Manufacturing And Production Technology
During normalizing process of steel, the specimen is heated

Between the upper and lower critical temperature and cooled in still air.
Between the upper and lower critical temperature and cooled in furnace.
Above the upper critical temperature and cooled in furnace.
Above the upper critical temperature and cooled in still air.

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Manufacturing And Production Technology
Which of the following statement is correct about hot machining?

The rate of tool wear is lower.
It is used for machining high strength and high temperature resistant materials.
All of these
It requires less power than machining metals at room temperature.

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