Topic: Casting
Misrun is a casting defect which occurs due to
- A. Very high pouring temperature of metal
- B. Absorption of gases by liquid metal
- C. Insufficient fluidity of molten metal
- D. Improper alignment of mould flasks
Answer: C. Insufficient fluidity of molten metal
Explanation: A misrun is a defect wherein the molten liquid metal solidifies before completely filling the mould cavity. This is primarily caused by a lack of fluidity in the molten metal, which could be due to a low pouring temperature, slow pouring rate, or thin mold sections.