How can we enhance the feeding distance during casting?(a) Reducing molten metal temperature(b) Increase fluidity(c) By using low thermal conductivity mold(d) Using sand moldI had been asked this question by my school principal while I was bunking the class.This interesting question is from Riser Design topic in chapter Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

How can we enhance the feeding distance during casting?(a) Reducing mo

1.	How can we enhance the feeding distance during casting?(a) Reducing molten metal temperature(b) Increase fluidity(c) By using low thermal conductivity mold(d) Using sand moldI had been asked this question by my school principal while I was bunking the class.This interesting question is from Riser Design topic in chapter Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I
Answer» Correct option is (b) Increase fluidity The EXPLANATION: Feeding distance REDUCES by reducing molten METAL temperature and using a low thermal CONDUCTIVE mold. For sand casting, feeding distance will be low because HEAT extracted by sand is very less compared to metals. By increasing fluidity, metal can flow over a long distance which results in higher feeding distance.

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