Method for controlling head and tail temperature difference of semi-endless rolled overlong casting blank

A control method and semi-headless technology, applied in the field of iron and steel metallurgy, can solve the problems of unresolved temperature uniformity of ultra-long slabs and industrial mass production, and achieve energy saving, convenient on-site operation, and simple process control Effect

Inactive Publication Date: 2010-12-08
UNIV OF SCI & TECH BEIJING +1
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Domestic Lianyuan Iron and Steel Co., Ltd., Tangshan Iron and Steel Co., Ltd. and Benxi The commissioning work of endless rolling has not carried out industrial mass production, and key tech

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
  • Method for controlling head and tail temperature difference of semi-endless rolled overlong casting blank
  • Method for controlling head and tail temperature difference of semi-endless rolled overlong casting blank
  • Method for controlling head and tail temperature difference of semi-endless rolled overlong casting blank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Using all two rolling, the length of the billet is about 70m, the length of the soaking furnace is 291m, and the length of the heating section is 159m. Among them, the acceleration point is set at a distance of 36m from the head of the soaking furnace, and the length of the swing section and the billet section is 96m. ; After the head of the slab leaves the continuous casting machine, it enters the soaking furnace directly at a casting speed of 4.0m / min, and continues to move forward at a speed of 25m / min after the tail of the slab passes the acceleration point until the head of the slab Reach the end of the heating section, then move quickly to the end of the billet exit section at a speed of 40m / min, and finally enter the F1 rolling mill at a speed of 30m / min until the tail of the slab leaves the soaking furnace.

[0048] The measurement results of the on-site infrared thermometer show that the temperature difference between the head and the tail of the slab is 20°C. ...

Embodiment 2

[0050] Using all three rolling, the length of the billet is about 100m, the length of the soaking furnace is 291m, and the length of the heating section is 159m. Among them, the acceleration point is set at a distance of 36m from the head of the soaking furnace, and the length of the swing section and billet discharge section is 96m. ; After the head of the slab leaves the continuous casting machine, it enters the soaking furnace directly at a casting speed of 4.2m / min, and continues to move forward at a speed of 25m / min after the tail of the slab passes the acceleration point until the head of the slab Reach the end of the heating section, then move quickly to the end of the billet exit section at a speed of 45m / min, and finally enter the F1 rolling mill at a speed of 30m / min until the tail of the slab leaves the soaking furnace.

[0051] The measurement results of the on-site infrared thermometer show that the temperature difference between the head and the tail of the slab i...

Embodiment 3

[0053] All four-rolling is adopted, the length of the billet is about 120m, the length of the soaking furnace is 291m, and the length of the heating section is 159m. Among them, the acceleration point is set at a distance of 36m from the head of the soaking furnace, and the length of the swing section and the billet section is 96m. ; After the head of the slab leaves the continuous casting machine, it enters the soaking furnace directly at a casting speed of 4.5m / min, and continues to move forward at a speed of 25m / min after the tail of the slab passes the acceleration point until the head of the slab Reach the end of the heating section, then move quickly to the end of the billet exit section at a speed of 45m / min, and finally enter the F1 rolling mill at a speed of 30m / min until the tail of the slab leaves the soaking furnace.

[0054] The measurement results of the on-site infrared thermometer show that the temperature difference between the head and the tail of the slab is ...

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

No PUM Login to view more

Abstract

The invention discloses a method for controlling the head and tail temperature difference of a semi-endless rolled overlong casting blank, which is used for solving the problem of poor longitudinal temperature uniformity of an overlong casting blank in a semi-endless rolling process. The invention has the technical scheme that the method comprises the following steps of: making the overlong casting blank enter a soaking pit at a fixed blank pulling speed V0 and making the overlong casting blank advance at a speed V1 not higher than V1max after the tail of the overlong casting blank passes through an accelerated point until the head of the casting blank arrives at the tail end of a heating section, wherein V1 is not less than V0 and not greater than V1max; then making the overlong casting blank advance to the tail end of a blank discharging section at a speed V2; and finally making the overlong casting blank enter a rolling mill at a speed V3 matched with a rolling mill F1 until that the tail of the casting blank leaves the soaking pit. The method has no influence to production rhythms, can also ensure the temperature uniformity of the semi-endless rolled overlong casting blank, greatly reduces the head and tail temperature difference of the overlong casting blank, has the advantages of simple process control and convenient field operation and can further save energy sources.

Description

technical field [0001] The invention relates to a method for producing ultra-thin strip steel by adopting a semi-endless rolling process, in particular to a method for controlling the temperature difference between the head and the tail of a semi-endless rolling ultra-long slab, and belongs to the technical field of iron and steel metallurgy. Background technique [0002] After years of production practice, the thin slab continuous casting and rolling process technology has been continuously developed and improved, and the steel types that can be rolled have been greatly expanded compared with the past, and ultra-thin products can already be produced. Such as figure 1 As shown, in the conventional short slab rolling process of the existing thin slab continuous casting and rolling process, the cast slab comes out of the continuous casting machine 20 and directly enters the soaking furnace 30 at a relatively high temperature. After the slab passes the acceleration point in th...

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): B21B37/74
Inventor 康永林焦国华成小军陈林恒刘旭辉周明伟赵显蒙吴浩鸿朱正谊郑亮凌华温良喜
Owner UNIV OF SCI & TECH BEIJING
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