Machine Design
Question With Answer (QWA)
Manufacturing Consideration :
The metal is subjected to mechanical working for --------.
Answer -
Refining grain size .
Reducing original block into desired shape .
Controlling the direction of flow lines .
The castings produced by forcing molten metal under pressure into a permanent metal mould is known as -------.
Answer - Die Casting.
The temperature at which the new grains are formed in the metal is called --------.
Answer - Recrystallisation Temperature.
The hot working of metals is carried out -------.
Answer - Above the recrystallisation Temperature.
During hot working of metals -----.
Answer -
Porosity of the metal is largely eliminated.
Grain Structure of the metal is refined.
Mechanical properties are improved due to refinement of grains.
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