Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Deburring EXPO: Finishing sheet edges and functional surfaces with the laser

12.09.2019

At Deburring EXPO, the leading trade fair for deburring technology and precision surfaces in Karlsruhe, the Fraunhofer Institute for Laser Technology ILT will be presenting current developments in the field of laser deburring and polishing from October 8 to 10, 2019. The focus is on laser polishing for tribologically stressed surfaces, sealing surfaces and laser deburring of sheet edges.

The topics of deburring and polishing are becoming increasingly important in metalworking. Laser-based deburring and polishing processes are particularly advantageous for functional surfaces and demanding deburring tasks.


Partially laser-rounded sheet edges made of stainless steel (sheet thickness 1.5 mm).

© Fraunhofer ILT, Aachen, Germany


Focus on functionalization: Fraunhofer ILT will be demonstrating its expertise in the fields of laser deburring and polishing at Deburring EXPO in Karlsruhe.

© Fraunhofer ILT, Aachen, Germany

Rounding off cut edges and polishing surfaces

Laser deburring of sheet metal parts is one of the techniques Fraunhofer ILT will be demonstrating in Karlsruhe. Continuous wave lasers are the preferred choice for this application thanks to their ability to remove burrs and sharp edges quickly and reliably – in some cases at a rate of several meters a minute – and to mold the part into the required shape by means of remelting. Users can harness this melting process to create a defined shape, for example by rounding off the part smoothly and evenly.

Laser polishing techniques for metal surfaces make use of both continuous wave and pulsed lasers. Pulsed lasers with pulse durations of a few hundred nanoseconds and a remelt depth of several micrometers are a popular choice for machining ground surfaces with low roughness, for example. In contrast, continuous lasers capable of achieving remelt depths of up to 100 micrometers are a good choice for rougher surfaces, such as those formed by milling or erosion machining.

For metal surfaces, polishing rates of 1 to 60 s/cm² are achieved. The exact figure depends on the application and laser power in each case. “We’re already seeing some interesting applications in the automotive and mechanical engineering sectors as well as in precision mechanics and medical devices,” says Dr. Edgar Willenborg, manager of the Laser Polishing group at Fraunhofer ILT.

“Laser polishing is particularly suitable for surfaces exposed to high tribological stress, as well as for sealing surfaces and, in some cases, for areas that are difficult to access using conventional methods.”

Another advantage of this method is that it can be used with many different materials, including various types of steel and some cast alloys as well as nickel, titanium and cobalt-chrome alloys and even pure titanium.

Increasing interest in laser polishing

Laser polishing is still relatively rare in industrial manufacturing. Nevertheless, the first applications are already implemented and have proven to be both cost-effective and technically viable. At Fraunhofer ILT, a dedicated research group consisting of seven scientists is working intensively on this still young topic. Though modest in size, its leader Dr. Edgar Willenborg believes this may be the world’s biggest research group focused specifically on laser polishing.

Laser polishing for 3D parts

Lasers can even be used to process complex, three-dimensional parts. Working in collaboration with a special-purpose machine maker, Fraunhofer ILT has developed a machine technology the Aachen-based scientists use to continue developing and testing laser polishing for new applications. “The technology has lived up to its promise on a laboratory scale, and now we’re close to seeing the first industrial applications,” says Willenborg. “Laser polishing primarily caters to medium levels of quality – for example to achieve technical functionalization with a high degree of automation.” When it comes to mirror-like, high-gloss surface finishes, he adds, laser polishing is not generally such a good choice.

Dr. Willenborg reports that high demand for new polishing techniques has boosted interest in laser polishing across the board, noting that this method also offers the advantage of being easy to integrate in existing production lines for smaller parts.

Fraunhofer ILT at Deburring EXPO 2019

Further details on laser deburring and polishing will be presented by Dr. Willenborg and his team from October 8 to 10 in Karlsruhe at the Fraunhofer ILT booth 319 in Hall 1 of the Deburring EXPO Research Pavilion.

Wissenschaftliche Ansprechpartner:

Dr.-Ing. Edgar Willenborg
Group Manager Polishing
Telephone +49 241 8906-213
edgar.willenborg@ilt.fraunhofer.de

Dipl.-Phys. Judith Kumstel
Group Polishing
Telephone +49 241 8906-8026
judith.kumstel@ilt.fraunhofer.de

Weitere Informationen:

https://www.ilt.fraunhofer.de/en.html

Petra Nolis M.A. | Fraunhofer-Institut für Lasertechnik ILT

More articles from Trade Fair News:

nachricht Fraunhofer FHR to Showcase Non-contact, Non-destructive Quality Control of Plastic Products at the K 2019
17.10.2019 | Fraunhofer-Institut für Hochfrequenzphysik und Radartechnik FHR

nachricht IVAM product market at the COMPAMED 2019: No digitalization in medical technology without microtechnologies
11.10.2019 | IVAM Fachverband für Mikrotechnik

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: Solving the mystery of quantum light in thin layers

A very special kind of light is emitted by tungsten diselenide layers. The reason for this has been unclear. Now an explanation has been found at TU Wien (Vienna)

It is an exotic phenomenon that nobody was able to explain for years: when energy is supplied to a thin layer of the material tungsten diselenide, it begins to...

Im Focus: An ultrafast glimpse of the photochemistry of the atmosphere

Researchers at Ludwig-Maximilians-Universitaet (LMU) in Munich have explored the initial consequences of the interaction of light with molecules on the surface of nanoscopic aerosols.

The nanocosmos is constantly in motion. All natural processes are ultimately determined by the interplay between radiation and matter. Light strikes particles...

Im Focus: Shaping nanoparticles for improved quantum information technology

Particles that are mere nanometers in size are at the forefront of scientific research today. They come in many different shapes: rods, spheres, cubes, vesicles, S-shaped worms and even donut-like rings. What makes them worthy of scientific study is that, being so tiny, they exhibit quantum mechanical properties not possible with larger objects.

Researchers at the Center for Nanoscale Materials (CNM), a U.S. Department of Energy (DOE) Office of Science User Facility located at DOE's Argonne National...

Im Focus: Novel Material for Shipbuilding

A new research project at the TH Mittelhessen focusses on the development of a novel light weight design concept for leisure boats and yachts. Professor Stephan Marzi from the THM Institute of Mechanics and Materials collaborates with Krake Catamarane, which is a shipyard located in Apolda, Thuringia.

The project is set up in an international cooperation with Professor Anders Biel from Karlstad University in Sweden and the Swedish company Lamera from...

Im Focus: Controlling superconducting regions within an exotic metal

Superconductivity has fascinated scientists for many years since it offers the potential to revolutionize current technologies. Materials only become superconductors - meaning that electrons can travel in them with no resistance - at very low temperatures. These days, this unique zero resistance superconductivity is commonly found in a number of technologies, such as magnetic resonance imaging (MRI).

Future technologies, however, will harness the total synchrony of electronic behavior in superconductors - a property called the phase. There is currently a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

International Symposium on Functional Materials for Electrolysis, Fuel Cells and Metal-Air Batteries

02.10.2019 | Event News

NEXUS 2020: Relationships Between Architecture and Mathematics

02.10.2019 | Event News

Optical Technologies: International Symposium „Future Optics“ in Hannover

19.09.2019 | Event News

 
Latest News

Energy Flow in the Nano Range

18.10.2019 | Power and Electrical Engineering

MR-compatible Ultrasound System for the Therapeutic Application of Ultrasound

18.10.2019 | Medical Engineering

Double layer of graphene helps to control spin currents

18.10.2019 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>