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Siemens VAI to Modernize Hot-Rolling Mill at Hoesch Hohenlimburg
07/18/2011 - Siemens received a contract from Hoesch Hohenlimburg GmbH to modernize the medium-wide-strip hot-rolling mill at the company's Hagen location. The project is scheduled for completion by mid-January 2013.
Siemens received a contract from steel strip producer Hoesch Hohenlimburg GmbH, a subsidiary of ThyssenKrupp Steel Europe AG, to modernize the medium-wide-strip hot-rolling mill at the company's Hagen location. For the project, which is scheduled for completion by mid-January 2013, five rolling stands will be completely replaced and two additional stands will be revamped in the finishing mill.
The rolling mill modernization will be carried out in two phases during scheduled mill downtimes. Modernization of two of the operating rolling stands and installation of two new stands is scheduled for the summer of 2012. Installation of the remaining three new rolling stands is anticipated by December 2012. The order volume exceeds 20 million euros.
The finishing mill is comprised of nine rolling stands, seven of which are 4-high stands. All of the stands are being equipped with work-roll shifting devices for the installation of SmartCrown® rolls and L-type bending blocks, which allows improved control of strip profile and flatness parameters. Long-stroke cylinders for automatic thickness regulation (hydraulic automatic gauge control/HAGC), cooling systems, and position transducers are also being installed in the bending blocks. Backup roll exchanges will be carried out after the revamp by means of hydraulic extraction of the backup rolls. The automation system, also currently being completely modernized by Siemens, will be adapted during the course of the project to the new rolling mill configuration.
The automation systems in the roughing and finishing lines will be modernized on the basis of the Siroll HM platform specially developed for hot-rolling mills. Siemens previously modernized a downcoiler and the cooling line in the medium-strip rolling mill.
Once the entire project has been completed, the rolling mill will have an annual capacity of 1.35 million tonnes of medium-wide strip with thicknesses ranging between 150 and 720 mm. The achievable strip thicknesses range between 1.3 and 16 mm with coil weights of up to 15 tonnes. The modernized mill will enable Hoesch Hohenlimburg to expand its product spectrum to include new high-strength steel grades.
The Siemens Industry Sector (Erlangen, Germany) is a leading international supplier of environmentally friendly production, transportation, building and lighting technologies. The Sector comprises six divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility and Osram. With around 204,000 employees worldwide (September 30), Siemens Industry achieved total sales of approximately €34.9 billion in fiscal year 2010.
The Siemens Industry Solutions Division (Erlangen, Germany) is one of the world's leading solution and service providers for industrial and infrastructure facilities comprising the business activities of Siemens VAI Metals Technologies, Water Technologies and Industrial Technologies. Activities include engineering and installation, operation and service for the entire life cycle. With around 29,000 employees worldwide (September 30), Siemens Industry Solutions posted sales of €6.0 billion in fiscal year 2010.
