Fan-shaped section secondary cooling system for solidification final stage heavy reduction

A solidification end and sector-shaped technology, applied in the field of metallurgy, can solve the problems of roller table transportation damage, affecting the casting billet, warping deformation, etc., and achieve the effect of prolonging the service life, saving equipment costs, and preventing warping and deformation.

Active Publication Date: 2018-09-18
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that it will cause uneven heating of the billet and rollers, resulting in cracks and warping deformation at the edge of the billet
In addition, since the nozzles arranged horizontally have no inclination angle, the nozzles arranged vertically cannot effectively remove the iron scale accumulated in the middle, resulting in the accumulation of iron scale on the surface of the slab, affecting the transportation of the slab on the roller table and damaging the roller table equipment

Method used

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  • Fan-shaped section secondary cooling system for solidification final stage heavy reduction
  • Fan-shaped section secondary cooling system for solidification final stage heavy reduction

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Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, in the present embodiment, the cooling nozzles (horizontal cooling nozzles 3, vertical cooling nozzles 2-1, vertical cooling nozzles 2-2 with an inclined angle) and strong scale-sweeping nozzles 1 of the inner arc roller section are horizontally and vertically Distributed in a straight and staggered manner, horizontally arranged transverse cooling nozzles 3 are formed between the first roller 4 and the second roller 5, and the two ends of the lower V-shaped groove are arranged opposite to each other along the axial direction of the roller section, and the transverse cooling nozzles 3 and the horizontal plane form a certain angle α (2°≤α≤5°), and the outlet of the transverse cooling nozzle 3 is directed upwards and directed to the lower surface of the inner arc roll section. The effect of adopting the angle is: it can effectively Sweep the iron scale to both sides to prevent the accumulation of iron scale to the center and assist the uniform co...

Embodiment 2

[0031] like figure 2 As shown, the arrangement of the cooling and strong sweeping nozzles of the outer arc roll section is basically the same as that of the inner arc roll section. In this embodiment, the cooling nozzles (horizontal cooling nozzles 3, vertical cooling nozzles 2-1, vertical cooling nozzles 2-2 with an inclined angle) of the outer arc roller section and the strong scale-sweeping nozzles 1 are staggered horizontally and vertically. The horizontally arranged transverse cooling nozzles 3 are formed between the first roller 4 and the second roller 5, and the two ends of the upper V-shaped groove are arranged opposite to each other along the axial direction of the roller section, and the transverse cooling nozzles 3 and the horizontal plane There is a certain included angle α (2°≤α≤5°), and the outlet of the transverse cooling nozzle 3 is directed downwards, pointing to the upper surface of the outer arc roll section. The effect of adopting the included angle is: th...

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Abstract

The invention belongs to the technical field of metallurgy and particularly relates to a fan-shaped section secondary cooling system for solidification final stage heavy reduction in continuous casting cooling. The fan-shaped section secondary cooling system for solidification final stage heavy reduction comprises cooling nozzles and powerful descaling nozzles which are installed in a horizontal fan-shaped section of a continuous casting machine and correspond to an outer arc roller section and an inner arc roller section, the cooling nozzles and the powerful descaling nozzles which correspondto the inner arc roller section and the outer arc roller section are distributed in a horizontally and vertically staggered mode, the horizontally arranged nozzles are located at two ends between a first roller and a second roller and oppositely placed in the axial direction of the roller sections, and included angles are formed between the horizontally arranged nozzles and the horizontal plane.Included angles are formed between the vertically arranged cooling nozzles and powerful descaling nozzles which correspond to the first roller and the second roller and the vertical direction. The fan-shaped section secondary cooling system for solidification final stage heavy reduction not only can meet the cooling requirement of the rollers of the fan-shaped section, be beneficial for keeping agood state of the fan-shaped section, and prolong the service life of the fan-shaped section, but also can meet the requirements for cooling of cast blanks and cleaning of surface scale, be beneficialfor uniformly cooling inner and outer arcs of plate blanks, prevent buckling deformation of plate blanks, and guarantee the quality of continuously cast blooms.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a sector-shaped secondary cooling system for continuous casting and cooling at the end of solidification under heavy pressure. Background technique [0002] With the rapid development of manufacturing industry and science and technology, higher requirements are put forward for the internal quality of steel products. Central porosity and central shrinkage cavity are the main factors restricting the internal quality of continuous casting slabs. Therefore, the solidification end heavy reduction technology is proposed. The heavy reduction technology at the end of continuous casting solidification is to make full use of the characteristics of the large temperature difference between the surface and core of the slab at the end of the slab solidification, and carry out a large deformation reduction on the slab so that the reduction can fully penetrate into the core of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/124
CPCB22D11/1246
Inventor 祭程朱苗勇李应焕
Owner NORTHEASTERN UNIV LIAONING
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