stahl und eisen 01-02/2020 Leseprobe

Grain-size-controlled grades can ensure high stress
ratios and Agt values thanks to a dedicated controlled
temperature rolling strategy. With the UFG process
it is possible to obtain a grain-size definition from
to 1 m, which makes it possible to have a material
with higher ductility because the lower grain-size
prevents any potential crack from propagating.
Energy Savings & Environmental
Sustainability
The current production process of structural steel
for construction purposes is going to be drastically
changed, as is already happening in the USA, as well
as in most countries like hina that are becoming
increasingly aware of the environmental impact and
starting to minimize 2
emissions and preserve
natural resources. In this regard, hina is progressively
replacing the existing blast furnaces with the
lower-polluting EAFs, avoiding the use of RHF for
billet reheating from ambient temperature to more
than 11 before entering the rolling mill.
The complete absence of RHF in our ER process
avoids a huge waste of energy and gives net savings
in terms of NG consumption of about 30 Nm3/ton,
euivalent to approximately kWhton which
corresponds to a reduction in 2
emissions on the
order of 100 kg/t.
Twin MI.DA. plants can generate a considerable
reduction of about 1, ton per year in 2
emissions, corresponding to 7, circulating cars.
Industry 4.0
The ER process has been constantly supported through
the years by a strategy that aims to guarantee
performance in terms of apEx and pEx, thanks
also to the wide application of digital technologies
with the aim of transforming conventional plants
into Smart Plants. A Smart Plant constitutes a safe,
exible, efficient and environmentally friendly manufacturing
concept based on the extensive digitalization
of processes, full integration of cybernetics
and strong interconnection between humans and
intelligent artificial systems. Increased automation
complexity reuires a different approach to assist
operators in realizing the full potential of a Smart
Plant.
In this regard, the Digital Pulpit provides a
full “soft-desk”, totally based on computer screens
through which the operator can both monitor the
plant and operate it, in an ergonomical and user-friendly
approach.
Summary
The MI.DA. plant size and configuration has evolved
continuously and steadily over the years. It has taken
just a few years for it to grow from its original size
of , tpy up to todays 1. Mtpy production
capacity through the development of the TWIN MI.
DA. configuration.
Advanced automation and digital solutions, fully
integrated and optimized into the MI.DA. ecosystem,
have led to a broad ow of information to support
operators in their decision making and to replace
them even in the most uncertain and dusty places.
This makes the MI.DA. concept, in combination with
the E..R. process, a proven and reliable technology
to meet the market demand for high efficiency
and energy savings in the production of reinforcing
steel long products, both straight and coiled coils,
including wire coils.
Figure 7:
MI.DA. productivity
development
Figure 6: 3Q Digital Pulpit
Contact / more information:
Andrea De Luca, Danieli
a.deluca@danieli.it
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