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Specifications of YX Wet pressing Strontium Ferrite Magnetic Materials
YXC series strontium Ferrite Magnetic powders have been designed to produce all grades of hard ferrites.The users will make high quality magnets by adding the provided additives into the powders.Our highly automatic instruments and strict quality control system ensure that the quality is stable and reliable.

 

 

 


a. Material Properties

Trade Mark
Material
Characteristics of products
Granularity
Forming methods
Br(mT)
bHc(kA/m)
ihc(kA/m)
(BH)max(kJ/m3)
SHR %
Pellets(mm)
Coarse Powder (m)
Fine powder
Min
Typical
Min
Typical
Min
Typical
Min
Typical
YXS-3
BaFe12O19
390
380
159
151
163
155
28.7
27.1
121
0.90-1.00
Anisotropic wet press
YXS-4B
SrFe12O19
410
400
191
175
199
183
31.8
30.2
131
0.80-0.90
YXS-4
SrFe12O19
390
380
231
215
239
223
28.7
27.1
131
6-12
3-6
0.80-0.90
YXS-4H
SrFe12O19
370
360
259
243
279
263
25.5
23.9
131
0.80-0.90
YXS-4E
SrFe12O19
350
340
259
243
318
294
23.1
21.5
12.51
0.80-0.90
YXS-5B
SrFe12O19
430
420
191
175
199
183
35.0
33.4
131
0.75-0.85
YXS-5
SrFe12O19
410
400
231
223
239
231
31.8
30.2
131
6-12
3-6
0.75-0.85
YXS-5H
SrFe12O19
390
380
283
267
302
279
28.7
27.1
131
6-12
3-6
0.75-0.85
YXS-5E
SrFe12O19
370
360
279
263
342
318
25.5
23.9
12.51
0.75-0.85
YXS-5U
SrFe12O19
350
340
263
247
398
374
23.1
21.5
12.51
0.75-0.85
YXS-6
SrFe12O19
410
400
271
255
279
263
31.8
30.2
12.51
0.70-0.80
YXS-6H
SrFe12O19
400
390
294
279
318
294
30.2
28.7
131
0.70-0.80

*The shrinkage rate on vertical direction is about 13¡À0.5%


2.In case that the granular material is pruchased from our company,the particle should be dry ground to 3-5¦Ìm at first,and then be wet ground in a sand grinding mill or ball mill to less than 1 ¦Ìm ,and then be wet pressed.If the coarse ground powder is bought,it can be wet ground directly.

  1. Before grinding,the grinding mill should be cleaned thoroughly.And any materials from other factories or Impurity should not be mixed into our material.
  2. Aloong with the powder (granular powder,and coarse ground powder),we provide the secondary additives in separated bags,users should only add it into powder during grinding according to the requirement.
  3. All the necessary secondary additives have been added into the fine powders(<1¦Ìm).So there is no need to add any other material,But two to three hours'wet grinding is necessary for better distribution of particles.
  4. During pressing,the moisture of slurry should be controlled between 32% to 37%,the pressure required is >4000N/cm2,and the magnetic field density is >560kA/m.
  5. Due to the actual sintering temperature measured by various suppliers' instruments are not the same,we can only provide sintering temperature of 1220°C-1270°C for reference.Please note that the proper sintering temperature should be defined in accordance with the status of the sintered sample pill.