Workshop Technology
The metal is subjected to mechanical working for

All of these
Controlling the direction of flow lines
Reducing original block into desired shape
Refining grain size

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Workshop Technology
The diaphragm moulding machine is used to

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

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