Question

Which of the following is the approximate thickness (in mm) of the skin of casting formed at the initial of continuous casting process?

(a) 1 to 5

(b) 10 to 25

(c) 25 to 75

(d) 75 to 150

The question was posed to me in an interview for internship.

My enquiry is from Continuous Casting topic in division Special Casting Techniques of Casting-Forming-Welding I

Answer 1

The correct option is (b) 10 to 25

Explanation: In continuous casting process, the liquid steel is poured into a double-walled, bottomless water-cooled mould where a solid skin is formed quickly and a semi-finished skin emerges from the open mould bottom. The skin formed in the mould is approximately 10 to 25 mm in thickness.