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Nickel Coating Neo Neodymium Magnets For Electric Motors

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Nickel Coating Neo Neodymium Magnets For Electric Motors

Country/Region	china
City & Province	changsha hunan
Categories	Magnetic Materials

Product Details

Strong Magnet Customized Neodymium Magnets Arc for rotor motor

Introduction of Manufacturing Process

Sintered Neodymium magnet is prepared by the raw materials being melted under vacuum or inert gas atmosphere in an induction melting furnace and processed in the strip caster and thus cooled to form alloy strip. The strips are crushed and pulverized to form a fine powder ranging from 3 to 7 microns in particle size. The powder is subsequently compacted in an aligning field and sintered into dense bodies. The blanks are then machined to the specific shapes, surface treated and magnetized.

Please see the following our neo magnet grade

grade	Br		Hcb		Hcj		(BH)max		temperature coefficient		Max working temperature
	Br		Hcb		Hcj		(BH)max		α Br	β Hcj	Max working temperature
	T	kGs	kA/m	kOe	kA/m	kOe	kJ/m3	MGOe	%/℃	%/℃	℃
N54	1.45-1.48	14.5-14.8	≥836	≥10.5	≥876	≥11	415-461	52-58	-0.12	-0.65	80
N52	1.42-1.45	14.2-14.8	≥836	≥10.5	≥876	≥11	398-415	50-52	-0.12	-0.65	80
N50	1.40-1.42	14.0-14.5	≥836	≥10.5	≥955	≥12	374-398	47-50	-0.12	-0.65	80
N48	1.37-1.40	13.7-14.2	≥836	≥10.5	≥955	≥12	358-374	45-48	-0.12	-0.65	80
N45	1.32-1.37	13.2-13.7	≥836	≥10.5	≥955	≥12	342-358	43-45	-0.12	-0.65	80
N42	1.29-1.32	12.9-13.2	≥836	≥10.5	≥955	≥12	318-334	40-42	-0.12	-0.65	80
N40	1.26-1.29	12.6-12.9	≥836	≥10.5	≥955	≥12	303-318	38-40	-0.12	-0.65	80
N38	1.22-1.26	12.2-12.6	≥859	≥10.8	≥955	≥12	287-303	36-38	-0.12	-0.65	80
N35	1.17-1.21	11.7-12.1	≥859	≥10.8	≥955	≥12	263-279	33-35	-0.12	-0.65	80
N33	1.14-1.17	11.4-11.7	≥836	≥10.5	≥955	≥12	247-263	31-33	-0.12	-0.65	80
N30	1.08-1.12	10.8-11.2	≥796	≥10.0	≥955	≥12	223-239	28-30	-0.12	-0.65	80
N52M	1.42-1.45	14.2-14.5	≥995	12.5	≥1114	≥14	389-422	49-53	-0.12	-0.65	100
N50M	1.39-1.45	13.9-14.5	≥1050	≥13.2	≥1114	≥14	374-406	47-51	-0.12	-0.65	100
N48M	1.37-1.42	13.7-14.2	≥1018	≥12.8	≥1114	≥14	366-390	46-49	-0.12	-0.65	100
N45M	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1114	≥14	334-366	42-46	-0.12	-0.65	100
N42M	1.29-1.32	12.9-13.2	≥955	≥12.0	≥1114	≥14	318-334	40-42	-0.12	-0.65	100
N40M	1.26-1.29	12.6-12.9	≥939	≥11.8	≥1114	≥14	303-318	38-40	-0.12	-0.65	100
N38M	1.22-1.26	12.2-12.6	≥916	≥11.5	≥1114	≥14	287-303	36-38	-0.12	-0.65	100
N35M	1.17-1.21	11.7-12.1	≥876	≥11.0	≥1114	≥14	263-279	33-35	-0.12	-0.65	100
N33M	1.14-1.17	11.4-11.7	≥852	≥10.7	≥1114	≥14	247-263	31-33	-0.12	-0.65	100
N30M	1.08-1.12	10.8-11.2	≥812	≥10.2	≥1114	≥14	223-239	28-30	-0.12	-0.65	100
N52H	1.42-1.45	14.2-14.5	≥1035	≥13.0	≥1353	≥16.5	398-422	50-53	-0.11	-0.58	120
N50H	1.39-1.42	13.9-14.2	≥1035	≥13.0	≥1353	≥17	374-398	47-50	-0.11	-0.58	120
N48H	1.36-1.42	13.6-14.2	≥1026	≥12.9	≥1353	≥17	358-374	45-49	-0.11	-0.58	120
N45H	1.32-1.38	13.2-13.8	≥987	≥12.4	≥1353	≥17	334-366	42-46	-0.11	-0.58	120
N42H	1.29-1.32	12.9-13.2	≥955	≥12.0	≥1353	≥17	318-334	40-42	-0.11	-0.58	120
N40H	1.26-1.29	12.6-12.9	≥939	≥11.8	≥1353	≥17	303-318	38-40	-0.11	-0.62	120
N38H	1.22-1.26	12.2-12.6	≥916	≥11.6	≥1353	≥17	287-303	36-38	-0.11	-0.62	120
N35H	1.17-1.21	11.7-12.1	≥875	≥11.0	≥1353	≥17	263-279	33-35	-0.11	-0.62	120
N33H	1.14-1.17	11.4-11.7	≥851	≥10.7	≥1353	≥17	247-263	31-33	-0.11	-0.62	120
N30H	1.08-1.12	10.8-11.2	≥812	≥10.2	≥1353	≥17	223-239	28-30	-0.11	-0.62	120
N50SH	1.39-1.42	13.9-14.2	≥1035	≥13.0	≥1500	≥19	398-415	47-50	-0.11	-0.6	150
N48SH	1.36-1.42	13.6-14.2	≥1026	≥12.9	≥1592	≥20	358-398	45-49	-0.11	-0.6	150
N45SH	1.32-1.36	13.2-13.6	≥987	≥12.4	≥1592	≥20	334-366	42-46	-0.11	-0.6	150
N42SH	1.29-1.32	12.9-13.2	≥963	≥12.1	≥1592	≥20	318-334	40-42	-0.11	-0.6	150
N40SH	1.26-1.29	12.6-12.9	≥931	≥11.7	≥1592	≥20	303-318	38-40	-0.11	-0.6	150
N38SH	1.22-1.26	12.2-12.6	≥899	≥11.3	≥1592	≥20	287-303	36-38	-0.11	-0.6	150
N35SH	1.17-1.21	11.7-12.1	≥876	≥11.0	≥1592	≥20	263-279	33-35	-0.11	-0.6	150
N33SH	1.14-1.17	11.4-11.7	≥851	≥10.7	≥1592	≥20	247-263	31-33	-0.11	-0.6	150
N30SH	1.08-1.12	10.8-11.2	≥812	≥10.2	≥1592	≥20	223-239	28-30	-0.11	-0.6	150
N45UH	1.32-1.36	13.2-13.6	≥987	≥12.4	≥1990	≥25	334-366	42-46	-0.1	-0.55	180
N42UH	1.29-1.32	12.9-13.2	≥963	≥12.1	≥1990	≥25	318-334	40-42	-0.1	-0.55	180
N40UH	1.26-1.32	12.6-13.2	≥939	≥11.8	≥1990	≥25	303-318	38-40	-0.1	-0.55	180
N38UH	1.22-1.26	12.2-12.6	≥915	≥11.5	≥1990	≥25	287-303	36-38	-0.1	-0.55	180
N35UH	1.17-1.21	11.7-12.1	≥875	≥11.0	≥1990	≥25	263-279	33-35	-0.1	-0.55	180
N33UH	1.14-1.17	11.4-11.7	≥851	≥10.7	≥1990	≥25	247-263	31-33	-0.1	-0.55	180
N30UH	1.08-1.12	10.8-11.2	≥812	≥10.2	≥1990	≥25	223-239	28-30	-0.1	-0.55	180
N38EH	1.22-1.29	12.2-12.9	≥907	≥11.4	≥2388	≥30	287-318	36-40	-0.09	-0.5	200
N35EH	1.18-1.25	11.8-12.5	≥875	≥11.0	≥2388	≥30	263-295	33-37	-0.09	-0.5	200
N33EH	1.14-1.17	11.4-11.7	≥851	≥10.7	≥2388	≥30	247-263	31-33	-0.09	-0.5	200
N30EH	1.08-1.12	10.8-11.2	≥812	≥10.2	≥2388	≥30	223-239	28-30	-0.09	-0.5	200
N32AH	1.12-1.20	10.8-12.0	≥860	≥10.8	≥2626	≥33	247-279	31-35	-0.09	-0.44	220

Protecting neodymium magnets is important because they quickly oxidize without a protective coating.

1, Nickel coating

Nickel plated magnets and the most common coating on most magnets in the market. This coating is typically used as a three-layer coating with copper in the middle (nickel copper nickel). As long as it is moisture-proof, it is very suitable for indoor/outdoor use.

Nickel coating can also be used as black nickel, with a shiny dark gray/charcoal color.

2, Chemical nickel coating

Chemical nickel plating is similar to regular nickel plating, except that it is almost completely resistant to alkali, salt/brine solutions, chemical and petroleum environments, as well as all types of hydrocarbons, solvents, ammonia solutions, and acids. This makes electroless nickel plating an excellent choice for magnets that require corrosion resistance.

3, Galvanized coating

Zinc is commonly used as a single layer coating. It has excellent performance as a corrosion-resistant coating and is also very affordable. As zinc begins to oxidize, it forms a layer of zinc oxide, which helps protect the magnet.

4, Epoxy resin coating

The epoxy resin coating is mostly black, covering three layers of nickel coating (Ni Cu Ni Epoxy). It provides excellent performance in outdoor applications that require corrosion resistance. This coating is softer than other coatings and is prone to scratches, which can expose the underlying layer and cause corrosion of the magnet. There are multiple colors to choose from for epoxy resin coatings.