ADMOS - Pass Schedule Optimization and Flatness Precalculation

ADMOS - ADvanced Mill Optimization System is the name of the completely new development of pass schedule optimization and flatness precalculation within the level 2 automation system from ANDRITZ Metals Germany for cold rolling mills.

On the one hand, it was developed with the aim of calculating the rolling forces and torques and the occurring heating of the strip based on the latest complex technological models in order to determine the optimum pass schedule, and on the other hand, to ensures the best possible product quality by integrating a discretized model for flatness precalculation.

Models

As a basis for the calculation, models are used to calculate the

Yield Stress (temperature dependence is included)
Tension (complex mills with multiple reels and S Bridles can be easily created)
State-of-the-art models for roll force and moment calculation
- Analytic model for calculation of roll force and torque
- Elasto-plastic strip behavior for improved calculation results especially for foils
- Advanced Friction model for consideration of rolling speed
Strip / Roll Temperature Calculation
Preset Calculation with a Discretized model for each type of mill stand with support of the following flatness actuators
- Continuously Adjustable Crown (CAC)
- Taper Roll Shifting (TRS)
- Roll bending
Yield Stress Adaptation with consideration of
- Short term adaptation within the coil
- Long term adaptation over larger number of coils

Scope of services

ADMOS is available in various configurations provides the following functionalities (depending on the configuration)

Pass schedule calculation and optimization
Individual parameter sets for different products
Adaption of yield stress curves and friction values
Flatness precalculation for the entire pass schedules to improve the preset settings of the flatness actuators
Pre-calculations of pass schedules of new products