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The process of making hollow castings of non circular shape and desired thickness of non circular shape and desired thickness by permanent mould without use of core is known as
- a)die casting
- b)Slush casting
- c)Pressed casting
- d)Centrifugal casting
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
The process of making hollow castings of non circular shape and desire...
Slush casting is a process of making hollow castings of non-circular shape and desired thickness by a permanent mould without using a core. This process is widely used in the manufacture of decorative and ornamental articles, toys, and automotive parts.
Process of Slush Casting:
1. Preparation of the mould: The mould used in slush casting is made of metal or any other suitable material. The mould is prepared in such a way that it has the desired shape and thickness of the casting.
2. Preheating the mould: The mould is preheated to a temperature slightly higher than the melting point of the material to be cast. This is done to avoid sudden solidification of the molten material when it comes in contact with the mould.
3. Pouring the material: The molten material is poured into the mould. The mould is then rotated slowly in different directions to ensure that the entire surface of the mould is coated with a thin layer of the molten material.
4. Draining the excess material: After the mould is completely coated with the molten material, the excess material is drained out of the mould. The thickness of the casting can be controlled by varying the duration of the coating process.
5. Cooling and solidification: The mould is then cooled slowly to allow the molten material to solidify. Once the casting is solidified, it is removed from the mould. The surface of the casting is then finished by grinding, polishing, or painting.
Advantages of Slush Casting:
1. The process is simple and cost-effective.
2. It is suitable for producing hollow castings of non-circular shapes and different thicknesses.
3. The process does not require the use of a core, which reduces the cost of production.
4. The surface finish of the casting is smooth and uniform.
5. The process can be automated, which increases the production rate and reduces labor costs.
Conclusion:
Slush casting is a simple and cost-effective process for producing hollow castings of non-circular shapes and different thicknesses. The process does not require the use of a core, which reduces the cost of production. The surface finish of the casting is smooth and uniform, making it suitable for decorative and ornamental articles, toys, and automotive parts.
Process of Slush Casting:
1. Preparation of the mould: The mould used in slush casting is made of metal or any other suitable material. The mould is prepared in such a way that it has the desired shape and thickness of the casting.
2. Preheating the mould: The mould is preheated to a temperature slightly higher than the melting point of the material to be cast. This is done to avoid sudden solidification of the molten material when it comes in contact with the mould.
3. Pouring the material: The molten material is poured into the mould. The mould is then rotated slowly in different directions to ensure that the entire surface of the mould is coated with a thin layer of the molten material.
4. Draining the excess material: After the mould is completely coated with the molten material, the excess material is drained out of the mould. The thickness of the casting can be controlled by varying the duration of the coating process.
5. Cooling and solidification: The mould is then cooled slowly to allow the molten material to solidify. Once the casting is solidified, it is removed from the mould. The surface of the casting is then finished by grinding, polishing, or painting.
Advantages of Slush Casting:
1. The process is simple and cost-effective.
2. It is suitable for producing hollow castings of non-circular shapes and different thicknesses.
3. The process does not require the use of a core, which reduces the cost of production.
4. The surface finish of the casting is smooth and uniform.
5. The process can be automated, which increases the production rate and reduces labor costs.
Conclusion:
Slush casting is a simple and cost-effective process for producing hollow castings of non-circular shapes and different thicknesses. The process does not require the use of a core, which reduces the cost of production. The surface finish of the casting is smooth and uniform, making it suitable for decorative and ornamental articles, toys, and automotive parts.
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The process of making hollow castings of non circular shape and desired thickness of non circular shape and desired thickness by permanent mould without use of core is known asa)die castingb)Slush castingc)Pressed castingd)Centrifugal castingCorrect answer is option 'B'. Can you explain this answer?
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