Kindly answer the question below without any links or hints : Whay molten silver cannot be used for sharp castings ? Share with your friends Share 0 Geetha answered this 1. The casting of silver bars in closed moulds results in solidification of the silver inthe sprue (passage), which has to be carefully removed. 2. As the material is a sharp edge one, it produces some porosity and cavities during casting, in which during quenching some water may go inside causing tarnishing of silver. 3. Molten silver absorb oxygen from the atmosphere and spit the oxygen on solidification.This makes the surface apperarance to be worst. 0 View Full Answer
