Permanent Lifting Magnets – Types

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Permanent Lifting Magnets Types Permanent
lifting magnets unlike electromagnets do not
lose their magnetism. They are made from
magnetized ferromagnetic materials such as iron,
cobalt and nickel among others. Alloys such as
rare earth metals as well as naturally occurring
minerals such as lodestone can also be magnetized
to make a permanent lifting magnet. These magnets
are widely used across the globe and this is not
only because of their functionality but also
because of their low maintenance cost. Unlike
electromagnets, they do not rely heaving on
electrical power supply and can stay for very
long before losing their magnetism. There are
quite a number permanent lifting magnets
available in the market today and below are some
of them.
Ceramic Magnets These are made through sintering
and pressing method. They basically consist of
iron oxide and barium. If you are looking for a
functional low cost lifting magnet, this could be
a great choice for you. The affordability of
ceramic magnets is probably one of the factors
making it the most widely used lifting magnet
today. Samarium Cobalt Magnets Unlike the
ceramic magnets, samarium cobalt magnets are
generally very expensive. Some factories
however, especially those dealing with items that
require high resistance to temperature and
corrosio n, have to use this type of magnets.
Samarium cobalt magnets are made from rare earth
metals and as such have very high magnetic
strength. This type of permanent lifting magnet
has excellent resistance to temperature. Neodymi
um Iron Boron Magnets
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These too are made from rare earth metals
and have very high magnetic strength.
Unlike the samarium cobalt however, Neodymium
iron boron magnets are easily oxidized and their
resistance to temperature is also much lower.
These magnets have lower manufacturing costs and
they can be molded into compact
designs. Injection Molded Magnets These magnets
are made of resin and magnetic powder through the
process of injection molding. For factories
desiring complex designed magnets, this might be
the best option they will get. They are however
low energy meaning that their magnetic strength
is considerably lower than other types of
permanent lifting magnets. Alnico Magnets These
magnets are made of nickel, cobalt and aluminum.
Small portions of other elements are also
incorporated in the making of these magnets.
They are produced by sintering and casting where
castings ensure that they have superior energy
and sintering gives them excellent mechanical
characteristics. These magnets can easily be
demagnetized but they have pretty strong
resistance to demagnetization as a result of
shock. Flexible Magnets As the name suggests,
these magnets are very flexible but this depends
on the material used in producing them. Their
production is very similar to that of injection
molded magnets except that these are made into
flat strips and sometimes sheets. They have very
low magnetic strength and therefore ensure to
read the manufacturers manual to know exactly
which type of loads can be lifted using these
magnets. Armed with this information on
different types of permanent lifting magnets
available in the market today, your magnet
procurement process will certainly be much
easier. Article Source http//all-notes.com/per
manent-lifting-magnets-types/