i) A series of cold rolling operations are to be used to reduce the thickness of...

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Mechanical Engineering

i) A series of cold rolling operations are to be used to reducethe thickness of a metal plate from 50 mm to 20 mm in a reversingtwo-high mill. Roll diameter is 600 mm, and coefficient of frictionbetween rolls and work is 0.15. The specification is that the draftis to be equal on each pass. Determine:

(a) Minimum number of passes required

(b) Draft for each pass

ii) Suppose that the percent reduction rather than the draftwere specified to be equal for each pass.

(a) Determine the minimum number of passes required

(b) Determine the draft and exiting stock thickness for eachpass

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