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Method for controlling band steel sag for pickling bath

A kind of control method, technology of pickling tank

Inactive Publication Date: 2009-11-04
武钢集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the first method is that the output is reduced due to the prolongation of the pickling time; the disadvantage of the second method is that the consumption of hydrochloric acid is increased under the premise of constant output, thereby increasing the production cost

Method used

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  • Method for controlling band steel sag for pickling bath
  • Method for controlling band steel sag for pickling bath
  • Method for controlling band steel sag for pickling bath

Examples

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Embodiment Construction

[0011] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, and are only examples. At the same time, the advantages of the present invention will become clearer and easier to understand.

[0012] The basic idea of ​​the present invention is to explore a method for improving strip pickling efficiency under the premise of ensuring output and not increasing production cost.

[0013] The principle of the present invention is: according to the actual size of the acid tank, the calculation formula for the sag of the acid tank is obtained, the speed of the inlet roll of the acid tank is adjusted according to a certain rule, and the speed of the exit roll is maintained at the strip line speed, so that the sag is within a certain range The change is not to control the sag to be constant, but to control the sag to change up and down within the allowab...

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Abstract

The invention provides a method for controlling band steel sag for a pickling bath. The method is to calculate the formula of pickling bath sag according to the actual size of the pickling bath, regulate the speed of an inlet roller of the pickling bath and maintain velocity of an outlet roller as band steel linear velocity according to a certain regulation, so that the sag can change in a certain range, and the sag is controlled to change up and down in a permitted range, and pickling quality and pickling efficiency of the band steel can be improved through up and down oscillatory washing of the band steel. The method has the advantages of accurate control, easy realization, simple system and reliability, can wash the band steel up and down in a strong acid bath, improve the efficiency of washing on the premise that process requirement is completely met, and reduce production cost at the same time.

Description

technical field [0001] The invention relates to a strip steel sag control method suitable for pickling tanks, which is a control method for strip steel sag in pickling tanks suitable for cold-rolled strip steel pickling lines. Background technique [0002] The cold-rolled strip pickling tank consists of three parts, a strong acid tank, a weak acid tank (classified according to the strength of the acid in the acid tank), and a cleaning tank. Cold-rolled steel strip passes through strong acid tank, weak acid tank and cleaning tank, so that the iron oxide on the surface of the strip steel reacts with hydrochloric acid in the acid tank to achieve the purpose of removing the iron oxide scale on the surface of the strip steel. [0003] The main equipment for driving strip steel pickling in the acid tank includes the pinch leveler at the entrance of the acid tank, multiple squeezing sticks in the acid tank, and pinch rollers at the outlet of the acid tank. The uncoiled steel strip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G3/02G05B19/18
Inventor 黄波汤耀林
Owner 武钢集团有限公司
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