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                                                                                                                                         Achieva Flatness Control.gif (3712 bytes)

Achieva Flatness Control Inline.gif (2842 bytes) can be supplied in isolation or as part of Achieva Mill Automation Inline.gif (2627 bytes) system.  Sophisticated model based algorithms control strip shape by adjustments to mill level, roll bending, roll force, spray distribution and spray pressure actuators. Predictions of roll bending and work roll side-shift reference settings take into account roll stack deflections and ground and thermal roll camber.

Achieva Flatness Control Inline.gif (2842 bytes) has a number of features which distinguish it from other commercially available systems:

template_orange.gif (809 bytes) Actuator setup references for each coil are calculated with models and take into account conditions observed on previous coils by the application of adaptive learning algorithms.

template_orange.gif (809 bytes) Temperature compension:  Measured temperatures or product dependent temperature profile models are used to compensate for thermal expansions across the strip width.

template_orange.gif (809 bytes) The dynamic responses for all actuators are monitored continuously to detect any malfunction.

template_orange.gif (809 bytes) Feed-forward compensation for force fluctuations by roll bending adjustment

template_orange.gif (809 bytes) The spray control algorithm uses pulsed sprays to deliver appropriate lubrication of all zones to prevent friction marks, avoids excessive pressure variations and optimises switching to increase valve life.

For more information please contact us.

RESEARCH PAPERS - Hatch IAS engineers are well known presenters of technical papers internationally. Abstracts may be read online.

Hatch IAS

71 York Street (Post Office Box 3100) Teralba, NSW, 2284, Australia
Tel: +61 (2) 4965 8688 ~ Fax: +61 (2) 4965 8633 ~ hatchias_info@hatch.ca

7000 Industrial Boulevard, Aliquippa PA 15001, USA
Tel: +1 724 375 5500 ~ Fax: +1 724 375 7700 ~ info@indauto.com