rolling mill (roʻlingmil)

1. A metal-working establishment using, in connection with heating-furnaces, systems of steel rollers for forming metal into sheets, bars, rods, or wires. Such rolling-mills sometimes bear special names, as a railmill, wire-rolling mill, etc. The e ential feature of a rolling-mill is a set or train of steel rollers placed either in pairs one over the other, as in a two-high train, or in a group of three, as in a three-high train. The heated metal direct from the furnaces is presented to these rollers and is drawn through between the trains. It is at once caught on the other side and repa ed between the rollers, each pa age between them being called a pa . In a two high train the rollers are stopped and reversed at each pa . In a three-high train the rollers turn constantly in one direction, the return pa being between a different pair of rollers from the pair first pa ed through, the mid