mcq2-18

What is the primary purpose of the annealing process?

• To soften the steel
• To increase hardness
• To induce brittleness
• To reduce ductility

What temperature range is typically used for annealing hypoeutectoid steels?

• 50-100°C above the lower critical temperature
• 30-50°C above the upper critical temperature
• 10-20°C below the lower critical temperature
• 50-100°C below the upper critical temperature

How is the cooling rate controlled during annealing?

• Rapid quenching in oil
• Switching off the furnace and slow cooling
• Exposing to air at room temperature
• Submerging in water

What is the purpose of soaking during annealing?

• To increase hardness
• To enhance ductility
• To relieve internal stresses
• To induce brittleness

Which type of steel is annealed at temperatures 50°C above the lower critical temperature?

• Hypereutectoid steel
• Hypoeutectoid steel
• High-speed steel
• Carbon steel