Manufacturing And Production Technology
The machining of titanium is difficult due to

Chemical reaction between tool and work
High thermal conductivity of titanium
None of these
Low tool-chip contact area

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Manufacturing And Production Technology
Shrinkage allowance on pattern is provided to compensate for shrinkage when

The temperature of liquid metal drops from pouring to freezing temperature
The temperature of solid phase drops from freezing to room temperature
The temperature of metal drops from pouring to room temperature
The metal changes from liquid to solid state at freezing temperature

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