Fins and spines on the casting is seen due to_______________?
Correct answer: A. Rapid heating me
- A. Rapid heating me
- B. Prolonged heating:
- C. Water film contamination
- D. Too high pressure during casting
Explanation
Rapid heating can crack the investment, allowing molten alloy to enter the cracks and form thin fins or spines on the casting. Excessive casting pressure is associated with other defects, not typically these investment fins.
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