Question

By using resin bonded sand in the making of mould, the stresses produced in the casting can be reduced.

(a) True

(b) False

I got this question in quiz.

My question is taken from Residual Stress in division Cooling and Solidification of Casting-Forming-Welding I

Answer 1

Correct option is (a) True

To elaborate: By using resin bonded sand in the making of mould, the deformability of the mould and core is always improved which helps in reducing the internal stresses in the casting produced. The stresses are also reduced by increasing the holding time of casting in the mould, so as to reduce the difference in temperature distribution.