The first mention of a tandem rolling mill is Richard Ford's 1766 English patent for the hot rolling of wire. In 1798 he received another patent, this time for the hot rolling of plates and sheets … See more

A useful formula for the compression curve of steel is:
where
• K … See more

In the 1980's it became possible for digital displays to replace hard-wired headboard-mimics and operator control/display panels.
The descriptions below are based on the upgrade of BlueScope Steel's 5 stand cold mill in 1985. See more

The mill stand spring curve is obtained by pressing the work rolls together with increasing force. This causes the work rolls to bend, the screw-downs to compress and the mill housings to stretch. To reduce work roll bending, a much larger roll is … See more

For a rolling mill to operate, the work roll gap is set prior to the product entering the mill. Originally this setting was empirical; that is, set by the operators according to their experiences of … See more

The control of a tandem rolling mill is multi-layered.
Two examples are shown for BlueScope Steel's No.2 temper mill with the exit stand configured for strip shape (flatness).
At the lowest level is the current/voltage control of the See more

These definition only apply to the rolling of slabs, plates and strip in a rolling mill.
Reduction
Reduction, r is … See more