Hangzhou Dowell Magnet Co., Limited
Products Category
CONTACT US

Name: Emily Yao
+86-571-87425955/87425230
+86-571-87425665
+86-13957145940
support@dowellmagnet.com
Add: 5/F, Building A, Fudi Yi Center, No. 1243 Mogan Road, Hangzhou, China
Dowellmagnet

Products > Neodymium Magnet

General Information 

       Neodymium permanent magnet material available in the early 1980s, is now widely used in motor (motor), speakers (speaker), toys (toys) and some electrical appliances (electron), and other products. Components for Nd2Fe14B. Have very high magnetic properties, the largest energy product (BHmax) higher than the ferrite 10 times more. Its own mechanical properties is also very good, cutting different shapes and bored. High-performance products of the highest temperature of up to 200 degrees Celsius. Because of its material content easily lead to corrosion, according to different requirements of different surface coating. (Such as plating Zn, Ni, Au, Epoxy, etc.)

       Third-generation rare earth permanent magnet of Neodymium magnets(NdFeB) is a contemporary of the strongest magnets in the permanent magnet, it is not only a high residual magnetism, high coercivity, high-energy product, such as high cost performance characteristics, and easy processing into the Sizes, it exert very high forces and can attract each other through large distances making them very popular. It iis now widely used in aviation, aerospace, electronics, electro-acoustic, mechanical and electrical, instruments, meters, antenna, medical technology and other devices needed Wing magnetic field equipment, especially for developing high-performance, small size, light And updating of the various products.
 

Advantages of our Neodymium Magnet: 

1. We are gradually improving and advanced the implementation of the "automatic scales casting - hydrogenation, steam-ground flour - the closure of pressure - for sintering" production methods.
2. Possession of advanced processing and production lines, all kinds of machines more than 3000 units to undertake various kinds of high-volume orders.
3. can be mass-produced ultra-small and very large magnet. If Φ1 mm or Φ180 mm, and so on.
4. have the most advanced surface treatment and plating production lines, chemical plating, electroplating, plating and organic compound phosphate spraying and treatment.
5. the use of advanced production technology of hypoxia excellent corrosion-resistant magnet production and mass production of high-performance NdFeB N45 above products. Mass production can supply sufficient magnetic radiation isotropic and anisotropy NdFeB magnetic ring.
6. based on the establishment of ISO quality system, and implementing the 6 sigma quality management thinking, and optimize the production process, reducing cost of the product.
7. advanced physics and chemistry laboratory and a strong R & D team as the production of high-performance, high-quality products strong guarantee.
8. a number of senior experts in related subjects in the research and production security, well-known research institutions and start cooperation on cross-cutting.

Magnetic characteristics:

Grades

  Remanence Br

Coercive Force Hcb

Intrinsic Coercivity Hcj

Maximum Energy Product (BH)max

Curie Temp. TC

Temp. Coefficient TW

 
 

T

KGs

KA/m

KOe

KA/m

Koe

KJ/m3

MGOe

 

N35

1.18-1.23

11.8-12.3

≥868

≥10.9

≥955

≥12

263-287

33-36

310

≤80

 

N38

1.22-1.28

12.2-12.8

≥899

≥11.3

≥955

≥12

287-310

36-39

310

≤80

 

N40

1.26-1.31

12.6-13.1

≥923

≥11.6

≥955

≥12

302-326

38-41

310

≤80

 

N42

1.28-1.34

12.8-13.4

≥923

≥11.6

≥955

≥12

318-342

40-43

310

≤80

 

N45

1.33-1.38

13.3-13.8

≥923

≥11.6

≥955

≥12

342-366

43-46

310

≤80

 

N48

1.38-1.42

13.8-14.2

≥923

≥11.6

≥955

≥12

358-390

45-48

310

≤80

 

N50

1.40-1.45

14.0-14.5

≥836

≥10.5

≥876

≥11

382-406

48-51

310

≤80

 

N52

1.43-1.48

14.3-14.8

≥796

≥10.0

≥876

≥11

398-422

50-53

310

≤80

 

N35M

1.17-1.22

11.7-12.2

≥868

≥10.9

≥1114

≥14

263-287

33-36

320

≤100

 

N38M

1.22-1.25

12.2-12.5

≥899

≥11.3

≥1114

≥14

287-310

36-39

320

≤100

 

N40M

1.25-1.28

12.5-12.8

≥923

≥11.6

≥1114

≥14

302-326

38-41

320

≤100

 

N42M

1.28-1.32

12.8-13.2

≥955

≥12.0

≥1114

≥14

318-342

40-43

320

≤100

 

N45M

1.32-1.38

13.2-13.8

≥995

≥12.5

≥1114

≥14

342-366

43-46

320

≤100

 

N48M

1.36-1.43

13.6-14.3

≥1027

≥12.9

≥1114

≥14

366-390

46-49

320

≤100

 

N50M

1.40-1.45

14.0-14.5

≥1033

≥13.0

≥1114

≥14

382-406

48-51

320

≤100

 

N33H

1.14-1.19

11.4-11.9

≥836

≥10.5

≥1353

≥17

247-270

31-34

330

≤120

 

N35H

1.17-1.22

11.7-12.2

≥868

≥10.9

≥1353

≥17

263-287

33-36

330

≤120

 

N38H

1.22-1.25

12.2-12.5

≥899

≥11.3

≥1353

≥17

287-310

36-39

330

≤120

 

N40H

1.25-1.28

12.5-12.8

≥923

≥11.6

≥1353

≥17

302-326

38-41

330

≤120

 

N42H

1.28-1.32

12.8-13.2

≥955

≥12.0

≥1353

≥17

318-342

40-43

330

≤120

 

N45H

1.30-1.36

13.0-13.6

≥963

≥12.1

≥1353

≥17

326-358

43-46

330

≤120

 

N48H

1.37-1.43

13.7-14.3

≥995

≥12.5

≥1353

≥17

366-390

46-49

330

≤120

 

N30SH

1.08-1.13

10.8-11.3

≥810

≥10.2

≥1592

≥20

223-247

28-31

340

≤150

 

N33SH

1.13-1.17

11.3-11.7

≥844

≥10.6

≥1592

≥20

247-271

31-34

340

≤150

 

N35SH

1.17-1.22

11.7-12.2

≥876

≥11.0

≥1592

≥20

263-287

33-36

340

≤150

 

N38SH

1.22-1.25

12.2-12.5

≥907

≥11.4

≥1592

≥20

287-310

36-39

340

≤150

 

N40SH

1.25-1.28

12.5-12.8

≥939

≥11.8

≥1592

≥20

302-326

38-41

340

≤150

 

N42SH

1.28-1.32

12.8-13.2

≥987

≥12.4

≥1592

≥20

318-342

40-43

340

≤150

 

N45SH

1.32-1.38

13.2-13.8

≥1003

≥12.6

≥1592

≥20

342-366

43-46

340

≤150

 

N28UH

1.02-1.08

10.2-10.8

≥764

≥9.60

≥1990

≥25

207-231

26-29

350

≤180

 

N30UH

1.08-1.13

10.8-11.3

≥812

≥10.2

≥1990

≥25

223-247

28-31

350

≤180

 

N33UH

1.13-1.17

11.3-11.7

≥852

≥10.7

≥1990

≥25

247-271

31-34

350

≤180

 

N35UH

1.18-1.22

11.8-12.2

≥860

≥10.8

≥1990

≥25

263-287

33-36

350

≤180

 

N38UH

1.22-1.25

12.2-12.5

≥876

≥11.0

≥1990

≥25

287-310

36-39

350

≤180

 

N40UH

1.25-1.28

12.5-12.8

≥899

≥11.3

≥1990

≥25

302-326

38-41

350

≤180

 

N28EH

1.04-1.09

10.4-10.9

≥780

≥9.80

≥2388

≥30

207-231

26-29

380

≤200

 

N30EH

1.08-1.13

10.8-11.3

≥812

≥10.2

≥2388

≥30

223-247

28-31

380

≤200

 

N33EH

1.13-1.17

11.3-11.7

≥836

≥10.5

≥2388

≥30

247-271

31-34

380

≤200

 

N35EH

1.17-1.22

11.7-12.2

≥876

≥11.0

≥2388

≥30

263-287

33-36

380

≤200

 

N38EH

1.22-1.29

12.2-12.9

≥915

≥11.5

≥2388

≥30

287-318

36-40

380

≤200

 

N30AH

1.08-1.15

10.8-11.5

≥804

≥10.1

≥2786

≥35

223-255

28-32

380

≤230

 

N33AH

1.14-1.21

11.4-12.1

≥852

≥10.7

≥2786

≥35

247-279

31-35

380

≤230

 
 

 

 

Production Chart of Sintered NdFeB:
 

Raw material →Mixing Vacuum → Melting Powder →Production →Cutting and Grinding →Testing →Vacuum Sintering →Molding →Surface Coating →Inspection →Packing →Shipping →After-sales Service 
 

 

Surface coating: 

Name White Zinc Colour Zinc Nickel ElectrolessNickel NiCuNi NiSn Epoxy Phosphating NiAu
Coating Thickness(μm) 8-15 10-15 20-30 20-30 15-30 20-30 10-30 1-3 10-20
Color Blue and white Multicolor Silver Silver Silver Silver Black Black Gold
PCT 3 3 1 1 2 2 2 3 2
Humidity Test 3 3 1 1 1 1 1 2 2
Salt Spray Test 3 2 3 1 2 2 1 3 2
Collision Test 2 2 1 1 1 1 1 3 1

  

 
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