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Acid pickling method

A treatment method and pickling technology, applied in the field of pickling treatment, can solve the problems of general pickling effect and large waste, achieve good pickling effect, improve pickling quality, and save costs

Inactive Publication Date: 2013-10-02
山东全通精密薄板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing pickling machines are generally equipped with feeding devices, spraying devices, pickling tanks, neutralization tanks and drying devices. The disadvantages are that the pickling effect is general and the waste is relatively large.

Method used

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  • Acid pickling method

Examples

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Embodiment 1

[0020] Such as figure 1 As shown, the pickling treatment method includes uncoiling the steel plate; (1) breaking the scale; (2) one-time pickling; (3) spray pickling; (4) neutralization; (5) drying.

[0021] When in use, the metal sheet enters the pickling machine through the feeding device, and on the basis of the original pickling, the spray pickling of the pickling nozzle is added to improve the pickling effect. The acid spray nozzle is connected to the pickling tank, uses the acid liquid in the pickling tank and can flow back to the pickling tank, which can improve utilization efficiency, save pickling costs, and improve pickling quality.

[0022] Perform a secondary pickling between step (3) spray pickling and step (4) neutralization.

[0023] Step (3) Spray pickling is to set a support roller on the body between the pickling tank and the neutralization tank, the support surface is inclined to the pickling tank, the support surface is provided with an acid spray nozzle, and the...

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PUM

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Abstract

The invention relates to an acid pickling method belonging to the field of steel plate acid pickling methods. The acid pickling method comprises the step of uncoiling a steel plate and is characterized by also comprising the following steps of: (1) scale breading; (2) primary acid pickling; (3) spray acid pickling; (4) neutralizing; and (5) drying. When the method is used, a metal sheet enters an acid pickling machine through a feeding device, and the spray acid pickling of an acid spray nozzle is additionally provided on the basis of the original acid pickling, so that the acid pickling effect is improved. The acid spray nozzle is communicated with an acid pickling tank, an acid liquid in the acid pickling tank can be returned to the acid pickling tank, so that the utilization efficiency can be increased, the acid pickling cost can be reduced, and the acid pickling quality can be improved. Through optimized design, the acid pickling method is good in acid pickling effect, capable of reducing acid pickling cost and increasing the production efficiency of the acid pickling machine.

Description

Technical field [0001] The invention provides a pickling treatment method, which belongs to the field of steel pickling methods. Background technique [0002] In the manufacturing process of the thin metal plate, it is necessary to process the pickled plate, that is, to clean the surface of the steel plate. For example, cleaning of the steel sheet before plating or painting, pickling for removing the scale (scaling) of the hot-rolled steel sheet, and the like can be given. Generally, in the process of heat-treating the steel sheet and rolling it, scale is formed on the surface of the steel sheet, and this scale is often entangled in the rolls during the cold rolling of the subsequent process and becomes a cause of damage to the surface of the steel sheet. Therefore, scale removal becomes an indispensable process. [0003] In conventional scale removal, the steel sheet is immersed in various acid solutions, continuously passed through the sheet, and removed by pickling. For examp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/02C23G3/02
Inventor 田立新
Owner 山东全通精密薄板有限公司
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