tension measurement ld rolling mill

Cold Rolling Mills - Strip Tension BLH Nobel

COLD ROLLING MILLS: STRIP TENSION. High consistency in rolling mill operation requires a high accuracy in tension measurement. The BLH Nobel strip tension systems for rolling mills measures the actual resultant strip tension force, as opposed to measuring the indirect force given by the electrical drives current, increasing measuring accuracy and reactivity.

LaserSpeed Controls Tension Leveler in Cold Rolling Mill ...

Dec 15, 2011  The LaserSpeed non-contact encoder by Beta LaserMike is being used by a steel manufacturer to accurately measure the length and speed of product to a control...

Dr. Brandt Rolling Mill Force Measurement

Strip Tension Measurement, Rolling Mill Force Measurement, Process Regulation. Aim: a continuous measurement of strip tension during production and finishing processes; processing of the measuring signal and transmission to the production process. Principle : strip tension is measured indirectly via the force applied on the roller bearings.

A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING

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 interest - also, 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

New Rolling Method R f Reversing Cold Rolling Mill

Outline of reversing cold rolling mill and rolling method 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).

Control of Strip Tension in a Rolling Mill Based on ...

tension meters (Zhao et al., 2008) to measure the current strip tension. Choi et al. (2007a) advocate the use of lin-ear model predictive control (MPC) for loopers and strip Strip Mill stand Looper Fig. 1. Tandem rolling mill with ve mill stands. tension as this control approach facilitates a systematic consideration of constraints and the ...

The regulator interstand strip tension for continuous cold ...

Continuous mnogoletija cold rolling mill strip (NSHP regulators mikeletegi tension stabilize communication stands with each other through the strip, reinforcing this merging them into a single rolling mill with VA stands for the result of measurement of the deviation from the set value of the tension bar to the cage, substituting this action on ...

MEASUREMENT ANALYTICS Profilglass SpA in Fano, Italy

ABB Force Measurement products in their four cold rolling mills plus tension leveling line Profilglass SpA’s four cold rolling mills plus the tension leveling line are running with 4 Stressometer systems, 6 MTG-gauges, 3 Strip Scanner systems and 8 tension load cells. Measurement made easy Background In 1982 the Paci brothers founded Profilglass

Cold Rolling - an 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].

Basics of Web Tension Control Summary - TAPPI

Open loop does not have tension measurement • Ultrasonic control is the easiest to install and set up It’s easy and it works! Open Loop Systems Summary • Does not compensate for tension errors due to non-linearity of device being controlled (i.e. brake, clutch, motor etc. No feedback. Closed Loop Systems Feedback Output

Dr. Brandt Rolling Mill Force Measurement

Strip Tension Measurement, Rolling Mill Force Measurement, Process Regulation. Aim: a continuous measurement of strip tension during production and finishing processes; processing of the measuring signal and transmission to the production process. Principle : strip tension is measured indirectly via the force applied on the roller bearings.

Strip flatness measurement on cold rolling mill with TiZn ...

Metal strip flatness measurement system - Sectional strip tension meter - Shapemeter roll - Shape-roll - on TiZn strip - see uvbtechnik.cz/en/stm

6 High Reversible Cold Rolling Mill - SlideShare

Feb 10, 2012  When cold rolling, sufficient tension forces areapplied to make the sheet appear to be optically flat. Tension distribution is usuallyused as a means of obtaining a measurement of strip shape. The tension distribution is measured using some form of

Control of Strip Tension in a Rolling Mill Based on ...

tension meters (Zhao et al., 2008) to measure the current strip tension. Choi et al. (2007a) advocate the use of lin-ear model predictive control (MPC) for loopers and strip Strip Mill stand Looper Fig. 1. Tandem rolling mill with ve mill stands. tension as this control approach facilitates a systematic consideration of constraints and the ...

Tension and Thickness Control Strategy Analysis of Two ...

Finally, simulation research is carried out on the speed and tension system of a 1422 mm reversible cold strip rolling mill; results show that using

The regulator interstand strip tension for continuous cold ...

Continuous mnogoletija cold rolling mill strip (NSHP regulators mikeletegi tension stabilize communication stands with each other through the strip, reinforcing this merging them into a single rolling mill with VA stands for the result of measurement of the deviation from the set value of the tension bar to the cage, substituting this action on ...

Single-stand cold mills (Aluminum) SMS group

Single-stand cold rolling mills from SMS group are the top solution for producing a broad spectrum of aluminum alloys in different dimensions. What makes them stand out is their absolute reliability and huge versatility. Available in 4-high or 6-high design, they feature state-of-the-art rolling technologies.

Homepage kelk

Founded in 1953, KELK is an ISO 9001:2015 certified organization, specializes in the design and manufacture of state-of-the-art electronic measurement equipment used mainly in steel and aluminum rolling mills, paper mills, and mining applications around the world.

1. Hot rolling and rolling defects: 1.1 Front and back ...

Reducing the roll gap increases the roll pressure to p3. Gage control in multiple rolling mills is achieved through measurement of strip thickness using x-ray gage and adjusting the strip tension using feedback control system. 1.8 Rolling defects: Mill spring is a defect in which the rolled sheet is thicker than the required thickness because,

RollingAluminum: FromtheMine ThroughtheMill

AdvantagesofAluminum Thepropertiesofaluminummakeitoneofthe mostadvantageousandversatilematerialsin usetoday.Aluminumis: Lightweight—Aluminumanditsalloys weigh ...

(PDF) Flatness Defect in Thin Strip Cold Rolling and the ...

On the rolling mill, a high tension stress is ... based flatness measurement strategy a reality in routine production line, an area scan charge coupled

Everything you need to know about flatteners and levelers ...

The hot mill's strategy is to get the relationship between crown and shape correct so that they will both come out right in cold rolling. If that sounds difficult, it is! The tension on the coil strand through the mill also affects the thickness reduction at the mill roll.

Adjusting Rolling Speed and Thickness to Help Ensure Metal ...

Larger changes can be compensated by the hydraulic cylinders in the mill stand, which can react in a matter of milliseconds. X-ray gauges are the optimal thickness gauge technology to provide the speed and accuracy required to operate a cold rolling mill. X-ray based sensor systems provide extremely accurate high speed/low noise measurements ...

Robust Tension Control of Strip for 5-Stand Tandem Cold Mills

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.

Robust Tension Control of Strip for 5-Stand Tandem Cold Mills

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.

Cold Rolling Mill Automation System – Detailed Case Study ...

Cold Rolling Mill Automation System - Detailed Case Study ... (UPS). Each of these systems hosts gauge, tension and flatness controls, mill setup and model adaption, x-ray gauge setup interfaces, mill stand sequencing, process quality/performance monitoring, and HMI display functions. ... the flatness measurement scans collected through the ...

6 High Reversible Cold Rolling Mill - SlideShare

Feb 10, 2012  When cold rolling, sufficient tension forces areapplied to make the sheet appear to be optically flat. Tension distribution is usuallyused as a means of obtaining a measurement of strip shape. The tension distribution is measured using some form of sensing roll, overwhich the strip wraps.

The regulator interstand strip tension for continuous cold ...

Continuous mnogoletija cold rolling mill strip (NSHP regulators mikeletegi tension stabilize communication stands with each other through the strip, reinforcing this merging them into a single rolling mill with VA stands for the result of measurement of the deviation from the set value of the tension bar to the cage, substituting this action on ...

What is the Definition of the Type of Cold Rolling Mill ...

High-tension cold rolling mill can prevent the phenomenon of deviation from the workpiece, and at the same time it has the function of adjusting automatically so that the rolling plate can be flat and reduce the rolling pressure to avoid deformation, so as to improve the production efficiency and improve the working work the amount.

Tension and Thickness Control Strategy Analysis of Two ...

Finally, simulation research is carried out on the speed and tension system of a 1422 mm reversible cold strip rolling mill; results show that using the proposed control strategy increased the ...

Automatic Roll Mark Detector Improves Cold Rolling Mill ...

The Measurement Cycle — The system runs a repeating measurement cycle to inspect every coil. To start a measurement cycle, the roll mark system checks the value of two signals, strip tension signal and mill ready signal. Only when both signals are equal to 1 will the system start the measurement cycle. On the other

Measurements of Surface Roughness in Cold Metal Rolling

Cold-rolled 5052 work-hardened aluminium strips of thickness. 0.82 mm, length 200 mm and width 50 mm were rolled at roll speeds between 0.003 and 1.0 m/s in a two-high mill with roll

Adjusting Rolling Speed and Thickness to Help Ensure Metal ...

Larger changes can be compensated by the hydraulic cylinders in the mill stand, which can react in a matter of milliseconds. X-ray gauges are the optimal thickness gauge technology to provide the speed and accuracy required to operate a cold rolling mill. X-ray based sensor systems provide extremely accurate high speed/low noise measurements ...

RollingAluminum: FromtheMine ThroughtheMill

AdvantagesofAluminum Thepropertiesofaluminummakeitoneofthe mostadvantageousandversatilematerialsin usetoday.Aluminumis: Lightweight—Aluminumanditsalloys weigh ...

The calculation of rolling force - Innoval Technology ...

Tension. The tension applied to the strip also influences the rolling pressures developed within the bite. Higher entry tension lowers the starting point on the friction hill and so needs to be taken into account in the rolling model. Further learning. In summary, the calculation of rolling force is a complex and multi-disciplinary calculation.

Analysis of the Effect of Tension at the Entry of Cold ...

tion of rolling, known as strip track-off, is a serious opera-tional problem that can lead to mill crashes and damaged rolls. It predominately occurs at the entry of the tandem cold mill, where the entry tension is relatively low. Operational experience suggests that the strip tracking problem could be reduced if the tension applied to the strip

THE MECHANICS OF TENSION CONTROL

• Another crude but very effective way to measure tension in the unwind zone is the “fish scale method”. This method works for the unwind zone only. It can only be utilized if there is a brake on the unwind station. Unwrap a small amount of material off the unwind

Tension and Thickness Control Strategy Analysis of Two ...

In order to lucubrate the rolling characteristic of the two stands reversible cold rolling mill and establish the tension and thickness control strategy, the steady-state characteristic simulating program was established using the steady-state continuous rolling theory. The influences of each factor on exit thickness under different tension control methods were analyzed.