GATE ME 2015 Set 3 — Question 41
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Manufacturing Processes → Forming → Rolling (Load & Torque)
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Question
In a rolling operation using rolls of diameter , if a thick plate cannot be reduced to less than in one pass, the coefficient of friction between the roll and the plate is ________
Correct answer
0.1 to 0.15
Solution
In rolling, the maximum possible reduction (draft) is given by:Where:
Substituting the values:
The range provided is 0.10 to 0.15.
Substituting the values:
The range provided is 0.10 to 0.15.
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