Disable Preloader

shape control in cold rolled mill

  • 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 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

  • What s the difference between hot and cold rolling ShapeCUT

    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 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

  • Cold Rollingan overview ScienceDirect Topics

    Cold rolling reduction is an important factor that affects drawability of IF steel. It has been observed that increasing cold rolling reduction increases the r m value, at least up to 90 34 .This effect has been shown in Fig. 5.14.Perhaps the most important parameters in the production of a strong 111 recrystallization texture are the annealing temperature and the time of holding 35 . Cold rolling reduction is an important factor that affects drawability of IF steel. It has been observed that increasing cold rolling reduction increases the r m value, at least up to 90 34 .This effect has been shown in Fig. 5.14.Perhaps the most important parameters in the production of a strong 111 recrystallization texture are the annealing temperature and the time of holding 35 .

  • 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. Sep 26, 2020 · Effect on Steel in Cold Rolling Mill A Review VSRD International Journal of Mechanical, Civil, Automobile and Production Engineering, Vol. 3 No.3 e

  • Fundamentals of Roll Cooling and Control of Flatness at

    Fig 2, Heat Migration in Cold Mill Work rolls (Hotter regions shown in red) This localized heat input / output process results in a non-uniform distribution of heat, circumferentially around the roll and transversely across the roll body. Additionally the roll is subjected to Thermal and 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.

  • 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 stable. 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.

  • Shape Control in Cluster MillsRolling Mill Technology

    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 cold rolled stainless apparent shape control devices have been innovated and applied to mill operation in the metal industry. And numerous crown/shape mathematical models were developed in

  • HOT ROLLING PRACTICEAn Attempted Recollection

    motors. These are known as mill stands. The layout of a rolling mill varies, from a simple single stand mill to several stands positioned either side by side or in a line. A mechanism, commonly called a roller table, directs the work piece to the rolls, and another roller table for Nov 12, 2013 · description of the cold rolling process is presented. In Section 3, a mathematical model has been driven for sin-gle-stand cold rolling mill. In Section 4, architecture and learning algorithm Fuzzy Neural Networkof have been presented. In Section 5, thickness control with roll ec-centricity compensation has been proposed. In Section 6,

  • 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. 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

  • 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 stable. Nov 12, 2013 · In rolling mill, the accuracy and quality of the strip exit thickness are very important factors. To realize high accuracy in the strip exit thickness, the Automatic Gauge Control (AGC) system is used. Because of roll eccentricity in backup rolls, the exit thickness deviates periodically. In this paper, we design PI controller in outer loop for the strip exit thickness while PD controller is

  • (PDF) Review on Cold Rolling Mill Roll Deformation

    Sep 26, 2020 · Effect on Steel in Cold Rolling Mill A Review VSRD International Journal of Mechanical, Civil, Automobile and Production Engineering, Vol. 3 No.3 e Without sulfide shape control in these hot-rolled steels, lower expansion can occur due to the tearing which initiates on the punched edge at elongated sulfide inclusions. However, even in a material with sulfide shape control, there is a rather important degradation of

  • A BASIC UNDERSTANDING OF THE MECHANICS OF

    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 interestalso, 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 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

  • Cold Rolled supplier in Malaysia (Importer and Exporter)

    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. 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

  • (PDF) A JOURNEY TO OPTIMAL ROLLING MILL DESIGN FROM

    cold rolled stainless apparent shape control devices have been innovated and applied to mill operation in the metal industry. And numerous crown/shape mathematical models were developed in 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 reduction.

  • Everything 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 product. 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

  • Research and Development Trend of Shape Control for Cold

    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 stable. 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

  • Controlling flat-rolled shapeThe Fabricator

    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 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 stable.

  • Aluthai Metals Cold Rolled

    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. 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 product.