Sand Casting - Engine Blocks

Why are modern engine blocks made from aluminum alloy instead of iron?

• For fuel efficiency

• For increased strength

• For better heat resistance

• For easier machining

What is the primary material used in modern engine blocks?

• Steel

• Iron

• Plastic

• Aluminum alloy

What purpose do the iron liners inserted into the core serve?

• To enhance the engine's power

• To prevent wear from abrasion

• To increase fuel efficiency

• To reduce weight

Why is talcum powder used in some engine block cores?

• To make the mold waterproof

• To improve the mold's heat resistance

• To increase the strength of the mold

• To prevent sand particles from contaminating the oil

What is the purpose of heating the cylinder bore liners before casting?

• To ensure better bonding with aluminum

• To shrink them for a better fit

• To make them easier to remove after casting

• To clean them

Why is the aluminum poured from the bottom of the mold?

• To make the casting process quicker

• To cool it down faster

• To reduce the amount of aluminum used

• To prevent oxidation

What happens to the mold after casting?

• Both B and C

• It's broken down to recycle the sand

• It undergoes a thermal process to strengthen the metal

• It's reused for another casting

What is the purpose of the risers in the casting process?

• To support the mold structure

• To create pathways for gas escape

• To compensate for aluminum shrinkage

• To add extra metal for machining

What is the final step before the engine blocks are sent to engine plants?

• Quality inspection

• Assembly of engine parts

• Final machining

• Painting

How is the quality of each engine block ensured?

• Manual inspection

• Automated vision system

• Pressure testing

• Chemical analysis