What is casting and what factors need to be considered when designing a casting part?
A manufacturing engineering question about casting processes and design constraints.
Why Interviewers Ask This
Casting is a common manufacturing method. Interviewers want to ensure you understand draft angles, shrinkage, and gating systems to avoid defects.
How to Answer This Question
Define casting as pouring molten metal into a mold. List factors: draft angles for removal, wall thickness uniformity, shrinkage allowances, and gating system design. Mention common defects like porosity.
Key Points to Cover
- Draft angles
- Wall thickness
- Shrinkage allowance
- Gating system
Sample Answer
Casting involves pouring molten metal into a mold cavity to form a part. Key design factors include adding draft angles for easy removal, maintaining uniform wall thickness to prevent warping, and accounting for material…
Common Mistakes to Avoid
- Ignoring shrinkage
- Forgetting draft angles
- Not mentioning defect prevention
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