Workshop Technology
The hot working of metals is carried out

At any temperature
Above the recrystallisation temperature
Below the recrystallisation temperature
At the recrystallisation temperature

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Workshop Technology
In permanent mould casting method

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
None of these
Molten metal is forced into mould under high pressure
Molten metal is poured and allowed to solidify while the mould is revolving

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