Production method for hot rolled acid-pickling plate without yellowing surface

A production method, hot-rolled pickling technology, applied in the direction of liquid cleaning method, chemical instrument and method, cleaning method and utensils, etc., can solve the problem of high yellowing and sealing rate of pickling machine board surface

Active Publication Date: 2021-02-09
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for producing hot-rolled pickling plates without yellowing on the surface, which solves the problem of high sealing rate of yellowing on the surface of pickling machines

Method used

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  • Production method for hot rolled acid-pickling plate without yellowing surface
  • Production method for hot rolled acid-pickling plate without yellowing surface

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] The invention provides a technical solution: a method for producing hot-rolled pickled plates without yellowing on the surface.

[0022] (1) During the normal production process of the tension leveling machine, it is changed to the full tension leveling mode to avoid yellowing and blackening of the board surface caused by unstretched head and tail.

[0023] When the strip weld is set to pass through the tension leveler in the secondary system, the tensi...

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Abstract

The invention discloses a production method for a hot rolled acid-pickling plate without a yellowing surface and relates to the technical field of strip steel acid-pickling. The production method forthe hot rolled acid-pickling plate without the yellowing surface comprises an acid-pickling process and withdrawal and straightening treatment, wherein a withdrawal and straightening machine in the withdrawal and straightening treatment is in a whole-course withdrawal and straightening mode, and an inhibitor and a passivator are added in the acid-pickling process. According to the production method for the hot rolled acid-pickling plate without the yellowing surface, the normal production process of the withdrawal and straightening machine is changed into the whole-course withdrawal and straightening mode, and yellowing and blackening of the plate surface caused by non-withdrawal and straightening of the head and the tail are avoided; the acid-pickling speed is stabilized, and yellowing caused by over-acid-pickling or under-acid-pickling is prevented; the inhibitor is added to improve the strip steel surface whiteness, and the yellowing is reduced; and a new nozzle model is adopted tokeep stable cleaning.

Description

technical field [0001] The invention relates to the technical field of steel strip pickling, in particular to a production method of a hot-rolled pickling plate without yellowing on the surface. Background technique [0002] With the increase in output of pickling units and the adjustment of product structure, the market's requirements for the surface quality of pickled boards are gradually increasing, and customers have higher and higher requirements for the surface quality of pickled boards. The sealing rate of the pickling unit due to the yellowing of the board surface reached an average of 10.4%, which seriously affected the product realization of the unit. [0003] At present, there is no patent declared about the hot-rolled pickling plate without surface yellowing and the production method. The invention produces the hot-rolled pickling plate with good surface quality and no yellowing defect through the type selection of the nozzle of the rinsing tank and the optimiza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02B08B3/02C23G1/08C23G3/02
CPCB21B45/0275B08B3/02C23G1/08C23G3/02C23G3/024C23G3/025C23G3/028
Inventor 杨德伦赵云龙贾幼庆李有河彭正波李从增
Owner MAANSHAN IRON & STEEL CO LTD
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