Hoesch Hohenlimburg GmbH

Hagen am Teuteburger Wald, Germany

Hoesch Hohenlimburg GmbH

Hagen am Teuteburger Wald, Germany
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Sartor M.,VDEh Betriebsforschungsinstitut GmbH | Orosz R.,VDEh Betriebsforschungsinstitut GmbH | Reichardt T.,VDEh Betriebsforschungsinstitut GmbH | Hansch W.,Hoesch Hohenlimburg GmbH
Stahl und Eisen | Year: 2012

During hot rolling Si-containing steels at Hoesch Hohenlimburg form red scale. Even pickling cannot remove the red scale and the resulting stripes can easily be detected and lead to impairments on the surface of the strip. Lab investigations at VDEh-Betriebsforschungsinstitut (BFI) showed that the atmosphere during the transportation of the slab from the descaler to the rolling stand has a significant influence on the red scale formation. A scale detection system detected scale blisters on the surface of the slabs in the hot rolling plant which form red scale during rolling.


Coil tracking is addressed as part of the production data acquisition in its various forms and analysis options. The timely assessment of broadband flat products represents an engineering challenge. This concerns especially the mapping of the process values to the produced meters at the respective sites where the band is subject to thermal or mechanical deformation. This article describes general considerations to get closer to the task, a proven solution and the different benefits for the users.


Nagel M.,Hoesch Hohenlimburg GmbH | Tomitz A.,Hoesch Hohenlimburg GmbH | Overrath J.,Hoesch Hohenlimburg GmbH
ThyssenKrupp techforum | Year: 2014

High-manganese steels (H-Mn) open up a completely new range of design options for weight-saving in automobile construction and armor plating for civilian use. Their outstanding formability and high energy absorption capacity are particularly in demand for crash-relevant components with high energy absorption requirements. These special properties also favor their use in innovative armor plating for civilian vehicles. The new austenitic high-manganese steel from Hoesch Hohenlimburg is characterized by tensile strengths of more than 800 MPa with uniform elongation of more than 40%.


Mechmann S.,Hoesch Hohenlimburg GmbH | Tonjes T.,3th Industriesoftware GmbH
MPT Metallurgical Plant and Technology International | Year: 2012

Hoesch Hohenlimburg implemented a warehouse management system in the coil store downstream of the two pickling lines in 2011. The system enables targeted storage and efficient use of the available storage space. It optimizes crane movements, avoids unnecessary shifting and the associated risk of damage and speeds up loading for shipment. The warehouse management system takes over as soon as a coil leaves one of the two pickling lines. Henceforth it controls the activities all the way down to the loading of the coils on trucks or trains. Therefore it has not only mapped the warehouse management in bay No. 6 but also the complete dispatch activities. The warehouse management system first determines which areas of the warehouse are generally suitable for a particular coil. After this preliminary selection, it checks each one of the available empty spaces in these areas for its general suitability as a storage location for that coil.


Gruss M.,Hoesch Hohenlimburg GmbH | Nagel M.,Hoesch Hohenlimburg GmbH | Hofel P.,Hoesch Hohenlimburg GmbH
ThyssenKrupp techforum | Year: 2012

Hoesch Hohenlimburg has developed the new HD (high ductility) product series with greatly improved properties for cold forming. Forming operations, in particular for complex components with high strength requirements, can be performed with even greater process reliability using the new development. The new material HSM 700 HD sets standards with yield strength of at least 700 MPa in combination with elongation of approximately 20%. These values are made possible by an innovative micro-alloying concept based on the use of niobium. Coupled with a precisely defined process routine for hot rolling and subsequent cooling, the scatter range of the mechanical properties can be greatly reduced. Provided a specific process routine is applied during production of the medium-wide strip, the number of niobium nano-precipitates can be increased step by step. The niobium dissolved in the material is automatically precipitated from the microstructure during the hot rolling of the material into medium-wide strip.


Rusing C.J.,University of Paderborn | Lambers H.-G.,Benteler Steel Tube GmbH | Lackmann J.,Benteler Automotive | Frehn A.,Benteler Automotive | And 4 more authors.
Materials Today: Proceedings | Year: 2015

The current work investigates the impact of pre-deformation temperatures on the microstructure evolution and the subsequent cyclic stress-strain response of high-manganese steel showing twinning-induced plasticity (TWIP) at room temperature (RT). Deformation at low temperatures increases the hardening rate at low to medium degrees of deformation through concurrent martensitic transformation. In contrast, high temperatures promote dislocation slip. Thus, employing pre-treatments at temperatures below and above RT leads to the evolution of considerably different microstructures. Low-cycle fatigue experiments revealed distinct differences for the pre-treated TWIP steels. © 2015 The Authors.


Weinzierl K.,Siemens AG | Loffler H.U.,Siemens AG | Rossiger M.,Siemens AG | Houben U.,Hoesch Hohenlimburg GmbH
AISTech - Iron and Steel Technology Conference Proceedings | Year: 2011

The concept described above provides an excellent basis for comprehensive microstructure rolling and cooling control so that material properties can be kept constant over the entire strip length. The integrated concept will be verified in a pilot project at Hoesch Hohenlimburg in 2011/2012. By relying on the excellent results of the already proven temperature and phase transformation model, model predictive control, Microstructure Target Cooling and Microstructure Monitor, we are sure that this new comprehensive control brings us another huge step forward towards the control of material properties over the entire hot rolling process.


Mechmann S.,Hoesch Hohenlimburg GmbH | Tonjes T.,3Tn Industriesoftware GmbH
Stahl und Eisen | Year: 2012

In 2011, Hoesch Hohenlimburg GmbH implemented a warehouse management system (WMS) in the coil store downstream of the two pickling lines. The WMS enables target-oriented storage and efficient use of the available storage space. The system optimizes crane movements, avoids unnecessary shifting - and the associated risk of damage - and speeds up loading for shipment. It creates transparency as it makes all information readily available and all activities intuitively comprehensible. Additionally, the system guarantees a high safety level.


Business processes without boundaries - At thyssenkrupp the Hoesch Hohenlimburg hot rolling mill has taken its process and digital networking far beyond its own company boundaries, providing for cross-business process, horizontal integration across entire value chains. Customers can decide when their precision steel is to be rolled at Hohenlimburg while Hoesch directly manages utilization of the continuous casting line at its starting material supplier's melt shop. The overarching business processes are based on the vertical integration of commercial, administrative and technical data - the foundation for Big Data.


Trademark
ThyssenKrupp and Hoesch Hohenlimburg GmbH | Date: 2014-10-20

Common metals and their alloys; steel; stainless steels and other non-rusting and acid resistant steels; rolled steel finished products made from the aforesaid metals, alloys and steels, in particular hot and cold rolled strips and sheets.

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