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Read moreSHAPE CONTROL SENSOR FOR COLD ROLLING MILLS . United States Patent 3693427 . Abstract: An apparatus for sensing "shape" of a strip in processing by a rolling mill including two or more rolls over which the strip is passed between successive stands of the mill, each roll being journaled at each end and each journal being supported by a load cell
Get Price2020-10-6 · 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
Get PriceThe rolling mill apparatus according to claim 1, 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
Get Price2013-11-12 · 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 PriceThe 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 hardness. Previous approaches to the problem suggest storing a large number of precompensator matrices to cater
Get Price2011-9-14 · 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 PriceProcesses – Cold Rolled. COLD REVERSING MILL (CRM) The CRM is a single-stand 4 high mill for cold rolling hotrolled and pickled material from the pickling line. The overhead crane deposits a coil on to one of the coil storage stations of the entry coil car.
Get Price2021-5-11 · 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 Price2021-8-27 · lated work hardening in tandem cold rolling and is the most basic technological parameter in process control and calculation of the mechanical parameters in the model system, as shown in Figure 1. The model takes the in uence of the initial material and accumulated strain rate on the deformation resistance of cold rolled strip into account.
Get Price2021-1-18 · 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 Pricestrength of cold-rolled strip is needed. Elastic deformation analysis of roll systemhas the most important position on shape control theory. It has effect on the design of mill roll system structure, as well as optimizing reduction procedures and improving the quality of the shape [6-9].
Get Price2011-10-5 · 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 Price2016-9-9 · Practically the all defects in cold rolling inspected before dispatching the material to the customer at skin pass mill. R&C 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 Price2021-1-18 · 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 Price2020-10-13 · Cold rolled strips are widely used in various aspects of national economy such as electric works, automobile, home appliance and light industry. Besides the increasing requirement for quantity of cold rolled strips, customers have been paying more and more attention to the strip shape quality of the rolled products [1].
Get Price2013-11-12 · 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 PriceThe 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. The research result about mechanics of edge drop and it's control have been applied in tandem cold rolling mill.
Get Price2018-9-25 · Mechanics of Cold Rolling of Thin Strip 443 where yiw is the vertical deflection of the work roll at element i, gijw (, ) is the influence function for the work roll deflection due to the combined bending and shear forces generated by rolling load, giwf is the influence function for the work roll deflection due to the force generated by the roll bending mechanism, k represents the minimum element
Get Price2021-1-18 · 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 Price2020-8-7 · 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 Price2021-2-17 · early on to base the product on a mill-duty meas-uring roll equipped with Pressductor sensors. The first system was installed in 1967 in Alcan's cold rolling mill in Kingston, Canada, where it under-went comprehensive tests →2. — 01 For 50 years, ABB's Stressometer system has helped rolling mill opera-tors improve quality and productivity.
Get Price2021-4-26 · 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 Price2010-12-9 · 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 PriceBased 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 Price2021-8-27 · lated work hardening in tandem cold rolling and is the most basic technological parameter in process control and calculation of the mechanical parameters in the model system, as shown in Figure 1. The model takes the in uence of the initial material and accumulated strain rate on the deformation resistance of cold rolled strip into account.
Get PriceShape (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
Get PriceIn 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 Priceproblem 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 PriceShape (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
Get Price2011-9-1 · 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.
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