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

A quarter corrugated shape control method for five-stand continuous cold rolling high-strength steel strip

A five-stand cold continuous rolling, high-strength steel plate technology, applied in the direction of profile control, can solve the problems of reducing the control ability of the middle stand, increasing the pressure of the last stand to eliminate the shape defect, so as to improve the shape quality and reduce the The effect of regulating pressure and improving control accuracy

Active Publication Date: 2020-03-31
NORTHEASTERN UNIV LIAONING
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the adjustment ability of the quarter-wave plate shape defect of the middle frame is reduced, and the pressure of the end frame to eliminate the plate shape defect is increased.

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
  • A quarter corrugated shape control method for five-stand continuous cold rolling high-strength steel strip
  • A quarter corrugated shape control method for five-stand continuous cold rolling high-strength steel strip
  • A quarter corrugated shape control method for five-stand continuous cold rolling high-strength steel strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Preparation thickness is 2.75mm, and width is the QP980 automobile dual-phase steel strip of 1250mm, after five times of continuous cold rolling, be rolled into the plate strip that thickness is 0.7mm, adopt five stands cold rolling high-strength steel plate of the present invention Before and after the quarter corrugated control method of the belt is controlled, the parameters of the lateral movement of the intermediate rollers of each frame are shown in Table 1:

[0102] Table 1 The method of the present invention puts into use before and after each frame intermediate roller traverse parameter

[0103]

[0104] As can be seen from Table 1, before the method of the present invention is put into use, the intermediate roller traverse of the fifth frame has approached the limit value, while the intermediate roller traverse of the front several frames still has a margin. Figure 5 It is the shape of the finished strip before the method of the present invention is put in...

Embodiment 2

[0106] Preparation thickness is 4.0mm, and width is the DP980 automobile dual-phase steel strip of 1150mm, after five times of continuous cold rolling, be rolled into the plate strip that thickness is 1.8mm, adopt five stand cold rolling high-strength steel plates of the present invention Before and after the quarter corrugated control method of the belt is controlled, the parameters of the lateral movement of the intermediate rollers of each frame are shown in Table 2:

[0107] Table 2 The parameters of the lateral movement of the intermediate rollers of each frame before and after the method of the present invention is put into use

[0108]

[0109] As can be seen from Table 2, before the method of the present invention is put into use, the traverse of the middle roller of the fifth frame is close to the limit value, while the traverse of the intermediate rollers of several front stands still has a margin. Figure 7 It is the shape of the finished strip before the method ...

Embodiment 3

[0111] Preparation thickness is 3.0mm, and width is the DP780 automobile dual-phase steel strip of 1200mm, after five times of continuous cold rolling, be rolled into the plate strip that thickness is 0.8mm, adopt five stand cold rolling high-strength steel plates of the present invention Before and after the quarter corrugated control method of the belt is controlled, the parameters of the lateral movement of the intermediate rollers of each frame are shown in Table 3:

[0112] Table 3 The method of the present invention puts into use before and after each frame middle roller traverse parameter

[0113]

[0114] As can be seen from Table 3, before the method of the present invention is put into use, the traverse of the middle roller of the fifth frame is close to the limit value, while the traverse of the intermediate roller of the front several frames still has a margin. Figure 9 It is the shape of the finished strip before the method of the present invention is put into...

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
thicknessaaaaaaaaaa
widthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a quarter wave shape control method of a five-stand cold continuous rolling high-strength steel plate and strip, and relates to the technical field of cold continuous rolling strip shape control. This method first gives the prerequisites for using the method of the present invention to control the quarter wave shape, then sets the last rack as the i-th rack, and calculates the quarter wave shape value at the exit of the i-1 rack. ; Then compare the calculated value of the quarter-wave plate shape at the outlet of the i-th frame with the actual measured value, and repeat the calculation until it meets the quality requirements of the finished plate shape; then calculate the correction value of the lateral shift of the middle roller of the i-1 frame, if If the requirements are not met, the correction value after the correction of the lateral movement of the middle roller of the i-2th stand is calculated until the quarter wave deviation of the exit plate shape of the i-th stand reaches the requirements of the finished product shape quality. The control method provided by the invention improves the control accuracy of the quarter wave shape of the front frame, reduces the control pressure of the end frame, and improves the shape quality of the product.

Description

technical field [0001] The invention relates to the technical field of cold-rolled strip shape control technology, in particular to a method for controlling the quarter-corrugated shape of a five-stand cold-rolled high-strength steel strip. Background technique [0002] Cold-rolled steel strips are widely used in various fields of the national economy. With the improvement of the quality of cold-rolled steel strips, users' requirements for the shape quality are also gradually increasing. Good shape quality plays a vital role in improving product quality and yield in downstream processes. [0003] Like the thickness and width, the strip shape is an important index to measure the geometrical accuracy of the strip steel. It is the degree of warping of the strip steel intuitively, and its essence is the distribution of the internal residual stress of the strip steel along the width direction of the strip after rolling. Common board shape defects are mainly divided into edge wav...

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 Patents(China)
IPC IPC(8): B21B37/28
CPCB21B37/28
Inventor 彭良贵金鑫王煜李长生武志成
Owner NORTHEASTERN UNIV LIAONING
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com