plate Rolling mill production Cherepovets tube rolling
metallurgical plant in cooperation with "Severstal digital" implemented the solution
based on machine learning models that automatically adjusts the speed
rolling of slabs on the mill 5000.
the specialists of rolling shop operated rolling speed, slab
by manually adjusting the speed indicators with the help of rheostat. In this case, the operator
the mill had to manage a unit and to follow the passage
and quality metal to avoid defects. When determining rolling speed is not
always consider the mix of products and the cyclical nature of the rental, so
the indicators could be understated and the mill was not working at full capacity.
To improve performance of mill 5000 it was decided to
the basis of machine learning algorithms. Speed control is accomplished with the
subject to the regime of the rent generated in the tracking system for the metal, the length and
the width of the sheet, the roll gap, steel grade, temperature and other
settings. The model comprehensively assesses these indicators in the online mode and specifies
the optimal rate of rentals in a particular cycle. The state of the metal.
is monitored regularly and the settings in each pass of the metal
adjusted. As a result, the maximum speed of the rolling
increasing from 3.2 m/s set by the operator, up to 4.5 m/s,
installed machine. As a consequence, increases the number of laminated
slabs. The expected increase of mill capacity is from 6% to 9%
depending on the rolled product range. Also, now the mill operator
to focus on the visual evaluation of the metal.
"With the implementation of digital initiatives at production sites we
strive to increase the number of decisions taken by officers based
data and statistics in order to reduce the risk of errors and maximize
the effectiveness of our equipment and business processes. This approach is consistent with
the strategic priority "cost Leadership". In the future we plan to
extend the functionality of this solution. For example, on the basis of available data to manage.
not only speed, but also load of the mill, and faster cause the slabs from the furnace,
to reduce pauses between rollings", - said the head of the Centre
technological development of manufacturing tubular steel products Alexander Willst.
