Device and method for improving casting blank quality of continuous casting production

A billet and quality technology, applied in the field of metallurgical process control, to achieve uniform temperature distribution, avoid surface cracks and center cracks, and small belly volume

Active Publication Date: 2017-03-22
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, quality defects such as surface transverse cracks, surface longitudinal cracks, center crac

Method used

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  • Device and method for improving casting blank quality of continuous casting production
  • Device and method for improving casting blank quality of continuous casting production
  • Device and method for improving casting blank quality of continuous casting production

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[0049] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0050] The device for improving the quality of slabs produced by continuous casting provided by the present invention improves the quality of slabs in continuous casting production through a number of measures, including arranging a plurality of liquid cores artificially forced to form solidification ends along the casting flow direction and large-reduction casting Rolling stand, electromagnetic linear periodic symmetric agitation device, active adjustment secondary cooling water control device based on real-time measurement of slab surface temperature and nozzle upgrade stepless water spray width adjustment.

[0051] see Figure 1 to Figure 12 , a device for improving the quality of slabs produced by continuous casting, comprising a plurality of casting and rolling racks 18 arranged along th...

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Abstract

The invention discloses a device and method for improving casting blank quality of continuous casting production. The device comprises a plurality of casting-rolling mill racks arranged in the casting strand direction, an electromagnetic linear period symmetric stirring unit and a drive adjustment type secondary cooling water control unit. The casting-rolling mill racks are used for artificially and forcibly forming solidification tail ends and arranged on a casting strand horizontal area. The electromagnetic linear period symmetric stirring unit is arranged on a casting strand arc area. The drive adjustment type secondary cooling water control unit is used for conducting stepless water spraying cooling on the surfaces of casting blanks based on real-time measuring. The liquid core large-rolling-reduction casting-rolling device and technology used for artificially and forcibly forming the solidification tail ends form the large rolling reduction in the thickness direction of the casting blanks, so that the solidification tail ends are artificially and forcibly formed inside the casting blanks, conditions for forming defects in the natural solidification process of the casting blanks are terminated, flowing of solute element molten steel enriched in the casting blanks is prevented, and the effects of homogenizing and density inside the casting blanks are improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgical process control, and relates to a device and a method for improving the quality of cast slabs produced by continuous casting. Background technique [0002] In the continuous casting production process, the high-temperature liquid steel is continuously cooled through the primary cooling zone, vertical zone, bending zone, arc zone, straightening zone, horizontal zone, etc. of the mold to form a billet with a liquid core of a certain thickness, and finally completely solidified . The solidification process conditions of the continuous casting slab are the main factors determining the quality of the slab. How to improve the quality of the slab has been an important subject of unremitting technical research in the metallurgical field for many years. In recent years, as offshore platforms, heavy machinery, nuclear power military and other engineering projects have higher and higher requirements o...

Claims

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Application Information

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IPC IPC(8): B22D11/22B22D11/124B22D11/12
CPCB22D11/1206B22D11/122B22D11/1246B22D11/225
Inventor 张奇杨拉道
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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