Question

Flame or arc cutting method is used for the removal of dry sand cores from the castings.

(a) True

(b) False

I had been asked this question by my school teacher while I was bunking the class.

I want to ask this question from Casting Cleaning in chapter Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I

Answer 1

The correct answer is:

(b) False

Explanation: Flame or arc cutting is not typically used for the removal of dry sand cores from castings. This method is mainly used for cutting or removing large gates, risers, and metal portions from steel castings. Dry sand cores, on the other hand, are usually removed using mechanical methods such as vibration, knocking, or by washing with air or water to break the sand apart. Flame or arc cutting is not effective or safe for removing sand cores because the high temperatures could cause unwanted damage to the casting or the sand itself.