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Method for pouring rectangular blank through clamping-free section of R10-meter-arc continuous casting machine

A technology of continuous casting machine and rectangular billet, which is applied in the field of casting rectangular billet without clamping section of R10 meter arc continuous casting machine, which can solve the problems of high cost and complicated installation of clamping section, so as to reduce operation and maintenance cost and promote stable production Sex and process productivity, and the effect of improving work efficiency

Active Publication Date: 2021-09-03
HANZHONG STEEL LTDRP OF SHAANXI STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for efficient casting of rectangular blanks without clamping section of R10-meter arc continuous casting machine, which solves the problem that the 10-meter-arc continuous casting machine must be installed with clamping section in the prior art, and the installation of the clamping section is complicated , the problem of high cost

Method used

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  • Method for pouring rectangular blank through clamping-free section of R10-meter-arc continuous casting machine
  • Method for pouring rectangular blank through clamping-free section of R10-meter-arc continuous casting machine
  • Method for pouring rectangular blank through clamping-free section of R10-meter-arc continuous casting machine

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Experimental program
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Effect test

Embodiment

[0041] Optimize the reverse taper curve of the arc surface and straight surface of the mold copper tube, control the gap between the shell of the primary continuous casting billet and the copper tube, and increase the safe thickness of the billet shell after the mold is raised. The casting speed of the continuous casting billet in step 2 is 1.6 -2.0m / min.

[0042] Use the R10 meter arc special calibration template to adjust the gap between the foot roller and the calibration template; the gap between the foot roller and the calibration template in step 3 is 0.0mm-0.5mm. Ensure that the continuous casting slab is supported by the foot roll when it enters the secondary cooling zero section during the pouring process to reduce the deformation of the wide surface of the continuous casting slab, such as figure 1 shown.

[0043] The melting temperature of the mold flux is 1170-1180°C, the viscosity of the mold flux is 0.70-0.73Pa.S, the alkalinity of the flux is 0.88-0.92 for perit...

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Abstract

The invention discloses a method for pouring a rectangular blank through a clamping-free section of an R10-meter-arc continuous casting machine. The method is specifically implemented according to the following steps that 1, according to a blank shell shrinkage curve in primary cooling of a produced steel type, the back taper of a crystallizer copper pipe is set, and the primary cooling strength is improved; 2, an arc correcting sample plate special for an R10-meter arc is used, and a gap between a foot roller and the arc correcting sample plate is adjusted; and 3, a secondary cooling mode is optimized, the cooling strength 700mm before secondary cooling is improved, the thickness of a blank shell is increased, and production of the rectangular blank is completed. The problems that in the prior art, a clamping section is complex in installation and high in cost are solved.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy technology, and relates to a method for casting a rectangular billet without a clamping section of an R10 meter-arc continuous caster. Background technique [0002] The 165mm×280mm rectangular slab has a large wide surface. After being cooled once in the copper tube of the crystallizer, it enters the secondary cooling zone after being drawn and cooled by spraying water. At this time, the outer layer of the high-temperature continuous casting slab is solidified and the shell thickness is very thin. (about 15-18mm), there is still high temperature molten steel inside the slab. Under the current level of continuous casting technology, due to the static pressure of molten steel, if there is no clamping device and no auxiliary clamping force for the formed continuous casting billet, the wide surface of the primary billet shell is prone to uneven expansion to the outer layer Deformati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/18B22D11/111B22D11/124B22D11/22B22D11/043
CPCB22D11/18B22D11/111B22D11/225B22D11/043B22D11/1246
Inventor 段少平周详杨魁高海旺邓锐焦涛吕磊
Owner HANZHONG STEEL LTDRP OF SHAANXI STEEL GRP
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