In case of malleable iron castings, the contraction allowance on pattern
A)is independent of section thickness
B)increass as the section thickness of casting increases
C)decreases as the section thickness of casting increases

Question

Quizplus · Accepted Answer

The contraction allowance on patterns for malleable iron castings decreases as the section thickness of the casting increases. This is because thicker sections cool more slowly, leading to less contraction.

In Case of Malleable Iron Castings, the Contraction Allowance on Pattern