The first step involved disassembling the 20-year-old tandem and skin-pass mills in Baltimore, Maryland in the United States and then shipping them to Italy for reassembly.
As project manager Nidec supervised most of this process.
The motors and drives in these mills still had many years of life left in them but needed to be refurbished and integrated into the plant in Italy. To minimize installation time and limit downtime Nidec refurbished the main motors for both mills at the company’s factory in Monfalcone while restoring the drives at the new mill site.
The new Level 1 automation systems installed by Nidec improved the technological controls (HGC, AGC, ATC, tracking and speed master functions), while the basic automation software on the programmable logic controllers was adapted to the new configuration of the plants for systems management, interlocks and sequencing. Nidec installed its proprietary ARTICS (Automation and Real Time Integrated Control System) Level 1 and Level 2 system control which uses “smart” auto-adaptive mathematical models for process setup to guarantee top quality performance.
Within four months of arriving in Trieste port, all the electrical equipment had been mounted, connected and recommissioned. The tandem mill began production one month later. The skin-pass mill, was also installed and commissioned. The finished project enables the steel mill to expand its production capabilities and product applications.