Device and method for post-treating a metal strip

摘要

A device and method for post-treating a metal strip, wherein a pickled metal strip (2) coming from a pickling zone is advanced continuously through a rinsing zone (4) in which residues of a pickling agent adhering to the surface (11) of the metal strip (2) are removed by spraying the metal strip with rinsing fluid. At least one device (8) for generating a liquid mist (9) is provided in the rinsing zone (4). The device (8) can moisten the surface (14) of the metal strip (2) during an interruption of the continuous operation or of a sharply reduced speed of the strip. The device (8) has mist spraying jets above the surfaces of the metal strip.

主权项

1. A device for post-treating a pickled metal strip comprising:
a device for advancing a pickled metal strip in continuous operation through a rinsing zone through which the pickled metal strip is advanced, the rinsing zone is comprised of a plurality of rinsing stages arranged in succession; a spraying apparatus in the rinsing zone configured to remove residues of a pickling agent adhering to a surface of the metal strip by spraying a rinsing agent on the surface of the strip; in response to an interruption in continuous operation or of a sharply reduced speed of advancing of the strip, the rinsing zone is configured to interrupt the spraying of the rinsing fluid zone-wise or completely; a unit provided at least in one of the rinsing stages in the rinsing zone, for generating a liquid mist, and the unit is configured for moistening the surface of the metal strip; and the unit comprises atomizing nozzles that generate the liquid mist, the atomizing nozzle being arranged at lateral sides of the at least one rinsing stage to introduce the liquid mist in a direction perpendicular to the direction of movement of the metal strip, toward the edges of the metal strip, and parallel to the opposing surfaces of the metal strip.