Device and method for post-treating a metal strip
AssigneeSiemens Vai Metals Technologies GmbH
InventorsStefan Hoedl, Klaus Kofler, Josef Speidl, Alois Stadlbauer
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Abstract
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.
Claims17
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 the event of an interruption in the 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 is arranged at lateral sides of the at least one rinsing stage.
A method for post-treating a pickled metal strip, comprising:
- advancing the pickled metal strip to move in continuous operation through a rinsing zone and removing residues of a pickling agent adhering to the surface of the metal strip in the rinsing zone;
- in the event of an interruption in the continuous advancing operation of the strip or of a sharply reduced speed of advancing of the strip, interrupting the spraying-on of the rinsing fluid zone-wise or completely;
- and
- generating a liquid mist by a unit provided in the rinsing zone for keeping the surface of the metal strip moist at least when continuous advancing is interrupted or is at a reduced speed.
Dependencies are inferred from the claim text.