Abstract: A device for automatically wrapping a strip of metal to be rolled partly around upper and lower working rolls in the form of S or inverted S in a safeguarded and simplified manner.

Abstract: A device for blasting descaling slurry jets against the surfaces of sheet metal is disclosed, thereby descaling the same prior to cold rolling.

Abstract: A descaling slurry is applied to a surface of an elongated metal strip from a nozzle array while the strip is moving in the direction of its length. The nozzle array is positioned in spaced relation to the strip surface and extends transversely to the strip at an acute angle so that the individual slurry streams emanating from the nozzles do not intersect and strike the strip in a line at the same acute angle as the nozzle array. The nozzles of the array are directed toward the strip surface at an acute spray angle in the direction of movement of the strip.

Abstract: An installation for the production of continuously cold rolled sheets or strips wherein the continuous operation is effected when a coil of the cold rolled sheet metal or strip is directly and effectively produced from a coil of the hot rolled sheet metal or strip.

Abstract: A liquid containing abrasives is projected through nozzles under high pressure upon the surface of an object to be treated such as sheet steel to descale and clean the surface thereof, and the projected abrasive liquid is recovered so that abrasives of suitable particle sizes may be reused. The jet liquid is a mixture of high pressure liquid and slurry abrasives which are substantially uniform in density and granular size. The mixed slurry after projection against the sheet steel workpiece is returned to a vertical style classifier before it settles to the bottom of the collecting tank. The scales which are removed from the sheet steel workpiece are separated out in the classifier while at the same time the density and the granular sizes of the abrasives are made uniform. In addition, the minuscule abrasives are caused to overflow from the classifier while the liquid and the slurry abrasives made uniform in density and granular size are conveyed to the nozzles.