New Industrial Shape Detecting Equipment of Cold Strip

2013 ◽  
Vol 313-314 ◽  
pp. 677-680
Author(s):  
Bing Qiang Yu ◽  
Li Po Yang
Keyword(s):  
Signal Processing ◽  
Cold Rolling ◽  
Rolling Mill ◽  
Shape Control ◽  
Control Model ◽  
Cold Rolling Mill ◽  
Rolling Strip ◽  
Shape Detecting

Shape has a significant impact on the good quality of follow-up deep-processed steel products. But it is difficult to detect, so a shape detecting equipment of cold rolling strip is developed to meet industrial application, which mainly consist of the shape detecting roller, the collecting ring, the DSP shape signal processing board and the shape control model. The shape detecting system was successfully used in 1250 mm HC 6-high reversible cold rolling mill. The precision of shape detecting is 0.2 I.

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.

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.

More from the Mill

2000 ◽  
Vol 122 (10) ◽  
pp. 82-87
Author(s):  
Michael Valenti
Keyword(s):  
Cold Rolling ◽  
Control Systems ◽  
Rolling Mill ◽  
Space Shuttle ◽  
State Of The Art ◽  
Steel Strip ◽  
Cold Rolling Mill ◽  
Automated Control ◽  
The World

This article focuses on the launch of Sputnik that transfixed the world by Carpenter Technology Corp. By incorporating advanced processing equipment, including a rolling mill, shape controller, annealing furnaces, wet grinders, and leveler with state-of-the-art automated control systems, Carpenter has improved the productivity and quality of its high value strip at a time when Space Shuttle launchings are taken in stride. The Carpenter specialty strip facility installed a cold rolling mill designed by Joseph Frohling GmbH of Olpe, Germany, in November last year, to increase rolling capacity and guarantee that the steel strip it produces meets the desired shape and thickness. In the Frohling mill, strip passes between two working rolls that reduce its thickness to sizes between 0.150 and 0.008 inch, at speeds up to 1500 feet per minute. Carpenter also installed three Ebner vertical annealing furnaces. Coiled strip on mandrels is unwound through each furnace, annealed, then rewound continuously to promote productivity.

Supplementary Setting of Target Flatness Curves for 1450 Strip Cold Rolling Mill

2014 ◽  
Vol 633-634 ◽  
pp. 800-803
Author(s):  
Hai Zhou ◽  
Jin Lan Bai
Keyword(s):  
Cold Rolling ◽  
Orthogonal Polynomials ◽  
Rolling Mill ◽  
Temperature Compensation ◽  
Parameter Setting ◽  
Cold Rolling Mill ◽  
Actual Production ◽  
Original Target ◽  
Flatness Control

In this paper, for the original target flatness curves of flatness control system of a 1450 cold rolling mill can't satisfy the actual production, parameter setting method is adopted to the supplementary setting of target flatness curves. Based on the analysis of the several common forms of orthogonal polynomials, Legendre orthogonal polynomials are selected in supplementary setting according to the actual flatness. Considering temperature compensation, recoiling compensation, edge compensation, and comprehensive control of flatness and crown, 18 supplementary setting target flatness curves is determined aimed at typical product of the mill. Actual production shows that after the supplementary setting target flatness curves put into use, the flatness quality of the product has improved significantly.

scholarly journals Complex study of deformation mode of working stand of pipes cold rolling mill

2018 ◽  
pp. 93-100
Author(s):  
S. R. Rakhmanov ◽  
V. V. Povorotniy
Keyword(s):  
Cold Rolling ◽  
Rolling Mill ◽  
Rational Design ◽  
Deformation Mode ◽  
Cold Rolling Mill ◽  
Rolling Mills ◽  
Complex Study ◽  
Cold Rolling Mills

Elaboration of main concepts of working stands reconstruction, providing an increase of their operation strength and improving of rolled pipes quality and at the same time a decrease of metal intensity is an actual task. Solving of the task will result to a great extent in expanding of technological possibilities and increasing of productivity pipe cold rolling mills.Results of complex study of deformation mode of working stands of pipe cold pilger mills of different designs presented. Influence of working stands parameters both existing and of rational designs on quality of rolled pipes determined. The study determined, that thanks to application of roller installation with ring roll passes and new bearings an expansion of technological possibilities of ХПТ 32 mill reached. Increase of rolled pipes quality was reached by utilization in the drive line of ХПТ 32 mill a modernized working stand of rational design, which has a high operation reliability and an increased rigidity.

scholarly journals Research on Shape Control Characteristics of Non-oriented Silicon Steel for UCMW Cold Rolling Mill

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1066
Author(s):  
Hao Tao ◽  
Hongbo Li ◽  
Jian Shao ◽  
Jie Zhang ◽  
Yujin Liu ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Rolling Mill ◽  
Shape Control ◽  
Rolling Force ◽  
Great Influence ◽  
Work Roll ◽  
Cold Rolling Mill ◽  
Finite Element Software ◽  
Bending Force ◽  
Roll Bending

In order to analyze the flatness control characteristics for a certain UCMW (Universal Crown Mill with Work roll shifting) cold rolling mill, combined with the actual parameters in the field, a static simulation model of the quarter roll systems of the UCMW cold rolling mill was established by the ANSYS finite element software. The bearing roll gaps under the factors of the unit width rolling force, the roll bending force and the roll shift were calculated, which reflects the shape control characteristics and has a great influence on the friction and lubrication characteristics between the roll gaps. Additionally, the shape control strategy of the process parameters in the field was put forward. The results show that, at first, the work roll shift is the most effective shape control means, while the current-used range of the intermediate roll shift cannot make full use of the roll end contour of the intermediate roll, so the intermediate roll negative shift should be considered for shape control. At second, the excessive rolling force goes against the shape control, so the rolling force of each stand should be reasonably distributed. Finally, the shape control ability of the bending force is relatively weak, so the range of the work roll bending force should be appropriately increased.

The Analysis of Influence on the Edge Drop of Tandem Cold Rolling Mill

2014 ◽  
Vol 548-549 ◽  
pp. 363-366
Author(s):  
Xiao Min Zhou ◽  
Xiao Xu Cheng
Keyword(s):  
Cold Rolling ◽  
Rolling Mill ◽  
Shape Control ◽  
Three Dimensional ◽  
Strip Thickness ◽  
Cold Rolling Mill ◽  
Tandem Cold Rolling ◽  
Flatness Control ◽  
Width Reduction ◽  
Edge Drop

Edge-drop control enlarges the shape control theories and technologies. But compared to the profile and flatness control technology, the edge drop control is a developing topic. This paper analyze the influence of strip thickness, strip width, reduction ratio, friction coefficient and deformation resistance on the edge drop based on the elastic deformation of rolls and the three-dimensional plastic deformation of strip for UCMW cold rolling mill. The results will support the further research on the edge drop control for cold rolling mill.

Developing an effective diagnosis for safety improvement in steelworks

2005 ◽  
Vol 4 (4) ◽  
pp. 229-240
Author(s):  
A.R. Hale ◽  
H.A. v.d. Waterbeemd ◽  
R. Potter ◽  
B.H. Heming ◽  
P.H.J.J. Swuste ◽  
...  
Keyword(s):  
Control System ◽  
Cold Rolling ◽  
Rolling Mill ◽  
Safety Management ◽  
Risk Control ◽  
Cold Rolling Mill ◽  
Rich Picture ◽  
Safety Improvement ◽  
Effective Diagnosis ◽  
Current Risk

The paper describes the methods used for a study of the safety management system and culture of a cold rolling mill in a steel plant. It uses data from diverse sources which can be validated against each other and combined to produce a rich picture of the current risk control system and its shortcomings. The paper also describes the proposed improvements and what the plant chose to implement. This step also throws light on the culture of the plant.

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