Neodymium Disc Magnet Has A Low Coercive Force


A permanent magnet is an object made from a material that is magnetic and creates its own persistent Neodymium Disc Magnet factory. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door.

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  What is a permanent magnet?

  A permanent magnet is an object made from a material that is magnetic and creates its own persistent Neodymium Disc Magnet factory. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door.

  Permanent Magnets Materials

  AlNiCo

  Ceramic

  SAMARIUM COBALT

  NEODYMIUM

  Some of the shapes of permanent magnets come in:

  Ring Magnets

  Bar Magnets

  Disc Magnets

  Cylinder Magnets

  Cube Magnets

  Magnetic Balls

  Block Magnets

  Horseshoe Magnets

  Pyramid Magnets

  Rod Magnets

  Wedge Magnets

  Alnico Magnets Characteristics

  Excellent temperature stability, high residual induction, and relatively high energies characterize Alnico materials, composed primarily of alloys of Aluminum, Nickel, and Cobalt. They are manufactured through either a casting or sintering process. Cast magnets may be manufactured in complex shapes, such as horseshoes, not possible with other magnet materials. Sintered Alnicos offer slightly lower magnetic properties but better mechanical characteristics than cast Alnicos.

  Alnico is hard and brittle. Machining or drilling cannot therefore be accomplished by ordinary methods. Holes are usually cored in at the foundry, and magnets are cast close to final size and then finish machined to closer tolerances.

  Alnico has a low coercive force, and is easily demagnetized if not handled with care. For optimum performance of Alnico 5, the magnetic length should be approximately 5 er magnet should be about 1.250" long. Because of its higher coercivity, Alnico 8 may be used in shorter lengths and in disc shapes.

  Ceramic Magnets

  Attributes of Ceramic Material

  High intrinsic coercive force

  Tooling is expensive

  Least expensive material compared to alnico and rare earth magnets

  Limited to simple shapes due to manufacturing process

  Lower service temperature than alnico, greater than rare earth

  Finishing requires diamond cutting or grinding wheel

  Lower energy product than alnico and rare earth magnets

  Most common grades of ceramic are 1, 5 and 8 (1-8 possible)

  Grade 8 is the strongest ceramic material available

  Applications of Ceramic Magnets

  Speaker magnets

  DC brushless motors

  Magnetic Resonance Imaging (MRI)

  Magnetos used on lawnmowers and outboard motors

  DC permanent magnet motors (used in cars)

  Separators (separate ferrous material from non-ferrous)

  Used in magnetic assemblies designed for lifting, holding, retrieving and separating

  Rare Earth Magnets (Samarium Cobalt Neodymium)

  Collectively known as Rare Earth magnets, Samarium Cobalt (SmCo) and Neodymium Iron Boron (NdFeB) magnets are alloys of the Lanthanide group of elements. Rare Earth magnets are the most advanced commercialized permanent magnet materials today. SmCo magnets are available in a number of different grades that span a wide range of properties and application requirements. SmCo magnets are brittle and machining operations should be performed prior to magnetization, using diamond tools. We are equipped to fabricate these materials to blueprint specifications.

  Samarium Cobalt

  Attributes of Samarium Cobalt Material Applications of Samarium Cobalt Magnets

  Computer disc drives High resistance to demagnetization

  High energy (magnetic strength is strong for its size)

  Good temperature stability

  Expensive material (cobalt is market price sensitive)

  Computer rigid disc drives, printers and speakers

  Neodymium Magnets

  Neodymium magnets (Nd-Fe-B) are composed of neodymium, iron, boron and a few transition metals. These magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs.

  Attributes of Neodymium Material

  Very high resistance to demagnetization

  High energy for size

  Good in ambient temperature

  Low working temperature for heat applications, but higher levels of heat resistance materials are being introduced periodically

  Sensors

  Traveling wave tubes

  Linear actuators

  Satellite systems

  Motors where temporary stability is vital

  Samarium cobalt magnets SmCo) are composed of samarium, cobalt and iron.

  Samarium Cobalt

  Attributes of Samarium Cobalt Material Applications of Samarium Cobalt Magnets

  Applications of Neodymium Magnets

  Magnetic separators

  Linear actuators

  Microphone assemblies

  Servo motors

  DC motors (automotive starters)

  Attributes of Samarium Cobalt Material Applications of Samarium Cobalt Magnets

  Rare Earth Magnets (Samarium Cobalt Neodymium)

  Collectively known as Rare Earth magnets, Samarium Cobalt (SmCo) and Neodymium Iron Boron (NdFeB) magnets are alloys of the Lanthanide group of elements. Rare Earth magnets are the most advanced commercialized permanent magnet materials today. SmCo magnets are available in a number of different grades that span a wide range of properties and application requirements. SmCo magnets are brittle and machining operations should be performed prior to magnetization, using diamond tools. We are equipped to fabricate these materials to blueprint specifications.

  Computer disc drives High resistance to demagnetization

  High energy (magnetic strength is strong for its size)

  Good temperature stability

  Expensive material (cobalt is market price sensitive)

  Do not hesitate to contact us,as an professional Sm2Co17 Magnet manufacturer, We will offer the best service for every customer.

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