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Permanent Ferrite
High-performance wet-pressure tiles are the core components of permanent magnet microtomechatronics.
Magnetic materials are the basic functional materials in the electronics industry. As an important part of magnetic materials, permanent ferrite magnet plays an important role in the automobile industry, electronics industry, information industry, motorcycles, electric tools and other industries.
production process
Permanent Ferrite production process: Milling, Pressing, Sintering, Grinding, Cleaning and Cleaning&Packing of six major steps
Permanent Ferrite Magnet Product Sizes & Tolerances
ProductShapeSizeBefore GrindingAfter Grinding
Wet Press Segment MagnetRR（-0.5 ~ +1）mm± 0.1mm
rr（-0.5 ~ +1）mm± 0.1mm
LL ± 2%± 0.2mm
WW ± 0.2%± 0.2mm
TT（-0.5 ~ +1）mm± 0.1mm
HH（-0.5 ~ +1）mm± 0.2mm
Wet Press Block Magnet長度LL ± 2%± 0.2mm
WW ± 0.2%± 0.2mm
TT ± 1.0mm± 0.1mm
Permanent Ferrite Material Grades
GradeMlagnetic Properties
RemanenceCoercivityIntrinsic CoercivityMax. Energy (BH)
Br（MT）Br（GS）Hcb（AK/m）Hcb（Oe）Hcj（AK/m）Hcj（Oe）（BH）max（KJm3）（BH）max（MGOe）
SM4H360-3803600-3800255-2783200-3500318-3424000-430025.5-27.93.2-3.5
SM4E340-3603400-3600255-2783200-3500358-3824500-480022.3-24.72.8-3.1
SM5N400-4204000-4200246-2703100-3400263-2863300-360031.0-33.43.9-4.2
SM5B390-4103900-4100255-2783200-3500270-2943400-370030.2-32.63.8-4.1
SM6N410-4304100-4300250-2743150-3450258-2823250-355032.6-35.04.1-4.4
SM6B400-4204000-4200270-2943400-3700295-3183700-400031.8-34.24.0-4.3
SM6H390-4103900-4100286-3103600-3900310-3343900-420030.2-32.63.8-4.1
SM7N420-4404200-4400246-2703100-3400251-2753150-345034.2-37.44.3-4.7
SM7B410-4304100-4300290-3133650-3950306-3303850-415031.8-35.04.1-4.4
SM7H390-4103900-4100290-3143650-3950346-3704350-465029.6-32.63.7-4.1
SM10N430-4504300-4500270-2943400-3700275-2993450-375035.0-38.14.4-4.8
SM10B420-4404200-4400302-3423800-4300342-3664300-460033.4-36.64.2-4.6
SM10H410-4304100-4300294-3343700-4200380-4064800-510031.8-35..04.1-4.4
SM13N450-4704500-4700278-3023500-3800298-3223750-405038.1-41.44.8-5.2
SM13B440-4604400-4600302-3423800-4300342-3664300-460035.0-38.14.4-4.8
SM13H430-4504300-4500302-3423800-4300380-4064800-510033.4-36.64.2-4.6
Permanent Ferrite Magnet B-H Curves
Permanent Ferrite Magnet Physical Characteristics
Curie Temperature℃450
Max Operating Temperature℃250
HardnessHv>530
Densityg/cm34.8-5.1
Relative Recoil Permeabilityμrec1.05-1.1
Temperature Coefficient of Br%/℃-0.18
Temperature Coefficient of iHc%/℃0.11-0.40
Anti-BendingStrengthN/m2(0.5-0.9)x108
Anti-CompressiveStrengthN/m2≥6.9x108
Anti-TensileStrengthN/m2(0.2-0.5)x108
Specific HeatJ/kg.K600-900
ResistivityQ.cm>10?
Ferrite tiles in automotive motors

Power Antenna
Fuel Pump
Fan Motor
Wiper Motor
Anti-lock Motor
Window-adjusting Motor
Electric Window-adjusting Motor
Seat Adjusting Motor
Wiper Motor
Blower Motor
ABS Motor
Height Adjusting Motor
Starter Motor
Cooling Motor
Application of Ferrite Tiles in Inverter Appliance Motors

  • Air Conditioner Compressor Motor (rotor)
  • Refrigerator Compressor Motor (rotor)

  • Washing Machine Motor
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