Question:
Identify the casting defect shown in the given figure:
Identify the casting defect shown in the given figure:
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Misrun always indicates insufficient fluidity of molten metal.
Updated On: Jun 29, 2026
- Porosity
- Hot Tears
- Swell
- Misrun
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The Correct Option is D
Solution and Explanation
Concept:
Casting defects occur due to improper filling, solidification shrinkage, gas evolution, or mould wall failure.
Step 1: Understand misrun defect.
A misrun occurs when molten metal solidifies before completely filling the mould cavity. This leads to incomplete casting. Main reasons:
• low pouring temperature
• poor fluidity
• thin sections in mould
Step 2: Differentiate from other defects.
• Porosity → gas cavities inside casting
• Hot tears → cracks due to thermal stress
• Swell → bulging of mould due to weak sand
Step 3: Identify feature.
Since the defect shows incomplete filling, it corresponds to misrun. Final Answer: \[ \boxed{\text{Misrun}} \]
Step 1: Understand misrun defect.
A misrun occurs when molten metal solidifies before completely filling the mould cavity. This leads to incomplete casting. Main reasons:
• low pouring temperature
• poor fluidity
• thin sections in mould
Step 2: Differentiate from other defects.
• Porosity → gas cavities inside casting
• Hot tears → cracks due to thermal stress
• Swell → bulging of mould due to weak sand
Step 3: Identify feature.
Since the defect shows incomplete filling, it corresponds to misrun. Final Answer: \[ \boxed{\text{Misrun}} \]
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