Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New intensive-cooling unit allows production of high-strength steels in a wide range of thicknesses

11.11.2010
World´s first application of new cooling technology from Siemens at ThyssenKrupp hot-strip rolling mill

Siemens VAI Metals Technologies will install a new intensive-cooling unit in the Hot-Strip Mill 2 of ThyssenKrupp Steel AG in Duisburg-Beeckerwerth, Germany. The “Power Cooling” process will enable high- and highest-strength steels to be reliably cooled for a wide range of strip thicknesses. This will enable additional steel types to be efficiently produced with a high degree of precision. The intensive cooling unit is scheduled to commence operation in December 2010.


Example of a Siemens VAI cooling unit in a hot-strip rolling mill

The intensity of cooling and volume flow in the cooling section must be carefully regulated so that the desired microstructure of the rolled material is achieved with high precision. Contrary to laminar-flow strip-cooling processes, “Power Cooling” technology developed by Siemens VAI allows cooling rates as high as 400 K/s. In particular, the production of high- and highest-strength steels in the upper thickness range of up to one inch requires high cooling rates. Another special feature of the cooling section is the wide range within which the flow volume can be regulated. This enables the strip-cooling process to be precisely and flexibly controlled.

“Power Cooling” can achieve heat flow densities of up to 5 MW/m2 – three times higher than the rates achieved with laminar-flow cooling processes. The new cooling system also allows lower flow volumes to be set for a quasi-laminar cooling condition.

A newly developed cross-plant temperature model will also be utilized for the operation of this plant. This model applies a uniform calculation method for the entire finishing mill, through the cooling section and to the coiler. This enables a highly accurate prediction of the start of the phase transition, even if it takes place in the finishing mill. Furthermore, the calculation of the bainitic portions of the structure is also integrated within the model.

The cross-plant temperature model replaces the existing Siemens laminar-flow strip-cooling temperature model, which has been used in the Beeckerwerth Hot-Strip Mill 2 since 2007. It helps the phase transitions to be controlled even more precisely during the cooling of hot-rolled steel strip, thereby increases the flexibility of the rolling mill. Different types of steel can be produced in any sequence, and new types of steel can be added to the production without having to change the software or model parameters.

ThyssenKrupp Steel Europe AG is the leading company for the European carbon-steel activities of the ThyssenKrupp Group, one of the world's largest producers of quality flat-steel. The Hot Strip Mill 2 in Duisburg-Beeckerwerth rolls six million tons of steel per annum, which is one of the highest mill outputs in the world. A rolling modernization program enables ThyssenKrupp Steel Europe to produce a numerous types of modern, high-quality steels for use in the automotive industry and for pipe production.

Further information about solutions for steel works, rolling mills and processing lines can be found at: http://www.siemens.com/metals

The Siemens Industry Sector (Erlangen, Germany) is the worldwide leading supplier of environmentally friendly production, transportation, building and lighting technologies. With integrated automation technologies and comprehensive industry-specific solutions, Siemens increases the productivity, efficiency and flexibility of its customers in the fields of industry and infrastructure. The Sector consists of six divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility und Osram. With around 207,000 employees worldwide (September 30), Siemens Industry achieved in fiscal year 2009 total sales of approximately €35 billion. http://www.siemens.com/industry

The Siemens Industry Solutions Division (Erlangen, Germany) 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. A wide-ranging portfolio of environmental solutions helps industrial companies to use energy, water and equipment efficiently, reduce emissions and comply with environmental guidelines. With around 31,000 employees worldwide (September 30), Siemens Industry Solutions posted sales of €6.8 billion in fiscal year 2009.

Dr. Rainer Schulze | Siemens Industry
Further information:
http://www.siemens.com/industry-solutions
http://www.siemens.com/metals

More articles from Machine Engineering:

nachricht Flow probes from the 3D printer
25.05.2018 | Technische Universität München

nachricht Evaluating risk of hydrogen embrittlement: new simulation of cold cracks in high-strength steels
03.05.2018 | Fraunhofer-Institut für Werkstoffmechanik IWM

All articles from Machine Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>