Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Siemens starts up ultra-thick slab caster at Posco – Production of highest quality slabs for demanding downstream applications

01.04.2011
A two-strand ultra-thick slab caster capable of casting slabs in thicknesses up to 400 mm was started up in March by Siemens VAI at Posco's Pohang Works in Korea. The caster is equipped with numerous technological packages to ensure the reliable and consistent production of highest quality slabs for sophisticated product applications in, for example, the oil and shipbuilding industries.

In November 2007, Posco Pohang Iron & Steel Company Ltd. (Posco) placed an order for the supply of a two-strand ultra-thick, slab caster capable of casting up to 1.3 million tons of a wide range of carbon steel grades per year. The caster, designed with a metallurgical length of 24 m, was erected in the Continuous Casting Plant No. 3 (CCP3) in the Pohang Works.

Following the start-up of the caster in the two-strand casting mode, all equipment and systems functioned as designed beginning with the first heat. Slabs are cast with a thickness of either 250 mm or 400 mm, and at widths from 1,100 mm to 2,200 mm. The caster features a wide range of technological packages in the Siemens VAI product portfolio for slab casters. This includes DynaFlex for the flexible adjustment of the mold-oscillation parameters, LevCon mold-level control, DynaWidth slab-width adjustment and Smart Segments for fast slab-thickness changes.

The combination of Dynacs 3D, 3D Sprays and I-Star Revolver rollers offers a maximum in secondary cooling flexibility as the basis for achieving highest slab surface quality. Dynacs 3D calculates the temperature at any point within the strand in real time, allowing the optimum secondary-cooling setpoints to be defined. Dynamically adjustable 3D Sprays prevent overcooling of the slab corners for all slab widths. The application of I-Star Revolver rollers, which do not require spray-water cooling, supports a more gradual and uniform cooling of the slab surface. This minimizes the tendency of surface defects when casting crack-sensitive steel grades or ultra-thick slabs.

The particularly high internal quality of the slabs is ensured by the unique machine concept. A 3.6 m long vertical section at the top of the strand-guide system promotes the floating of undesired impurities present in the liquid steel. Thanks to the application of DynaGap SoftReduction, the final strand-solidification position can be precisely determined. This allows the roller-gap taper in the area of final strand solidification to be dynamically and precisely adjusted, which minimizes strand segregation as required for high-end products. The Connect & Cast capability of the installed technological packages not only shortened the installation and assembly period, but also accelerated the production ramp-up to nominal capacity.

The described slab caster is the only ultra-thick slab caster in Korea. This start-up follows the commissioning of the 400 mm ultra-thick slab caster in June 2010 at Qinhuangdao Shouqin Metal Material Co., Ltd. in Qinhuangdao City, Hebei Province, China.

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

Dynacs, Smart, DynaGap Soft Reduction and Connect & Cast are registered trademarks of Siemens AG and/or one of its subsidiaries.

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 and Osram. With around 204,000 employees worldwide (September 30), Siemens Industry achieved in fiscal year 2010 total sales of approximately €34.9 billion. 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 29,000 employees worldwide (September 30), Siemens Industry Solutions posted sales of €6.0 billion in fiscal year 2010. www.siemens.com/industry-solutions

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

More articles from Machine Engineering:

nachricht Satellite-based Laser Measurement Technology against Climate Change
17.01.2017 | Fraunhofer-Institut für Lasertechnik ILT

nachricht LZH optimizes laser-based CFRP reworking for the aircraft industry
24.11.2016 | Laser Zentrum Hannover e.V.

All articles from Machine Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>