Www.redex-group.com group REDEX Group Great achievements start with us.

www.redex-group.com www.tension-leveling.comREDEX group

REDEX Group

Great achievements start with us


Builder of

Tension Leveling LinesFor

Flatness & Cleanliness Improvement

Leading Supplier in Strip Processing Equipment

REDEX Group


Since its inception, 64 years ago, REDEX

still independant family owned company

still managed by engineers with

still the same target in mind:

To be one of the few worldwide key actors in some specialties

by relying on

> Top quality and performance products

> Long term development.

> Mechatronics for Machine-tools

> Differential drives

> High-tech planetary gearheads

> High precision right-angle gearboxes

> Electromagnetic clutches


Power transmissioncomponents & systems


> Tension Leveling

> Finishing lines

> Precision cold rolling mill for narrow strip and wire

> Backing assemblies for Sendzimir mills

Machinery for Strip Industry

… relying on 320 high skilled employees worldwide

> with more than one third being graduate engineers and technicians.> with Engineers coming from France, UK, Spain, Germany, Italia, America, China, India…, (Head office and subsidiaries)


REDEX : an independent group …

> 3 production plants in Europe, 2 in France and 1 in Germany (20 000 m² including more than 100 CNC machine-tools)> 3 service centers (USA, France, China)> 8 subsidiaries : England, Italy, Spain, Germany (2),USA, China, India

.


REDEX : an European group working worldwide

REDEX achieves an average consolidated turnover up to 65 M$ per year

REDEX delivers its equipments to more than 50 countries> 40% of the production sold within Europe, moreover France.> 50 % out of Europe.

REDEX technological leadership results in several new patents every year.

REDEX high capacity of engineering and production relies on a high demanding and constant investment policy:

More than 20 M€ have been invested during the 5 past years in modern machine-tools (i.e CNC multi axis, robots, etc.), organisation and logistic means

> to guarantee oversized available capacities > to comply instantaneously with any customer demand


REDEX : an European group working worldwide


REDEX and Strip Tension Leveling :… quite a very long story

> From 1949 to 1968:

REDEX differentials were used in Strip processing and in Tension Leveling equipments. Major builders of the strip industry started to integrate REDEX technology to all their machines.

> Major builders such as CMI, Fata Hunter, Davy Mc Kee, ADS, Wean Damiron, Bronx…

Elongation Controlby Differential


REDEX and Strip Tension Leveling :… quite a very long story

REDEX is now offering more than 45 years of background / experience in Tension Leveling

> Since 1968 till today

REDEX is now offering a complete range of Tension Leveling equipments based on REDEX differential elongation bridle roll drives and a complete range of Levelers.


Exclusive High performances multiroll leveler

> Multiroll Leveler technology allows to process a very wide range of strip strength and thickness with automatic reliable settings

> Multiroll Leveler technology procures perfect flatness performances (0 to 2 IU) and perfect surface.


References

Hundreds of References in the world

Tension leveling section in process lineTension leveling section in process line


References

REDEX Tension leveling Lines

More than 200 lines in the world

REDEX Tension leveling Lines

More than 200 lines in the world

> Focus on high flatness improvement 0 to 2 IU

> Focus on surface aspect and cleanliness

> Focus on long term reliable service to customer


REDEX in the ALUMINIUM INDUSTRY

2005 : upgrade of the 2300 mm width existing line.

2007 : One complete TLL for the TUZLA plant> Width 1800mm thickness 0.15 mm to 1.5mm> 200 m/min.

2009 : One complete TLL for the DILOVASI plant> width 1800mm thickness 0.3 mm to 3.2mm> 200 m/min.

ASSAN Aluminum Wide Strip

ASSAN Aluminum is a world leader in wide Aluminium Strip technology.

2011 : GARMCO awarded REDEX for the supply of a turn key Tension Leveling Line

2012 : since December, GARMCO is successfully operating its new REDEX TLL, which ensures perfect flatness (0 to 2 IU) and cleanliness (…….)

> thickness from 0.25mm to 3.2mm> 300m/min.


GARMCO, Kingdom of Bahrain

REDEX in the ALUMINIUM INDUSTRY



REFLAT, is a Contactless flatness measurement based on the stereoscopic measure of laser light beams realized by two digital CCD cameras . One laser source scanning the strip width, 1 ray each 50 mm.

REFLAT features :> a free strip tension distribution (no friction distortion)> a sensor response independent from the tension (no limit of the strip tension) > an extremely accurate measure in static, or dynamic mode > low operation & maintenance cost with a robust wiring

REFLAT : the brand new conceptby REDEX


REFLAT is not subject to disturbances such as :> the torsionnal stiffness (shapemeter)> the variation of the pre set load of the sensors> the Data conversion & transfer

The calculator receives in real time the measures. The strip tensions are translated to length differences thanks to an algorithm of triangulation linearization based on the Hooke’s law that gives results independent from the absolute tension level.

These measures processed through REDEX exclusive software allows the leveler crown settings

REFLAT, AN EXCLUSIVE DEVELOPMENT FOR UP- and DOWNSTREAM FLATNESS CONTROL



REDEX Technology guarantees a perfect strip flatness all along the coil length > i.e. 99.7 % (3) from 0 to 2 IU from the combination of the REDEX exclusive technologies :> mechanical differential elongation control> multiroll leveler> memorized Recipes

REFLAT : WHAT IS THE ROLE OF REFLAT?

REFLAT acts as a double security (as the airbags in a very safe car) and :> offers the reduction of the scrap thanks to a predictive adjustment of the leveler crown> allows to contain the operators’ deviations from the recipes in specific cases ( recipes download mistakes, excess of zeal, ….)> provides flatness quality reports


The interactions of the crown wedges are non linear and the REDEX control models the interaction system between each actuator and the shape induced changes. For each actuator and according to the strip width an interaction function is defined from the observer controller. The controller acquires the information of the flatness measurement and the position of the crown

REFLAT, AN EXCLUSIVE DEVELOPMENT FOR UP- and DOWNSTREAM FLATNESS CONTROL




With the discretization of the functions of each actuator and boundary simplification such as the limitation of the difference between two wedges adjustment, the controller generates the matrix of the interaction function of Actuators.This strategy of setting the crown adjustment by discretization of the interaction function is so as similar as the logical manual adjustment.

REFLAT , PRINCIPLEof AUTOMATIC FLATNESS CONTROLFLATNESS CONTROL


THANK YOU FOR YOUR ATTENTION !

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