Cores used in PMC are usually made up of?

Related MCQs

• Co2 moulding is mainly used for the increase in strength and hardness of the moulds and cores.
• Which of the following is the most important property of the molding sand in cores?
• Dry sand cores may be required for the provision of spigot at the end section of the casting.
• True centrifugal casting method is usually used to make                      
• Pattern used in shell moulding is normally made up of?
• Electrodes used in spot welding are made up of which material?
• How much time (in a minute) is usually required for the passing of Co2 through the mould?
• A pattern is generally made up of how many pieces?
• In precision investment casting, to make the mould the prepared pattern is dipped into a slurry. From which material is this slurry is made up of?
• volts, I = 200 A, and the cross-sectional area of the weld bead is 30 mm2. Estimate the welding speed if the workpiece and electrode are made of (a) aluminum, (b) carbon steel, and (c) titanium. Use an efficiency of 75%.