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Method for restraining self-drifting of double-roller casting and rolling Kiss point

A casting-rolling, unit time technology, applied in the field of twin-roller casting-rolling, can solve the problems of complicated cost and control scheme implementation, and achieve the effects of enhancing the quality of casting strips, improving the robustness of the process, and simplifying the casting-rolling control system

Inactive Publication Date: 2022-01-21
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All these schemes are optimized for the movement strategy of the crystallization roller, and the implementation of the control scheme is relatively complicated
[0004] Current process stabilization strategies are complex and costly to implement

Method used

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  • Method for restraining self-drifting of double-roller casting and rolling Kiss point
  • Method for restraining self-drifting of double-roller casting and rolling Kiss point

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for suppressing the self-drift of twin-roll cast-rolling Kiss points disclosed in Embodiment 1 of the present invention, such as figure 1 shown.

[0018] In Example 1 of the present invention, the quality of the molten metal entering the molten pool between the two crystallization rollers is controlled by adjusting and controlling the flow distribution system m .

[0019] In Example 1 of the present invention, m It refers to the mass of molten metal entering the molten pool through the distribution system per unit time.

[0020] In Example 1 of the present invention, figure 1 In , the mass of molten metal entering the molten pool through the distribution system is represented by the ordinate m , with the horizontal axis representing the casting and rolling time t , with period T, consists of a horizontal segment and a partial sine wave.

[0021] In Example 1 of the present invention, the time t 0 The first is the pouring stage, and the setting of the qu...

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PUM

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Abstract

The invention belongs to the technical field of double-roller casting and rolling, and particularly relates to a method for restraining self-drifting of a double-roller casting and rolling Kiss point. The applicant finds that the Kiss point has the self-drifting behavior through a double-roller casting and rolling molten pool tracing technology. The self-drifting behavior of the Kiss point has adverse effects on the technology stability and the casting strip quality. The method can be used for regulating and controlling the compensation amount of a boundary layer in a backflow area, and the negative effects of drifting of the Kiss point on the technology stability and the casting strip quality is restrained through change of the compensation amount of the boundary layer in the backflow area. Compared with an existing technology stability control scheme, the method has the advantages that the implementation process is more effective, simpler and more reliable.

Description

technical field [0001] The invention belongs to the technical field of twin-roll casting, and in particular relates to a method for suppressing self-drifting of Kiss points in twin-roll casting. Background technique [0002] During the twin-roll casting and rolling process, the Kiss point is not fixed, and there is a self-drifting behavior. The self-drift behavior of the Kiss point is due to the continuous decrease in the temperature of the Kiss point during the casting and rolling process, and the continuous decrease in temperature causes the position of the Kiss point to move in the direction opposite to the direction in which the cast strip moves out of the molten pool. The self-drift of the Kiss point is the fundamental reason why the twin-roll casting-rolling technology is so difficult to be commercialized in the field of steel materials, and it is also an inherent defect of the twin-roll casting-rolling technology. The so-called "self-drift", in short, is that the ten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/18B22D11/06
CPCB22D11/18B22D11/0622
Inventor 徐绵广
Owner SHANDONG UNIV OF TECH