Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Automated joining of complex glass parts

02.05.2014

Up to now, automated manufacturing of complex glass parts is limited.

Scientists of the Glass Group at the Laser Zentrum Hannover e.V. (LZH) have therefore developed a process for the laser-based joining of borosilicate and quartz glass. In order to achieve a constant quality of the parts, the surface temperature is controlled without contact during the process, and thus, the glass viscosity for joining is reduced in a pre-defined way.


Laser-based joining of glass parts using powder filler material.

Photo: LZH


Quartz glass: L angle after the welding process.

Photo: LZH

Powder filler material is used for bridging the gap. The results of the project show that the new process setup is very well suited for automated manufacturing. The research work was supported by the German Federal Ministry of Economics and Technology.

Complex glass parts are, in most cases, manufactured manually by a glass apparatus maker using a gas flame. Since the process cannot be entirely controlled, the quality fluctuates. In order to be able to automate the production of complex parts, e.g. for chemical apparatus engineering, LZH scientists have developed a laser-based process for joining glass parts made of borosilicate and quartz glass.

The special feature of the process is an integrated temperature control that regulates the viscosity of the parts in a pre-defined way during the welding process: Here, a CO2 laser beam source provides the required amount of heat energy. The temperature is measured without contact using a pyrometer.

In order bridge gaps at, for example, L angle geometries, glass powder is added as filler material during the joining process. In doing so, the glass powder is melted and forms a homogeneous welding seam with a constant bead height. The new process setup enables automated joining of glass in various welding configurations, such as butt joints, fillet joints and L angles.

The „Research Association Technique and Glass“ (FTG e.V.) submitted the application for the research project titled “laser-based joining of glass parts using powder filler material” (powder joining). The commitment and know-how of the FTG members significantly contributed to the success of the project.

The IGF project no. 17029 N „laser-based joining of glass parts using powder filler material“ of the „Research Association Tech-nique and Glass“ (FTG e.V., Bronnbach 28, 97877 Wertheim, Germany) was supported by the German Federation of Industrial Research Associations (AiF e.V.) within the scope of the Industrial Collective Research Programme (IGF) of the German Federal Ministry of Economics and Technology on the basis of a decision by the German Bundestag.

The complete project report is available upon request to presse@lzh.de.

Lena Bennefeld | Laser Zentrum Hannover e.V.
Further information:
http://www.lzh.de

Further reports about: CO2 Economics IGF LZH Laser borosilicate glass powder powder filler material quartz glass temperature

More articles from Materials Sciences:

nachricht Combining the elements palladium and ruthenium for industry
22.09.2016 | National Institute for Materials Science

nachricht Defects at the spinterface disrupt transmission
21.09.2016 | Eberhard Karls Universität Tübingen

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: OLED microdisplays in data glasses for improved human-machine interaction

The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has been developing various applications for OLED microdisplays based on organic semiconductors. By integrating the capabilities of an image sensor directly into the microdisplay, eye movements can be recorded by the smart glasses and utilized for guidance and control functions, as one example. The new design will be debuted at Augmented World Expo Europe (AWE) in Berlin at Booth B25, October 18th – 19th.

“Augmented-reality” and “wearables” have become terms we encounter almost daily. Both can make daily life a little simpler and provide valuable assistance for...

Im Focus: Artificial Intelligence Helps in the Discovery of New Materials

With the help of artificial intelligence, chemists from the University of Basel in Switzerland have computed the characteristics of about two million crystals made up of four chemical elements. The researchers were able to identify 90 previously unknown thermodynamically stable crystals that can be regarded as new materials. They report on their findings in the scientific journal Physical Review Letters.

Elpasolite is a glassy, transparent, shiny and soft mineral with a cubic crystal structure. First discovered in El Paso County (Colorado, USA), it can also be...

Im Focus: Complex hardmetal tools out of the 3D printer

For the first time, Fraunhofer IKTS shows additively manufactured hardmetal tools at WorldPM 2016 in Hamburg. Mechanical, chemical as well as a high heat resistance and extreme hardness are required from tools that are used in mechanical and automotive engineering or in plastics and building materials industry. Researchers at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS in Dresden managed the production of complex hardmetal tools via 3D printing in a quality that are in no way inferior to conventionally produced high-performance tools.

Fraunhofer IKTS counts decades of proven expertise in the development of hardmetals. To date, reliable cutting, drilling, pressing and stamping tools made of...

Im Focus: Launch of New Industry Working Group for Process Control in Laser Material Processing

At AKL’16, the International Laser Technology Congress held in May this year, interest in the topic of process control was greater than expected. Appropriately, the event was also used to launch the Industry Working Group for Process Control in Laser Material Processing. The group provides a forum for representatives from industry and research to initiate pre-competitive projects and discuss issues such as standards, potential cost savings and feasibility.

In the age of industry 4.0, laser technology is firmly established within manufacturing. A wide variety of laser techniques – from USP ablation and additive...

Im Focus: New laser joining technologies at ‘K 2016’ trade fair

Every three years, the plastics industry gathers at K, the international trade fair for plastics and rubber in Düsseldorf. The Fraunhofer Institute for Laser Technology ILT will also be attending again and presenting many innovative technologies, such as for joining plastics and metals using ultrashort pulse lasers. From October 19 to 26, you can find the Fraunhofer ILT at the joint Fraunhofer booth SC01 in Hall 7.

K is the world’s largest trade fair for the plastics and rubber industry. As in previous years, the organizers are expecting 3,000 exhibitors and more than...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Experts from industry and academia discuss the future mobile telecommunications standard 5G

23.09.2016 | Event News

ICPE in Graz for the seventh time

20.09.2016 | Event News

Using mathematical models to understand our brain

16.09.2016 | Event News

 
Latest News

Chains of nanogold – forged with atomic precision

23.09.2016 | Life Sciences

New leukemia treatment offers hope

23.09.2016 | Health and Medicine

Self-assembled nanostructures hit their target

23.09.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>