Roll curve of continuous caster with continuous bending section and two continuous straightening sections

A technology of straightening section and bending section, which is applied in the field of straight-arc and arc-shaped continuous casting machine roll curves, and can solve the problem of bending and straightening sections that cannot be used for straight-arc continuous casting machines, and arc-shaped continuous casting machines that cannot be used Problems such as straightening section and slab internal cracking can be achieved to reduce construction investment, reduce height and prevent internal cracking

Inactive Publication Date: 2004-09-15
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some deficiencies in the above-mentioned bending and straightening sections: multi-point bending and straightening make the billet produce a large mutation of strain ε and a large strain rate in the process of bending and straightening Peak value; progressive bending and straightening make the slab produce non-linear strain ε and the corresponding strain rate The larger the peak value, the larger the strain rate It is easy to cause internal cracking of the slab
The main disadvantage of this curve is that when it is connected with a straight line segment in th

Method used

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  • Roll curve of continuous caster with continuous bending section and two continuous straightening sections
  • Roll curve of continuous caster with continuous bending section and two continuous straightening sections
  • Roll curve of continuous caster with continuous bending section and two continuous straightening sections

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Experimental program
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Effect test

Embodiment 1

[0053] Continuous caster roll row curve with a continuous bending section and two continuous straightening sections, the curve consists of a vertical section H FE , continuous bending section S ED , basic arc segment S DC , the first continuous straightening section S CB , transition arc segment S BA , the second continuous straightening section S AO and horizontal section L OH composition (see figure 2 ).

[0054] The maximum thickness of the slab D = 250mm, the maximum working speed V C = 1.7 m / min , Metallurgical length L of the slab e =37825mm, arc length S of the second continuous straightening zone OA =2170mm, the arc length S of the transition arc segment AB =5160mm, transition arc radius R 2 =10300mm, arc length S of the first continuous straightening zone BC =1000mm, arc length S of basic arc segment CD =5875mm, basic arc radius R 1 =7500mm, arc le...

Embodiment 2

[0059] The roll row curve of a straight-arc continuous caster with a continuous straightening section, the curve consists of a vertical section H FE , continuous bending section S EB , basic arc segment S BA , continuous straightening section S AO and horizontal section L OH composition.

[0060] The maximum thickness of the slab D = 250mm, the maximum working speed V C = 1.7 m / min , Metallurgical length L of the slab e =37825mm, continuous straightening section curve arc length S OA =2170mm, arc length S of basic arc segment AB =14500mm, basic arc radius R 2 =10300mm, arc length S of continuous bending section curve BE To be requested, the vertical segment length H FE =2000mm, horizontal section length L OH to be requested.

[0061] The coordinate values ​​of the design and calculation results of the roll row curve of the continuous casting machine in the Car...

Embodiment 3

[0065] Roller row curve of an arc-shaped continuous casting machine with two continuous straightening sections, the curve is composed of a basic arc segment S FC , the first continuous straightening section S CB , crossing arc segment S BA , the second continuous straightening section S AO and horizontal section L OH composition (see Figure 5 ).

[0066] The maximum thickness of the slab D = 250mm, the maximum working speed V C = 1.7 m / min , Metallurgical length L of the slab e =37825mm, arc length S of the second continuous straightening zone OA =2170mm, the arc length S of the transition arc segment AB =4500mm, transition arc radius R 2 =10300mm, arc length S of the first continuous straightening zone BC =1500mm, arc length S of basic arc segment CF To be sought, basic arc radius R 1 =5150mm, horizontal section length L OH To be required, the crystallizer ...

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PUM

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Abstract

The invention relates to a conticaster roller row curve with continuous bending segment and two continuous straightening segments, its character: it is a smoothly linked curve by vertical segment, continuous bending segment, basic arc segment, first continuous straightening segment, transition arc segment, second continuous straightening segment and horizontal segment. The whole roller row is composed of fixed rollers, and its curvature varies continuously. It can effectively avoid or reduce the inner crack of cast ingot and incidental partial separation, and simplifies the devices in continuous bending and straightening segments, and reduces the height of the conticaster.

Description

technical field [0001] The invention belongs to the field of continuous steel casting, and relates to a straight-arc type (or called vertical bending type) continuous casting machine roll curve (roller line of continuous casting machine) which is entirely composed of fixed roll lines and has continuous bending and straightening sections. The curve refers to the movement track of the outer arc side of the billet moving in the continuous casting machine) and the arc-shaped continuous casting machine roll curve with only continuous straightening sections, especially a low-height one with two continuous straightening sections. Roll curves of straight arc and arc continuous casting machines. Background technique [0002] At present, all known straight arcs with bending and straightening sections and only arc-shaped continuous casting machine rolls with straightening sections (see Figure 7 , Figure 8 ), the slabs are all bent and straightened under the condition of having a liq...

Claims

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Application Information

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IPC IPC(8): B22D11/043B22D11/12
Inventor 李宪奎
Owner YANSHAN UNIV
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