Do you know which is the strongest magnet at present
At present, the strongest permanent magnet is neodymium iron boron, so it is also called neodymium iron boron strong magnet. The strong magnet defaults to neodymium iron boron. The higher the performance brand of the same specification, the stronger the magnetic force. The highest performance is N55. The rare earth NdFeB magnets produced by VECTOR are mainly special-shaped (special-shaped strong magnets), which are called magneto king by the world. Almost every industry is involved.
However, the magnets to be used in different environments are not the same. If you want to say which magnetic force is strong in an ordinary environment, you can use the N-series brand of Nd-Fe-B. n35-n52 (the higher the brand of the same specification, the stronger the magnetic force) can be used according to the situation, and its maximum working temperature is 80 °.
To popularize here, many people will think that the magnetic force of H, SH and uh added behind the magnet brand will be stronger. In fact, it is not. The more resistant to high temperature, the lower the magnetic force, which is inversely proportional rather than proportional.
This is the strong magnetic force at both pole ends of a magnet. It can also be measured with a Gauss meter. The surface magnetism of the center of the magnet is lower than that of the surrounding edges.
What magnet has the strongest magnetic force in an environment resistant to more than 200 degrees?
Samarium cobalt is the most powerful magnet in the environment above 200 ℃.Based on the overall history data, Samarium Cobalt is more expensive than Sintered NdFeB. Samarium cobalt magnets are not easy to be corroded because iron accounts for a small part. Generally, electroplating is not required. Electroplating is also possible for beauty.
If samarium cobalt magnet is used in seawater, some rust spots will be generated on the surface of the product, but its performance and use will not be affected. Due to the physical characteristics of samarium cobalt magnet, samarium cobalt magnet is very brittle (more brittle than glass), and a little force on the edge will cause chips.
As for ferrite, the magnetic force is needless to say. The magnetic force is relatively weak and the price is very low. It is usually selected when it can withstand particularly high temperature
