Question

In hot chamber die casting, before the end of the stroke, what uncovers the port?

(a) Injector

(b) Plunger

(c) Burning flame

(d) Die cavity

I had been asked this question during an internship interview.

My enquiry is from Hot Chamber and Cold Chamber Die Casting in division Preventive Maintenance in Foundries & Metal Casting Process of Casting-Forming-Welding I

Answer 1

Correct answer is (b) Plunger

For explanation I would say: In the process of hot chamber die casting, as soon as the stroke ends, there has to be some part which would remove the cover over the port. In hot chamber die casting, before the end of the stroke, it is the plunger that uncovers the port.