Transverse instability in four-high mills is controlled by the usual guiding methods which on occasions are inapplicable. Its main cause is tilting of the work rolls on their backing rolls. A simplified conception of the strain distribution yields a manageable relationship between asymmetry of load and the roll gap taper. The proximity change between the work and backing roll chocks due to tilting is large compared with the change by symmetrical load and is thus potentially suitable for a signal to control guiding. Transverse rigidity is considered.
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References
1.
SaxlK.Strip guiding and gauge uniformity in breaking down and pendulum rolling. Metals Technology, September 1976, 412.
2.
TurleyJ. W.Extracts from behaviour of rolls in four-high rolling mills. Iron and Steel Engineer, October 1973, 61.
3.
SaxlK.Transverse gauge variation in strip and sheet rolling. Proc. Instn. Mech. Engrs, 1958, 172 (22), 727.
4.
RoarkR. J.Formulas for stress and strain, Second edition, 1958, p. 228 (McGraw Hill, New York, London).
5.
HugginsF. J. G.Roll indentation: its relation to limiting reduction and limiting thickness in cold rolling. J. Inst. Metals, 1966, 11, 238.
