Workshop Technology
The cold working of metals is carried out

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

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Workshop Technology
A jolt machine is used to

Produce uniform packing of sand in the mould
Produce uniform sand hardness throughout the mould
Ram the sand harder at the back of the mould and softer on the pattern face
Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

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