Multiple choice

In which of the following casting process the expanded polystyrene foam pattern are used?

  1. Investment casting

  2. Evaporative-pattern casting

  3. Lost-foam casting

  4. Full-mold casting
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Full-mold casting is an evaporative-pattern casting process which is a combination of sand casting and lost-foam casting. It uses a expanded polystyrene foam pattern which is then surrounded by sand, much like sand casting. The metal is then poured directly into the mold, which vapourizes the foam upon contact.

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