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Alnico Magnet

Alnico is an alloy produced by mixing aluminum, nickel and cobalt with certain addition of other metals like copper, iron and titanium. Capable of producing strong magnetic field, it has an excellent linear temperature characteristics and has wide industrial applications.

Types of Alnico Magnets
On the basis of manufacturing process and application alnico can be grouped into following types:

Features

Alnico's are the strong magnets which can produce strong magnetic fields.
Excellent resistance to corrosion
They have superior thermal stability
These magnets have some of the highest curie points of any magnetic material ranging around 800^oC
Some type of Alnico's are isotropic
They have high magnetic flux density

Applications
Alnico magnets have applications in the following areas:

Electric motors
Electric guitar pickups
Sensors
Loudspeakers
Cow magnets
Automotive and electronic sensors
Actuators
Hall effect sensors
Magnetron
Reed switches
TWT amplifiers
Communication

Manufacturing Process
Casting or sintering process is applied for making alnico magnets. The first step involves the pouring of molten metal alloys into moulds. Later it is passed through various heat cycles. The resultant magnets have rough surface which after machining gives a glossy look.

Sintered magnets are produced by compacting fine alnico powder in a press, and then sintering the compacted powder into a solid magnet.

Alnico magnets can only be magnetized only in the field having magnetizing fields of about 3 kOe. Since these magnets have low coercivity they, must be protected from the adverse repelling fields as this could partially demagnetize the magnets.

Magnetizing
After the tolerance magnetizing is effected. As alnico magnets are brittle, theymust be protected from hard blows and handled with care. It should be magnetized in a proper magnetic field and must be prevented from the repelling fields as it is prone to demagnetization.

Profile :

Sonal Magnetics based in Ahmedabad (Gujarat), India is one of the biggest & leading company in the manufacturing of permanent magnetic equipments, rare earth equipments and all type of magnetic appliances. Established as a distinctly independent corporate entity, (EST 1990), a pioneering company in the field of permanent magnetic equipments in India. These entrepreneurs have been providing all type of magnetic appliances to the industries for more than 10 yrs and have also been providing consultancy services to meet the requirements of the Indian and foreign industries, in this field over the period. This expertise is now being utilized for designing, manufacturing, and installing optimum solutions to meet the desired needs of the customers.

With quality as the backbone of company philosophy, Sonal Magnetics has stead fast moved ahead in its journey towards present day leadership in the field of industrial permanent magnetic equipments, rare earth equipments and all type of magnetic appliances. Today the companys name is synonymous with magnetic appliances and other solutions in this field and services being utilized in most of the major industrial houses in India. As a part of its quality policy, Sonal Magentics has constantly endeavored to incorporate the most modern technology in its products and the combination of this latest technology, along with high quality services which ensures our customers outstanding reliability and value for money.