The strength of the reverse magnetic field required to reduce the magnetization of a 400 degree high temperature resistant magnet to zero is called intrinsic coercivity.

How to choose a magnet?

Before deciding which type of magnet to choose, it should be clear what action the magnet is required to perform.

Main functions: moving, fixing or lifting objects.

Shape of magnet required: disk, circle, square, tile or special shape.

Required magnet dimensions: length, width, height, diameter, tolerance, etc.

Required magnetic suction, expected price and quantity, etc.

The compass was invented according to the properties of magnets.

High temperature resistant permanent magnet includes silicon steel sheet and soft magnetic core. Hard magnetism includes aluminum-nickel-cobalt, samarium cobalt, ferrite and ndfeb, of which the most

Expensive is samarium cobalt magnetic steel, the cheapest is ferrite magnetic steel, the highest performance is ndfeb magnetic steel, but the most stable performance, temperature system

The best is aluminum-nickel-cobalt magnetic steel, and users can choose different hard magnetic products according to different needs.

How to define the properties of a magnet?

There are mainly three performance parameters to determine the performance of the magnet:

Residual Br: after the permanent magnet is magnetized to technology saturation and the outer magnetic field is removed, the retained Br is called residual magnetic induction strength.

Coercivity Hc: to reduce the B of the permanent magnet magnetized to the saturation of the technology to zero, the required strength of the reverse magnetic field is called magnetic sense coercivity.

Short for coercivity.

Magnetic energy product BH: represents the magnetic energy density established by the magnet in the air gap space (the space between two magnetic poles of the magnet), that is, the unit volume of the air gap

Magnetostatic energy. Since this energy is equal to the product of m m and m of the magnet, it is called the magnetic energy product.

Magnetic field: a magnetic field is the space that ACTS on the magnetic poles.

Surface magnetic field: the intensity of magnetic induction at a specified location on the surface of a permanent magnet.

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Iron (magnetic products); The leading products of the company with high technology content: various specifications and high performance magnetic bar, tile magnetic, square magnetic, circular magnetic, ring magnetic, cutting magnetic, high temperature resistant powerful magnet, etc. It is widely used in electrical machinery, electronics, electrical appliances, toys, health care and other fields. At the same time in the production of large block magnetic, large ring magnetic, cutting magnetic and other superb technology and equipment. After years of research and development, we with excellent quality, improve after-sales service, the company's products are exported to Japan, South Korea, Hong Kong and Taiwan and other regions, by the majority of users welcome and trust. With a complete and scientific quality management system, welcome friends from all walks of life to visit, guidance and business negotiations.