Workshop Technology
The hot working of metals is carried out

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

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Workshop Technology
Riddle is used for

Cleaning the moulding sand
Moistening the sand around the edge before removing pattern
Reinforcement of sand in the top part of moulding box
Smoothing and cleaning out depressions in the mould

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