Neodymium Magnets Package

2 year ago

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HU NAN YUBANG MAGNETIC MATERIAL CO.,LTD

 3 year year

Product details

What's Neodymium Magnet?

Sintered Neodymium Magnet are a type of permanent magnet made by mixing magnetic powder with a non-magnetic binder, such as epoxy or nylon, and then pressing the mixture into a desired shape. The magnetic powder used in bonded Nd-Fe-B magnets is typically made of neodymium-iron-boron (Nd-Fe-B), which is a very strong magnetic material. The binder helps to hold the magnetic particles together and also provides some protection against corrosion. Bonded Nd-Fe-B magnets are often used in applications where a strong magnetic field is required, such as in electric motors, sensors, and speakers. They are also known for their high resistance to demagnetization.

The production process of neodymium magnets involves several steps:
1. Raw material preparation: The raw materials used in the production of neodymium magnets are neodymium, iron, and boron. These materials are first prepared and mixed in the correct proportions.
2. Melting: The mixed raw materials are melted in a furnace at high temperatures of up to 1500°C.
3. Casting: The molten mixture is then poured into a mold to form a solid block.
4. Grinding: The solid block is then ground into a fine powder using a ball mill.
5. Pressing: The powder is then pressed into a compact shape using a hydraulic press.
6. Sintering: The compacted powder is then sintered in a furnace at high temperatures of up to 1200°C. This process helps to fuse the powder particles together to form a solid magnet.
7. Machining: The sintered magnet is then machined into the desired shape and size using various cutting tools.
8. Coating: Finally, the magnet is coated with a protective layer to prevent corrosion and damage.
The entire production process of neodymium magnets is complex and requires a high level of precision and expertise.

Neodymium magnets are a type of rare-earth magnet, which are the strongest permanent magnets available. They are made from an alloy of neodymium, iron, and boron and have a very high magnetic energy density. They are commonly used in motors, generators, and speakers.

Permanent ferrite magnets, also known as ceramic magnets, are made from a composite of iron oxide and barium or strontium carbonate. They are less powerful than neodymium magnets but are more affordable and have good resistance to corrosion. They are commonly used in refrigerator magnets, loudspeakers, and small electric motors.

In summary, neodymium magnets are stronger and more expensive than permanent ferrite magnets, which are more affordable and have good resistance to corrosion. The choice between the two depends on the specific application and magnetic strength required.

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Sintered Neodymium Magnets:

Technical data of sintered NdFeb
Material	Grade	Remanence		Coercive Force		Intrinsic Coercive		Maximum Energy product		Maximum working temp
		Br		Hcb		Hcj		(BH)max		Tw
		mT	kGs	kA/m	kOe	kA/m	kOe	Kj/m3	MGOe	（℃）
Sintered NdFeb	N28	1040-1090	10.4-10.9	796	10.0	955	12.0	199-223	25-26	80
	N30	1080-1130	10.8-11.3	796	10.0	955	12.0	223-247	28-31	80
	N33	1130-1170	11.3-11.7	836	10.5	955	12.0	247-271	31-34	80
	N35	1170-1220	11.7-12.2	868	10.9	955	12.0	263-287	33-36	80
	N38	1220-1250	12.2-12.5	899	11.3	955	12.0	287-310	36-39	80
	N40	1250-1280	12.5-12.8	923	11.6	955	12.0	302-326	38-41	80
	N42	1280-1320	12.8-13.2	923	11.6	955	12.0	318-342	40-43	80
	N45	1320-1370	13.2-13.7	876	11.0	955	12.0	342-366	43-46	80
	N48	1370-1420	13.7-14.2	892	11.2	955	12.0	366-390	46-49	80
	N50	1390-1440	13.9-14.4	836	10.5	955	12.0	374-406	47-51	80
	N52	1420-1470	14.2-14.7	836	10.5	876	11.0	390-422	49-53	60
	N30M	1080-1130	10.8-11.3	796	10.0	1114	14.0	223-247	28-31	100
	N33M	1130-1170	11.3-11.7	836	10.5	1114	14.0	247-271	31-34	100
	N35M	1170-1220	11.7-12.2	868	10.9	1114	14.0	263-287	33-36	100
	N38M	1220-1250	12.2-12.5	899	11.3	1114	14.0	287-310	36-39	100
	N40M	1250-1280	12.5-12.8	923	11.6	1114	14.0	302-326	38-41	100
	N42M	1280-1320	12.8-13.2	955	12.0	1114	14.0	318-342	40-43	100
	N45M	1320-1370	13.2-13.7	995	12.5	1114	14.0	342-366	43-46	100
	N48M	1360-1420	13.6-14.2	1019	12.8	1114	14.0	358-390	46-49	100
	N50M	1390-1440	13.9-14.4	1035	13.0	1114	14.0	374-406	47-51	100
	N52M	1420-1470	14.2-14.7	995	12.5	1035	13.0	390-422	49-53	90
	N30H	1080-1130	10.8-11.3	796	10.0	1353	17.0	223-247	28-31	120
	N33H	1130-1170	11.3-11.7	836	10.5	1353	17.0	247-271	31-34	120
	N35H	1170-1220	11.7-12.2	868	10.9	1353	17.0	263-287	33-36	120
	N38H	1220-1250	12.2-12.5	899	11.3	1353	17.0	287-310	36-39	120
	N40H	1250-1280	12.5-12.8	923	11.6	1353	17.0	302-326	38-41	120
	N42H	1280-1320	12.8-13.2	955	12.0	1353	17.0	318-342	40-43	120
	N45H	1320-1370	13.2-13.7	971	12.2	1353	17.0	342-366	43-46	120
	N48H	1360-1420	13.6-14.2	1027	12.9	1353	17.0	358-390	45-49	120
	N50H	1390-1440	13.9-14.4	1035	13.0	1274	16.0	374-406	47-51	110
	N30SH	1080-1130	10.8-11.3	804	10.1	1592	20.0	223-247	28-31	150
	N33SH	1130-1170	11.3-11.7	844	10.6	1592	20.0	247-271	31-34	150
	N35SH	1170-1220	11.7-12.2	876	11.0	1592	20.0	263-287	33-36	150
	N38SH	1220-1250	12.2-12.5	907	11.4	1592	20.0	287-310	36-39	150
	N40SH	1250-1280	12.5-12.8	939	11.8	1592	20.0	302-326	38-41	150
	N42SH	1280-1320	12.8-13.2	971	12.2	1592	20.0	318-342	40-43	150
	N45SH	1320-1370	13.2-13.7	979	12.3	1592	20.0	342-366	43-46	150
	N48SH	1360-1420	13.6-14.2	995	12.5	1512	19.0	358-390	45-49	140
	N28UH	1020-1080	10.2-10.8	764	9.6	1990	25.0	207-231	26-29	180
	N30UH	1080-1130	10.8-11.3	812	10.2	1990	25.0	223-247	28-31	180
	N33UH	1130-1170	11.3-11.7	852	10.7	1990	25.0	247-271	31-34	180
	N35UH	1170-1220	11.7-12.2	860	10.8	1990	25.0	263-287	33-36	180
	N38UH	1220-1250	12.2-12.5	876	11.0	1990	25.0	287-310	36-39	180
	N40UH	1250-1280	12.5-12.8	915	11.5	1990	25.0	302-326	38-41	180
	N42UH	1270-1320	12.7-13.2	971	12.2	1990	25.0	310-342	39-43	180
	N28EH	1040-1090	10.4-10.9	780	9.8	2388	30.0	207-231	26-29	200
	N30EH	1080-1130	10.8-11.3	812	10.2	2388	30.0	223-247	28-31	200
	N33EH	1130-1170	11.3-11.7	820	10.3	2388	30.0	247-271	31-34	200
	N35EH	1170-1220	11.7-12.2	836	10.5	2388	30.0	263-287	33-36	200
	N38EH	1220-1250	12.2-12.5	915	11.5	2388	30.0	279-310	35-39	200
	N28AH	1020-1090	10.2-10.9	780	9.8	2706	34.0	199-231	25-29	200
	N30AH	1070-1130	10.7-11.3	812	10.2	2706	34.0	215-247	27-31	200
	N33AH	1110-1170	11.1-11.7	836	10.5	2706	34.0	239-271	30-34	200

Neodymium Magnets package details: