isotropic ferrite magnetb rotor

2 year ago

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3 year

Product details

Ceramic Ferrite Magnet for Auto Swing Motor Coolers

Magnetic therapy is a method of treating certain diseases by applying artificial magnetic fields to the meridians, acupoints and diseased areas of the human body. Hospital professional magnetic therapy equipment for hypertension, arthritis, headache, insomnia, coronary heart disease, gastroenteritis, facial spasm, contusion, cervical spondylosis and so on are effective. But some diseases are treated directly and others are treated adjunct

characteristic

As Isotropic Ferrite Magnets, the powder metallurgy method has low remanence and low recovery magnetic permeability. High coercivity, strong anti-demagnetization ability, especially suitable for dynamic working conditions of magnetic circuit structure. Hard and brittle material, can be used for emery tools for cutting processing. The main raw material is oxide, so it is not easily corroded. Operating temperature :-40℃ to +200℃.

Ferrite magnets are divided into anisotropic (heterotropic) and isotropic (isotropic). The magnetic properties of the isotropic sintered ferrite materials are weak, but they can be magnetized in different directions of the magnet. Heteromorphic sintered ferrite permanent magnet materials have strong magnetic properties, but only along the intended direction of magnetization of the magnet.

Physical property

In the actual production of ferrite magnets, raw materials with good chemical composition may not be able to obtain ferrite magnets with good properties and microstructure sometimes, because of the influence of physical properties. The listed physical properties of iron oxide include mean particle size APS, specific surface area SSA, and loose density BD. As iron oxide accounts for about 70% in the formula of manganese zinc ferrite magnet, its APS value has a great influence on the APS value of ferrite magnet powder. Generally speaking, the APS value of iron oxide is small, and the APS value of ferrite magnet powder is also small, which is conducive to speeding up the speed of chemical reaction. However, the APS value should not be too small considering that the fine particle of powder is not conducive to post-process pressing and sintering easy crystallization. Obviously, when the APS value of iron oxide is too large, only the diffusion reaction of spinel phase can be carried out in the pre-firing process due to the large particle size, and the grain growth process can not be further carried out. This inevitably leads to the increase of activation energy required during sintering, which is not conducive to solid phase reaction.

The main performance and grade parameters of sintered permanent magnet ferrite

Material Grade	(Br)		(HcB)		(HcJ)		(BH)max
Material Grade	mT	KGauss	KA/m	KOe	KA/m	KOe	KJ/m3	MGOe
Y8T	200~235	2.0~2.35	125-160	1.57-2.01	210-280	2.64-3.51	6.5-9.5	0.8-1.2
Y22H	310~360	3.10~3.60	220-250	2.76-3.14	280-320	3.51-4.02	20.0-24.0	2.5-3.0
Y25	360~400	3.60~4.00	135-170	1.70-2.14	140-200	1.76-2.51	22.5-28.0	2.8-3.5
Y26H-1	360~390	3.60~3.90	200-250	2.51-3.14	225-255	2.83-3.20	23.0-28.0	2.9-3.5
Y26H-2	360~380	3.60~3.80	263-288	3.30-3.62	318-350	3.99-4.40	24.0-28.0	3.0-3.5
Y27H	350~380	3.50~3.80	225-240	2.83-3.01	235-260	2.95-3.27	25.0-29.0	3.1-3.6
Y28	370~400	3.70~4.00	175-210	2.20-3.64	180-220	2.26-2.76	26.0-30.0	3.3-3.8
Y28H-1	380~400	3.80~4.00	240-260	3.01-3.27	250-280	3.14-3.52	27.0-30.0	3.4-3.8
Y28H-2	360~380	3.60~3.80	271-295	3.40-3.70	382-405	4.80-5.08	26.0-30.0	3.3-3.8
Y30H-1	380~400	3.80~4.00	230-275	2.89-3.46	235-290	2.95-3.64	27.0-32.5	3.4-4.1
Y30H-2	395~415	3.95~4.15	275-300	3.45-3.77	310-335	3.89-4.20	27.0-32.0	3.4-4.0
Y32	400~420	4.00~4.20	160-190	2.01-2.39	165-195	2.07-2.45	30.0-33.5	3.8-4.2
Y32H-1	400~420	4.00~4.20	190-230	2.39-2.89	230-250	2.89-3.14	31.5-35.0	3.9-4.4
Y32H-2	400~440	4.00~4.40	224-240	2.81-3.01	230-250	2.89-3.14	31.0-34.0	3.9-4.3
Y33	410~430	4.10~4.30	220-250	2.76-3.14	225-255	2.83-3.20	31.5-35.0	3.9-4.4
Y33H	410~430	4.10~4.30	250-270	3.14-3.39	250-275	3.14-3.45	31.5-35.0	3.9-4.4
Y34	420~440	4.20~4.40	200-230	2.51-2.89	205-235	2.57-2.95	32.5-36.0	4.1-4.4
Y35	430~450	4.30~4.50	215-239	2.70-3.00	217-241	2.73-3.03	33.1-38.2	4.1-4.8
Y36	430~450	4.30~4.50	247-271	3.10-3.40	250-274	3.14-3.44	35.1-38.3	4.4-4.8
Y38	440~460	4.40~4.60	285-305	3.58-3.83	294-310	3.69-3.89	36.6-40.6	4.6-5.1
Y40	440~460	4.40~4.60	330-354	4.15-4.45	340-360	4.27-4.52	37.6-41.8	4.7-5.2

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HU NAN YUBANG MAGNETIC MATERIAL CO.,LTD

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3 year

Main Product: Permanent Ferrite Magnets , Isotropic Ferrite Magnets, Anisotropic Ferrite Magnets, Anisotropic Ferrite Magnet Rotor, Isotropic Multipole Magnetic Rotor, Sintered Neodymium Magnets

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