Question: A horizontal true centrifugal casting process is used to make copper bushings with a length of 10 cm, outside diameter of 14 cm, and

A horizontal true centrifugal casting process is used to make copper bushings with a length of 10 cm, outside diameter of 14 cm, and intended inside diameter of 11 cm. The volumetric solidification shrinkage of copper is known to be 6.0%. The linear shrinkage due to thermal contraction after solidification is 1.4%. a) b) c) d) Determine using the formula below the required rotational speed (rpm) in order to obtain a G-factor of 65. 1 G-factor is given by: GF=- Rg When operating at this speed, what is the centrifugal force per square metre (Pa) imposed by the molten metal on the inside wall of the mould? The density of copper is 8.96 g cm-. Determine the actual final dimensions of the bushing. Environmental impact is a major concern in metal production and casting. Discuss future strategies and advancement which may allow metal casting to be sustainably produced, noting their advantages and disadvantages. (3) (6) (5) (6)

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a To determine the required rotational speed rpm to obtain a Gfactor of 65 we can rearrange the Gfactor formula GF v2 R g 3 Where GF Gfactor 65 in this case v rotational speed rpm R radius of the mold ... View full answer

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