Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Siemens introduces new quick-exchange pinch-roll cassette for hot-strip mill downcoilers

08.11.2011
Roll-change time reduced from eight hours to just ten minutes

Siemens VAI Metals Technologies now offers hot-strip mill operators a new method for changing the pinch rolls in downcoilers. The pinch-roll unit, designed as a quick-exchange cassette, can be replaced within just ten minutes without additional interruption of production. That saves up to eight hours typically required when applying conventional solutions.


The new pinch-roll quick-exchange unit from Siemens VAI reduces roll-replacement times from up to eight hours down to just ten minutes

This capability to quickly exchange rolls reduces maintenance time, increases yield, and makes it easier to switch from one steel grade to another. Hot-strip producers can thus respond more quickly to changing market demands. Strip can also be coiled at a consistently high quality for longer periods of time. The rolls can be cleaned and refurbished offline, thereby enhancing both strip quality and personnel safety.

During the coiling of hot strip, deposits forming on the pinch rolls have to be removed at frequent intervals in order to prevent damage to the roll surface, which can impair strip quality. The pinch rolls also have to be refurbished at regular intervals, depending on the steel grade rolled and the length of time that the pinch rolls have been in use. Up until now, pinch rolls were manually cleaned inline during ongoing operations, posing a high safety risk for maintenance personnel. A complete roll change required up to eight hours, and this was usually done during scheduled maintenance shutdown periods.

The new pinch-roll quick-exchange unit from Siemens VAI can be replaced within ten minutes. The change is carried out automatically, and cleaning no longer has to be done during ongoing operations. This eliminates a potentially dangerous task for rolling mill personnel. The short time required to replace rolls now allows an exchange to be synchronized with specific operational requirements, such as a change in the grade of steel to be rolled or the specific strip quality requirements. This facilitates a more flexible response to changing market requirements. All in all, the output of the rolling mill can be increased and the surface quality of the strip improves.

Additionally, very little time is lost as a result of unscheduled interruptions caused by damaged pinch rolls.

The capability to change the pinch rolls quickly also enables the cleaning and refurbishing intervals to be ideally timed to optimize the roll-surface condition and length of service life. An optional surface testing system supports the operator to achieve this.

The new pinch-roll quick-exchange unit from Siemens VAI reduces roll-replacement times from up to eight hours down to just ten minutes

The Siemens Industry Sector (Erlangen, Germany) is the world’s leading supplier of innovative and environmentally friendly products and solutions for industrial customers. With end-to-end automation technology and industrial software, solid vertical-market expertise, and technology-based services, the Sector enhances its customers’ productivity, efficiency, and flexibility. With a global workforce of more than 100,000 employees, the Industry Sector comprises the Divisions Industry Automation, Drive Technologies and Customer Services as well as the Business Unit Metals Technologies. For more information, visit www.siemens.com/industry

The Metals Technologies Business Unit (Linz, Austria), part of the Siemens Industry Sector, is one of the world’s leading suppliers of plant construction and engineering in the iron and steel industry as well as in the flat rolling segment of the aluminum industry. The Business Unit offers a comprehensive product and service portfolio for metallurgical plants and equipment as well as integrated automation and environmental solutions covering the entire lifecycle of plants. For more information, visit www.siemens.com/metals

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

More articles from Machine Engineering:

nachricht More functionalities: Microstructuring large surfaces with a UV-laser system
05.07.2018 | Fraunhofer-Institut für Lasertechnik ILT

nachricht A factory to go
04.07.2018 | Fraunhofer Institute for Manufacturing Engineering and Automation IPA

All articles from Machine Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

The Maturation Pattern of the Hippocampus Drives Human Memory Deve

23.07.2018 | Science Education

FAU researchers identify Parkinson's disease as a possible autoimmune disease

23.07.2018 | Health and Medicine

O2 stable hydrogenases for applications

23.07.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>