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Golinske K.,Georgsmarienhutte GmbH | Schliephake H.,Georgsmarienhutte GmbH | Schwarz S.,Friedrich KOCKS GmbH and Co. KG
MPT Metallurgical Plant and Technology International | Year: 2013

Georgsmarienhutte GmbH has revamped and extended its 3-roll reducing & sizing block (RSB), originally commissioned in 2001. The mill revamping comprised among others the implementation of a size control system in connection with 3-roll stands adjustable under load. Thus the rolled tolerances and their reproducibility could be. improved. Additionally, the existing reducing & sizing block has been extended from five to six stand positions. Georgsmarienhütte GmbH is the first rolling mill worldwide to use this trend-setting technology. Source


Kawakami K.,Nippon Steel & Sumitomo Metal Corporation | Ammerling W.-J.,Friedrich KOCKS GmbH and Co. KG
SEAISI Quarterly (South East Asia Iron and Steel Institute) | Year: 2011

Sumitomo Metals Kokura (SMK) is manufacturing specialty steel mainly for the automotive industry in its integrated steel plant based on the blast furnace route. In order to meet recent market demands such as improving quality, reducing cost and securing flexible delivery SMK upgraded its bar mill by introducing the latest development of the 3-roll Reducing Et Sizing Block (RSB) technology. The RSB produces a maximum size of 120mm diameter whereas all products are rolled by adopting the "free-size" rolling method. The 3-roll RSB was manufactured by Friedrich Kocks and features the highest rigidity so far. It has been commissioned in August 2009. Design features and processes used in this 3-roll block are described in summary. As a result of the upgrading project, the tolerances along the complete bar length have been improved and so the best bar quality could be achieved. Furthermore, SMK has improved the mill utilization by quick stand changing with stand cars and adopting the "free-size" rolling of finely graded bar diameters from a minimum number of feeders out of the intermediate mill line. Moreover, the RSB with some other minor accompanying modifications was not only leading to a better bar quality but also, through various operational improvements, higher cost performance. Source


Feuerhack A.,TU Chemnitz | Binotsch C.,TU Chemnitz | Katzenberger J.,TU Chemnitz | Awiszus B.,TU Chemnitz | Potthoff H.,Friedrich KOCKS GmbH and Co. KG
Proceedings of the 10th International Conference on Technology of Plasticity, ICTP 2011 | Year: 2011

A finite element simulation model of the direct coupling of the KRM process with the stretch reducing rolling was developed to analyze and characterize the most important process parameters. Therefore, the stretch reducing rolling with six stands was modeled separately by taking advantage of symmetry effects and to calibrate this process. Afterwards, both process steps were modeled together in a three-dimensional simulation model to perform the analysis of the whole process chain. The simulated tubes were analyzed regarding the inner polygon formation and the wall thickness development during the rolling process as well as the influence of the KRM process on the stretch reducing rolling. © 2011 IBF (RWTH Aachen) & IUL (TU Dortmund). Source


Dewald O.,KOCKS Technik GmbH and Co. KG | Ullrich C.,KOCKS Technik GmbH and Co. KG | Kruse M.,Friedrich KOCKS GmbH and Co. KG
Iron and Steel Technology | Year: 2011

High quality, accuracy and speed are critical to a successful automation system. This work presents new automation technologies developed by KOCKS, along with an analysis of market trends and test results. Source


Boettger D.A.,Republic Steel | Filippini S.A.,Friedrich KOCKS GmbH and Co. KG | Jurgen Ammerling W.,Friedrich KOCKS GmbH and Co. KG
Iron and Steel Technology | Year: 2013

A reducing and sizing block was installed at Republic Steel in an effort to modernize the facility. This work describes the need for the upgrade, provides details on the modernization process and presents the results of the project. Source

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