering Produce Test Sheet |
inspection |
| 8 | Mashining | Grinder slicer Electric Spark Machining Magactizer |
1.Dimentions
2.Appearance tolerance 3.orientation 4.Magnetic property 5.Appearance |
Inspection Standard |
II[/AQL=0.1 III/AQL=0.1 III S-4/AQL=0.1 III/AQL=0.1 |
Callipers Callipers Magneted Material Gaussmeter or Fluxmeter Visual |
Produce Inspection sheet | Inspection |
| 9 | Plating | Plating Vat | 1.After Plating Dimensions 2.Appearance 3.Plating Tickness |
Inspection Standard | S-4/AQL=0.1 S-4/AQL=0.1 5Pcs Per Load |
Callipers Visual Thickness Determinator |
Produce Inspection sheet Thickness Record |
Inspection Technician |
| 10 | Final Inspection |
Magaetizer | 1.Dimentions 2.Apperarance Tolerances 3.Orientatioa 4.Megnetic property 5.Appearance |
Inspection Standard | II/AQL=0.1 S-4/AQL=0.1 S-4 S-4/AQL=0.1 ALL |
Callipers Callipers Magneted Material Oaussmeler or Fluxmeter Visual |
Final Inspection Record | Inspection |
| 11 | Packing | Packer | 1.Quantity 2.Label |
Inspection Standard | ALL ALL |
Visual Visua |
Enter Store Sheet | Opreator |
| Home | Contact Us | Hard Ferrite | Ferrite Cores | Bonded Plastic Injection | Flexible Rubber Magnet NdFeB Magnet Neodymium | Sm-Co Magnet | AINiCo Magnet | Magnetic Powder | Magnetic Assembly @Copy Right - AMC GROUP., All Right Reserved. Address: Tiyi Guoji Shangwu Zhongxin, No.19 Tian Bo Road, Gao Xin Qu, Hefei. Anhui Province. China. Zip:230088 Telephone:Sales Dept:+ 86 (0)551 5390114 5334828 email: magnet@vip.163.com or supply@china.com Quality Dept: +86(0)551 5390115 email: 58amc@163.com Logistical Dept: +86 (0)551 5230497 email: 28amc@163.com Technical Dept: +86(0)551 5230498 5390113 Fax: +86 (0)551 5334878 |
