shape control in cold rolled mill

    KR20020053514A, The present invention has been invented to solve the problems in the prior art as described above, by supplying accurate data of the cold rolled steel sheet to the control of the rolling thickness of the mill stand to eliminate the thickness deviation along the width direction, by using a shape control program It is an object of the present ,6 High Reversible Cold Rolling Mill, Feb 10, 2012· Originally, these mills were designed to be without shape control, as it was thought that the mechanical crown adjustments would suffice, however, modern quality and productivity requirements have meant that successfully operated mills do possess sophisticated shape control systems 17 19Technology of the transverse thickness difference control ,, To solve the problem, the adaptability of the hot rolled strip for the production of cold rolled non-oriented silicon steel and the strip shape control performance of the UCM were investigatedNew Rolling Method R f Reversing Cold Rolling Mill, As illustrated in Figure 1, a reversing cold rolling mill is structured mainly of a mill proper, a winding machine (pay-off ree l), an entry winding machine (tension reel) and a delivery-winding machine (tension reel) There are many cases in which a shearing machine for dividing a strip is installed on the delivery side of the mill, and also a ,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 02 I, the shape deviation was controlled within 6 I after the close loop ,.

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    Malaysia Cold Rolled Supplier or Manufacturer, 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 operationsShape and Gauge Control of Strip in a Cold Rolling Mill ,, Oct 06, 2020· Shape and Gauge Control of Strip in a Cold Rolling Mill satyendra; October 6, 2020; 1 Comment ; AFC, AGC, GBC, GFG, GMC, HGC, reversing mill, SC, tandem mill, TCG, TCS, TCT, Shape and Gauge Control of Strip in a Cold Rolling Mill The economic efficiency of metal rolling processes is strongly correlated to the quality level of the end-rolled ,Shape Control in Cluster Mills, ZR 21-AN mill section with a very small diameter work roll (65 mm) The net result was that the mill was able to take reductions of over 20% per pass on austenitic stainless steel and to keep the strip shape sufficiently flat to obtain good rolling There are three other ways to add crown control ,60 YEARS OF ROLLING MILL TECHNOLOGY By Ford B Cauffiel, cast slabs into plate, the plate into hot rolled coils and the hot rolled coil into cold rolled coil Many of these old mills are still running today as a result of upgraded electrical and hydraulic systems, including hydraulic screwdowns, hydraulic roll bend, and tension controlDanieli Wean United, Pickling Line coupled with Tandem Cold Mill 216 Hot Dip Galvanizing Lin 218 Continuous Annealing Lines , Q-SHAPE CONTROL Crown and flatness control systems Q-COOLMILL , Quick work and back-up roll changhing for rolling mills Q-MPE Mechanical properties estimator for hot rolled flat products Q-HEAT Induction heating system for ,.

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    Rolling Mill Shape Control, Rolling Mill Shape Control System Description Cold rolling mills are an abundant source of control problems Typically, the stand consists of a small diameter work roll and a larger backup roll on each side of the steel strip Significant amounts of energy are required to achieve the desired thickness reductionAnalysis of Cold, Analysis of Cold-Rolled Strip Profile in UCM Mill by Finite Element Method p21 Theoretical Research of the Axial Force about Cross Wedge Rolling p27 A New Calculating Model of Rolling Pressure during Temper Rolling Process , Strip Shape Control and Theory (The Metallurgical Industry Press, Beijing, 1986)JPH0638961B2, A rolling mill having a plurality of operating ends including at least a reduction leveling device as operating ends for recognizing a shape pattern of a rolled material by N (N1) parameters and controlling the shape of the rolled material In the shape control method, the detected plate shape pattern is approximated by a linear function, the ,ROLLING MILL APPARATUS AND METHOD OF SHAPE CONTROL ,, 1 Rolling mill apparatus, comprising: a rolling mill, which rolls a rolled strip between upper and lower work rolls; a shape detecting portion, which detects a degree of flatness of the rolled strip in the width direction of rolled strip which has been rolled by said rolling mill; a spray portion, having a plurality of spray nozzles arranged along the length direction of said upper and lower ,Effects of rolling parameters on the shape of cold rolled ,, 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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    An investigation into the design and performance of an ,, Shape (or flatness) control for rolled steel strip is becoming increasingly important as customer requirements become more stringent Automatic shape control is now more or less mandatory on all new four-high cold mills, but no comprehensive scheme yet exists on a Sendzimir mill This is due to the complexity of the control system design on such a mill, where many more degrees of freedom for ,Robust shape control in a sendzimir cold, Dec 01, 1997· 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 hardnessHOT STRIP MILL, Strip shape control (SmartCrown), as described in detail below: Mill stabilizing device (MSD) At today's demanding condition, maintaining stable operation of rolling mill is becoming difficult MSD is a hydraulic cylinder installed to mill housing window and press a roll ,ROLLED STRIP SHAPE CONTROL USING WORK ROLL SCREWDOWN ,, Nov 26, 1974· 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 025 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 ,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 ,.

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    Research and Development Trend of Shape Control for Cold ,, Jul 19, 2017· 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 ,Research and Development Trend of Shape Control for ,, Research and Development Trend of Shape Control for Cold Rolling Strip 1249 123 strip shape exists in the ultra-wide strip rolling process, and , cold rolling mill was established by Bai, et al [35]to control strip edge drop and keep the rolling process stableEverything you need to know about flatteners and levelers ,, With new automatic gauge control (AGC) technology, the mills are doing much better, but perfection remains an elusive goal At the Cold Mill At the cold mill, every time we change the thickness profile, we also change the flatness The cold mill roll gap should start out being set to the same profile as the crown of the incoming hot mill productControl 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 profileCold rolling shape defects of stainless steel wide strips, example), when the mill has become cold, several strips must be rolled before the mill gets warm again Thus, the temperature of the mill is always in flux This would have no affect on flatness if the changes were equal across the face of the rolls However, while the heat generated by deformation of Advances in Control, Chemical Engineering ,.

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    What's the difference between hot and cold rolling?, You may find that you have less control over the final size and shape of your steel when using a hot rolling method Hot rolling, however, allows steel to be formed into much larger sizes than cold rolling Cold rolling Cold rolling involves a similar process to hot rolling, however the steel is ,Robust shape control in a Sendzimir cold, Abstract The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of coonditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardnessRolling (metalworking), Cold-rolled sheets and strips come in various conditions: full-hard, half-hard, quarter-hard, and skin-rolled Full-hard rolling reduces the thickness by 50%, while the others involve less of a reduction Cold rolled steel is then annealed to induce ductility in the cold rolled steel which is simply known as a Cold Rolled and Close AnnealedControlling flat, The rolling mill can also do some flatness correction The problem is that when the cold mill reduces thickness in one area, it also elongates that area in the rolling direction Trying to control length differential (shape) and thickness differential (profile) at the same time is asking a lot It is optimal to let the rolling mill do what it ,Shape control of alloy steel rolled by sendzimir mill ,, Sep 01, 1996· 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 ,.

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