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Siemens to Modernize Drives for Salzgitter Flachstahl Hot Rolling Mill
10/23/2007 - Salzgitter Flachstahl awards a contract to the Siemens Industrial Solutions and Services Group to supply new main drives and the associated automatic control technology for the company’s hot strip mill, with installation scheduled to take place in five stages.
Salzgitter Flachstahl GmbH has awarded a contract to the Siemens Industrial Solutions and Services Group (I&S) to supply new main drives and the associated automatic control technology for the company’s hot strip mill. The order is valued at approximately 29 million euros.
On its hot strip rolling mill, Salzgitter Flachstahl produces from standard low carbon to high-strength grades, carbon steels up to C75 and pipe steels up to X75. The thickness of the hot strip ranges from 1.23 to 25 mm at widths of 900 to 1880 mm.
In the course of the project, Siemens will replace the seven-stand finishing line’s existing main (DC) drives, stage by stage, with AC drives. The new cylindrical-rotor synchronous motors will be fed via Sinamics 150 DC-link converters with a total output of about 100 mW. The motors will be manufactured at Siemens AG’s Dynamowerk Berlin.
To keep disruptions to ongoing production to a minimum, the conversion will be carried out in a total of five stages beginning in spring 2009. Motor layout was designed around the existing foundations, thus avoiding costly construction work. Installation will be taken care of by the Siemens Regional Co. in Hannover, Germany.
Salzgitter Flachstahl is the largest steel subsidiary in the Salzgitter Group. In 2006, almost 4,500 employees produced about 4.6 million tons of steel. The most important customers of the flat products are the steel trade, automobile manufacturers and their suppliers, cold rolling mills, tube and large pipe manufacturers and the construction industry.
Metals Technologies (MT), a Division of the Siemens Industrial Solutions and Services Group (I&S), is one of the world’s leading engineering and plant-building companies for the iron and steel industry as well as for the flat-rolling sector of the aluminum industry and for open-cast mining. MT, which was created from the integration of Voest-Alpine Industrieanlagenbau, Linz, Austria, and the electrical engineering product business and automation solutions of Siemens, provides a comprehensive range of supplies and services for all related technological processes and integrated automation solutions for the entire life-cycle of metallurgical plants.
The Siemens Industrial Solutions and Services Group (I&S) is the integrator of systems and solutions for industrial and infrastructure facilities and global service provider for the plant and projects business covering planning, installation, operation and the entire life cycle. I&S uses its own products and systems and process technologies in order to enhance productivity and improve competitiveness of companies in the sectors of metallurgy, water treatment, pulp and paper, oil and gas, marine engineering, open-cast mining, airport logistics, postal automation, intelligent traffic systems and industrial services. In fiscal 2006 (to September 30) I&S employed a total of 36,200 people worldwide and achieved total sales of EUR 8.819 billion, according to U.S. GAAP.
