Bissoy.com
Doctors Medicines MCQs Q&A

In the mechanized foundry, removal of casting from mould is not easy and it is generally performed manually.

In the mechanized foundry, removal of casting from mould is not easy and it is generally performed manually. Correct Answer False

In a mechanized foundry, castings are knocked out from the moulds on a vibratory grid at the knock outstation and sand passes down into a hopper through the grid, and then the castings vibrate off into the cooling trays. This makes the removal very easy with less effort and without damaging the castings.

Related Questions

At the mould exit of a continuous caster, the metal consisting of a solidified shell with a liquid metal core exits at the rate of 35 kg S-1. Given that the latent heat of fusion is 3 × 105 J kg-1 and the total rate of heat removal by the mould is 4.2 × 106 W, the mass fraction of solid at the mould exit is . . . . . . . .
Assume that both while solid and liquid remain at the melting point, they are in the mould.
In the mechanized foundry, insertion of cores in mould is very easy and normally done with high tech machines.
In the mechanized foundry, the process of solidification is done manually and it is not affected by any tool of mechanization.
A 250 mm by 250 mm ingot casting, 1.5 m high and at 1225 K temperature, is stripped from its mold. The casting is made to stand on end on the floor of a large foundry whose wall, floor and roof can be assumed to be at 300 K temperature. Make calculation for the rate of radiant heat interchange between the casting and the room. The casting material has an emissivity of 0.85
Operating cost involved in the mechanized foundry is more than the cost of any other simple foundry for large production of castings.
Using sand in mould mixture can cause problems to machines in the mechanized foundry.
In the mechanized foundry, rubber coated chills are used for supporting the cores in the mould system.
Sand with high bond strength can lessen the amount of moisture in mould of a mechanized foundry.
In permanent mould casting, the mould is pre-heated to its operating temperature before the actual use of mould.
In the mechanized foundry, using of synthetic sand in moulding makes a casting of better quality.