Workshop Technology
The advantage of Thermit welding is that

Results in a minimum problem with internal residual stresses
Weld cools almost uniformly
All parts of the weld section are molten at the same time
All of these

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Workshop Technology
Shift is a casting defect which

Results in a mismatching of the top and bottom parts of a casting
Results in general enlargement 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

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