Metal Casting Processes and Equipment Quiz

What is the main advantage of casting processes?

• Produce only simple shapes

• Produce small parts only

• Produce complex shapes with internal cavities

• Produce parts with low strength

What is the purpose of risers in casting operations?

• Shape the metal into the desired form

• Remove impurities from the metal

• Cool down the metal quickly

• Supply molten metal to the casting as it shrinks

Which type of mold material lowers fluidity in casting?

• Low thermal conductivity and rough surfaces

• High thermal conductivity and rough surfaces

• Low thermal conductivity and smooth surfaces

• High thermal conductivity and smooth surfaces

What is the purpose of cores in the casting process?

• Form the interior surfaces of the casting

• Remove impurities from the metal

• Provide strength to the mold

• Cool down the metal quickly

Which casting process is suitable for thin-walled complex shapes?

• Die casting

• Investment casting

• Centrifugal casting

• Vacuum casting

What is the main advantage of single-crystal blades in casting?

• Resistant to creep and thermal shock

• Good dimensional accuracy

• Low cost production

• High strength-to-weight ratio

What is the purpose of fluxes in the melting process?

• Increase the melting temperature of the metal

• Refine the molten metal by removing impurities

• Improve the surface finish of the casting

• Reduce the melting time

Which type of furnace is commonly used for melting metal in foundries?

• Induction furnaces

• Electric-arc furnaces

• Cupolas

• Crucible furnaces

What is the main advantage of automation in foundries?

• Maximize manual work, reduce efficiency

• Increase human error, reduce quality level

• Increase labor costs, reduce production rate

• Minimize labor, reduce human error, increase production rate

What is the purpose of rapid solidification in casting?

• Increase micro segregation, reduce grain refinement, decrease solubility

• Increase porosity, decrease grain refinement, reduce strength

• Extend solubility, refine grain structure, reduce micro segregation

• Reduce grain structure, increase micro segregation, decrease solubility