Which process forms hollow metal parts using resin-coated sand in a mould with two heated halves?

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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

Which process forms hollow metal parts using resin-coated sand in a mould with two heated halves?

Explanation:
Shell moulding uses resin-coated sand to build a thin, rigid shell around a pattern. The mold is formed with two heated halves (cope and drag), which cure the resin binder as the shell is created. After the shell is cured, the pattern is withdrawn and the two halves are joined to form a hollow cavity. Molten metal is then poured to fill this cavity, producing hollow metal parts with smooth surfaces and tight tolerances. This method is ideal for small to medium-sized parts with intricate shapes, where thin wall sections and good surface finish are important.

Shell moulding uses resin-coated sand to build a thin, rigid shell around a pattern. The mold is formed with two heated halves (cope and drag), which cure the resin binder as the shell is created. After the shell is cured, the pattern is withdrawn and the two halves are joined to form a hollow cavity. Molten metal is then poured to fill this cavity, producing hollow metal parts with smooth surfaces and tight tolerances. This method is ideal for small to medium-sized parts with intricate shapes, where thin wall sections and good surface finish are important.

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