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A Control Method for Improving Roll Gap Precision of Continuous Caster

A control method, technology of continuous casting machine, applied in the field of metallurgy

Active Publication Date: 2019-03-26
CISDI ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the method of eliminating or improving the influence of this kind of congenital roll misalignment on the roll gap accuracy.

Method used

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  • A Control Method for Improving Roll Gap Precision of Continuous Caster
  • A Control Method for Improving Roll Gap Precision of Continuous Caster
  • A Control Method for Improving Roll Gap Precision of Continuous Caster

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Embodiment Construction

[0029] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0030] In the embodiment of the present invention, first calculate the roll gap compensation amount of the control reference position of each segment of the arc segment and the straightening segment (that is, the first and last rollers of the segment), and take the roll gap of the horizontal segment The compensation amount β=0; after calculating the roll gap compensation amount β of each segment, the existing roll gap setting value is compensated to obtain the final roll gap setting value.

[0031] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] This patent applies to all slab con...

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Abstract

The invention discloses a control method capable of improving the continuous casting machine roller gap precision. The control method is suitable for a slab continuous casting machine. The slab continuous casting machine comprises an arc-shaped section, a straightening section and a horizontal section. The arc-shaped section, the straightening section and the horizontal section are each composed of a plurality of sector sections. The control method is characterized by comprising the specific steps that roller gap compensation amount beta of a control reference position of each sector section is computed, and an original sector section roller gap set value is corrected through the compensation amount; and the roller gap set value of each sector section Gset is equal to the sum of Gint and beta, the Gset is the sector section roller gap set value, and the Gint is the original sector section roller gap set value. An existing roller gap set value is compensated to a certain degree so that the roller misalignment can be reduced, thus, the deformation of casting slabs is reduced, and the purpose of casting slab segregation improvement and crack defects are achieved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and relates to a control method for improving the roll gap accuracy of a continuous casting machine. Background technique [0002] Continuous casting is a process in which molten steel cools and solidifies into a solid billet with a certain shape when it passes through the crystallizer and the guide section (including the foot roll, vertical section, bending section, arc section, straightening section and horizontal section), such as figure 1 shown. In the process of molten steel solidifying into slabs, defects such as segregation and cracks occur from time to time, and these defects will affect the pass rate of subsequent rolled steel products and the mechanical properties of rolled products. Therefore, it is of great significance to eliminate or improve slab segregation and crack defects. [0003] Among the factors that cause segregation and cracks, the roll gap accuracy of the continuous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/16
CPCB22D11/16
Inventor 刘强韩志伟孔意文邓比涛
Owner CISDI ENG CO LTD
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