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shape control in cold rolled mill Description

  • Robust Tension Control of Strip for 5-Stand

    Tandem cold rolling process is a nonlinear complex system with external and internal uncertainties and significant disturbances. The improvement in the quality of the final output depends on the control strategy of centerline thickness and interstand tension. This paper focuses on interstand tension control problem in 5-stand tandem cold rolling mills.

  • Fundamentals of Roll Cooling and Control of Flatness at

    Flatness of rolled strip is referred to as "Shape" A primary cold reduced strip exhibits two flatness states: ƒ Flat - Exhibits no waves, buckles or pockets, line bow or cross bow ƒ Non-Flat - Exhibits waves, buckles or pockets, line bow or cross bow

  • [PDF] Robust shape control in a sendzimir

    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. Previous approaches to the problem suggest storing a large number of precompensator matrices to cater for the full range of operating conditions.

  • Strip Thickness Control of Cold Rolling Mill with Roll

    12.11.2013· Cold Rolling Mill; Thickness Control; Roll Eccentricity; Fuzzy Neural Network; Eccentricity Compensation 1. Introduction Rolling strip is widely used for automobile manufactur-ing, food packaging, electric appliances, ma- chinery, light industry, instruments, communications, mil-itary affairs and other fields [1]. The design of a control-ler in the cold rolling

  • Rolling (metalworking) - Wikipedia

    Cold rolling shapes requires a series of shaping operations, usually along the lines of sizing, breakdown, roughing, semi-roughing, semi-finishing, and finishing. If processed by a blacksmith, the smoother, more consistent, and lower levels of carbon encapsulated in the steel makes it easier to process, but at the cost of being more expensive.

  • Difference Between Hot and Cold Rolled Steel |

    11.09.2014· Hot rolled steel is typically cheaper than cold rolled steel due to the fact that it is often manufactured without any delays in the process, and therefore the reheating of the steel is not required (as it is with cold rolled). When the steel cools off it will shrink slightly thus giving less control on the size and shape of the finished product when compared to cold rolled.

  • temper, hot & cold rolling mill-steel

    Typical upgrades to hot mill stands include the addition of roll bending for profile and shape control as well as the installation of hydraulic roll force systems for automatic gauge control. Customers are also looking to see production improvements by eliminating mill down time through shorter roll changes. This may be accomplished by modernizing the mill window and incorporating quick work

  • cold rolled mill process - bokesbar.be

    The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.

  • Everything you need to know about flatteners

    The mills have come a long way in the last few years in controlling shape and thickness, but perfection is difficult. You need to understand this--not because you're going to be in the rolling mill business, but because you must be realistic when talking to the mills about your expectations for product quality. The producer mills would like to make crown-free flat-rolled coils every time if

  • Tandem cold-mill solutions by Primetals

    Tandem cold-mill solutions from Primetals Technologies stand for high product yields combined with flexible production, low operational costs and simplified maintenance work. Depending on the product mix, the production capacity of continuous tandem mills from Primetals Technologies can exceed 1.2 million tons per year.

  • METALS Improving quality and cost-efficiency in cold

    02 Overview tandem cold rolling mill Superimposed strategies and solutions are available for: • Pass scheduling and set-up model • Threading and unthreading • Tension, torque and/or roll force distribution in multi-stand mills • Roll gap stabilization to run wedge strip — 03 Main drives — 04 Gauge control

  • 2.2 Automatic Flatness Control System (AFC) ||

    We, Kobe Steel, Ltd., have supplied many aluminum and non-ferrous rolling mills since 1965. We can meet your expectations and provide the best solution of the rolling mill technologies based on a plenty of our results and experiences.

  • Table 1 from Strip Thickness Control of Cold

    DOI: 10.4236/ENG.2014.61005 Corpus ID: 30768077. Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network @article{Hameed2014StripTC, title={Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network}, author={Waleed Ishaq Hameed and Khearia A. Mohamad}, journal={Engineering},

  • What is "Cold Rolling" Stainless Steel and Other

    In simple terms, cold rolling is the process of strengthening steel by changing its shape without using heat. Cold rolling, unlike hot rolling such as with hot rolled steel, can only occur when a metal is below its re-crystallization temperature. Where hot rolling is performed using high temperatures, cold rolling is performed at room temperature. Instead of heat, mechanical

  • Flatness Control System of Cold Rolling Process with

    The automatic flatness control system, IHI Sheetflat, has been applied to many cold rolling mills since 1985. The pneumatic type shape roll is used as the shape sensor. Recently, requirements for quality products have become much more important. Therefore, performance of the shape roll has also been improved to meet the requirements.

  • Control Strategies of Asymmetric Strip Shape in

    01.09.2011· 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.

  • a Numerical Simulation of Strip Profile in a 6

    19.03.2020· A shape control strategy by bending force combination adjustment for 6-hi cold rolling mills was proposed to solve the theoretical insufficiency of 4-order shape defect control by two kinds of

  • UDC 531 . 717 . 2 : 681 . 3 : 621 . 771 . 23 . 016 . 2

    Hot rolling mills of high crown/shape control capacities such as a 6-high mill and a cross roll mill were developed, and highly accurate shape/crown control was realized by adequately setting and dynamically controlling the posi-tioning of the intermediate rolls of a 6-high mill or the cross angle of a cross roll mill and the amount of roll bending. As a result, as far as the strip shape and

  • (PDF) Flatness Defect in Thin Strip Cold Rolling

    Roll bending methods of crown control in four-high plate mills. Article. Jan 1968; K.N. Shohet; N.A. Townsend ; View. Latent and Manifested flatness predictions in thin strip cold rolling using a

  • cold rolled mill process - bokesbar.be

    The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.

  • shape control in cold rolled mill - bokesbar.be

    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.

  • The Differences Between Hot and Cold Rolled

    Cold-rolling steel allows for the creation of very precise shapes. Since the process is performed at room temperature, the steel will not shrink as it cools, as it does in the hot-rolled process. The exterior finish of cold-rolled steel is very desirable when aesthetics and visual appeal are a priority in your project.