1.If you need high performance magnet, of course, choose Neodymium magnets.
However, there are many comprehensive factors to consider about the application of magnetic materials. Therefore, it’s not easy to choose a high performance that means fine, we suggest you to provide your application for manufacturers, manufacturers will give you reasonable advice (but it has little magnet application research in China, many manufacturers can’t give the customer a reasonable suggestion, that behind Europe and the United States a lot, which limits the development of magnetic materials applications products).
2.The working temperature of the magnet.
Different kinds of magnets work at different temperatures. The same material, different properties are not the same. Specific information that can query manufacturer website offers.
3.The fixed way of the magnet.
We generally adopted the bonding method. Now, the performance of the adhesive is very good, if the process is reasonable, there is basically no need to worry about the problem of magnet shedding.
Welding is not allowed. At least I don’t see any success.
Some magnets can be punched and so on, so they can be fixed by mechanical means, such as NdFeb magnet.
4. The strength and hardness of the magnet.
Most magnets are brittle and hard and break easily. Therefore, it is recommended to carry out appropriate protection when using.
5.The processing performance of the magnet.
The high hardness of magnet makes cold cutting difficult. Common machining methods are diamond blade cutting, line cutting, grinding and so on.
6. What are the advantages of using permanent magnet materials?
Many electromagnetic applications can be replaced by permanent magnets. Some examples are: no power consumption, no heat (this is very important), no worries about power outages, etc. For example, there is has a big problem of electromagnetic chuck that is the power protection. So electromagnetic lifting generally needs uninterruptible power supply, that results the increased of cost. But there is no worry about using permanent magnet chuck.
7.The life of magnet.
How long does a magnet last? There are two main factors: corrosion and demagnetization.
Corrosive magnets, electroplating or its material is not good, may not use a year on the powder off, such as NdFeb. The interior of PM products, unlike casting products, is loosely bonded. The magnet has a high internal stress. So microscopic particles always tend to disperse. Under the action of oxidation, it may soon become a powder.
The other thing is demagnetization. A demagnetized magnet, especially with high temperature demagnetization, has a phase change inside. Even if it is demagnetized again, it can’t recover its original performance.
Post time: Oct-17-2020