Siemens Metals Technologies has received an order from Dongkuk Steel Mill Co. Ltd. to supply the entire mechanical equipment and automation system for a new 5 meter wide plate mill. The plant, where plates with a width of up to 4.9 meters can be rolled, will be built at the company’s Dangjin works.
Production of the first plate is scheduled for the end of 2009. Siemens is part of a consortium for the project, that is led by Sojitz Corporation, Japan and also includes Hyundai Heavy Industries, Korea.
Dongkuk Steel Mill Co. Ltd. (Dongkuk) is a leading steel producer in Korea. In the past Dongkuk and Siemens have completed a series of projects together, with Siemens supplying and modernising Dongkuk’s plate production facilities and increasing their capacity. The new mill’s scheduled production capacity will be 1.5 million metric tons per annum, increasing Dongkuk’s total production capacity of plates for shipbuilding, pipe making and construction to 4 million metric tons per annum. At the new plant, it will be possible to roll plate with thicknesses of between 4.5 and 150 millimetres.
The mill comprises a 4-high stand equipped with long stroke hydraulic automatic gauge control capable of producing 11,000 tonnes of rolling force, work-roll shifting functions based on SmartCrown technology and heavy bending, a Mulpic intensive plate cooling section, a hot leveller, three cooling beds and a shearing line consisting of a crop shear, double side trim shear, slitting shear and divide shear.
In addition to the mechanical equipment, Siemens is also supplying the entire automation system, including sensors. The automation system comprises the basic automation, including all the technological control systems, as well as operation and visualization equipment and the process automation functions. Due to the close interaction of analytical process models and technological closed-loop control systems, all the process parameters are kept within close tolerance limits.
Functions such as plan view pattern control and thermo-mechanical rolling are also part of the Siemens solution. A rolling-sequence control system enables nested multi-plate rolling. This will enhance the productivity of the plant. This flexible system can be adapted to changes in the range of products or the quality requirements, thus safeguarding the original investment. A higher-level material-tracking system ensures the smooth flow of material and correct correlation of plates and process data at all times. All the components and systems used are part of “Siroll PM”, the integrated solution for plate mills. In addition, Siemens is responsible for commissioning and customer training.
With this project, Siemens will further consolidate its leading position as a supplier of mechanical, automation and electrical equipment for plate mills. Among the reasons for the contract being awarded to Siemens were the company's technological competence, the large number of references for plate mills, the comprehensive solution concept and the good experience of Dongkuk working with Siemens in preceding projects. -Siemens
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