Discussion :: Workshop Technology
- In permanent mould casting method
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A.
Molten metal is poured in a metallic mould, retained in the mould long enough for the outer skin to solidify and finally mould is turned over to remove molten metal still in molten condition |
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B.
Molten metal is poured and allowed to solidify while the mould is revolving |
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C.
Molten metal is forced into mould under high pressure |
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D.
None of the above |
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Answer : Option D
Explanation :
Permanent mold casting is a metal casting process that employs reusable molds , usually made from metal.
The most common process uses gravity to fill the mold, however gas pressure or a vacuum are also used.
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