Wet Pressing Ferrite Powder

YX Wet Pressing Strontium Ferrite Magnetic Powder Specifications

YX series wet pressing strontium ferrite magnetic powders have been designed to produce all grades of hard ferrites. The users can produce 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.

Material Properties

wet pressing strontium ferrite magnetic powder

Physical Characteristic

Trade Mark Material Characteristics of products Granularity Forming method
Br
(mT)
bHc
(kA/m)
iHc
(kA/m)
(BH)max
(kJ/m3)
SHR
%
Pellets
(mm)
Coarse Powder
(µm)
Fine Powder
(µm)
Min
Typical Min Typical Min Typical Min Typical
YXS-3 BaFe12O19 390 380 159 151 163 155 28.7 27.1 12±1 0.90 ~ 1.00 Anisotropic wet press
YXS-4B SrFe12O19 410 400 191 175 199 183 31.8 30.2 13±1 0.80 ~ 0.90
YXS-4 SrFe12O19 390 380 231 215 239 223 28.7 27.1 13±1 6 ~ 12 3 ~ 6 0.80 ~ 0.90
YXS-4H SrFe12O19 370 360 259 243 279 263 25.5 23.9 13±1 0.80 ~ 0.90
YXS-4E SrFe12O19 350 340 259 243 318 294 23.1 21.5 12.5±1 0.80 ~ 0.90
YXS-5B SrFe12O19 430 420 191 175 199 183 35.0 33.4 13±1 0.75 ~ 0.85
YXS-5 SrFe12O19 410 400 231 223 239 231 31.8 30.2 13±1 6 ~ 12 3 ~ 6 0.75 ~ 0.85
YXS-5H SrFe12O19 390 380 283 267 302 279 28.7 27.1 13±1 6 ~ 12 3 ~ 6 0.75 ~ 0.85
YXS-5E SrFe12O19 370 360 279 263 342 318 25.5 23.9 12.5±1 0.75 ~ 0.85
YXS-5U SrFe12O19 350 340 263 247 398 374 23.1 21.5 12.5±1 0.75 ~ 0.85
YXS-6 SrFe12O19 410 400 271 255 279 263 31.8 30.2 12.5±1 0.70 ~ 0.80
YXS-6H SrFe12O19 400 390 294 279 318 294 30.2 28.7 13±1 0.70 ~ 0.80

* The shrinkage rate on vertical direction is about 13±0.5%

In order to ensure the high qualified granular material is purchased from our company, the particle should be dry ground to 3-5µm at first, and then be wet ground in a sand grinding mill or ball mill to less than 1 µm, 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. Along 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 (<1µm). 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 to 1270°C for reference. Please note that the proper sintering temperature should be defined in accordance with the status of the sintered sample pill
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