Research on New Shapemeter of Cold Rolling Thin Strip

2013 ◽  
Vol 710 ◽  
pp. 238-242
Author(s):  
Bing Qiang Yu ◽  
Li Po Yang
Keyword(s):  
Cold Rolling ◽  
Shape Control ◽  
Steel Strip ◽  
Digital Signal ◽  
Thin Strip ◽  
Strip Surface ◽  
Technical Requirements ◽  
Strip Shape ◽  
Industrial Adjustment ◽  
Shape Detecting

Based on the shape detecting principle and the digital signal technology, a new shape meter was developed thorough theoretical analysis and industrial adjustment to develop the shape detecting roll, the shape signal processing method, the original signal compensation mechanism and so on. The shape meter has good performance and stability, which can effectively avoid the scratch of steel strip surface, accurately detect real online strip shape and provide accurate online shape datum for shape control system. It was applied in 1250 mm cold rolling mill, the actual industrial tests prove that the shape signal was stable and reliable, met the harsh condition and the online technical requirements, and could improve shape quality significantly.

Research on the Entire Roll Type Shape Meter of Cold Rolling Strip and its Industrial Application

2012 ◽  
Vol 572 ◽  
pp. 359-363 ◽  
Author(s):  
Bing Qiang Yu ◽  
Li Po Yang ◽  
Hong Min Liu
Keyword(s):  
Cold Rolling ◽  
Shape Control ◽  
Steel Strip ◽  
Digital Signal ◽  
Strip Surface ◽  
Loop Control ◽  
Technical Requirements ◽  
Roll Type ◽  
Shape Detecting ◽  
Close Loop Control

In order to increase shape measuring precision of cold strip, based on the shape detecting principle and the digital signal technology, a new entire roll type shape meter is developed thorough theoretical analysis and industrial adjustment to develop the shape detecting roll, the shape signal processing method, the original signal compensation mechanism and so on. The shape meter has good performance and stability, which can effectively avoid the scratch of steel strip surface, accurately detect real online strip shape and provide accurate online shape datum for shape control system. It was applied in 1250 mm cold rolling mill, the actual industrial tests prove that the shape signal was stable and reliable, met the harsh condition and the online technical requirements, and could improve shape quality significantly. And the shape close loop control of the 0.18 mm thin cold strip was successful realized.

A Method to Avoid Strip Breakage for Thin Strip Steel in Cold Rolling

2014 ◽  
Vol 1004-1005 ◽  
pp. 1211-1215 ◽  
Author(s):  
Bo Liu ◽  
Cheng Long Tang ◽  
Ting Quan Gu
Keyword(s):  
Cold Rolling ◽  
Control Method ◽  
Steel Strip ◽  
Reduction Rate ◽  
Thin Strip ◽  
Strip Steel ◽  
Strip Shape ◽  
Before And After ◽  
Width Reduction ◽  
Control Accuracy

An automatic control method to prevent thin strip steel from breaking in cold rolling is presented in this paper. The strip width detector is equipped at the entry and exit sections of the cold rolling mill respectively, thus the width reduction of the strip steel before and after the mill can be real-time detected . The signal of the width reduction rate exceeding a certain value means that the strip edge is too tight. Then, via the strip shape adjusting mechanism, the edge of the strip steel becomes loose and the strip breakage can be avoided. By applying this method, the incidence of strip breakage can be reduced and the productivity capacity can be increased, and more, the width control accuracy of the rolled steel strip can be improved. The validity of the proposed method is verified by the example simulation.

scholarly journals Analysis of Thin Strip Profile during Asymmetrical Cold Rolling with Roll Crossing and Shifting Mill

2014 ◽  
Vol 894 ◽  
pp. 212-216 ◽  
Author(s):  
Abdulrahman Aljabri ◽  
Zheng Yi Jiang ◽  
Dong Bin Wei
Keyword(s):  
Cold Rolling ◽  
Shape Control ◽  
Work Roll ◽  
Rolling Process ◽  
Thin Strip ◽  
Asymmetrical Rolling ◽  
Strip Shape ◽  
Strip Profile ◽  
Profile Control ◽  
The One

Strip profile control during rolling is required to assure the dimensional quality of rolled thin strip is acceptable for customers. Throughout rolling, the strip profile is controlled by using the advanced shape control rolling mill, such as the combination of work roll crossing and shifting during asymmetrical rolling, the one of the valuable methods to control the strip profile quality in rolling process. In this paper, the influences of cold rolling parameters such as the crossing angle and axial shifting value of work rolls on the strip profile are analysed. The strip shape control is discussed under both symmetrical and asymmetrical rolling conditions. The obtained results are appropriate to control the rolled thin strip profile in practice.

Strip Shape Analysis of Asymmetrical Cold Rolling of Thin Strip

2010 ◽  
Vol 97-101 ◽  
pp. 81-84 ◽  
Author(s):  
Zheng Yi Jiang ◽  
Xiao Zhong Du ◽  
Yan Bing Du ◽  
Dong Bin Wei ◽  
Matthew Hay
Keyword(s):  
Finite Element ◽  
Cold Rolling ◽  
Finite Element Model ◽  
Shape Control ◽  
Thickness Distribution ◽  
Element Model ◽  
Thin Strip ◽  
Strip Shape ◽  
Rolling Practice ◽  
Good Agreement

Strip shape control during cold rolling of thin strip is a challenge in rolling practice. In the paper, finite element model of strip shape during cold rolling of thin strip in asymmetrical rolling case was successfully developed, and the strip shape such as the thickness distribution along the strip width have been obtained. The developed finite element model has been verified with the experimental value, which shows they are in good agreement. The obtained results are applicable to control the rolled thin strip shape in practice.

Shape Detecting and Shape Control of Cold Rolling Strip

2011 ◽  
Vol 311-313 ◽  
pp. 902-905 ◽  
Author(s):  
Li Po Yang ◽  
Bing Qiang Yu
Keyword(s):  
Cold Rolling ◽  
Rolling Mill ◽  
Shape Control ◽  
Digital Signal ◽  
Cold Rolling Mill ◽  
Shape Deviation ◽  
Cold Rolling Strip ◽  
Rolling Strip ◽  
Loop Shape ◽  
Shape Detecting

Based on the shape detecting principle and the DSP (Digital Signal Processing) technology, a high-precision shape detecting system of cold rolling strip is developed to meet industrial application. It was successfully used in Angang 1250 mm HC 6-high reversible cold rolling mill. The precision of shape detecting was 0.2 I, the shape deviation was controlled within 6 I after the close loop shape control was input.

Research on Shape Detecting System of Cold Rolling Strip

2011 ◽  
Vol 697-698 ◽  
pp. 525-528
Author(s):  
Li Po Yang ◽  
Bing Qiang Yu
Keyword(s):  
Cold Rolling ◽  
Rolling Mill ◽  
Shape Control ◽  
Shape Index ◽  
Cold Rolling Mill ◽  
Cold Rolling Strip ◽  
Rolling Strip ◽  
Quality Stability ◽  
Loop Shape ◽  
Shape Detecting

Comprehensive considered actual working conditions of cold rolling mill, a high precision shape detecting system of cold rolling strip was developed to meet industrial application. Consideration to both follow-up processing technology requirements, dynamic flatness standard curves could be formulated according to different rolling conditions and product specifications, and reliable shape datum were provided for close-loop shape control. This system was successfully used in Angang 1250 mm HC 6-high reversible cold rolling mill. Then the shape index and the quality stability of cold rolling strip were increased significantly, the errors between the calculated values and measured values of the total tension were less than 3%, the precision of shape detecting is 0.2 I and shape indices was within 6 I after the close-loop shape control was input.

Modelling of Strip Shape and Profile during Cold Rolling of Ultra Thin Strip

2012 ◽  
Vol 706-709 ◽  
pp. 1421-1426
Author(s):  
Zheng Yi Jiang ◽  
Xiao Wei Cheng ◽  
Xiao Zhong Du ◽  
Dong Bin Wei ◽  
Xiao Feng He
Keyword(s):  
Finite Element ◽  
Cold Rolling ◽  
Thickness Distribution ◽  
Element Model ◽  
Work Roll ◽  
Thin Strip ◽  
Asymmetrical Rolling ◽  
Strip Shape ◽  
Experimental Values ◽  
Edge Drop

In this paper, finite element models of the strip shape during cold rolling of ultra thin strip in both symmetrical and asymmetrical rolling cases have been successfully developed, and the strip shape such as the thickness distribution along the strip width has been obtained. The strip shape and edge drop are discussed under both symmetrical and asymmetrical rolling conditions. Simulation results show that the asymmetrical rolling can reduce strip edge drop dramatically. The work roll edge curve also affects strip shape significantly. The developed finite element model has been verified with the experimental values.

scholarly journals Modeling of Strip Shape during Cold Rolling of Thin Strip

2010 ◽  
Vol 443 ◽  
pp. 9-14 ◽  
Author(s):  
Zheng Yi Jiang ◽  
X.Z. Du ◽  
Yan Bing Du ◽  
Dong Bin Wei ◽  
Matthew Hay
Keyword(s):  
Finite Element ◽  
Cold Rolling ◽  
Rolling Force ◽  
Thickness Distribution ◽  
Simulation Models ◽  
Element Model ◽  
Thin Strip ◽  
Strip Shape ◽  
Element Simulation ◽  
Strip Quality

Strip shape is an important factor affecting the strip quality significantly during cold rolling of thin strip. In the paper, finite element simulation models of the strip shape in cold rolling for both symmetrical and asymmetrical rolling cases were successfully developed. The strip edge drop and the effect of the rolling force on the strip shape (the thickness distribution along the strip width) have been obtained. The developed finite element model has been verified with the experimental value, which shows they are in good agreement. The obtained results are applicable to control the rolled thin strip shape during cold rolling practice.

scholarly journals Thin Strip Profile Control Capability of Roll Crossing and Shifting in Cold Rolling Mill

2013 ◽  
Vol 773-774 ◽  
pp. 70-78 ◽  
Author(s):  
Abdulrahman Aljabri ◽  
Zheng Yi Jiang ◽  
Dong Bin Wei ◽  
Xiao Dong Wang ◽  
Hasan Tibar
Keyword(s):  
Cold Rolling ◽  
Rolling Mill ◽  
Rolling Force ◽  
Work Roll ◽  
Rolling Process ◽  
Thin Strip ◽  
Strip Rolling ◽  
Strip Shape ◽  
Strip Profile ◽  
Profile Control

Controlling cold strip profile is a difficult and significant problem has been found in industry during thin strip rolling. At present choosing the new type of strip rolling mill is the one of main methods to control the strip shape quality in cold rolling. The influences of rolling process parameters such as the work roll cross angle and work roll shifting on the strip shape and profile of thin strip are recognised throughout this study. The results show that the roll crossing and shifting is efficient way to control the strip shape. The increase of the work roll crossing angle would lead to improve the strip profile significantly by decreasing the exit strip crown and edge drop. The strip profile would be enhanced if the axial roll shifting was increased. Moreover, the total rolling force was analysed in detail by changing the roll cross angle and axial shifting roll.

Analysis of Advanced Strip Shape during Cold Rolling of Thin Strip

2010 ◽  
Vol 654-656 ◽  
pp. 206-209
Author(s):  
Zheng Yi Jiang ◽  
Xiao Zhong Du ◽  
Yan Bing Du ◽  
Dong Bin Wei ◽  
Xiao Feng He
Keyword(s):  
Finite Element ◽  
Cold Rolling ◽  
Finite Element Model ◽  
Element Model ◽  
Thin Strip ◽  
Speed Ratio ◽  
Strip Shape ◽  
Element Simulation ◽  
Edge Drop ◽  
Rolling Practice

The demand of thin gauge strip with good quality such as the strip shape and surface finish is significantly increasing. In this study, finite element model of the strip shape during cold rolling of thin strip in asymmetrical rolling was developed, and the finite element simulation of the thin strip shape has been carried out in LS-DYNA. The effects of reduction and speed ratio on the strip shape and profile and the strip edge drop have been obtained. The developed finite element model has been verified with the experimental data. The obtained results are applicable to the control of the rolled thin strip shape in rolling practice.

Sign in / Sign up

Export Citation Format

Share Document