Sand casting involves the pouring of molten metal into a cavity-shaped sand mould where it solidifies. The mould is made

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Sand Casting Involves The Pouring Of Molten Metal Into A Cavity Shaped Sand Mould Where It Solidifies The Mould Is Made 1 (33.09 KiB) Viewed 17 times

Sand casting involves the pouring of molten metal into a cavity-shaped sand mould where it solidifies. The mould is made of sand particles held together with an inorganic binding agent. After the metal has cooled to room temperature, the sand mould is broken open to remove the casting. (a) Discuss FOUR (4) reasons why silica is the most preferred sand material in sand casting? [8 marks] (b) Figure Q1 (b) is an example of sand casting defect. i. Name the type of sand casting defect. [2 marks] ii. List TWO (2) reasons how the defect could occur? [4 marks) iii. Explain THREE (3) ways on how to prevent the defect? [6 marks) Figure Q1 (b): Sand casting defect