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Which of the following methods is used for the determination of optimum riser size?

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in Casting-Forming-Welding I by (687k points)
Which of the following methods is used for the determination of optimum riser size?

(a) RMS method

(b) Modulus method

(c) Finn method

(d) Ring method

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Asked question is from Riser Design in portion Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

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Correct option is (b) Modulus method

Easy explanation: For the finding of optimum riser size, modulus method is very easy to take in action, and empirically it is also established that if the modulus of the riser exceeds the modulus of the casting by a factor of 1.2, then the feeding during the solidification part of the casting would be satisfactory.

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