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CBSE Class 9 Answered

permanent magnet
Asked by | 19 Jun, 2008, 07:37: PM
answered-by-expert Expert Answer

Some occur naturally and some are manufactured.

Permanent magnets are manufactured by one of the following methods:

Sintering, (Rare Earths, Ceramics, and Alnicos)
   

Pressure Bonding or Injection Molding, (Rare Earths and Ceramics)
 

Casting, (Alnicos)
 
Extruding, (Bonded Neodymium and Ceramics)
 
Calendering (Neodymium and Ceramics)

you can read more at the following url http://www.magnetsales.com/Design/DesignG.htm

 

Answered by | 21 Jun, 2008, 03:25: PM

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