SHENZHEN TOPMAG TECHNOLOGY CO.,LTD

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Custom Bonded Magnet (Ferrite)

Low density,High impact strength

Topmag has a variety of Sizes and specifications of Bonded Magnet. We have professional design team to meet your special needs. Ask for a quotation or contact us for more information on Bonded Magnet

Bonded magnets are a permanent magnet for injection molding.

Sizes & Shapes:

Grade	Specification	Poles	Application	Image
PA12	OD52-ID36-25
PA12	OD52-ID36-20
FA19+PA6	OD49.4-ID5-32
PA12	OD57-ID36-30
FA19	OD30-3.17-7with shaft
FA19	OD55.05+/-0.05-ID49+0.05-0.2-11.5	4
DG14/PA6	OD8-ID1-2	6	Robot
FA22	OD58.4-ID52.8-15	10	TPW
Ferrite+SmFeN	OD58.4-ID52.8-15	10	TPW
FA19	OD152.3-ID133.6-24	Inner 16	Ceiling Fan
FA19	OD152-ID133-22.5	Inner 14	Ceiling Fan
FA19	OD113.5-ID94.2-22	Inner 10, 4 slots	Fan
FA19	OD102.8-ID86.2-25	Inner 10	Ceiling Fan
FA20	OD152-ID133.6-24.8	Inner 16	Ceiling Fan
FA19	OD152.25-ID135-24	Inner 16	Ceiling Fan
FA19	OD152±0.1-ID132.7＋0.2-24	Inner 16	Ceiling Fan
FA20	OD120-ID101-24	Inner 14	Ceiling Fan
FA19	OD152-ID132.2-25	Inner 16	Ceiling Fan

On-line Calculators

Rare Earth Data Book

Manufacturing:

It can be used in general machining method of general-purpose plastics (such as injection molding, extrusion, etc.) for processing, can be processed into size high precision thin wall complex shape products, with insert molding products, realize the miniaturization, electromagnetic equipment lightweight, precision and high performance.

Surface Treatments:

Bonded (ferrite) magnets have good oxidation resistance and usually do not require protective coating, plating or surface treatment.

Temperature Considerations:

Bonded magnets can be used at temperatures up to approximately (130℃~150℃). The magnetic properties of this material decrease fairly

linearly with increasing temperature.

Common Applications:

Audio equipment: coupler, phonograph with rotating transformer, TV receiver and computer monitors, CRT, color purity convergence adjusting ring, motor and sensor, FG CD and VCD tape recorder rotating head drive motor, door motor, magnet and earphone loudspeaker magnet tape recorder.

Household appliances: refrigerators, refrigerator door sealing strip, disinfection cabinet, bathroom, washing machine drain valve motor, timer motor,electric cooker seat, TV sets, video recorders, refrigerators, washing machine, vacuum cleaners and other electrical components.

Computer and office: a floppy drive motor, feed motor, cooling type axial flow fan, CRT display correction device; electrostatic copier magnetic roller, magnetic roller, cleaning the fax machine in the magnetic roller, magnetic roller laser printer;

Automotive Industry: Auto contactless distributor, magnetic gasket, stepping motor for fuel injection pump, shockproof sticking board;Health, culture: magnetic health care products, magnetic therapy mattress, magnetic rotor, toilet soap box; magnetic drawing board, student stationery, teaching aids, advertising, display magnetic blackboard; furniture door buckle, various magnetic toys etc..

Material Information:

	Test method	company	WN-022k	WN-102	WN-132	WN-152N	WN-172A
Magnetic Propertims			ISOTROPIC	ANISOTROPIC	ANISOTROPIC	ANISOTROPIC	ANISOTROPIC
Residual flux density(Br)	-	mT	105	215	232	260	272
Coercive force(bHc)	-	kA/m	80	160	175	195	195
Intrinsic coercive force (iHc)	-	kA/m	159	270	263	265	235
Maximum energy product（Bhmax）	-	KJ/m³	1.5	8.5	10.8	13.3	14.5
Thermal coefficient（▲Br/Br）	-	%/℃	-0.19	-0.19	-0.19	-0.19	-0.19
Thermal coefficient （▲Hc/Hc)	-	%/℃	0.2~0.3	0.2~0.3	0.2~0.3	0.2~0.3	0.2~0.3
OTHER PROPERTIMS
Tensill Strength	ASTMD-638	Mpa	43	54	49	58	58
Flexural Strength	ASTMD-790	Mpa	74	95	88	108	108
Flexural modulus	ASTMD-790	Mpa	6000	7500	8500	10000	10000
Lzod impact （with notch）	ASTMD-256	J/m	25	34	31	31	33
Rockwell hardness	ASTMD-785	R scale	108	108	108	114	115
Rockwell deflection temperature	ASTMD-648	℃	118	120	110	141	145
Specific gravity	ASTMD-792	...	2.84	3.03	3.29	3.38	3.52
Water absorption	ASTMD-570	%	0.06	0.05	0.05	0.04	0.04
Molding Shrinkage coefficient	DIC Method	%	0.7	0.6	0.6	0.6	0.5
Coefficient of thermal expansion	DIC Method	/℃	8.0×10^-5	7.2×10^-4	7.0×10^-5	5.6×10^-5	5.4×10^-5
Melt flow rate(270℃×5kg）	ASTMD-638	G/10min	-	90	40	60	-
Melt flow rate(270℃×10kg）	ASTMD-638	G/10min	-	-	-	-	120
Flammability	UI94	Class	-	-	V-2	V-1	V-0

Bonded Ferrite Magnetic Properties:

Grade				FA11	FA15	FA19	FA20T	FA22T
Resin Binder				PA6
Magnetic Properties	Residual Induction	Br	mT(Gs )	213 2130	245 2450	284 2840	293 2930	305 3050
	Coercive Force	Hcb	kA/m(Oe )	162 2040	183 2300	195 2450	193 2420	191 2400
	Coercive Force	Hcj	kA/m(Oe )	279 3500	251 3150	235 2950	223 2800	229 2870
	Maximum Energy Product	(BH)max	kJ/m3 (MGOe )	8.8 1.10	11.9 1.50	15.6 1.96	16.6 2.08	18.1 2.27
Mechanical Properties	Tensile Strength		MPa	85	85	90	85	80
	Flexural Strength		MPa	160	165	170	160	145
	Izod Impact Strength		kJ/m2	50	35	19	15	11
Physical Properties	Density		g/cm3	3.03	3.32	3.60	3.70	3.85
	Melt Flow Rate (270℃/10kg)		g/10min	100	80	120	80	50
	Rev.Temp. Coef. of Br		%/K	-0.19	-0.19	-0.19	-0.19	-0.19
	Rev.Temp. Coef. of Hcj		%/K	0.13	0.13	0.13	0.13	0.13
	Molded Shrinkage		%	0.7	0.4	0.4	0.4	0.3
Injection Parameters	Pre-drying Temp.		℃	100~120	100~120	100~120	100~120	100~120
	Pre-drying Time		hr	4~8	4~8	4~8	4~8	4~8
	Injection Temp.		℃	250~270	260~280	265~285	270~290	275~295
	Mold Temp.		℃	60~80	60~80	60~80	60~80	60~80
	Pressure		bar	60~90	70~100	60~90	65~95	70~100
	Speed		V%	40~70	45~75	45~75	45~75	50~80

Your Custom Bonded Magnet Project - How Can We Help?

It is very important to get the best solution with the industry team Precipitation for10 years, Top magnet all have multiple countries more projects in the field of knowledge accumulation, we have professional magnetic products detection machine,in the work of the performance of the products FEA tool, we have the temperature changed into for your project and application of technical support and reference data, Contact us or ask for a quotation to find out more about Bonded Magnet

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