A casting defect which results in general enlargement of a casting is known as
A
Shift
B
Sand wash
C
Swell
D
Scab
Correct Answer: Swell
A swell occurs when the mold wall gives way across a whole face, and is caused by an improperly rammed mold.Burn-on occurs when metallic oxides interact with impurities in silica sands.
The result is sand particles embedded in the surface of the finished casting.