magnetic powder production line
PRODUCTS CATALOG
Magnetic powder:
Flexible magnets:

magnetic ferrite powder for dry press Unimagnet provides UMDF series sintered magnetic powder for dry pressing purpose. According to finished magnet orientation direction, there are two kinds of sintered magnetic powders: Anisotropic ferrite and isotropic ferrite.

Anisotropic ferrite magnetic powder is used in manufacturing sintered ferrite magnets of medium energy. Typical applications includes medium and lower class micro-motor and holding devices. Compared with Anisotropic ferrite powder, the isotropic ferrite magnetic powder is suitable for manufacturing sintered ferrite magnets with lower energy product. Typical applications includes lower class micro-motor and advertisement, stationery etc.

Fluidity as an important factor of ferrite magnetic powder affects compactedness and padding speed in moulds. Inferior compactedness will directly have bad influence upon density and quality of finished products. Ferrite magnetic powder for dry pressing should have better fluidity. Unimagnet adopts classified grinding technology in pelletizing procedure, the granularity distribution is limited between 0.14 and 0.16 micron, which insures coherence of particle size and improves fluidity of ferrite powder.

Typical products of sintered ferrite power

Grade

Magnetic characteristics

Shrink Rate%

Fine powder (μm)

Moisture
≤%

Remark

Br(mT)

HCB(KA/m)

HCJ(KA/m)

(B·H)max (KJ/m3)

UMDF-1(Ba)

195±5

123±4

215±4

5.6±0.4

15.0±1.0

0.80-0.90

≤0.5

Isotropy

200±5

127±4

239±4

6.0±0.4

15.0±1.0

0.80-0.90

≤0.5

UMDF-1A(Ba)

215±5

135±4

255±4

7.6±0.4

15.0±1.0

0.80-0.90

≤0.5

225±5

143±4

215±4

8.0±0.4

15.0±1.0

0.80-0.90

≤0.5

UMDF-1B(Ba)

230±5

143±4

255±4

8.4±0.4

15.0±1.0

0.80-0.90

≤0.5

235±5

147±4

239±4

8.8±0.4

15.0±1.0

0.80-0.90

≤0.5

UMDF-2(Sr)

210±5

150±4

350±4

9.0±0.4

15.0±1.0

0.85±0.05

≤0.5

An-isotropy

230±5

150±4

240±4

9.5±0.4

15.0±1.0

0.85±0.05

≤0.5

230±5

151±4

254±4

9.5±0.4

15.0±1.0

0.85±0.05

≤0.5

230±5

155±4

278±4

9.6±0.4

15.0±1.0

0.85±0.05

≤0.5

UMDF-3(Sr)

320±5

239±4

318±8

19.1±0.4

15.0±1.0

0.85±0.05

≤0.5

UMDF-3A(Sr)

340±5

255±4

279±8

21.5±0.4

15.0±1.0

0.85±0.05

≤0.5

UMDF-3B(Sr)

360±5

223±4

239±8

24.0±0.4

15.0±1.0

0.85±0.05

≤0.5

UMDF-3C(Sr)

380±5

183±4

199±8

27.1±0.4

15.0±1.0

0.85±0.05

≤0.5

UMDF-4(Sr)

320±5

239±4

398±8

19.1±0.4

15.0±1.0

0.85±0.05

≤0.5

UMDF-4A(Sr)

340±5

255±4

342±8

21.5±0.4

15.0±1.0

0.85±0.05

≤0.5

UMDF-4B(Sr)

360±5

263±4

302±8

24.1±0.4

15.0±1.0

0.85±0.05

≤0.5

UMDF-5(Sr)

375±5

254±4

270±8

26.0±1.0

15.0±1.0

0.85±0.05

≤0.5

UMDF-6(Sr)

380±5

233±4

239±8

27.1±1.0

15.0±1.0

0.85±0.05

≤0.5

UMDF-6A(Sr)

385±5

219±4

231±8

26.2±1.0

15.0±1.0

0.85±0.05

≤0.5

UMDF-6B(Sr)

395±5

235±4

239±8

28.0±1.0

15.0±1.0

0.85±0.05

≤0.5

UMDF-7(Sr)

400±5

191±4

199±8

30.2±1.0

15.0±1.0

0.90-1.00

≤0.5

Remark

1. Ba--Barium ferrite powder    Sr--Strontium ferrite powder

2. Custom-build specs is welcomed.