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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

Product	Shape	Size	Before Grinding	After Grinding
Wet Press Segment Magnet		R	R（-0.5 ~ +1）mm	± 0.1mm
		r	r（-0.5 ~ +1）mm	± 0.1mm
		L	L ± 2%	± 0.2mm
		W	W ± 0.2%	± 0.2mm
		T	T（-0.5 ~ +1）mm	± 0.1mm
		H	H（-0.5 ~ +1）mm	± 0.2mm
Wet Press Block Magnet		長度L	L ± 2%	± 0.2mm
		W	W ± 0.2%	± 0.2mm
		T	T ± 1.0mm	± 0.1mm

Permanent Ferrite Material Grades

Grade	Mlagnetic Properties
	Remanence		Coercivity		Intrinsic Coercivity		Max. Energy (BH)
	Br（MT）	Br（GS）	Hcb（AK/m）	Hcb（Oe）	Hcj（AK/m）	Hcj（Oe）	（BH）max（KJm3）	（BH）max（MGOe）
SM4H	360-380	3600-3800	255-278	3200-3500	318-342	4000-4300	25.5-27.9	3.2-3.5
SM4E	340-360	3400-3600	255-278	3200-3500	358-382	4500-4800	22.3-24.7	2.8-3.1
SM5N	400-420	4000-4200	246-270	3100-3400	263-286	3300-3600	31.0-33.4	3.9-4.2
SM5B	390-410	3900-4100	255-278	3200-3500	270-294	3400-3700	30.2-32.6	3.8-4.1
SM6N	410-430	4100-4300	250-274	3150-3450	258-282	3250-3550	32.6-35.0	4.1-4.4
SM6B	400-420	4000-4200	270-294	3400-3700	295-318	3700-4000	31.8-34.2	4.0-4.3
SM6H	390-410	3900-4100	286-310	3600-3900	310-334	3900-4200	30.2-32.6	3.8-4.1
SM7N	420-440	4200-4400	246-270	3100-3400	251-275	3150-3450	34.2-37.4	4.3-4.7
SM7B	410-430	4100-4300	290-313	3650-3950	306-330	3850-4150	31.8-35.0	4.1-4.4
SM7H	390-410	3900-4100	290-314	3650-3950	346-370	4350-4650	29.6-32.6	3.7-4.1
SM10N	430-450	4300-4500	270-294	3400-3700	275-299	3450-3750	35.0-38.1	4.4-4.8
SM10B	420-440	4200-4400	302-342	3800-4300	342-366	4300-4600	33.4-36.6	4.2-4.6
SM10H	410-430	4100-4300	294-334	3700-4200	380-406	4800-5100	31.8-35..0	4.1-4.4
SM13N	450-470	4500-4700	278-302	3500-3800	298-322	3750-4050	38.1-41.4	4.8-5.2
SM13B	440-460	4400-4600	302-342	3800-4300	342-366	4300-4600	35.0-38.1	4.4-4.8
SM13H	430-450	4300-4500	302-342	3800-4300	380-406	4800-5100	33.4-36.6	4.2-4.6

Permanent Ferrite Magnet B-H Curves

SM-4H
SM-5N
SM-6B
SM-7N
SM-10B
SM-13B

Permanent Ferrite Magnet Physical Characteristics

Curie Temperature	℃	450
Max Operating Temperature	℃	250
Hardness	Hv	>530
Density	g/cm3	4.8-5.1
Relative Recoil Permeability	μrec	1.05-1.1
Temperature Coefficient of Br	%/℃	-0.18
Temperature Coefficient of iHc	%/℃	0.11-0.40
Anti-BendingStrength	N/m2	(0.5-0.9)x10⁸
Anti-CompressiveStrength	N/m2	≥6.9x10⁸
Anti-TensileStrength	N/m2	(0.2-0.5)x10⁸
Specific Heat	J/kg.K	600-900
Resistivity	Q.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