GATE MT 2012 Q24. The riser is designed such that the melt in the riser solidifies
GATE MT 2012 Q24. The riser is designed such that the melt in the riser solidifies
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Correct answer is option C. A riser, also known as a feeder, is a reservoir built into a metal casting mould to prevent cavities due to shrinkage . Most metals are less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify. Risers prRead more
Correct answer is option C.
A riser, also known as a feeder, is a reservoir built into a metal casting mould to prevent cavities due to shrinkage . Most metals are less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify. Risers prevent this by providing molten metal to the casting as it solidifies, so that the cavity forms in the riser and not the casting.
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