A defect in castings in which a discontinuity is formed due to the imperfect fusion of two streams of metal in the mould cavity is known as

Related MCQs

• The defect known as 'drop' occurs when the upper surface of the mould cracks and pieces of sand fall into the molten metal. This defect occurs due to
• If dross and slag along with the liquid metal reach the mould cavity they produce the defect known as
• As compared to green sand in shell moulding cooling rate of cast metal is slow. Hence as compared to green sand castings, shell moulded castings will have
• Which of the following is used on moulds for magnesium castings to prevent metal mould reactions?
• Shrinkage cavity in a casting may be formed due to
• A casting process which can produce cylinders by inserting cores into molten metal poured in the mould is
• A mould which has good erosion resistance to metal flow and is also collapsible is
• Warped castings may be produced due to
• Swelling of castings may occur due to
• Blow holes in castings are due to