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FAQ
1.What factors will effect performance
of magnet?
Ambient temperature: since sintered NdFeB
magnet has negative temperature coefficients of remanence Br
and coercivity Hc, the temperature will demagnetize the magnet
to some extent, reversibly or irreversibly. The loss is
also recoverable or irrecoverable.
Environment humidity: NdFeB magnet usually has
to be coated to prevent it from corrosion because the naked
material is very easy rusted and oxidated. Dry environment
will result a long life of the magnet usage.
2.What are the cautions for magnet storage and
transportation?
Humidity and temperature should be controled
at dry and room temperature level. Applying some anti-rusty
oil (machine oil) can protect uncoated magnet very well;
Coated magnet should be insulated from air or vacuum stored.
Charged magnet should be coupled each other to keep away from
pulling other metallic subjects. Always keeping disc, tape,
computer monitors, watches and other magnetic sensitive
subjects far away from the charged magnet to avoid being
deleted or damaged.
Charged magnet should be shielded magnetically
in transportation, especially in air transportation.
3.How to shield or insulate magnetic
field?
Soft magnetic material can be used in
shielding or insulating magnetic field, like the common steel
or iron plate. Thickness of the plate should be considered
carefully because too thin plate may be saturated and can only
duct a part of flux of the field, that will make the shielding
only partially, not fully. Permeability, size and shape will
be the main factors to be considered when selecting the
shielding material.
4.What are the cautions during operating or
handling magnets?
Sintered NdFeB magnet is very brittle but
hard. Its magnetic field is very powerful that can generate a
force of 600 times of its weight. Caution should be to handle
the magnet to avoid any damages to human body or the magnet
itself. Some necessary protection method should be adopted
when handling big block magnets. During installation, some
fixture must be needed.
5.What is the machining cost of the
magnet?
There are mainly three factors that will
influence the machining cost: lot quantity, dimension and
shape, and tolerance.
6.How long is the usage life of the
magnet?
It can be forever as long as the magnet is
used in a proper ambient temperature, humidity, no strong
field, radiation and other factors existed that will shorted
its usage life.
7.What is magnetic component?
An assembly combined of magnet and other iron
or steel parts, that constitute a function product.
8.How to assemble the magnetic
component? Either by fixturing or gluing to combine
magnet and other parts together. The assembling process should
be completed by those experienced professionals. Our comapny
has such experience of MRI, magnetic fridge installation. We
have the ability to provide assembling service to all kinds of
magnetic components. |
