The hot tearing in a metal casting is due to
| The hot tearing in a metal casting is due to
A. High fluidity
B. High melt temperature
C. Wide range of solidification temperature
D. Low coefficient of thermal expansion
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
Explanation:
- Hot tear is a defect that occurs during the solidification of casting. Though steel is poured at high temperatures, this temperature is low relative to the high freezing temperature range of steel.
- Due to non-uniform cooling, internal stresses can be developed. The stresses will be more than the strength of material and cracks can be expected.