Workshop Technology
Sand wash is a casting defect which

Results in a mismatching of the top and bottom parts of a casting
Occurs as sand patches on the upper surface of a casting
Occurs near the ingates as rough lumps on the surface of a casting
Results in general enlargement of the casting

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Workshop Technology
Linde welding uses

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

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