Chapter 3 - Rolling of metals

2) Normal friction situation
In the normal case of friction situation in plane strain, the average
pressure p can be calculated as.
From Eq.8,
_
_
σ
p
'
o
P
=
=
1
Q
_
p
Q ( e −1)
bL p
Q ⎤
( e −1)
b R∆
⎥
⎦
2 ⎡ 1
P = o ⎢
h
3 ⎣Q
_
σ
…Eq.9
Where Q = µµµµL p /h
h = the mean thickness between entry and exit from the rolls.
We have …Eq.10
Roll diameter Rolling load
Suranaree University of Technology Tapany Udomphol
Jan-Mar 2007