Workshop Technology
Linde welding uses

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

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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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