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Method for setting width of ferrite stainless steel slab during continuous casting production

A setting method, ferrite technology, applied in the field of metallurgy, can solve problems such as unstable slab width

Inactive Publication Date: 2011-11-09
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] It is based on this that the control of slab width is very unstable in the current production process of ferritic stainless steel plate

Method used

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  • Method for setting width of ferrite stainless steel slab during continuous casting production
  • Method for setting width of ferrite stainless steel slab during continuous casting production
  • Method for setting width of ferrite stainless steel slab during continuous casting production

Examples

Experimental program
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Effect test

Embodiment 1

[0053] In this embodiment, ferritic stainless steel SUS410S is selected, and the target width of the slab is W Cold is 1265mm, then to obtain a ferritic stainless steel slab that meets the requirements, proceed through the following steps:

[0054] (1) Calculate the shrinkage rate in the width direction of the ferritic stainless steel SUS410S slab from the temperature at the outlet of the continuous casting machine crystallizer to the temperature when it is cooled to room temperature

[0055] W T = W Mold ∫ T cold T M - ex α ( T ) dT - - - ( 1 . ...

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Abstract

The invention discloses a method for setting the width of a ferrite stainless steel slab during continuous casting production. The method comprises the following steps of: according to the steel grades of ferrite stainless steel, calculating the shrinking percentage of a slab in the steel grade in the width direction when the temperature is reduced from the temperature at an outlet of a continuous casting machine crystallizer to room temperature; calculating a swelling value of the slab in the steel grade from creepage starting to creepage termination in the width direction; and according to the target width of the slab in the steel grade, adjusting the positions of copper plates on the two sides of the continuous casting machine crystallizer so as to set the width of the outlet of the crystallizer. The method accords with the performance characteristics of the ferrite steel grades. According to a control result, slabs meeting the preset product requirements can be produced and the requirements of a small error and a stable control law are met.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a size control method in the steel plate casting process. Background technique [0002] Continuous casting technology is a process in which molten steel is poured, condensed, and cut to obtain a slab. Such as figure 1 As shown, the most important part of this process is to pour one or more furnaces of molten steel into the crystallizer 3 continuously through the ladle 1 and the tundish 2, and then water-cool in the crystallizer 3 composed of four copper plates to obtain a solid shell around , The middle part is still the slab of molten steel. Then the cast slab is gradually solidified through the secondary cooling 4, and is pulled out of the continuous casting machine body by the support and rotation of the rollers in the tension straightening device 5, and then cut into slabs of a certain length by the cutting device. [0003] In continuous casting production, the width of the produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/16
Inventor 苏锦盛建华陆力军刘文彬
Owner BAOSHAN IRON & STEEL CO LTD
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