Question

Manufacturing process is the only consideration which can cause residual stresses in the casting.

(a) True

(b) False

I got this question in an international level competition.

This intriguing question comes from Residual Stress in division Cooling and Solidification of Casting-Forming-Welding I

Answer 1

Right choice is (b) False

For explanation: Manufacturing process is not only the single consideration which can cause stress. Residual stresses may be present in any mechanical component because of many causes. Residual stresses can be due to the technological process used to make the parts of casting, but manufacturing processes are the most common causes of residual stress.