Annealing of aluminium castings

Related MCQs

• For annealing of aluminium it is heated to
• 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 heat treatment is applicable to aluminium alloy castings?
• Aluminium castings are not repaired by
• In case of cored aluminium castings, the contraction allowance is
• Normal shrinkage allowance for aluminium is 18 mm per metre and that for cast iron 10 mm per metre. If the metal pattern is to be made of aluminium and the casting is to be of cast iron, the shrinkage allowed on wooden master pattern will be
• In small castings which of the following allowance can be ignored?
• Heat treatment of castings is usually done for
• Warped castings may be produced due to
• 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