The defect known as 'drop' occurs when the upper surface of the mould cracks and pieces of sand fall into the molten metal. This defect occurs due to
A)low mould hardness
B)insufficient reinforcement
C)low green strength
D)any of the above

Question

Quizplus · Accepted Answer

The defect known as 'drop' can occur due to various reasons including low mould hardness, insufficient reinforcement, and low green strength. Each of these factors can contribute to the upper surface of the mould cracking and pieces of sand falling into the molten metal.

The Defect Known as 'Drop' Occurs When the Upper Surface