Question
Download Solution PDFA casting process in which molten metal is poured into a mold and allowed to solidify while the mold is revolving is known as:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Centrifugal Casting
- Centrifugal casting is a manufacturing process in which molten metal is poured into a rotating mold and allowed to solidify while the mold is revolving at high speed. The rotation of the mold creates centrifugal force, which distributes the molten metal uniformly along the inner surface of the mold. This process is particularly useful for producing cylindrical or hollow components with high structural integrity.
- The centrifugal casting process relies on the principle of centrifugal force. When the mold rotates, the molten metal is forced outward and pressed firmly against the mold walls due to centrifugal force. This pressure ensures that the molten metal fills the mold completely and solidifies with minimal porosity or defects. The mold's rotation also helps in segregating impurities toward the center, which can be removed later.
Steps in the Process:
- Preparation of Mold: The mold is cleaned and coated with a refractory material to prevent the molten metal from sticking to the mold surface.
- Molten Metal Pouring: The molten metal is poured into the rotating mold. The mold is rotated at a controlled speed to generate the required centrifugal force.
- Solidification: As the molten metal comes into contact with the cooler mold surface, it begins to solidify. The centrifugal force ensures uniform distribution of the metal along the mold walls.
- Cooling and Removal: After the molten metal has completely solidified, the mold is stopped, and the casting is removed for further processing.
Advantages of Centrifugal Casting:
- Produces high-quality castings with minimal porosity and defects.
- Ideal for manufacturing cylindrical or hollow components like pipes, tubes, rings, and bushings.
- Requires no cores for hollow castings, simplifying the process.
- Impurities are pushed toward the center due to centrifugal force, making them easier to remove.
- Improved mechanical properties due to the directional solidification and grain structure formed during the process.
Applications:
- Production of pipes, tubes, and bushings in industries like automotive, aerospace, and construction.
- Manufacturing of rings, gear blanks, and other cylindrical components.
- Used in producing castings for chemical and petroleum industries due to its ability to create dense and defect-free components.
Last updated on Jul 15, 2025
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