Home Products Case About Us Contact Us
···

hardness of sand and iron ore

Shape and Gauge Control of Strip in a Cold Rolling Mill ...

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 of the strip.

Get Price

Robust Shape Control in a Sendzimir Cold-Rolling Steel Mill

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.

Get Price

Shape Detecting and Shape Control of Cold Rolling Strip ...

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 ...

Get Price

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 ...

Get Price

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

2011-9-1  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.

Get Price

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

Get Price

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

2013-11-12  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. One of the conventional control strat-egy of strip thickness is using of BISRA measurements to infer strip thickness. This relationship (more often referred to as

Get Price

JSW Cold Rolling Mills Widest Cold Rolling Mill for ...

In this, pickling line is linked with cold rolling mill, which provides better shape control, delivers significant improvements with regard to mill productivity, yield, and production as a result of the elimination of strip threading and tailing-out operations.

Get Price

Fundamentals of Roll Cooling and Control of Flatness at ...

2021-1-18  FUNDAMENTALS OF ROLL COOLING AND CONTROL OF FLATNESS AT PRIMARY COLD REDUCTION ... roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC ... shape, surface and in the worst case lubrication, which is where modeling becomes a very important part of the design procedure to ensure. Other Design ...

Get Price

Design and function of CVC rolls as a flatness actuator in ...

2012-5-7  rolled, cold rolled, intermediate annealed and in most cases grinded on the surface [2]. Flatness measuring – the flatness measuring roll On the exit side of the mill the strip is bent over a segmented roll, the flatness measuring roll. This roll measures the force on each segment and in this way the flatness of the strip can be decided.

Get Price

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

2013-11-12  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

Get Price

Flatness Control System of Cold Rolling Process with ...

2021-5-11  3. Automatic shape control system During rolling, mill roll profile is subject to changes because of deflection and thermal expansion and thereby the shape of the material varies constantly. Conventionally, skilled operators checked the shape and adjusted mill

Get Price

A Sheffield Hallam University thesis

2021-4-26  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

Get Price

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 ...

Get Price

Robust Shape Control in a Sendzimir Cold-Rolling Steel Mill

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.

Get Price

Analysis of Shape Control Characteristics for UCMW Cold ...

2020-8-7  cold-rolled strip products, the shape quality requirements on cold-r olled strips have become more. stringent. Therefore, rolling mills with high-precision shape control ability have been mor e and.

Get Price

Analysis of Shape Control Characteristics for UCMW Cold ...

problem of high precision shape quality of cold-rolled strips, J. G. Cao et al. [17] proposed a control strategy which is a whole-unit integrated shape for the strip cold rolling mill.

Get Price

Design and function of CVC rolls as a flatness actuator in ...

2012-5-7  rolled, cold rolled, intermediate annealed and in most cases grinded on the surface [2]. Flatness measuring – the flatness measuring roll On the exit side of the mill the strip is bent over a segmented roll, the flatness measuring roll. This roll measures the force on each segment and in this way the flatness of the strip can be decided.

Get Price

Prediction of shape defects over length of cold rolled ...

Abstract A model based on an artificial neural network (ANN) has been developed for prediction of flatness of cold rolled (CR) sheet in a tandem cold rolling mill for white goods applications. Various process parameters including roll bending, roll shifting, tensions between stands etc., which affect flatness of CR sheet are considered in the model.

Get Price

Equation of Shape Control and Edge Drop on UCMW

In this paper, a new strip profile control equation is established originally, according to the ways of strip shape control technology of large-scale tandem cold rolling mills. The new equation describes both the shape control and edge drop control. Some verification is developed in the equation based on the 1420mm UCMW tandem cold mill.

Get Price

Analysis of Shape Control Characteristics for UCMW Cold ...

2020-8-7  cold-rolled strip products, the shape quality requirements on cold-r olled strips have become more. stringent. Therefore, rolling mills with high-precision shape control ability have been mor e and.

Get Price

Analysis of Shape Control Characteristics for UCMW Cold ...

problem of high precision shape quality of cold-rolled strips, J. G. Cao et al. [17] proposed a control strategy which is a whole-unit integrated shape for the strip cold rolling mill.

Get Price

Flatness Control System of Cold Rolling Process with ...

2021-5-11  3. Automatic shape control system During rolling, mill roll profile is subject to changes because of deflection and thermal expansion and thereby the shape of the material varies constantly. Conventionally, skilled operators checked the shape and adjusted mill

Get Price

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 ...

Get Price

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 asymmetric bending technologies on strip profile. To reduce asymmetric defects of strip shape as much ...

Get Price

A Sheffield Hallam University thesis

2021-4-26  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

Get Price

Fundamentals of Roll Cooling and Control of Flatness at ...

2021-1-18  FUNDAMENTALS OF ROLL COOLING AND CONTROL OF FLATNESS AT PRIMARY COLD REDUCTION ... roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC ... shape, surface and in the worst case lubrication, which is where modeling becomes a very important part of the design procedure to ensure. Other Design ...

Get Price

Malaysia Cold Rolled Supplier or Manufacturer

2011-9-14  Outstanding shape control (flatness) Cold Rolled Steel is a mill product made with a high degree of gauge accuracy and uniformity of physical characteristics. The smooth deoxidized matte finish gives an excellent base for paint, lacquer and enamel. Box annealing and absence of scale permit stamping and moderate drawing operations.

Get Price

Quality Improvement in Finished Cold Rolled - IJSER

2016-9-9  Practically the all defects in cold rolling inspected before dispatching the material to the customer at skin pass mill. RC Inspection wings generally focused over four “S” i.e. Shape, Size, Surface and Safety during their inspection. Cold rolling improves the surface finish and holds tighter tolerances. This will certainly affect the quality

Get Price

Rolling Mills Industrial Efficiency Technology Measures

2017-9-13  In rolling mills, intermediate steel products are given their final shape and dimension in a series of shaping and finishing operations. Most of the slabs are heated in reheating furnaces and rolled into final shape in hot– or cold–rolling or finishing mills. While some products (e.g. reinforcement bars, steel plates) only require hot-rolling, some others may require both hot– and cold ...

Get Price