Production Officer Interview Question:

Tell me what is the need of riser in moulding?

Submitted by: Muhammad

Explained riser as a checking process to confirm the molten metal has filled the cavity or not.but interviewer didnot agree indicating me for any other reason.closed my eye and took 5 sec and explained.

riser works as a backup reservior of molten metal when the cavity metal volume shrinks due to solidification.
Submitted by: Muhammad