Patent ID: 7266984

Claim:
Process for roll lubrication, especially for roll nip lubrication, in rolling stands for rolled strip with an oil-in-water dispersion under maintenance of both a predetermined mixture characteristic and a volume flow rate of the dispersion, where this dispersion is prepared in a mixer ( 1 ) with adjustable quantitative ratios of water and oil to obtain a homogeneous dispersion, the dispersion then being discharged to various spray zones (Zi) for distribution over variable widths (Bi), and where at least one row of nozzles (Di), each of which is controlled by at least one on-off valve (Si), is assigned to each spray zone (Zi) with an assignable strip spray width (Bi), wherein the total amount of dispersion for one spray zone (Zi) is discharged through only one on-off valve (Si), each row of nozzles (Di) is designed so that, after the one on-off valve (Si) has been actuated and under the assumption that the complete set of nozzle bores of an individual row is being used, each row will have the same volume flow rate as each other row of nozzles, with the result that the flow conditions in the mixer ( 1 ) are the same for each spray zone (Zi).