Correct option is A
Runner Function:
Distributes molten metal horizontally from the sprue (vertical channel) to the gates (entry points into the mold cavity).
Ensures even flow and reduces turbulence.
Design Considerations:
Cross-section: Typically rectangular or trapezoidal to optimize flow.
Placement: Located at the parting line of the mold for easy removal.
Pouring Basin:
The entry point where molten metal is poured.
Sprue:
A vertical channel that carries molten metal from the pouring basin downward.
Runner:
A horizontal passage that distributes molten metal from the sprue to the gate.
It acts like a distributor pipe.
Gate (or Ingate):
Connects the runner to the mold cavity.
Controls flow and minimizes turbulence.
Riser (Feeder):
Supplies additional molten metal to compensate for shrinkage during solidification.
