Neodymium iron boron magnets are widely used in our daily life, almost involving all walks of life, such as high-end motors such as nuclear magnetic resonance wind turbines, low-end ones such as audio, door magnets, mahjong magnets and so on.
So how to judge the quality of magnet (NdFeB magnet) when purchasing NdFeB strong magnet? This is a problem that many new people often encounter. What kind of magnet is good? Today, Karachi magnet factory will teach you some tips for choosing neodymium iron boron strong magnet
First of all, you need to know what kind of working environment your magnet is in.
2. Requirements for magnetic force and temperature of magnet
Third, there is how to choose the coating required by the magnet in the external environment
The selection of magnetic force can be based on your specifications. The temperature is specific. Select n series when the temperature is below 80 degrees, H series when the temperature is above 80 degrees, 120 degrees; SH series when the temperature is below 150 degrees; uh series when the temperature is above 180 degrees; EH and ah when the temperature is above 200 degrees
Coating common zinc and nickel plating, high requirements can be coated with epoxy, of course, can also be plated according to the requirements of other coatings, such as gold plating and so on are OK
Generally, the quality of NdFeB is mainly evaluated from two aspects:
1. Appearance
2, performance
Appearance: check whether there is edge missing or angle dropping, whether the electroplated layer is in good condition, and whether the size meets the design requirements
Performance: there is a unified standard for the performance of NdFeB, and the main inspection indexes are magnetic energy product, coercive force, remanence, etc
Guess you are still concerned: how long is the service life of NdFeB magnet
This depends on the use environment of the magnet, high temperature will make the magnetic attenuation, as well as the anti-corrosion treatment of the surface of the magnetic steel itself. If the magnetic steel is corroded in the use process, it will be powdered. If the normal temperature use anticorrosion also do well, generally 20 or 30 years will not have a problem
PS: when choosing magnets, we need to consider not only the price, but also the use. Only in this way can we choose our own suitable magnets. If you don't know, you can consult us!
