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Mold
Material Selection |
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The two
sand molding methods have relative capabilities, advantages, and costs.
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Molding
Properties |
Requirement |
Green
Sand |
No
Bake Sand |
|
As-cast dimensional tolerance across 1 inch. |
± 30 mils |
± 30 mils |
±
20 mils |
| Nominal
surface finish (RMS) |
350
RMS |
250-500
RMS |
250-350
RMS |
| Intricacy
of detail |
Fair |
Fair
to Good |
Good |
| Set
Up and Mold Prep Time and Effort |
Low |
Low |
Medium |
| Sand
Reclamation and Environmental Costs |
Low |
Low |
Medium |
|
Total Relative Production Cost |
Best
Value |
1X |
2X-3X
Green Sand |
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Given
the requirements for dimensional tolerance, surface finish,
intricacy of detail, and production costs, choose an appropriate
molding material --
GREEN
SAND, NO BAKE SAND
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Back
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Choose a
molding method above |
16 |
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