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On-line width adjusting method of cystallizer

A technology of crystallizer and width adjustment, applied in the direction of using feedback control, etc., can solve the problems of increasing production cost, reducing production efficiency, loss of raw materials and time, eliminating air gaps, reducing the probability of occurrence, and reducing slabs The effect of defects

Active Publication Date: 2010-04-14
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional adjustment method is to stop the continuous casting machine and carry out the second pouring, which causes the loss of raw materials and time
Greatly reduced production efficiency and increased production costs

Method used

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  • On-line width adjusting method of cystallizer
  • On-line width adjusting method of cystallizer
  • On-line width adjusting method of cystallizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, a crystallizer online width adjustment system, including,

[0022] Two crystallizers arranged opposite to each other, a driving device arranged outside the two crystallizers and receiving control signals to adjust the width between the two crystallizers;

[0023] Absolute encoder circuit, used to collect and output the actual value of the crystallizer position;

[0024] A programmable logic controller (PLC) is connected to the absolute encoder circuit, accepts the actual value and the target value input from the outside, and outputs a control signal to the drive device according to the target value and the actual value;

[0025] Wherein, the driving device includes a quick-response valve and a stepping electro-hydraulic cylinder (referred to as a stepping cylinder) pneumatically connected to the quick-response valve, and the stepping cylinder is connected to the crystallizer. The quick-response valve QSV can be a product with the model numbe...

Embodiment 2

[0032] A crystallizer online width adjustment method is characterized in that comprising the following steps:

[0033] 1) Compare the current actual value and the final target value of the two crystallizers to determine whether it is widening or narrowing, if it is widening, then enter step 2), if it is narrowing, then go to step 3);

[0034] 2) Translate, that is, move the crystallizer horizontally;

[0035] 3) Taper adjustment, that is, maintain the width of the short side or long side between the two crystallizers, and adjust the taper between the two crystallizers towards the final target value;

[0036] 4) Amplitude modulation, that is, maintaining the taper between the two crystallizers, and adjusting the relative distance between the two crystallizers towards the final target value;

[0037] 5) Taper adjustment, that is, maintain the width of the long side or short side between the two crystallizers, and adjust the taper between the two crystallizers towards the final ...

Embodiment 3

[0041] A crystallizer online width adjustment method, comprising the following steps:

[0042] A Judgment step

[0043] A1. According to the current actual value and the final target value of the two crystallizers, and set one or more stage target values ​​according to the actual value and the final target value, the target value of the stage is between the actual value and the target value; by setting The target value of the stage is determined, so that the adjustment of the crystallizer can be divided into multiple steps. The target value of the stage can be set according to the mechanical parameters, the current actual value and the final target value.

[0044] A2. Set the next target value to the value closest to the current actual value in the direction of the final target value among the stage target value and the final target value, and determine whether it is widening or narrowing. If it is widening, go to step B , if it is narrowing, go to step C;

[0045] B Width ...

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PUM

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Abstract

An on-line width adjusting method of a cystallizer comprises the following steps: 1) comparing the current actual value and the final target value of two cystallizers, judging whether the width between the two cystallizers needs to be widened or narrowed, if the width needs to be widened, entering step 2), and if the width needs to be narrowed, turning to step 3); 2) translating; 3) adjusting cone; 4) adjusting amplitude; 5) adjusting cone; and 6) when the actual value is equal to the final target value, ending the adjustment, otherwise returning to the step 1). The on-line width adjusting method is capable of zeroing the crystallizer and rapidly adjusting the crystallizer to the width of start of casting; and the on-line width adjustment is led to be safer and more reliable, and the response is quick and accurate.

Description

[0001] This application is a divisional application of the invention patent application with the application number 200710042974.6, the invention title is "on-line crystallizer width adjustment system and its method", and the application date is June 28, 2007. technical field [0002] The invention relates to a method for on-line width adjustment of a crystallizer. Background technique [0003] In the production of continuous casting slabs, in order to meet the needs of products with different specifications, the tolerance of the crystallizer often needs to be adjusted. The traditional adjustment method is to stop casting, manually adjust the mold width or replace the mold. The traditional adjustment method is to stop the continuous casting machine and carry out the second pouring, which causes the loss of raw materials and time. The production efficiency is greatly reduced and the production cost is increased. In order to overcome the shortcomings of changing the width of...

Claims

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Application Information

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IPC IPC(8): B22D11/18G05D3/12
Inventor 阳玉平林富贵
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD