Powerful magnet who is strong in hand

Powerful magnets Everyone knows what it is, is far stronger than the general magnetic magnet .

Powerful neodymium magnets , the magnetic field is one that can produce objects or material, can be grouped into " permanent magnet" and " non-permanent magnet" traditionally .
The permanent magnet may be a natural product , also known as natural magnet to be manufactured by a human ( the strongest magnets are neodymium magnets ) . The non-permanent magnets will lose their magnetism .
Lodestone refers rare earth magnet, the magnetic stability of such magnets , powerful magnets and never demagnetized
Britain at the end of thousands of years to carry out , today we have become a magnet livelihoods essential function of the data . After a progressive powder metallurgy alloys consisting strange information , you can reach and exceed the magnet effect , and also the maximum limit to progress magnetism. In the 18th century presents artificial magnet , but the process of making higher magnetic data is very slow until the 1920s to produce aluminum -nickel-cobalt (Alnico). Subsequently , in 1948, produced a ferrite (Ferrite), 70 years to produce a rare earth magnet [Rare Earth magnet] samarium cobalt (SmCo), 1986年neodymium iron boron (NdFeB) was born, this is by far the world's strongest magnet. So far , the physical magnetism technology has been rapid launch , magnetic data also makes components increasingly miniaturized, 1999 Zibo Jin Sheng strong magnet rare earth magnets 13000GS breakthrough combination of independent occupational precedent , and soon in the industry to implement open, China ushered in a new world of rare-earth magnetic rapid occupation carried out .
Magnet varieties:
Magnet , the magnet should be called , in English Magnet, magnet and now prime divided into two categories, one is soft , one is hard magnetic ;
Soft cover and soft silicon steel core ; hard magnetic cover Alnico , SmCo, Ferrite and Neodymium , during which , the most expensive is samarium cobalt magnets , cheapest ferrite magnet, features the highest NdFeB magnets, but the most secure, the best temperature coefficient is alnico , the user can select products based on hard magnetic strange strange demand.