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Siemens to Upgrade Main Drives for ArcelorMittal Hot Mills in Dunkirk, Ghent
05/24/2012 - Siemens will replace the existing DC main drives in the finishing mills of ArcelorMittal’s plants in Dunkirk, France, and Ghent, Belgium, with more powerful AC systems. The first conversion work is planned for late 2012.
Siemens will replace the existing DC main drives in the finishing mills of ArcelorMittal’s plants in Dunkirk, France, and Ghent, Belgium, with more powerful AC systems. The two projects are part of modernization plans to boost productivity and reduce costs, within the scope of which the two hot rolling mills are also to be modernized for the processing of steel grades that require more sophisticated production technology.
The drives will be modernized in several stages during scheduled annual maintenance stoppages, and completion is expected by the end of 2016. The first conversion work is planned for late 2012 and subsequently on a yearly base.
In the finishing mills of the two hot rolling mills, a total of 13 stands are to be modernized. Siemens will supply the motors, converters, and transformers for this, and will handle installation supervision, commissioning, and customer training. The same Sinamics SM150-based converter technology will be used in both plants. In Dunkirk, each stand has three DC machines in series. Siemens had to design a single AC motor with a higher total power but with outer dimensions that allow the motor to fit on the same foundation as a single DC machine. The solution is 12-megawatt machines.
The finishing line in Ghent has a 14-megawatt pedestal bearing machine to meet higher requirements regarding achievable rolling torques. The modernization projects will be carried out jointly by the Siemens Competence Center for electrical and automation engineering in the steel industry in Erlangen, and Siemens Belgium.
The integrated production complexes of ArcelorMittal Atlantique in Dunkirk, and ArcelorMittal in Ghent, belong to the Flat Carbon Europe Division. The Dunkirk site has an annual capacity of 4.7 million tonnes of hot strip. Siemens will modernize the drives of seven finishing stands in a total of four steps. Initial work on one of the mill stands is planned for December 2012.
ArcelorMittal Ghent has a wide hot-strip mill and produces around 5 million tonnes of flat steel a year for applications in the automobile industry and domestic appliance industries, for example. In Ghent, a total of six finishing stands will be modernized in three stages, the first in December 2012 within 12 days shutdown time.
The Siemens Industry Sector (Erlangen, Germany) is a leading supplier with end-to-end automation technology and industrial software, solid vertical-market expertise, and technology-based services. With a global workforce of more than 100,000 employees, the Industry Sector comprises the Divisions Industry Automation, Drive Technologies and Customer Services as well as the Business Unit Metals Technologies.
The Metals Technologies Business Unit (Linz, Austria), part of the Siemens Industry Sector, is one of the world’s leading life-cycle partners for the metallurgical industry. The business unit offers a comprehensive technology, modernization, product and service portfolio as well as integrated automation and environmental solutions covering the entire life cycle of plants.
