Continuous casting crystallizer for plate billet

A slab continuous casting and crystallizer technology, which is applied in the field of metal continuous casting auxiliary devices and continuous casting slab surface quality control, can solve the problems of difficult elimination of slab corner cracks, insufficient cooling uniformity, and casting slab corner cracks, etc. problems, to achieve the effect of eliminating longitudinal cracks and surface transverse cracks on the surface of the slab, reducing cleaning losses, and eliminating the defects of the slab

Inactive Publication Date: 2008-03-26
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0009] In order to overcome the disadvantages of the existing continuous casting crystallizers that either the cooling uniformity is not enough and it is difficult to eliminate the cracks at the corners of the slab, or the copper plate processing is complicated and the cost is increased, the technical p

Method used

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  • Continuous casting crystallizer for plate billet
  • Continuous casting crystallizer for plate billet
  • Continuous casting crystallizer for plate billet

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Embodiment

[0033] A converter steelmaking plant adopts the technology of the invention to control the longitudinal crack defect at the corner of the continuous casting billet surface. In continuous casting production, the crystallizer copper plate water tank structure shown in Figure 1, Figure 2, Figure 3, Figure 4, and Figure 5 is used, and the width of the billet is set to 1050mm before casting, and the thickness of the billet is set to 200mm , the crystallizer taper is set to 1.10% / m, and according to the different steel types, select the corresponding billet width, cooling water volume of wide copper plate, cooling water volume of narrow copper plate and casting speed listed in Table 1 below:

[0034] Table 1 Steel type and process parameter table of corresponding billet method

[0035] steel type

Slab width

Wide surface cooling water

Narrow surface cooling water

Throwing speed

IF steel

1050mm

3360l / min

400l / min

1.4m / min

Stb32 lo...

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Abstract

The present invention belongs to the field of metal continuous casting auxiliary equipment and continuous casting slab surface quality control technology. In the concrete, it discloses a slab continuous casting crystallizer so as to solve the problem of that the non-uniform cooling of width direction of traditional crystallizer can produce longitudinal corner crack. Said crystallizer includes wide-face copper plate, narrow-face copper plate and connecting screw hole row which is arranged along the slab-drawing direction, on the wide-face copper plate and narrow-face copper plate several rectangular cooling water tanks which are reasonably designed according to the cooling uniformity requirement are respectively and symmetrically distributed.

Description

technical field [0001] The invention relates to the field of metal continuous casting auxiliary device and continuous casting slab surface quality control, in particular to a continuous casting crystallizer capable of eliminating cracks at the corners of the slab. Background technique [0002] The structure of the copper plate water seam or the cooling water tank of the continuous casting mold has a very important influence on the cooling of the corner area of ​​the slab. The originally designed narrow-faced copper plate has a Φ10mm cooling water tank near the corner area, resulting in excessive cooling of the corner area of ​​the slab, and the corner of the billet shell is preferentially solidified and detached from the copper plate of the mold, which results in a gap between the corner area and the copper plate. Uniform air gap, the increase of thermal resistance caused by the air gap weakens the heat transfer in the corner area of ​​the crystallizer, the growth rate of th...

Claims

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Application Information

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IPC IPC(8): B22D11/112B22D11/055
Inventor 陈永曾建华杨素波唐生斌赵代琼吴国荣张均祥
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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