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Special type of sand cores is mainly used for the making of hollow part in the centrifugal casting.

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Special type of sand cores is mainly used for the making of hollow part in the centrifugal casting.

(a) True

(b) False

I have been asked this question in a national level competition.

My question is based upon Centrifugal Casting topic in portion Special Casting Techniques of Casting-Forming-Welding I

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Right answer is (b) False

Best explanation: In centrifugal casting, there is no requirement of any core for the making of the concentric hole. As the metal is always pushed outward because of the centrifugal force, application of core is eliminated. Only the oxides and slag part separate from the metal and segregate at the centre.

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