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Method for continuously and rapidly adjusting width decrease of mold in online manner

A rapid adjustment and crystallizer technology, which is applied in the field of online width adjustment of continuous casting molds, can solve the problems of affecting the production rhythm of steel mills, increasing production costs, and reducing slab output, so as to improve production quality, increase work efficiency, Effect of Reducing Wedge Blank Waste

Active Publication Date: 2014-01-01
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the continuous casting machine is shut down and started pouring for the second time, the above operations on the one hand affect the production rhythm of the steel plant and reduce the output of slabs;

Method used

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  • Method for continuously and rapidly adjusting width decrease of mold in online manner
  • Method for continuously and rapidly adjusting width decrease of mold in online manner
  • Method for continuously and rapidly adjusting width decrease of mold in online manner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The taper on one side of the crystallizer is 9mm, the taper reduction during the width adjustment process is 30mm, and the width adjustment acceleration is set to 20mm / min 2 , the casting speed is 1.0m / min, the height of the mold is 900mm, the height of the meniscus is 800mm, the time for molten steel to go from the meniscus to the outlet of the mold is 0.8min, the width of both sides is adjusted, and the width is reduced by 400mm, and the corresponding The relationship between speed, time and length of wedge segment during widening process.

[0050] From the above analysis, it can be seen that if the width is adjusted on both sides of the crystallizer, the width of the single side adjustment is 200mm, that is, L=200mm. Correspondingly, ΔT=30mm, a=20mm / min 2 , t 0 =0.8min, V c =1.0m / min=1000mm / min. Therefore, the control parameters are:

[0051] 1. Cone adjustment time t 1 :

[0052] t 1 = ΔT ...

Embodiment 2

[0063] The taper on one side of the crystallizer is 6mm, the taper reduction during the width adjustment process is 15mm, and the width adjustment acceleration is set to 15mm / min 2 , the casting speed is 1.0m / min, the height of the mold is 900mm, the height of the meniscus is 800mm, the time for molten steel to go from the meniscus to the outlet of the mold is 0.8min, the width of both sides is adjusted, and the width is reduced by 200mm, and the corresponding The relationship between speed, time and length of wedge segment during widening process.

[0064] From the above analysis, it can be seen that if the width is adjusted on both sides of the crystallizer, the width of the single side adjustment is 100mm, that is, L=100mm. Correspondingly, ΔT=15mm, a=15mm / min 2 , t 0 =0.8min, V c =1.0m / min=1000mm / min. Therefore, the control parameters are:

[0065] 1. Cone adjustment time t 1 :

[0066] t 1 = ΔT ...

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Abstract

A method for continuously and rapidly adjusting width decrease of a mold in an online manner relates to online width adjustment for the continuous casting mold. Based on the solidification process of high-temperature molten steel, from solidification contraction of a billet shell, the width decrease process of the mold is led into an online width adjustment process, and control parameters of the width adjustment process are rapidly determined and include taper adjusting time, width adjusting speed and overall time of the width adjustment process, so that online continuous width adjustment for the continuous casting mold is instructed, and the online rapid width adjustment process of the mold is realized. The method is simple and practical and provides a convenient way for the online rapid hot width adjustment (width decrease) process in continuous casting production, thereby meeting the requirement of continuous casting on online change of the size of a production casting billet.

Description

technical field [0001] The invention relates to on-line width adjustment of a continuous casting crystallizer, in particular to a method for online continuous and fast adjustment of the width reduction of the crystallizer. Background technique [0002] As the core component of the continuous casting machine, the structure and performance of the mold directly affect the quality of the cast slab and the adaptability of the steel type. In order to adapt to the frequently changing requirements of continuous casting and rolling production, the width of the crystallizer often needs to be adjusted to obtain slabs of different sizes. When the traditional continuous casting machine changes the size of the slab, the method used is to stop casting, manually adjust the width of the mold or change the width by replacing the mold. When the continuous casting machine is shut down and started pouring for the second time, the above operations on the one hand affect the production rhythm of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/18
Inventor 徐永斌马春武幸伟徐海伦孙铁汉李智杜斌叶理德邵远敬
Owner WISDRI ENG & RES INC LTD
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