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shape control in cold rolled mill

Shape and Gauge Control of Strip in a Cold Rolling

2020-10-6  Comprehensive control of the surface roughness and shape of a two stand cold reversing mill is achieved by the optimization of the process parameters, such as rolling force and tension. The rolling force, strip elongation rate, and tension of rolling mill are optimized to achieve comprehensive control of the surface quality and shape

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Robust Shape Control in a Sendzimir Cold-Rolling

1996-6-1  The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness.

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Shape Detecting and Shape Control of Cold Rolling

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.

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Research and Development Trend of Shape Control

2017-7-19  Shape is an important quality index of cold rolling strip. Up to now, many problems in the shape control domain have not been solved satisfactorily, and a review on the research progress in the shape control domain can help to seek new breakthrough directions. In the past 10 years, researches and applications of shape control models, shape control means, shape detection technology, and shape ...

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Control Strategies of Asymmetric Strip Shape in Six

2011-9-1  On one hand, artificial neural networks (ANN) method was applied to strip shape control. A fuzzy control algorithm was devel- oped to control the cold-rolled strip with symmetric irregular shapes by J Y Jung et alcg-'O1 and QIAO Jun-fei et alC1".

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Shape control of alloy steel rolled by sendzimir mill ...

Abstract. In order to improve quarter waves occurred in the wide and thin gauged alloy steel rolled by 20-high sendzimir mill, a computer simulation based on the divided element method and an actual cold rolling experiment were carried out. Quarter waves were simulated by elastic deformation analysis of rolls considering bending deformation of back ...

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Shape Control in Cluster Mills - Rolling Mill Technology ...

2009-11-6  Shape Control in Cluster Mills Michael Sendzimir, 1993 Cluster mills first came into existence in the 1930s. They are characterized by small-diameter work rolls that are supported by a cluster of rolls as shown in figure 1 (which shows the location of eight backing assembly shafts: "A" through "H" containing eccentric saddles and bearings).

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Strip Thickness Control of Cold Rolling Mill with Roll ...

2014-1-13  In the cold rolling process and the precision is strip thickness of cold rolled strips of key quality products. Conventional Automatic roll gap Control (where Gauge, AGC) system used for Automatic correction strip thick-ness accuracy [9]. One of the conventional control strat-egy of strip thickness is using of BISRA measurements

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Mechanics of Cold Rolling of Thin Strip - IntechOpen

2018-9-25  mechanics. With the need for higher quality and productivity in cold strip mill, mathematical models of cold rolling of a strip with a desired shape and dimension, both for mill set-up and for on-line control, have become a key issue in the steel rolling process. One major part of these models concerns the strip and roll deformation, plastically deformed strip shape and profile.

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Control Strategies of Asymmetric Strip Shape in Six

2011-9-1  The combinations of these three control strategies can effectively eliminate asymmetric strip shape defects. Finally, the closed-loop control model of asymmetric flatness at the last stand was given, and the flatness control system with the function of asymmetric strip shape control was also designed for cold tandem mill.

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Robust shape control in a sendzimir cold-rolling steel

Robust shape control in a sendzimir cold-rolling steel mill. Control Engineering Practice, 1997. John Ringwood. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Robust shape control in a sendzimir cold-rolling steel mill.

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Robust shape control in a sendzimir cold-rolling steel

The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness.

Read More
Research and Development Trend of Shape Control

2017-7-19  Shape is an important quality index of cold rolling strip. Up to now, many problems in the shape control domain have not been solved satisfactorily, and a review on the research progress in the shape control domain can help to seek new breakthrough directions. In the past 10 years, researches and applications of shape control models, shape control means, shape detection technology, and shape ...

Read More
Shape control of alloy steel rolled by sendzimir mill ...

In order to improve quarter waves occurred in the wide and thin gauged alloy steel rolled by 20-high sendzimir mill, a computer simulation based on the divided element method and an actual cold rolling experiment were carried out. Quarter waves were simulated by elastic deformation analysis of rolls considering bending deformation of back up rolls and the effect of control actuators on ...

Read More
Strip Thickness Control of Cold Rolling Mill with Roll ...

2014-1-13  In the cold rolling process and the precision is strip thickness of cold rolled strips of key quality products. Conventional Automatic roll gap Control (where Gauge, AGC) system used for Automatic correction strip thick-ness accuracy [9]. One of the conventional control strat-egy of strip thickness is using of BISRA measurements

Read More
Control Strategies of Asymmetric Strip Shape in Six-High ...

It is a complicated problem for cold-rolled strip to improve asymmetric strip shape in strip production. A roll system and strip coupled model of six-high cold rolling mill was established with finite element method to estimate the effect of intermediate roll shifting, tilting, symmetric and

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Control Strategies of Asymmetric Strip Shape in Six

It is a complicated problem for cold-rolled strip to improve asymmetric strip shape in strip production. A roll system and strip coupled model of six-high cold rolling mill was established with finite element method to estimate the effect of intermediate roll shifting, tilting, symmetric and asymmetric bending technologies on strip profile. To reduce asymmetric defects of strip shape as much ...

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ROLLED STRIP SHAPE CONTROL USING WORK ROLL

We claim 1. A method of controlling the shape of a rolled strip delivered from a rolling mill which contains a work roll and means to vary roll force created by said work roll, comprising: rolling a strip to final gauge while subjecting said strip to from about 0.25 percent to about 6 percent elongation in length while using a work roll size and a roll force within a range that, for said roll ...

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Cold rolling shape defects of stainless steel wide strips

2010-12-9  Cold rolling shape defects of stainless steel wide strips Chiran Andrei, Moisa Bogdan, Nicolescu Georgian, Priceputu Ionut, Bacinschi Zorica Advances in Control, Chemical Engineering, Civil Engineering and Mechanical Engineering ISBN: 978-960-474-251-6 154 ... be rolled before the mill gets warm again. Thus, the temperature of the mill is ...

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Effects of rolling parameters on the shape of cold rolled ...

2018-4-29  AND SHAPE OF COLD ROLLED STRIP. ABSTRACT Various experimental methods have been used to show the effect of different Sendzimir mill rolling parameters on stainless steel strip shape. Experiments using sister coils, noting the effects of change over a number of coils, and using the "Taguchi" statistical

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Robust shape control in a sendzimir cold-rolling steel

Robust shape control in a sendzimir cold-rolling steel mill. Control Engineering Practice, 1997. John Ringwood. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Robust shape control in a sendzimir cold-rolling steel mill.

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Automatic Detection and Control of Cold Rolled Strip

This paper mainly describes the automatic detection principle and control methods of cold rolled strip shape, and puts forward the main factors for detection and control of shape in the tandem mill in AISC Cold Rolled Sheet Plant, the optimum shape control process is therefore further cleared.

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Flatness Control System of Cold Rolling Process with ...

2021-5-11  In a cold rolling mill where the material is thicker and the tension is higher compared with a foil rolling mill, ... shape control that has a closed loop of a shape roll and a rolling mill as shown in Fig. 9. This has enabled high-speed and stable rolling without relying ...

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Thin strip profile control capability of roll crossing and ...

2020-10-13  the strip shape and profile during cold rolling of thin strip with initial thickness of 0.55 mm was investigated. This can be a reference for building a thin strip shape control model and choosing the type of cold strip rolling mill. 2. Principle and configuration of roll crossing and shifting rolling mill

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Control Strategies of Asymmetric Strip Shape in Six

It is a complicated problem for cold-rolled strip to improve asymmetric strip shape in strip production. A roll system and strip coupled model of six-high cold rolling mill was established with finite element method to estimate the effect of intermediate roll shifting, tilting, symmetric and asymmetric bending technologies on strip profile. To reduce asymmetric defects of strip shape as much ...

Read More
Control Strategies of Asymmetric Strip Shape in Six-High ...

It is a complicated problem for cold-rolled strip to improve asymmetric strip shape in strip production. A roll system and strip coupled model of six-high cold rolling mill was established with finite element method to estimate the effect of intermediate roll shifting, tilting, symmetric and

Read More
ROLLING MILL APPARATUS AND METHOD OF SHAPE

The rolling mill apparatus according to claim 2, wherein said spray portion is provided with a high-temperature spray nozzle and a low-temperature spray nozzle which spray a coolant at different temperatures; and, said shape control portion has a first control mode in which, when a convexity considered to be a change in shape in said rolled ...

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Research and Application of Dynamic Shape Control

The profile and flatness are two key factors evaluating the production quality of strip shape, while the profile includes two terms, which are crown and edge drop. The dynamic shape control of strip is an important issue in the process of tandem cold rolling, and it is usually coupled with the gauge control of strip. In this paper, a set of coupling models, such as crown and flatness coupling ...

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Aluminum Sheet Production: General Principles of Cold ...

2016-11-29  the outgoing shape of the strip and then instructed the mill controls. High performing flatness measurement and control is a critical success factor for flat rolling mills. Outgoing shape is measured by a shapemeter roll (Figure 5). This deflector roll stands between work roll and winder roll at exit side. It measures the tension of the strip

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A BASIC UNDERSTANDING OF THE MECHANICS OF

2003-10-15  on wear is another issue. Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest - also, maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File: SCHROEDER_ROLLS_010703.DOC

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