The hardness of the mould is affected by the proportion of ingredients in the sand and

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
• The moulding tool used for finishing/repairing the sand mould after pattern withdrawal is termed as
• The tool used to make small holes in the sand mould to allow passage of gases/steam is known as
• Rammer used for moulding the sand in large mould known as
• Sand grains which give high mould strength are
• The rammer used for packing the sand in pockets/corners of a mould is known as
• Sand acquires a predetermined shape under pressure and retains the same when pressure is removed. This is due to the property of sand 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 facilitates shaking and lifting large pattern from the mould?
• If dross and slag along with the liquid metal reach the mould cavity they produce the defect known as