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Discussion

During normalizing process of steel, the specimen is heated

  • A.Between the upper and lower critical temperature and cooled in still air.
  • B.Above the upper critical temperature and cooled in furnace.
  • C.Above the upper critical temperature and cooled in still air.
  • D.Between the upper and lower critical temperature and cooled in furnace.

Answer: C

Normalising involves prolonged heating just above the critical temperature to produce globular form of carbine and then cooling in air.

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