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shape control in cold rolled mill

Shape Control In Cold Rolled Mill Tandem Cold Mill Metal

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.

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Control Strategies of Asymmetric Strip Shape in Six-High

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.

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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.

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Shape control of alloy steel rolled by sendzimir mill

01/09/1996· 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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Hot-Rolled or Cold-Rolled Mill Products: What to Choose

29/03/2020· Hot-rolled mill products are usually cheaper than the cold-rolled due to the fact that hot-rolled steel does not require re-heating (as in the case of cold rolling). Metal shrinks when cooling, so it is more difficult to predict the size and shape of the finished product than in the case of the cold-rolled

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Robust shape control in a sendzimir cold-rolling steel mill

01/12/1997· 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 hardness.

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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.

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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, household 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 system that can improve

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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

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60 YEARS OF ROLLING MILL TECHNOLOGY By Ford B. Cauffiel

As a rule of thumb, the more carbon content in the steel, that harder it is prior to any cold reduction in a rolling mill. Some low carbon steel is galvanized (coated with zinc). There are various types of galvanized steel that all have various amounts or weights of galvanized coatings that protect the base metal from corrosion.

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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, household 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 system that can improve

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Automation for Shape Control in Stainless Cold Rolling Mill

01/11/2000· The shape of cold strip for the stainless process has been become issue in quality recently, and hence POSCO developed an automatic control system for

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Rolling Mill Shape Control Control System Design

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. Much of this energy appears as heat on the work roll, which is removed with

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Research and Development Trend of Shape Control for

The shape standard curve of the first stand of a tandem cold rolling mill was established by Bai, et al. [ 35] to control strip edge drop and keep the rolling process stable. The established curve compensates for the influence of the strip temperature transverse distribution, increases the bending force, and reduces the strip edge drop.

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Flatness Control System of Cold Rolling Process with

Flatness control in rolling processes is widely used for steel and nonferrous metals, such as aluminum and copper. We developed a shape roll by applying the principle of pneumatic bearing and supplied the first flatness control system (hereinafter called IHI Sheetflat) to an aluminum cold rolling mill in 1985.(1)

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Cold Rolled Steel from Big River Steel Big River Steel

Reducing our hot rolled coils through our continuous pickle line and in-line tandem cold mill (PLTCM) produces cold rolled steels ranging in thickness from .012” .100” and 36” 72” in width. Our investment in technology allows us to meet the tight tolerances and surface finishes customers demand in fully processed cold rolled steels. Our investment in the industry’s highest

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The Differences Between Hot and Cold Rolled Steel

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.

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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 experimental design techniques have been carried out. Work has been carried out on

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Hot and Cold Rolled Steel Explained MST Steel Corp

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.

More

60 YEARS OF ROLLING MILL TECHNOLOGY By Ford B. Cauffiel

As a rule of thumb, the more carbon content in the steel, that harder it is prior to any cold reduction in a rolling mill. Some low carbon steel is galvanized (coated with zinc). There are various types of galvanized steel that all have various amounts or weights of galvanized coatings that

More