SIROLLCIS CM Solutions for cold rolling mills - Industry - Siemens

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Tandem cold mills Competence for your success Principle design of a tandem cold mill From batch to continuous mode Production capacities of tandem cold mills using coil to coil operation are typically in the range of 600,000 to 800,000 tons per year. Today many of the existing batch mills are extended and modernized to continuous mode operation and new mills are installed for continuous operation from the very beginning. Depending on the product mix, production capacity of these continuous mills can than reach 1.2 m tons per year or even more, and many of the quality parameters can even be improved. 8 4-high and 6-high technology Our technological and process automation experience in 6-high and 4-high technology makes Siemens VAI a unique partner for your cold mill. Our goal with SIROLL CIS CM is to deliver a solution that offers maximum added value for your production. Advanced mill stand actuators will bring the benefits of improved yield, user-friendly mill operation and high strip quality. Both 4-high and 6-high solution bring specific benefits, and our analysis of the customer’s overall requirements will define the best suitable technological solution. Our approach has been rewarded, for example, by top steel producers voestalpine Stahl (5-stand, 4-high, SIROLL CIS Smartcrown®) and CORUS Staal (4-stand, 6-high), which have selected us to supply the latest tandem mills in Europe. Both companies are dedicated to producing AHSS (advanced high-strength steel grades). Technical features: CIS SIROLL Smartcrown contour roll associated with axial roll-shifting for enhanced flatness control 4-high and 6-high mill stands for high mill flexibility for all products Morgoil® bearings or roller bearings depending on application Physical-based analytical online models supported by neural networks ensure accurate mill setup to achieve tight tolerances right from the start Flexible thread-in and thread-out strategies for all kinds of materials, such as high-strength steel grades Patented compensation systems for correcting periodic roll and coil eccentricities Use of last stand in temper mode for smoothing or roughing strip surface Fully automatic operation allows operators to concentrate on product quality; actual operator intervention is reduced to an absolute minimum
voestalpine Stahl, Linz, Austria Tangshan Iron & Steel, Tangshan, China Nonstop production possible for any existing tandem mill In recent years, the most newly installed tandem cold mills have been continuous operation mills, which indicate that this type has displaced the traditional batch mill. The reason is clear: the productivity of a continuous mill is significantly higher (up 40%) than a batch mill. One significant factor in this improvement was the development of laser welders. The weld seam produced by these laser welders and the modern control techniques allow minimum loss of time and material. As a result, later conversion of a batch mill into a continuous mill is a typical market trend of the early decade of this century. Generally, any existing non-continuous tandem mill of any line layout can be converted into a continuously operating mill with the use of suitable strip turning units, the right equipment and careful arrangement of all mill and logistical facilities. Additions for continuous operation Siemens VAI offers the following equipment for the continuous operation of your mill: Welders (flash butt and laser welders) Accumulators (2-, 4-, or 6-strand) at one or two levels Scale breakers Side trimmers Bridles for decoupling the tension of the different line sections Exit sections with flying shear and 2 reels or carrousel coiler depending on the strip thickness Main benefits: High production rates Optimized yield Reduced roll consumption Flexible production Tight tolerances for strip thickness, shape and high surface quality Low costs for operation, maintenance and minimum down times Selected references: voestalpine Stahl, Linz, Austria Salzgitter Flachstahl, Salzgitter, Germany ArcelorMittal, Bremen, Germany Essar, Hazira, India SSAB, Oxelösund, Sweden P.T. Krakatau Steel, Cilegon, Indonesia ArcelorMittal, Sagunto, Spain ArcelorMittal, Ferblatil, Belgium ArcelorMittal, La Magona, Piombino, Italy 9
Page 1 and 2: SIROLL CIS CM Solutions for cold ro
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SIROLLCIS CM Solutions for cold rolling mills - Industry - Siemens

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