Convex foot roller for continuously casting plate blank and method for improving center segregation and porosity of continuously cast plate blank

A slab continuous casting and foot roll technology is applied in the field of slab production to achieve the effects of improving the reduction effect, reducing the center porosity and reducing the stress.

Active Publication Date: 2018-03-09
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a protruding foot roll for slab continuous casting, aiming to solve the pro

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Convex foot roller for continuously casting plate blank and method for improving center segregation and porosity of continuously cast plate blank
  • Convex foot roller for continuously casting plate blank and method for improving center segregation and porosity of continuously cast plate blank
  • Convex foot roller for continuously casting plate blank and method for improving center segregation and porosity of continuously cast plate blank

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] The above method for improving the center segregation and porosity of continuous casting slab is applied to a 230mm×1850mm slab continuous casting machine in a steel plant.

[0038] Such as figure 2 As shown, the continuous casting slab 200 entering the secondary cooling zone is reduced by a tension leveler; the tension leveler includes an upper foot roller and a lower foot roller, and the upper foot roller is any one of the above-mentioned slabs. Convex foot roller for continuous casting, the lower foot roller is a flat foot roller;

[0039] Among them, there are 5 tension straightening machines for pressing;

[0040] In the drawing direction, the length of the middle protrusion 110 of the upper foot roller and the length of the side protrusion 120 of the upper foot roller of each tension leveling machine are successively reduced. The length of the middle protrusion 110 of the first upper foot roller is 220 mm, and the adjacent The length of the middle pro...

Example Embodiment

[0043] Example 2

[0044] The above method for improving the center segregation and porosity of continuous casting slab is applied to a 230mm×1850mm slab continuous casting machine in a steel plant.

[0045] Such as image 3 As shown, the continuous casting slab 200 entering the secondary cooling zone is reduced by a tension leveler; the tension leveler includes an upper foot roller and a lower foot roller, and the upper foot roller and the lower foot roller are either one The above-mentioned protruding roller for continuous slab casting;

[0046] Among them, there are 5 tension-straightening machines for pressing, and the upper edge of the raised structure on the lower foot roller is kept level with the upper edge of the flat roller at the front end of the second cold zone;

[0047] In the drawing direction, the lengths of the middle protrusions 110 and the side protrusions 120 of the upper and lower foot rollers of each tension leveler are reduced in sequence; the length of the mid...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of the production of plate blanks, and particularly discloses a convex foot roller for continuously casting a plate blank and a method for improving the center segregation and porosity of the continuously cast plate blank. The method aims at solving the problems how to weaken the center segregation of the continuously cast plate blank and lighten the center porosity of the continuously cast plate blank. The convex foot roller for continuously casting the plate blank comprises a roller body and a bulge structure, wherein the bulge structure is arranged on the roller body; the bulge structure comprises an intermediate bulge arranged in the middle of the roller body and two lateral bulges symmetrically arranged on the roller body. The method for improving the center segregation and porosity of the continuously cast plate blank comprises the following steps of carrying out pressing-down treatment on the continuously cast plate blank entering a secondary cooling zone by adopting a pulling-straightening machine with the convex foot roller. The convex foot roller for continuously casting the plate blank can be used for pressing down the continuously cast plate blank in a targeted manner in the form of a solidification zone during a solidification last phase; molten steel containing an enriched segregation element in the continuously cast plate blank is effectively stopped from flowing to accordingly weaken the center segregation and meanwhile, the solidification contraction amount of the continuously cast plate blank is compensated to lighten the center porosity of the continuously cast plate blank.

Description

technical field [0001] The invention belongs to the technical field of slab production, and in particular relates to a protruding foot roll for slab continuous casting and a method for improving center segregation and loosening of continuous casting slab. Background technique [0002] Continuous casting slab reduction in the secondary cooling zone is an effective technology to improve continuous casting slab center segregation and porosity. The molten steel flow of the elements weakens the center segregation, and at the same time compensates the solidification shrinkage of the continuous casting slab to reduce the center porosity. The applied pressure is mainly mechanical stress, and the amount of reduction is an important parameter to determine how much reduction is performed. [0003] With the increase of the cross-sectional size of the billet, on the one hand, the volume compensating for the solidification shrinkage increases significantly, and the extrusion deformation ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B22D11/12
CPCB22D11/1206
Inventor 谢鑫吴国荣曾建华马晓涛
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap