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:
Michael Botts | idw
COMPAMED 2016 connected medical devices and people
23.11.2016 | IVAM Fachverband für Mikrotechnik
Successfully transferring Industrie 4.0 into reality
21.11.2016 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
05.12.2016 | Power and Electrical Engineering
05.12.2016 | Information Technology
05.12.2016 | Earth Sciences