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

A technology for rapid adjustment and mold adjustment, applied in the field of online width adjustment of continuous casting molds, can solve problems such as affecting the production rhythm of steel mills, reducing the output of casting blanks, increasing production costs, etc., to improve production quality, reduce production costs, The effect of increasing the width adjustment time

Active Publication Date: 2014-03-12
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 increase of mold in online manner
  • Method for continuously and rapidly adjusting width increase of mold in online manner
  • Method for continuously and rapidly adjusting width increase of mold in online manner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The single-sided taper of the crystallizer is 4.5mm, the increase in taper during the width adjustment is 20mm, and the width adjustment acceleration is set to 20mm / min 2 , The drawing speed is 1.0m / min, the height of the mold is 900mm, the height of the meniscus is 800mm, the time for the molten steel from the meniscus to the mold outlet is 0.8min, both sides are widened, the width is increased by 200mm, and the corresponding The relationship between the speed and time of the width adjustment process and the length of the wedge section.

[0050] It can be seen from the above analysis that if the mold is widened on both sides, the one-side widening width is 100mm, that is, L=100mm. Correspondingly, ΔT=20mm, 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 at 0 + t 0 = 2.05 min - - - ( 1 )

[0053] 2. Width adjustment speed V m ...

Embodiment 2

[0063] The single-sided taper of the crystallizer is 6mm, the increase in taper during the width adjustment is 25mm, and the width adjustment acceleration is set to 15mm / min 2 , The drawing speed is 1.0m / min, the height of the mold is 900mm, the height of the meniscus is 800mm, the time for the molten steel from the meniscus to the mold outlet is 0.8min, the two sides are widened, and the width is increased by 300mm to obtain the corresponding The relationship between the speed and time of the width adjustment process and the length of the wedge section.

[0064] From the above analysis, it can be seen that if the mold is widened on both sides, the one-side widening width is 150mm, that is, L=150mm. Correspondingly, ΔT=25mm, 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 at 0 + t 0 = 2.883 min - - - ( 1 )

[0067] 2. Width adjustmen...

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Abstract

A method for continuously and rapidly adjusting width increase 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 increase 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 increase) 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 the online width adjustment of a continuous casting mold, in particular to a method for online continuous and rapid adjustment of the width increase of the mold. 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 meet the requirements of frequent changes in continuous casting and rolling production, the mold often needs to adjust the width to obtain cast slabs of different sizes. When the traditional continuous casting machine changes the size of the billet, the method adopted is to stop casting, manually adjust the width of the mold or change the width of the mold by replacing the mold. When the continuous casting machine stops and starts pouring for the second time, on the one hand, the above operations affect the production rhythm of the steel plant and red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/05B22D11/057
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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