Magnet manufacturer: world magnetic materials industry center has shifted to China
Magnet manufacturer: world magnetic materials industry center has shifted to China today, the world's magnetic materials industry center has shifted to China.
Predicts 2020, the Chinese production of magnetic materials will be more than half of the world, to become the world's magnetic materials industry center.
Although has begun to take shape in production, development is very fast, but compared with the magnetic material industry developed countries such as Japan, magnetic material industry in our country whether the management level, manufacturing process, product quality and the products have a certain gap.
Our country is the world's magnetic materials production country.
On June 23, 2008, and its professional and technical personnel came to dongguan ndfeb magnetic and practical investigation of magnetic materials industry.
In the survey, they found that the domestic manufacturer of copper still rely on manual testing.
Through sound judgment to the internal cracks of the circular needs certain technology, magnet manufacturer to each worker needs to be 1 month of intensive training, testing and sorting and need a lot of workers.
Finding a pest with woodpecker by hitting the sound of the trunk, testing must be at the scene of the noisy industrial workers, tap on a circular and listen to the sound to judge circular and internal crack.
The artificial detection method of error detection rate is high, in order to ensure the overall quality of the product, magnet manufacturer also sampling break before they go out for review.
The basic characteristic of the permanent magnetic material parameters are as follows: 1.
Remanence Br unit gaussian (
Coercive force Hcb and Hcj, unit oster (
The maximum magnetic energy product (
Curie temperature TC, the unit ℃.
The highest use temperature (
Maglev train fault 1.
Maglev has one big failing, it cannot change track of the car, unlike railway train from a railway with the switch into the other tracks.
Thus, if is two rail two-way traffic, a track on the train only from a starting point to the finish line, after the end, the original road to return.
Unlike railway train can change track back to another orbit.
Therefore, a track can only accommodate train running back and forth, wasteful.
Magnetic levitation track longer, use efficiency is lower.
Because the magnetic levitation system is made with the electromagnetic suspension, guide and driver function, once the electricity, the maglev will serious safety accidents, so the maglev safety measures when the power is still haven't been solved completely.
Strong magnetic field to the health of people, the balance of ecological environment and the operation of the electronic products will produce adverse effects.
Ferrite is a kind of nonmetallic magnetic materials, also called ferrite.
It is made of ferric oxide and other metal oxide (one or several
For example, nickel oxide, zinc oxide, manganese oxide, magnesium oxide, oxide barium and strontium oxide, etc. )
Preparation of sintering.
Its relative permeability can be as high as several thousand, 1011 times that of the resistivity is metal, eddy current loss is small, suitable for making high frequency electromagnetic devices.
Ferrite have hard magnetic, magnetic, magnetic torque and magnetic, magnetic pressure five classes.
Old say ferrite magnetic material or ferrite, its production process and appearance similar to ceramic, so also known as magnetic porcelain.
Ferrite is one or a combination of iron and other appropriate composite oxide of metal elements.
Property belongs to the semiconductor, usually as a magnetic medium application, ferrite magnetic materials and metal or alloy magnetic materials is one of the most important difference between electric conductivity.
Usually the resistivity of the former is 102 ~ 108 & Omega;
Only 10-20 cm, while the latter
6 ~ 10 -
Magnet company is the specialized production (
Powerful magnet company, has factories in dongguan city based wangniudun pier town.
Magnet products used in toys, jewelry, crafts gifts, handmade gift box, leather handbags invisible magnetic button, plastic hardware products, audio equipment and other industries.
Our company is located in dongguan city based wangniudun block cao beijiao town five chung village industrial zone, the company can provide customers 24 hours delivery, 36 hours to the customers specifications template.
Magnet experts to find and package your satisfaction, more magnets can view our company website WWW information.
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