Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

EuroBlech 2010: Laser Technology Improves Gas Metal-Arc Welding

29.09.2010
Laser technology can be used to improve gas metal-arc welding. If a low power laser beam precedes the arc, the arc follows it, and is stabilized.

Thus, not only the welding seam quality is improved, but the welding speed can also be increased up to 100 per cent faster. This process is presently being tested for gas metal-arc deposition welding.

At the EuroBlech fair (October 26th-30th in Hannover), the Laser Zentrum Hannover e.V. (LZH) will show how laser technology can be used to improve gas metal-arc welding. Conventional gas metal-arc welding is inexpensive, but difficult to control. Since the arc naturally follows the path of least resistance between the electrode and the weld metal, the position of the weld cannot be exactly determined, which can have a negative effect on the welding results. If a low power laser beam precedes the arc, the arc follows it, and is stabilized. Thus, not only the welding seam quality is improved, but the welding speed can also be significantly increased.

This new process has already been subject to tests for conventional, high-strength and higher-strength steels, as well as for aluminium materials. At the same welding depth, the welding speed could be increased by up to 100 per cent. Also, oscillating and contoured welding seams, and complicated welding shapes can profit from this new process.

Presently, this process principle is also being tested for deposition welding. By using the so-called "laser-guided gas metal-arc deposition welding", the efforts and costs for the repair and wear protection of large sized tools can be significantly reduced. This is especially interesting for moulding tools or injection moulding tools, or for large tools used in mining or tunnel building.

"We've already reached a 100 per cent increase in speed for metal active gas welding (MAG)," says Jörg Hermsdorf, engineer at the LZH. "We hope to achieve similar results for deposition welding. A mobile system for deposition welding could be especially interesting, since repairs could then be done on site. This would eliminate the tools having to be removed or transported, which in turn lead to long down times."

This and other innovative uses of laser technology, as well as our laser experts can be found at the EuroBlech fair in Hannover, in Hall 12, Stand H 25.

The "FÜLAS" project (welding) is supported by the German Federal Ministry of Education and Research (BMBF) and the Project Management Agency Karlsruhe. The project "PROGENIAL" (deposition welding) are supported by the BMBF, under project management of the Association of German Engineers.

Contact:
Laser Zentrum Hannover e.V.
Michael Botts
Hollerithallee 8
D-30419 Hannover
Germany
Tel.: +49 511 2788-151
Fax: +49 511 2788-100
E-Mail: m.botts@lzh.de
The Laser Zentrum Hannover e.V. (LZH) carries out research and development in the field of laser technology and is supported by the Ministry of Economic Affairs, Labour and Transport of the State of Lower Saxony (Niedersächsisches Ministerium für Wirtschaft, Arbeit und Verkehr).

Michael Botts | idw
Further information:
http://www.lzh.de

More articles from Trade Fair News:

nachricht High Resolution Laser Structuring of Thin Films at LOPEC 2017
21.03.2017 | Fraunhofer-Institut für Lasertechnik ILT

nachricht Open ecosystem for smart assistance systems
20.03.2017 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

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

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Argon is not the 'dope' for metallic hydrogen

24.03.2017 | Materials Sciences

Astronomers find unexpected, dust-obscured star formation in distant galaxy

24.03.2017 | Physics and Astronomy

Gravitational wave kicks monster black hole out of galactic core

24.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>