Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Diversified cross-connection control method for plate shape of hot rolling band steel

A control method and technology of hot-rolled strip steel, applied in the direction of contour control, etc., can solve problems such as increasing production costs

Inactive Publication Date: 2009-02-25
SHANXI TAIGANG STAINLESS STEEL CO LTD
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it may change during subsequent cooling, coiling, etc.
Therefore, the only way is to perform uncoiling inspection at the inspection line to level or straighten the strip, however, this process greatly increases the production cost

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
  • Diversified cross-connection control method for plate shape of hot rolling band steel
  • Diversified cross-connection control method for plate shape of hot rolling band steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The invention is applied in the 2250mm wide-band hot continuous rolling production line of Taiyuan Iron and Steel Co., Ltd. The shape control equipment adopts CVC+. The maximum rolling pressure of F1--F2 is 50000KN, the maximum rolling pressure of F3--F4 is 45000KN, and the maximum rolling pressure of F5--F7 is 40000KN. The rolling mills are all equipped with cooling water devices, a total of 6 cooling water control equipment in the rolling mills, with a maximum control flow of 160m3 / h. The exit of the finishing mill is equipped with a multifunctional detector and a flatness detector to measure the crown and flatness of the strip respectively.

[0022] After the 2250mm hot rolling production line of Taiyuan Iron and Steel Co., Ltd. was put into production, the plate shape of the finished strip steel with a thickness of less than 4mm showed a double-sided wave with a wave height greater than 25mm / m, and the double-sided wave of the finished strip with a thickness of les...

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

A hot rolling bandprofil pluralism intersect control method is suitable for controlling the shape of strip in the hot rolling band steel production line. The purpose is to improve the potential shape of the hot rolling band steel and increase the product quality; the method aims at the hot rolling band steel production line of a fining mill set which is provided with seven rolling mills (F1-F7), firstly, the rolling loading and the bowed roll force dynamic control are adjusted; the thermal state target alignment controlling value is modified; micro-waves are used for rolling; the alignment target reference value is 0 I-unit; the target alignment -5 I-unit- -10 I-unit is taken; laminated cooling CTC adopts aftercooling mode; the heat stress of the band steel generated in a run out table ROT is reduced; the reeling target temperature CT is mended within 600 DEG C-650 DEG C; the working roll of the sixth rolling mill (F6) of the fining mill set shifts rolls for compensation; the use of cooling water among the rolling mills is optimized.

Description

technical field [0001] The invention relates to a method for improving the shape quality of hot-rolled steel strip products. Background technique [0002] With the gradual adoption of high-speed automatic production lines in the iron and steel industry, higher and higher requirements are put forward for the size and appearance of strips, which promotes the continuous development of flatness control technology. The cross-sectional profile (Profile) and flatness (Flatness) of the strip are two important aspects currently used to describe the shape of the strip. Strip rolling has a main requirement for the strip deformation process, that is, along the width direction of the strip, each point has a uniform longitudinal extension. If the transverse reduction is unevenly distributed, each point will have uneven extension correspondingly, and internal stress of interaction will be generated between each point. When the internal stress is large enough, it will cause the steel stri...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/28
Inventor 王津平马峰杨轶博侯安全
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products