A strip is to rolled from a thickness of 30 mm to 15 mm using a two-high mill having rolls of diameter 300 mm. The coefficient of friction for unaided bite should nearly be:

A strip is to rolled from a thickness of 30 mm to 15 mm using a two-hi

1.	A strip is to rolled from a thickness of 30 mm to 15 mm using a two-high mill having rolls of diameter 300 mm. The coefficient of friction for unaided bite should nearly be:
A.	0.95
B.	0.5
C.	0.25
D.	0.07
Answer» B. 0.5

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A strip is to rolled from a thickness of 30 mm to 15 mm using a two-high mill having rolls of diameter 300 mm. The coefficient of friction for unaided bite should nearly be:

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