Discussion :: Workshop Technology
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Extrusion
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A.
is extensively used for making bolts and nuts
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B.
is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work
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C.
is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
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D.
consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
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Answer : Option D
Explanation :
No answer description available for this question.
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