Hello, welcome ShenZhen HongMing Magnetic industry Co.,LTD.


ShenZhen HongMing Magnetic industry Co.,LTD

Web site: www.szhmmag.com

Contact person: ms. Huang

Mail editor: 518103

Hand machine: +8613823610634

Machine: 0755-33888108

The true:0755-33523180

Q Q: 2300318916

Mail box: szhmmag@163.com

Address: Goldman Sachs No. 18, No. 18, Sha Jing Center Road, Baoan District, Shenzhen, Guangdong

Home » Product display » Ndfeb series » circular
circular
Authors:handler Time:2017-07-07 02-42-02

The third generation rare earth permanent magnet neodymium iron boron is the most powerful permanent magnet in the present era. The BHmax value is 5-12 times of ferrite magnet, AlNiCo magnets 3-10 times; the coercivity equivalent to 5-10 times the ferrite magnet, AlNiCo magnets 5-15 times, its potential for magnetic to high and can suck up equivalent to 640 times its own weight weight.
As a result of the neodymium iron boron magnet iron as the main raw material is very cheap, neodymium rare earth reserves than SM 10-16 times more, so the price also is SmCo magnets much lower.
Mechanical properties of the neodymium iron boron magnet is better than SmCo magnet, alnico magnet, easier cutting and drilling and processing of complex shape.
The deficiency of the neodymium iron boron magnet is its poor temperature performance, high magnetic loss at high temperature, the maximum operating temperature is low. Generally about 80 degrees Celsius, after special treatment of magnets, the maximum operating temperature of up to 200 degrees celsius. Because the material contains a large number of neodymium and iron, it is easy to rust is one of its major weakness. So the neodymium iron boron magnet must be coated on the surface. Nickel (Ni), zinc (Zn), gold (Au), chromium (Cr), epoxy resin (Epoxy), etc..
Neodymium iron boron magnet is widely used in industrial aerospace, electronics, mechanical and electrical, instrumentation, medical and other fields. And the use of non technology areas are also more and more widely, such as the adsorption of magnets, toys, jewelry, etc..
Production flow:
Proportioning, smelting, ingot, powder milling, pressing, sintering and tempering, magnetic testing, milling, machining, plating
Finished product. Among the ingredients is the foundation, sintering and tempering is the key.
Neodymium iron boron magnet blank production tools and performance testing tool: a smelting furnace, swing belt furnace, jaw crusher machine and jet mill, pressing molding machine, vacuum packaging machine, static press and sintering furnace, heat treatment furnace, vacuum, magnetic can test instrument, a Gauss meter.
Neodymium iron boron magnet machine tool: centerless grinding, spheronization machine, double end grinding, flat grinding, slicing machine, double-sided grinding, cutting lines, Taizuan, abnormity mill, and so on.

number

Br

Hcb

Hcj

(BH)max

TW

T

KGs

KA/m

KOe

KA/m

KOe

KJ/m3

MGOe

°C

N35

1.17-1.21

11.7-12.1

876-899

11.0-11.3

≥955

≥12

263-279

33-35

≤80

N38

1.22-1.26

12.2-12.6

876-923

11.0-11.6

≥955

≥12

287-303

36-38

≤80

N40

1.26-1.29

12.6-12.9

876-923

11.0-11.6

≥955

≥12

303-318

38-40

≤80

N42

1.30-1.33

13.0-13.3

876-926

11.0-11.6

≥955

≥12

318-334

40-42

≤80

N45

1.33-1.37

13.3-13.7

876-926

11.0-11.6

≥955

≥12

342-358

43-45

≤80

N48

1.36-1.42

13.6-14.2

876-926

11.0-11.6

≥955

≥12

358-382

45-48

≤80

N50

1.41-1.45

14.1-14.5

828-907

10.4-11.4

≥876

≥11

382-398

48-50

≤70

N52

1.44-1.48

14.4-14.8

828-907

10.4-11.4

≥876

≥11

394-414

49.5-52

≤70

N35M

1.17-1.21

11.7-12.1

892-915

11.2-11.5

≥1114

≥14

263-279

33-35

≤100

N38M

1.22-1.26

12.2-12.6

907-931

11.4-11.7

≥1114

≥14

287-303

36-38

≤100

N40M

1.26-1.29

12.6-12.9

907-947

11.4-11.9

≥1114

≥14

303-318

38-40

≤100

N42M

1.30-1.33

13.0-13.3

907-947

11.4-11.9

≥1114

≥14

318-334

40-42

≤100

N45M

1.33-1.37

13.3-13.7

907-955

11.4-12.0

≥1114

≥14

334-358

42-45

≤100

N48M

1.36-1.42

13.6-14.2

907-955

11.4-12.0

≥1114

≥14

358-382

45-48

≤100

N50M

1.41-1.45

14.1-14.5

907-971

11.4-12.2

≥1114

≥14

382-398

48-50

≤100

N33H

1.14-1.17

11.4-11.7

820-876

10.3-11.0

≥1353

≥17

247-263

31-33

≤120

N35H

1.17-1.21

11.7-12.1

860-907

10.8-11.4

≥1353

≥17

263-279

33-35

≤120

N38H

1.22-1.26

12.2-12.6

907-947

11.4-11.9

≥1353

≥17

287-303

36-38

≤120

N40H

1.26-1.29

12.6-12.9

907-947

11.4-11.9

≥1353

≥17

303-318

38-40

≤120

N42H

1.30-1.33

13.0-13.3

907-947

11.4-11.9

≥1353

≥17

318-334

40-42

≤120

N45H

1.33-1.37

13.3-13.7

907-947

11.4-11.9

≥1353

≥17

342-358

43-45

≤120

N48H

1.36-1.42

13.6-14.2

907-971

11.4-12.2

≥1274

≥16

358-382

45-48

≤110

N30SH

1.08-1.12

10.8-11.2

804-844

10.1-10.6

≥1592

≥20

223-239

28-30

≤150

N33SH

1.14-1.17

11.4-11.7

820-876

10.3-11.0

≥1592

≥20

247-263

31-33

≤150

N35SH

1.17-1.21

11.7-12.1

860-907

10.8-11.4

≥1592

≥20

263-279

33-35

≤150

N38SH

1.22-1.26

12.2-12.6

907-947

11.4-11.9

≥1592

≥20

287-303

36-38

≤150

N40SH

1.26-1.29

12.6-12.9

907-947

11.4-11.9

≥1592

≥20

303-318

38-40

≤150

N42SH

1.30-1.33

13.0-13.3

907-947

11.4-11.9

≥1592

≥20

318-334

40-42

≤150

N45SH

1.33-1.37

13.3-13.7

907-947

11.4-11.9

≥1512

≥19

342-358

43-45

≤140

N28UH

1.04-1.08

10.4-10.8

780-812

9.8-10.2

≥1990

≥25

207-223

26-28

≤180

N30UH

1.08-1.12

10.8-11.2

804-844

10.1-10.6

≥1990

≥25

223-239

28-30

≤180

N33UH

1.14-1.17

11.4-11.7

820-876

10.3-11.0

≥1990

≥25

247-263

31-33

≤180

N35UH

1.17-1.21

11.7-12.1

860-907

10.8-11.4

≥1990

≥25

263-279

33-35

≤180

N38UH

1.22-1.26

12.2-12.6

907-947

11.4-11.9

≥1990

≥25

287-303

36-38

≤180

N40UH

1.26-1.29

12.6-12.9

907-947

11.4-11.9

≥1990

≥25

303-318

38-40

≤180

N28EH

1.04-1.08

10.4-10.8

780-812

9.8-10.2

≥2388

≥30

207-223

26-28

≤200

N30EH

1.08-1.12

10.8-11.2

804-844

10.1-10.6

≥2388

≥30

223-239

28-30

≤200

N33EH

1.14-1.17

11.4-11.7

820-876

10.3-11.0

≥2388

≥30

247-263

31-33

≤200

N35EH

1.17-1.21

11.7-12.1

860-907

10.8-11.4

≥2388

≥30

263-279

33-35

≤200

N38EH

1.22-1.26

12.2-12.6

860-907

10.8-11.4

≥2388

≥30

287-303

36-38

≤200

N30AH

1.08-1.12

10.8-11.2

804-844

10.1-10.6

≥2786

≥35

223-239

28-30

≤240

Note: Working temperature is tested under 20°C±2°C, the inevitable loss of magnetic force is no more than 5%.

 

 Typical physical properties

 Parameter

 Unit

 Standard Data

(Tc)                     Curie Temperature

°C

310-380

(Tw)    Maximum Operating Temperature

°C

80-200

                                   Hardness

Hv

620

(r)                      Electrical Resistivity

WNaN

1.8x10-4-2.0x10-4

(D)                                  Density

g/cm3

7.50-7.65

(m rec)                Recoil Permeability

1.05

(Hs)           Magnetization Field Strength

Koe

≥30

KA/m

≥2400

                         Bending Strength

Mpa

295-345

(aBr)           Temp.Coefficient of Br

%/°C

-0.11~-0.12

(aHcj)    Temp.Coefficient of Hcj

%/°C

-0.5~-0.7

 

 Dimension Range

 Block

 Length

 Width

Thickness

 Maximum

250.00mm

180.00mm

50.00mm

Minimum

2.60mm

1.80mm

0.50mm

 Ring

 Outer Dia

 Inner Dia

Thickness

Maximum

220.00mm

80.00mm

50.00mm

Minimum

2.00mm

1.50mm

0.50mm

Disc

Outer Dia

Thickness

Maximum

220.00mm

50.00mm

Minimum

1.00mm

0.50mm

 Note three of the above dimensions, can only produce one or two of the largest size, and other special shapes can be produced according to customer samples or drawings.

In the previous:Black
The next article:punching