Workshop Technology
The purpose of a gate is to

Feed the molten metal to the casting in order to compensate for the shrinkage
Delivers molten metal from pouring basin to gate
Act as a reservoir for the molten metal
Delivers molten metal into the mould cavity

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Workshop Technology
Linde welding uses

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

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