Question

Collapsibility of the core material is not considered in the core making process.

(a) True

(b) False

The question was asked in semester exam.

The doubt is from Forces Acting on Cores and Mold topic in section Mold and Mold Making of Casting-Forming-Welding I

Answer 1

Correct answer is (b) False

For explanation: Collapsibility of the core material is very important and required in the core making process because after the solidification the core is pressurized from all the sides due to contraction of molten metal in the mould. So, the core is expected to collapse under these situations. And if it does not collapse then it causes defects like hot tearing and cracks in the castings.