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Some friends have asked whether the magnet is strong or weak. Today, I will share with you the popular science.
Whether the magnet is strong or weak depends on the magnet material
Different people have different ideas about strong magnetism. Some people even connect strong ferrites together, which is actually wrong. Generally speaking, strong magnetism refers to NdFeB magnets (a rare earth magnet) by default. , while ferrite is called general magnetism.
Is it feasible to use a Gauss meter to measure the Gauss of a magnet to determine whether the magnet is strong or weak?
Basically feasible, why say basic? Mainly because there is a knowledge that many people do not know, that is, the Gauss value of a magnet is inversely proportional to the size of the magnet, and the Gauss value measured by a large NdFeB magnet will not be larger, such as seven or eight hundred, There are thousands of Gaussians, and ferrite can also reach this value. Generally, the surface magnetic field strength of NdFeB will be higher than 2000 Gauss, while the general magnetic field of ferrite will be lower than this value.
Some people still don't understand, let's take a look at the difference between them.
First of all, we first distinguish the primary color of NdFeB from gray and white. After the finished product is processed, the surface is generally electroplated with anti-oxidation treatment, galvanized or nickel-plated. After electroplating, the surface becomes silver-white, and the broken section is gray-white.
The surface of the ferrite magnet is jet black. Generally, the product does not need electroplating treatment (strong anti-corrosion and anti-rust ability), so the outer layer is still jet black, and the inside is jet black when broken.
In terms of weight, it can be distinguished from strong magnetic or weak magnetic. NdFeB strong magnet is a magnetic material product made of rare earth components extracted and sintered. The density of NdFeB is generally 7.5, and the weight is relatively heavy. The density of ferrite is generally It is 4.8, which is lighter than NdFeB.
The above is what Courage Xiaofu, a powerful magnet processing factory, introduced to you about whether the magnet is strong or ordinary. Our company produces and sells all kinds of permanent magnets. If you need a quotation, you can contact us for samples.
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