Method and apparatus for applying a lubricant while rolling metallic rolled stock

Apparatus for applying a lubricant into the roll aperture of a roll stand, the roll aperture configured for receiving a metallic rolled strip being fed there through, the apparatus comprising:

• an atomizing device to which the lubricant and a carrier gas is fed to produce a mixture of lubricant and carrier gas;
• and
• an arrangement of spray nozzles which arc connected to the atomizing device,
• wherein the mixture is fed to each spray nozzle via connecting lines,
• wherein the arrangement is configured such that each spray nozzle produces a spray jet having an essentially flat cross-section, and which spray jet is directed onto at least one of a surface of a working roll and a surface of the rolled strip,
• wherein each spray nozzle includes an orifice piece having a convex exterior surface with at least two discharge openings arranged on the orifice piece to produce a spray jet having an essentially flat cross-section,
• wherein said openings are C-shaped, symmetrical slots when viewed in a direction opposite to direction of outflow of lubricant,
• wherein each slot is located on a respective side of an axis of symmetry of said orifice piece,
• wherein each slot is an incision in the orifice piece which lies in a plane,
• wherein the respective planes of the at least two slots are at an angle to one another,
• wherein the at least two discharge openings have limbs pointing away from the axis of the symmetry, and
• wherein the slots are adjacent one another at the apex of said convex exterior surface.