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Crystallizer on-line width modulation system and its method

A crystallizer and width adjustment technology, applied in the direction of using feedback control, etc., can solve problems such as loss of raw materials and time, reduce production efficiency, increase production cost, etc., to reduce slab defects, prevent steel breakout accidents, and eliminate gas. gap effect

Active Publication Date: 2008-12-31
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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  • Crystallizer on-line width modulation system and its method
  • Crystallizer on-line width modulation system and its method
  • Crystallizer on-line width modulation system and its method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, a crystallizer online width adjustment system, including,

[0047] Two opposite crystallizers,

[0048] A driving device arranged outside the two crystallizers and receiving control signals to adjust the width between the two crystallizers;

[0049] Absolute encoder circuit, used to collect and output the actual value of the crystallizer position;

[0050] Programmable logic controller (PLC), 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;

[0051] 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 number HS-G01-AR-D2B-1...

Embodiment 2

[0058] A crystallizer online width adjustment method is characterized in that comprising the following steps:

[0059] 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);

[0060] 2) Translation, that is, horizontal translation of the crystallizer;

[0061] 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;

[0062] 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;

[0063] 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 ...

Embodiment 3

[0067] A crystallizer online width adjustment method, comprising the following steps:

[0068] A Judgment step

[0069] 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.

[0070] 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;

[0071] B Width ...

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Abstract

The invention provides a crystallizer online width-adjusting system which is characterized in that the crystallizer online width-adjusting system comprises two crystallizers which are arranged facing to each other, a plurality of sets of driving devices which are arranged at the external sides of the two crystallizers and receive control signals so as to adjust the width between the two crystallizers, an absolute value encoder circuit, and a PLC which receives the actual value and the externally input object value and outputs the control signals to the driving device according to the object value and the actual value. The crystallizer online width-adjusting method comprises the steps of: 1) comparing the current actual value and the final object value of the two crystallizers, and judging whether the width-adjusting or narrowness-adjusting is required; if the width-adjusting is required, step 2) is carried out; if the narrowness-adjusting is required, step 3) is carried out; 2) translation; 3) cone adjusting; 4) amplitude adjusting; 5) cone adjusting; and 6) ending the adjusting when the actual value is equal to the final object value, otherwise, the step 1) is carried out. The crystallizer online width-adjusting system can carry out the resetting of the crystallizer and can quickly adjust the crystallizer to the pouring width; furthermore, the crystallizer online width-adjusting system leads the online width-adjusting to be safer and more reliable and have quick and exact response.

Description

technical field [0001] The invention relates to a crystallizer on-line width adjustment system and a method thereof. Background technique [0002] 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 the mold and interrupting the casting of slabs with different widths in casting in the past, iron and steel manufacturers have developed the technology of changing the width of the slab by moving the short side of the mold during the casting process,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/20B22D11/18
Inventor 阳玉平林富贵
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
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