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Siemens Puts Continuous Slab Casters into Operation at Zhangjiagang
12/23/2009 - Siemens VAI Metals Technologies has put into operation four continuous slab casters comprising a total of seven strands within four weeks at Chinese steel producer Zhangjiagang Rong Sheng Co. Ltd.
Siemens VAI Metals Technologies put into operation four continuous slab casters comprising a total of seven strands within four weeks at Chinese steel producer Zhangjiagang Rong Sheng Co. Ltd.
Siemens VAI provided engineering for the mechanical, electrical, and media equipment and systems for the three identical CCM4, CCM5, and CCM6 two-strand casters and the CCM7 single-strand, thick-slab caster.
The scope of supply included key technologies such as mold oscillators for flexible adjustment of the mold-oscillation parameters, automatic breakout-prediction based on strand-shell friction monitoring, online slab-width adjustments, DynaGap Soft Reduction technology, and the Dynacs secondary cooling model. The project also covered Level 1 and Level 2 automation, as well as advisory services for plant installation and commissioning.
The CCM4, CCM5, and CCM6 casters have a casting radius of 8 meters and a metallurgical length of 30 meters. Each machine is capable of casting 1.9 million tonnes of slabs per year with a thickness of 170 or 200 mm and in widths ranging from 850 to 1600 mm. All standard carbon steel grades can be cast, as well as micro-alloyed, peritectic, high-strength low-alloy (HSLA), line-pipe grades, and silicon steels.
The CCM7 thick-slab caster, with a casting radius of 10 meters, is designed to produce 2 million tonnes of slabs per year in thicknesses of 220, 250, and 320 mm and in widths ranging from 1500 to 2300 mm. Medium- and high-carbon, micro-alloyed, peritectic, HSLA, and line-pipe steel grades can be cast.
Siemens VAI received the four caster orders in July 2007.
Zhangjiagang Rong Sheng Co. Ltd., a subsidiary company of the Jiangsu Shagang Group, produces approximately 23 million tonnes of crude steel per year. It is the largest privately owned steelmaker in China and the country's leading producer of electrical steel. During the past years, the Zhangjiagang plant in Jiangsu Province has been continually expanded to increase capacity. Siemens VAI had previously supplied the Continuous Casters Nos. 1, 2, and 3. A total of twelve strands, including those of the new casting facilities, were installed by Siemens in Zhangjiagang. These have a total casting capacity of 9 million tonnes of crude steel per year.
The Siemens Industry Sector, Erlangen, Germany, is a leading international supplier of production, transportation, building and lighting technologies. The sector comprises six divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility, and Osram. With around 207,000 employees worldwide, Siemens Industry achieved in fiscal year 2009 total sales of approximately €35 billion.
The Siemens Industry Solutions Division 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 31,000 employees worldwide, Siemens Industry Solutions posted sales of €6.8 billion in fiscal year 2009.
