In shell moulding, what happens to the core after cooling?

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Prepare for the Engineering Manufacture OCR R109 Test. Dive into various topics with multiple choice questions, each offering hints and detailed explanations. Get ready to ace your exam!

Multiple Choice

In shell moulding, what happens to the core after cooling?

Explanation:
The main idea is that cores in shell moulding create internal cavities, but they are not part of the finished part. After the metal has cooled and the casting is separated from the shell, the core is knocked out and broken away. This removes the core from the casting and leaves the hollow passages where the core was. Since the core is made of sand with a binder, it isn’t left inside the part or melted into the metal; it’s removed and typically the sand can be reclaimed for reuse.

The main idea is that cores in shell moulding create internal cavities, but they are not part of the finished part. After the metal has cooled and the casting is separated from the shell, the core is knocked out and broken away. This removes the core from the casting and leaves the hollow passages where the core was. Since the core is made of sand with a binder, it isn’t left inside the part or melted into the metal; it’s removed and typically the sand can be reclaimed for reuse.

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