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  1. Laser technology improves gas metal-arc welding

    Hannover, Germany – At the upcoming EuroBlech (October 26 - 30 in Hannover), 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 percent. Also, oscillating and contoured welding seams and complicated welding shapes can profit from this new process.   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 molding tools or injection molding tools or for large tools used in mining or tunnel building.   "We've already reached a 100 percent increase in speed for metal active gas welding (MAG)," says Jörg Hermsdorf, engineer at 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 leads to long down times."   The "FÜLAS" project (welding) is supported by the German Federal Ministry of Education and Research and the Project Management Agency Karlsruhe. The project "PROGENIAL" (deposition welding) is supported by the BMBF under project management of the Association of German Engineers. For more information, contact Michael Botts at m.botts@lzh.de

    Online Articles

    Online Articles

    Fri, 15 Oct 2010

  2. Hybrid laser arc welding : Has its time arrived?

    Obstacles remain, but the "hybrid age" is coming, due especially to high brightness lasers

    Magazine Articles

    Magazine Articles

    Sat, 1 Jan 2011

  3. Sheet metal laser welding helps job shops compete globally

    When joining sheet metal, job shops have yet to fully embrace more of the benefits laser technology affords.

    Magazine Articles

    Magazine Articles

    Fri, 15 Jul 2016

  4. Banding together improvises new product

    Many companies become complacent in the "old way" of doing things and have little interest in introducing new approaches and ideas.

    Magazine Articles

    Magazine Articles

    Fri, 1 Mar 2013

  1. Laser development at Volvo

    Magazine Articles

    Magazine Articles

    Fri, 1 Mar 2013

  2. The slow industrial acceptance of laser cladding

    Laser cladding appears to require a dedication to the specialty to make it successful

    Magazine Articles

    Magazine Articles

    Sat, 1 Jun 2002

  3. Laser die repair

    Before industrial lasers, cladding tool steel was an art. Now, laser die repair is fast and economical

    Magazine Articles

    Magazine Articles

    Tue, 1 Oct 2002

  4. Laser welding in commercial furniture manufacturing

    Over the past few years, the aesthetic appeal of display furniture design for retail stores has increased exponentially as a consequence of visual merchandising strategies.

    Magazine Articles

    Magazine Articles

    Mon, 27 Jan 2014

  5. Laser seam stepper takes on conventional welding

    The Laser Seam Stepper (LSS) combines the advantages of resistance spot welding and conventional laser welding.

    Magazine Articles

    Magazine Articles

    Tue, 14 Jul 2015

  6. Laser cleaning prior to laser welding of aluminum alloys

    Laser welding of aluminum alloys often results in significant amount of porosity, thus very low joint strengths.

    Magazine Articles

    Magazine Articles

    Mon, 11 May 2015

  7. Laser welding machine for coil end welding on thin strip available

    The LHMA laser welder utilizes a fiber laser to deliver the necessary energy for welding via a fiber-optic cable connected to a focusing head.

    Online Articles

    Online Articles

    Wed, 1 Apr 2015

  8. Magnets improve quality of high-power laser beam welding

    Welding is one of the most critical operations for the construction of reliable metal structures in everything from ships to reactor vessels.

    Magazine Articles

    Magazine Articles

    Tue, 17 Mar 2015

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