Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Repair and Wear Protection for Large Tools Becomes More Efficient

30.11.2009
The goal of a new research project at the Laser Zentrum Hannover e.V. (LZH) is to significantly reduce the effort and cost for repairs and wear protection of large-sized tools.

A new innovative deposition welding process is being developed, which can stabilize inexpensive yet imprecise gas metal arc welding (GMAW) by using laser radiation. This new process also makes the welding much faster. This development is especially interesting for forming and injection molding tools, or for tools used in mining and tunnel construction.

"The laser radiation generates a path with an increased conductivity directly in the arc," says Alexander Borroi, engineer at the LZH. "The laser determines the location and amount of the deposited metals, and you can weld more precisely and faster than with gas metal arc welding alone."

On the one hand, the combination of a GMAW- device with a diode laser of high average output ensures that operating costs are kept relatively low. On the other hand, the preciseness of the new process ensures a significant reduction of post processing. Further cost savings result from the form of the surface material. Instead of powder, wire is applied, which makes the entire powder recycling unit redundant.

"The development of a mobile system is especially interesting", adds Barroi. "This makes direct on site repairs possible, and accordingly long downtimes resulting from demounting and transporting large tools is no longer necessary."

The new deposition welding process is not only suited for repairs, but also for protection of tool edges and surfaces from abrasion and corrosion. Further fields of application, for example the construction of complex components via deposition welding, should also be opened.

The project "Progenial" is carried out in cooperation with the ERLAS Erlanger Lasertechnik GmbH and the MERKLE Schweißanlagentechnik GmbH. Progenial runs until the end of August 2011 and is sponsored by the German Federal Ministry of Education and Research (BMBF) within the framework of the funding program Optical Technologies. Project management is carried out by the VDI-Technologiezentrum GmbH.

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
http://www.lzh.de/en/publications/press_releases

More articles from Process Engineering:

nachricht New technology for ultra-smooth polymer films
28.06.2018 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP

nachricht Diamond watch components
18.06.2018 | Schweizerischer Nationalfonds SNF

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: It’s All in the Mix: Jülich Researchers are Developing Fast-Charging Solid-State Batteries

There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.

The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...

Im Focus: Color effects from transparent 3D-printed nanostructures

New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference

Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

LaserForum 2018 deals with 3D production of components

17.08.2018 | Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

 
Latest News

Quantum bugs, meet your new swatter

20.08.2018 | Information Technology

A novel synthetic antibody enables conditional “protein knockdown” in vertebrates

20.08.2018 | Life Sciences

Metamolds: Molding a mold

20.08.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>