Ferrite magnet store reflect strengths: lowest, good temperature characteristic, and offer compares good corrosion resistance, the function,
Usually we common to that of the radio speakers and speakers)
Defects: low and medium function.
Magnet as a definite shape, is Tony the same, but they are some magnetic function, modern found the magnets have different properties, the most direct embodiment is the magnetic function between them is different, so in the inside, what the magnet magnetic function is one of the biggest?
This is called a strong magnet.
Magnet this is all sorts of magnetic material, it has the nature of the two extremes, material can attract each other or each other out, the magnet not created by man, there is a natural magnetite, the earliest discovery and use of magnet should be Chinese.
So the compass is one of Chinese four big creation.
With magnet material itself has become a mystery.
Rare earth ndfeb permanent magnet materials market analysis: in 1990, worldwide, the usage of 2. 5 million tons of rare earth ndfeb magnets, 1992 is 4 million tons, is 7 million tons, 1997 in 2000 to 10 million tons.
The main material of metal neodymium is the production of ndfeb (
, there are hundreds of thousands of ndfeb manufacturers in China.
In 1998, the annual production of 4 million tons.
In 2000, the world demand for 3. 5 million tons of neodymium, domestic demand also reached 1 million tons.
China has abundant rare earth resources, many countries are imported from China rare earth elements.
About 80% of Japan's rare earth elements from China, metal neodymium market changes with summary of market changes.
At present, ndfeb rare earth magnet needs annual growth of 12 - in the international market
15%, annual growth rate over 20%, domestic metal neodymium market is promising.
/ dongguan xiang xin magnet products co. , LTD. , magnets, powerful magnets, magnet manufacturers, special-shaped magnet