Ferrite Magnet

离岸价格

获取最新报价

( Negotiable )

100 Piece Minimum Order

国家:

China

型号:

Yohan

离岸价格:

( Negotiable )（面議）获取最新报价

位置:

China

最小订单价格:

最小订单:

100 Piece

包装细节:

Insulation Packing

交货时间:

25-35 days

供应能力:

100000 Piece per Month

付款方式:

T/T, L/C, D/P, Western Union, Money Gram, PayPal, Other

產品組 :

Magnet

现在联系

Yuyao Keyli Magnetics Co., Ltd.

China

免费会员

联系人 Ms. Moliza

Sanqi Twon, Ningbo, Zhejiang

现在联系

产品规格

Black, No coatings :All Grades

详情

Item: Ferrite Magnet, Motor Ferrite Magnet

Shapes:Disc, Cylinder, Rod, Block, Ring, Segment, Special Shape and more Customized Size is available.

Ferrite Magnet, Motor Ferrite Magnet the third generation of rare-earth permanent magnet, is the most powerful and advanced commercialized permanent magnet today. It can be formed into Various sizes and widely used in many fields such as aviation, electronics, Instruments, meters, machines and medical instrument.

Our Ferrite Magnets are available in a variety of shapes and sizes, including blocks, rings, arcs, segments and disc...In order to ensure the highest quality products, we have Founded a R&D center and quality control center for solving the problems in Production and quality.

We highly appreciate your any enquiry by email, by fax or by Instant message.
We will reply your email or fax within *2 hours.
Please feel free to call us at any time if there is any question.

Transportation.

All available shipping ways could be applied, by courier, by air or by sea.

Appointed shipping company or our own forwarders all could be used in shipment.

Characteristics of Ferrite Magnets

This section provides information of the physical properties of Ferrite Permanent Magnets.

Ferrite permanent magnets have good machining properties which allows them to be cut into different shapes and sizes - they are cut with diamond tooling; standard drills and wire spark erosion techniques do not work (they are electrically insulating so current does not pass through them due to their extremely high electrical resistance, hence their other name of Ceramic Magnets).

Ferrite magnets are made by wet or dry pressing and sometimes by extrusion. Wet pressing gives stronger magnetic properties (e.g. Ferrite C8). Dry pressing gives improved dimensional tolerances (e.g. Ferrite C5). The magnets are then sintered to fuse the powder together and are then machined to final shape. The extrusion method can be applied to produce arc segment shapes which are then cut to length. Sometimes new tooling is required to produce the ferrite magnets if existing tooling does not allow the shape to be produced. Typical tolerances for ferrite magnets are +/*0.*5mm although +/*3% is also used.

When Ferrite magnets get hotter, their high intrinsic coercivity actually improves (improving resistance to demagnetisation) making them extremely popular in motor and generator designs and also in loudspeaker applications (only ferrite magnets become noticeably more resistant to demagnetisation when heated). Ferrite magnets have a positive temperature coefficient of Intrinsic Coercivity (it changes by *0.*7 %/deg C from ambient) and only ferrite shows this amount of this characteristic. However the magnetic output does fall with temperature (it has a negative temperature coefficient of Induction of *0.2 %/degC from ambient). The end result is that Ferrite magnets (ceramic magnets) can be used at high temperature with very few issues.

Ferrite magnets can be used up to ***0 degrees C (and in some cases up to ***0 deg C) making it ideal for use in electrical machines and most high temperature applications. At sub-zero temperatures e.g. less than **0 to **0 deg C, ferrite magnets may start to show a reduced pull force (the temperature and the degree of weakening depends on the magnet shape and is application specific; in most applications the temperature of operation is not low enough for this effect to happen). This is because if its *0.*7 %/deg C temperature coefficient of Intrinsic Coercivity - the Hci falls as the magnet gets colder. Ferrite can demagnetise if put in too cold an environment but it is the total magnetic circuit design that determines how cold the magnet must be before any weakening is noted (e.g. operating at temperatures as low as **0 deg C is possible with careful design).

The ferrite grades have physical properties which are similar between the grades. Below is an overview of these properties:-

Summary of Physical Properties of Ferrite magnets / Ceramic magnets

Characteristic	Symbol	Unit	Value
Density	D	g/cc	4.9 – 5.1
Vickers Hardness	Hv	D.P.N	0 - 0
Compression Strength	C.S	N/mm2	0 - 0
Coefficient of Thermal Expansion	C//	***6/°C	*5
	C^	***6/°C	*0
Electrical Resistance	R	micro Ω.cm	1 x ***0
Thermal Conductivity	k	w/cm°C	0.**9
Tensile Strength	σUTS, or SU	Pa	4 x *6
Modulus of Elasticity		Pa	1.8 x ***1
Flexural Strength

国家:	China
型号:	Yohan
离岸价格:	( Negotiable ) （面議）获取最新报价
位置:	China
最小订单价格:	-
最小订单:	100 Piece
包装细节:	Insulation Packing
交货时间:	25-35 days
供应能力:	100000 Piece per Month
付款方式:	T/T, L/C, D/P, Western Union, Money Gram, PayPal, Other
產品組 :	Magnet