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Method and device for treating surfaces of metallic strip, especially for pickling rolled material

A technology for metal strips and equipment, which is applied to the surface of metal strips, especially in the field of pickling and rolling materials and equipment, can solve the problem of no regulation of guiding pickling medium, etc., and achieve the effect of reducing the burden and improving the relative speed.

Inactive Publication Date: 2005-05-25
SMS DEMAG AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no measures for guiding the pickling medium are specified, except for the nozzle columns at the channel entrance and at the channel exit

Method used

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  • Method and device for treating surfaces of metallic strip, especially for pickling rolled material
  • Method and device for treating surfaces of metallic strip, especially for pickling rolled material
  • Method and device for treating surfaces of metallic strip, especially for pickling rolled material

Examples

Experimental program
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Embodiment Construction

[0030] A device for treating the surface of metal strip 1 and in particular pickled rolling stock is shown by a pickling tunnel in the pickling tank. The strip 1 is guided through the processing tunnel 2 by means of pairs of conveyor rollers arranged at the tunnel inlet 2a and at the tunnel outlet 2b. In this case, the strip 1 is rinsed by jets of acid-containing descaling pickling medium 3 , which streams are sprayed from a plurality of beams with nozzle rows 4 a. The jet 4 is adjusted at the channel inlet 2 a in the strip conveying direction 5 and at the channel outlet 2 b against the strip conveying direction 5 in order to prevent the pickling medium 3 from rapidly flowing away.

[0031] according to figure 1 , in the conveying channel section 6, a jet 4 and a nozzle row 4a oriented opposite to the strip conveying direction 5 are arranged starting from the channel outlet 2b.

[0032] according to figure 2 The deflection element 8, which prevents the pickling medium 3 fr...

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Abstract

Method and device for treating the surface of a metal strip (1) and in particular pickled rolled stock with an acid-containing pickling medium (3) in a treatment channel (2), wherein the jet (4) is treated at the channel inlet (2a) Adjusted along the strip conveying direction (5) and at the channel exit (2b) to be adjusted opposite to the strip conveying direction (5), a closed liquid film with eddy currents is formed on the strip surface, which remains To the channel outlet (2b), between the channel inlet (2a) and the channel outlet (2b), the direction of the additional jet (4) is opposite to the strip conveying direction (5) and passes through the conveying channel section (6) The mechanical restrictor (7) inside further hinders the pickling medium (3) from flowing away at the channel outlet (2b).

Description

technical field [0001] The invention relates to a method and a plant for the treatment of the surface of metal strips and in particular pickling strips, which are passed through a treatment tunnel and rinsed with jets of acid-containing pickling medium, wherein the jet is directed at the entrance of the tunnel Set in the direction of conveying the strip and set the jet at the outlet of the channel counter to the direction of conveying the strip in order to prevent the rapid flow of pickling medium. Background technique [0002] In addition to the laminar flow treatment of the pickling medium, vortex pickling is also known, in which the metal strip runs horizontally and evenly through a channel. The underside of the metal strip bears on the slider. At the entrance to the channel, the strip surface is sprayed with pickling medium sprayed from nozzles, whereby a film of pickled material is formed on the strip surface. At the outlet of the channel, the strip surface is also su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G3/02C23G1/02
CPCC23G3/024C23G3/023C23G3/02
Inventor R·比恩滕H·贝伦斯B·布洛克P·许勒M·海恩特耶斯A·格拉默
Owner SMS DEMAG AG
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