Multiple choice

During normalizing process of steel the specimen is heated

  1. between the upper and lower critical temperature and cooled in still air

  2. above the upper critical temperature and cooled in furnace

  3. above the upper critical temperature and cooled in still air

  4. between the upper and lower critical temperature and cooled in furnace
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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

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