Page |1
WMU EDMM 1500 Test 2 Questions and
Correct Answers/ Latest Update / Already
Graded
What are the 3 classifications of casting?
Ans: 1. Expandable mold reusable pattern
2.Expandable mold expandable pattern
3. Permanent mold no pattern
What is a benefit of expandable mold reusable pattern?
Ans: cheap to make
How are expandable mold reusable pattern castings made?
Ans: Through chemically bonded sand systems.
What are expandable mold expandable pattern castings also known
as?
Ans: investment casting or lost wax
What do you do with expandable mold expandable pattern casting
when you're done?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: Throw it away
How long does a die casted permanent mold no pattern take to make?
Ans: 15-30 seconds
What is made from centrifugal permanent mold no pattern casting?
Ans: Pipes
What are the 4 key factors in casting?
Ans: 1. Flow of the molten material into the cavity
2. How it solidifies
3. The cooling rate
4. Type of material
What does a gentle molten metal flow entail?
Ans: minimizes gas and sand entrapment
What does a rapid molten metal flow entail?
Ans: preclude freezing before filling
All rights reserved © 2025/ 2026 |
, Page |3
What does a diversionary molten metal flow entail?
Ans: skims off or filter the slag and contaminants
What is Chvorinov's rule?
Ans: chunky shapes solidify more slowly than think intricate
shapes.
What is green sand made out of?
Ans: recycled sand, water, and a small amount of clay
What is green sand castings tooling cost?
Ans: Low
Explain shell molding.
Ans: Clean sand coated with thermosetting resin, has a
moderate tooling cost.
Explain foam casting.
Ans: Vibrate loose sand off foam patterns, pour molten
material into mold which vaporizes the pattern.
All rights reserved © 2025/ 2026 |
WMU EDMM 1500 Test 2 Questions and
Correct Answers/ Latest Update / Already
Graded
What are the 3 classifications of casting?
Ans: 1. Expandable mold reusable pattern
2.Expandable mold expandable pattern
3. Permanent mold no pattern
What is a benefit of expandable mold reusable pattern?
Ans: cheap to make
How are expandable mold reusable pattern castings made?
Ans: Through chemically bonded sand systems.
What are expandable mold expandable pattern castings also known
as?
Ans: investment casting or lost wax
What do you do with expandable mold expandable pattern casting
when you're done?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: Throw it away
How long does a die casted permanent mold no pattern take to make?
Ans: 15-30 seconds
What is made from centrifugal permanent mold no pattern casting?
Ans: Pipes
What are the 4 key factors in casting?
Ans: 1. Flow of the molten material into the cavity
2. How it solidifies
3. The cooling rate
4. Type of material
What does a gentle molten metal flow entail?
Ans: minimizes gas and sand entrapment
What does a rapid molten metal flow entail?
Ans: preclude freezing before filling
All rights reserved © 2025/ 2026 |
, Page |3
What does a diversionary molten metal flow entail?
Ans: skims off or filter the slag and contaminants
What is Chvorinov's rule?
Ans: chunky shapes solidify more slowly than think intricate
shapes.
What is green sand made out of?
Ans: recycled sand, water, and a small amount of clay
What is green sand castings tooling cost?
Ans: Low
Explain shell molding.
Ans: Clean sand coated with thermosetting resin, has a
moderate tooling cost.
Explain foam casting.
Ans: Vibrate loose sand off foam patterns, pour molten
material into mold which vaporizes the pattern.
All rights reserved © 2025/ 2026 |
