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Control method for macular corrosion of cold rolling pickling machine set

A technology of pickling unit and control method, which is applied in the direction of drying solid materials, spraying devices, and drying solid materials without heating, can solve the problems of strip steel macular corrosion, loss, etc., and achieve the purpose of improving the yield rate, reducing the conversion rate, and reducing The effect of mass objection on macular rust

Active Publication Date: 2017-02-01
RIZHAO BAOHUA NEW MATERIAL CO LTD
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Problems solved by technology

[0004] In view of the above problems, the purpose of this invention is to provide a method for controlling the macular corrosion of cold-rolled pickling units, so as to solve the problems such as the large losses caused by the macular corrosion defects of strip steel

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  • Control method for macular corrosion of cold rolling pickling machine set

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Embodiment Construction

[0024] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details.

[0025] In order to illustrate the control method of the macular corrosion of the cold-rolled pickling unit provided by the invention, figure 1 The flow chart of the method for controlling macular corrosion of a cold rolling pickling line according to an embodiment of the present invention is shown.

[0026] like figure 1 As shown, the control method of the macular corrosion of the cold-rolled pickling unit provided by the invention comprises:

[0027] S110: Determine possible causes of macular erosion; S120: Control the formation of macular erosion according to the determined possible cause of macular erosion.

[0028] In step S110, the reasons that may form macular corrosion include the following ...

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Abstract

The invention provides a control method for macular corrosion of a cold rolling pickling machine set. The control method comprises the following steps: first, determining possible reasons for formation of the macular corrosion, and then controlling the formation of the macular corrosion according to the possible reasons for the formation of the macular corrosion, wherein the possible reasons for the formation of the macular corrosion comprises the following seven types: the macular corrosion formed in a low-speed process of a process stage, the macular corrosion formed by over-high concentration of residual C1 on the surface of band steel, the macular corrosion formed by excessive temperature difference between a water temperature and an acid temperature in a bleaching stage, the macular corrosion formed by accidental shutdown or slow speed, the macular corrosion formed by low pressure of a squeezing roller and low temperature of a drying machine in the process stage, the macular corrosion formed by instability of voltage of an electrostatic oiler, and the macular corrosion formed by high humidity in a working field. By utilizing the control method for the macular corrosion of the cold rolling pickling machine set, the problems of great loss and the like caused by the defect of the macular corrosion of the band steel can be solved.

Description

technical field [0001] The invention relates to the technical field of cold-rolled pickling, and more specifically, to a method for controlling macular corrosion of a cold-rolled pickling unit. Background technique [0002] For pickling units producing finished products, macular corrosion defects have always been a defect that is difficult to control in major steel mills. The occurrence of this defect is affected by many factors in various links such as process, equipment, and management. Hiddenness, sometimes it takes several months to store the surface of the steel plate to appear, and the cause analysis is also difficult. A large number of macular rust defects make users unable to use it, resulting in product scrapping and economic losses. [0003] Therefore, in order to solve the above problems, the present invention provides a method for controlling macular corrosion of a cold-rolled pickling unit. Contents of the invention [0004] In view of the above problems, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G3/02F26B5/14B05B15/00
CPCC23G3/027F26B5/14
Inventor 王野杜希恩王学伦于长江王文超鲍生科吴盛平周洪宝李远旭包红军高仁辉张波刘东辉石进李海涛刘训民张丽晶王庆王胜利陈传敬
Owner RIZHAO BAOHUA NEW MATERIAL CO LTD
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