Workshop Technology
The diaphragm moulding machine is used to

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
Produce uniform packing of sand in the mould
Give uniform sand hardness throughout the mould

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Workshop Technology
Linde welding uses

Neutral flame and leftward technique
Carburising flame and rightward technique
Oxidizing flame and leftward technique
Neutral flame and rightward technique

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