Sintered Ferrite Magnet, hard ferrite, hard ferrite magnet is also called Ceramic Magnets. Ferrite Magnet,Block Ferrite Magnet,Round Ferrite Magnet,Hard Sintered Disc Ferrite Magnet Jinyu Magnet (Ningbo) Co., Ltd. , https://www.magnetbonwin.com
Sintered ferrite magnets are available in isotropic magnet and anisotropic magnets. The magnetic properties of isotropic ferrite are low. Since they have nearly the same magnetic properties in all directions, so isotropic ferrite magnets can be magnetized in many different directions or in multi-poles. Anisotropic ferrite magnets have better magnetic properties compare with isotropic ferrite magnets. However this type of magnets can only be magnetized along a preferred direction.
Permanent ferrite magnets are made of hard ferrites, which have a high coercivity and high remanence after magnetization. Iron oxide and barium or strontium carbonate are used in manufacturing of hard ferrite magnets. The high coercivity means the materials are very resistant to becoming demagnetized, an essential characteristic for a permanent magnet. They also have high magnetic permeability. These so-called ceramic magnets are cheap, and are widely used in household products such as refrigerator magnets. The maximum magnetic field B is about 0.35 tesla and the magnetic field strength H is about 30 to 160 kiloampere turns per meter (400 to 2000 oersteds). The density of ferrite magnets is about 5 g/cm3.
The most common hard ferrites are:
Strontium ferrite, SrFe12O19 (SrO·6Fe2O3), used in small electric motors, micro-wave devices, recording media, magneto-optic media, telecommunication and electronic industry.
Barium ferrite, BaFe12O19 (BaO·6Fe2O3), a common material for permanent magnet applications. Barium ferrites are robust ceramics that are generally stable to moisture and corrosion-resistant. They are used in e.g. loudspeaker magnets and as a medium for magnetic recording, e.g. on magnetic stripe cards.
Why choose Ferrite Magnet?
1. Low cost and low price.
The raw material cost is very cheap and manufacturing process is simple. So the price if it is very low.
2. Nice temperature stability
Ferrite magnets can be used in the working temperature from -40℃ to 200℃.
3. Well prevent corrosion
The raw material of sintered ferrite magnet is oxide, so ferrite magnets will not be rusted under severe environment nor affected by many chemicals.
Why is the BCH explosion-proof threading box widely popular?
Check the insulation resistance of the motor with a 500V megohmmeter. If the resistance value is less than 5MΩ, dry it or dry-circuit current method to make the insulation resistance greater than 5MΩ. BCH explosion-proof threading box According to the power supply, the outer diameter of the cable should be consistent with the sealing ring. After tightening the nut, ensure that there is no gap between the sealing ring and the cable between the sealing ring and the outlet nozzle, otherwise the explosion-proof performance will be lost. The non-wired part can not be dismantled. When wiring, open the cover of the wiring room, and thread the lead into the terminal. After connecting, close the cover and tighten the screw so that the clearance of the explosion-proof surface is less than 0.2 mm. Then tighten the wire outlet to make the wire outlet. The leads cannot be shaken. The outer diameter of the cable according to the power supply should be consistent with the sealing ring. After tightening the nut, ensure that there is no gap between the sealing ring and the cable between the sealing ring and the outlet nozzle, otherwise the explosion-proof performance will be lost.
Its small-spot electric switch, starter, relay, main electric appliance, electromagnet, bolt, junction box, seven major categories of products are used in large quantities, widely used, each of which is a large category, the wall-mounted factory combination appliances and volume in one Mine-type combination electrical appliances below cubic meters are designated as explosion-proof boxes. For combination-type electrical appliances for floor-standing factories and mining combination appliances with a volume of more than one cubic meter, they are designated as explosion-proof cabinets, and are composed of multiple independent explosion-proof electrical appliances. Electrical appliances. Be sure to prepare for the construction process so that you can take advantage of it. After the BCH explosion-proof threading box is placed, it should be thrown around for sealing. The surrounding and the back should also be cemented to make the wall of the wire box flat. Another important point is to remember not to operate with electricity, otherwise it will cause great harm to our personal safety. When the wire box manufacturer produces the wire box, it will choose different materials according to different application occasions. The plastic wire box is one of them. The first thing to pay attention to when threading boxes are the raw materials for their production. Because the quality of raw materials directly determines the quality of the products, the quality of the raw materials must be good. The above is the characteristics of the threading box. It is necessary to make good use of these characteristics during production, which is convenient for production and convenient for our use.