Slag inclusion in castings is a Production Engineering Mcqs January 20, 2020 BILAL KHATTAK0 A.Superficial defect B.Internal defect C.Moulding defect D.Defect that can be removed by felting E.Surface defect Related Mcqs: Match plate pattern is used in Swell is a defect in castings due to Fetling of castings is done to This new magazine is know for its comprehensive coverage of news. Heat treatment of castings is usually done for For producing several similar parts from a single mould the moulding used is Metal moulds are used in The method in which green sand is generally used is The purpose of using a core in moulding is Line imperfection in a crystal is called