There are many kinds of magnets. Generally divided into permanent magnets and soft magnetic two major categories.
The magnets we speak of are generally referred to as forever Magnetic magnets.
Permanent magnets are divided into two major categories
The first major category
Metal alloy magnets include neodymium-iron-boron magnets, samarium cobalt magnets, aluminum-nickel-Cobalt magnets
The second category: Ferrite permanent Magnets
1, Neodymium iron-boron magnets
It is currently the most magnetic magnet, known as the Magnetic King, has a very high magnetic properties, its maximum magnetic energy product high Over 10 times times more than ferrite. ND-FE-B machine Maple processing performance is very good.
Maximum operating temperature up to 200 photo
degree, and hard, stable performance, have a good price, so widely used in various industries In However, because of its strong chemical activity, it is necessary to treat its surface coating.
(e.g. Zn,ki, epoxy, etc.).
2. Ferrite Magnets: Its main raw materials include Ba0 or Sr0 and FE02.
Made by ceramic technology, the texture is relatively hard
Belongs to the brittle village material, because the ferrite magnet has the very good temperature resistance, the price is low, the performance is moderate, has become should
The most widely used permanent magnets
3. Aluminum Nickel Cobalt Magnet An alloy consisting of aluminum, nickel, cobalt, iron, and other micro-metallic elements.
Foundry Cheese can be processed Produced in different sizes and shapes, machinable is very good.
The casting al-Ni-Co permanent magnet has the lowest reversible temperature coefficient, Working temperature can be as high as 600 degrees Celsius or above.
Aluminum-nickel-cobalt permanent magnet products are widely used in various instruments and meters and their
His field of application.
4, Samarium Cobalt. Its development is limited by its high cost of materials.
Samarium Cobalt, as rare earth permanent magnet iron, does not But it has higher magnetic energy product, reliable coercive force and good temperature characteristic.
Compared with neodymium-iron-boron magnets, samarium cobalt is more suitable for In high Temperature environment