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Method for calculating solid fraction of continuous casting roller row position

A calculation method and technology of solid phase ratio, which is applied in the field of metal smelting, can solve problems such as expensive, temperature cannot be directly measured, and it takes months or even years

Pending Publication Date: 2021-05-07
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

The temperature cannot be directly measured, and is generally calculated by the mathematical model of continuous casting solidification
However, purchasing a commercial continuous casting solidification mathematical model usually requires a high price. With the model, it is necessary to debug and obtain the basic physical parameters suitable for the current casting machine. This process usually takes months or even years.

Method used

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  • Method for calculating solid fraction of continuous casting roller row position
  • Method for calculating solid fraction of continuous casting roller row position
  • Method for calculating solid fraction of continuous casting roller row position

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Example: For a 240 square slab, see the attached figure for the longitudinal low magnification, and calculate the solid phase ratio at each roll row.

[0020] The shell thickness of the 1#~4# rollers is 72, 84, 102, 119mm according to the measurement of the low-magnification point cracks in the slab, see the attached figure 1 ;

[0021] Among them, the ideal starting center solid phase ratio According to the formula of the change value of solid phase ratio corresponding to the unit change thickness of the billet shell, the change value

[0022]

[0023] According to the above change value, the solid phase rate of the billet shell center corresponding to the 1#~4# rollers is obtained as follows:

[0024] Fs1=0.3+(C 1 -C 0.3 )×j=0.3+(72-66)×0.0128=0.38

[0025] Fs2=0.3+(C 2 -C 0.3 )×j=0.3+(84-66)×0.0128=0.53

[0026] Fs3=0.3+...

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Abstract

The invention relates to a continuous casting roller row position solid fraction calculation method, which does not need a continuous casting solidification mathematical model, constructs a parabolic equation of initial center solid fraction and blank shell thickness under soft reduction under the condition that the blank shell thickness of the roller row position is known, and calculates the solid fraction by utilizing the rule that the center solid fraction linearly increases along with the increase of the blank shell thickness. And the center solid fraction of each roller can be calculated in sequence. The method is a simplified calculation method obtained by fitting operation results of continuous casting solidification mathematical models based on mass production practice data and multiple scientific research institutions, and can be widely applied to square billet and rectangular billet continuous casting soft reduction process research.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a method for calculating the solid phase ratio at the position of a continuous casting roll row. Background technique [0002] In the process of continuous casting, the change of temperature and solid phase ratio in the process of steel solidifying from liquid to solid is the most important process parameter, and also the decisive factor that ultimately determines the quality of the slab. All operations of continuous casting are to obtain a reasonable overall casting flow. temperature and solid fraction distribution. [0003] The central solid phase ratio is an important parameter that must be based on the study of soft pressure and terminal electromagnetic stirring. In the actual production process, due to the complex and changeable steel composition, caster structure, process parameters and external conditions, it is very difficult to determine the temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/12G06F17/18B22D11/16
CPCG06F17/12G06F17/18B22D11/16
Inventor 任一峰饶立华许晓红葛洪硕白云马晓东杜建峰
Owner JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD