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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

To Prepare a pattern for given object for lost foam casting process

Choose difficulty:

Beginner

Intermediate

Advanced

What type of sand is used in lost foam casting? (LO1)

a: Greensand Explanation

Explanation

b: Resin-bonded sand Explanation

Explanation

c: Unbonded dry sand Explanation

Explanation

d: Core sand Explanation

Explanation

What material is used to coat the foam pattern in lost foam casting? (LO1)

a: Wax Explanation

Explanation

b: Ceramic Explanation

Explanation

c: Permeable refractory slurry Explanation

Explanation

d: Green sand Explanation

Explanation

. What happens to the foam pattern when molten metal is poured into the mould? (LO1)

a: It melts and mixes with the metal Explanation

Explanation

b: It expands and strengthens the mould Explanation

Explanation

c: It vaporises completely, leaving a cavity for metal Explanation

Explanation

d: It hardens to form the final shape Explanation

Explanation

What is a major disadvantage of lost foam casting? (LO3)

a: High production speed Explanation

Explanation

b: High pattern costs for low-volume production Explanation

Explanation

c: Inability to cast large components Explanation

Explanation

d: Limited material choices Explanation

Explanation

What is the typical surface finish achieved in lost foam casting? (LO1)

a: 10-50 µm Explanation

Explanation

b: 2.5-25 µm Explanation

Explanation

c: 50-100 µm Explanation

Explanation

d: 100-200 µm Explanation

Explanation

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