MCQOPTIONS
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MCQOPTIONS
| 1. |
In process annealing, the hypo eutectoid steel is |
| A. | Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air |
| B. | Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium |
| C. | Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace |
| D. | Heated below or closes to the lower critical temperature and then cooled slowly |
| Answer» E. | |