Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New high-speed welding technology

27.08.2003



Australian scientists have produced a new high-speed welding technology that slashes hours from traditional joining of corrosion-resistant metals.

The Keyhole Welding process has been developed jointly by the Cooperative Research Centre for Welded Structures and CSIRO Elaborately Transformed Metals at Woodville in Adelaide, South Australia.

CSIRO’s Dr Ted Summerville says, ’This is a breakthrough, high-quality solution to the limited penetration of conventional TIG welding’.



’The new process combines high welding currents and novel torch design to give a process that can punch through 12 mm plate with ease.’

Dr Summerville says, ’A keyhole is formed in the molten metal produced by the arc, and this keyhole then anchors to both the front and root faces of the plate, rendering it very stable’.

’This, and the fact that the arc gases can now pass cleanly through the material, make the process highly reproducible and very robust.

’A feature of Keyhole Welding is the square edge plate preparation, which minimises joint preparation and filler material consumption.’

Another key feature is its ability to complete joints in a single pass. ’This reduction in number of weld passes lowers the risks of weld contamination, and can significantly increase productivity, especially when the materials are thicker than about 5 mm’, says Dr Summerville.

’These are major bonuses when welding corrosion-resistant metals such as stainless steel and titanium.

’This new process can be used for welding all types of stainless steel, C-Mn steel and titanium alloys’, Dr Summerville says. ’Single pass welding speeds vary with the thickness being welded, for example 12 mm plate is typically welded at 300 mm per minute, 8 mm plate at 500 mm per minute and 3 mm plate at 1000 mm per minute.’

’Welding stainless steel and titanium, which previously took hours, can now be automated and completed in minutes.’

Keyhole Welding is easily implemented as the process uses a conventional GTAW power supply capable of delivering 500-1000 amps.

Licenses for Keyhole Welding technology are being offered in Australia, Europe and the USA for use in the manufacture of products ranging from spiral-welded pipe to railway rolling stock.

A number of licensees in these markets have reported significant productivity improvements.

Dr Summerville will be in Europe shortly to demonstrate the technology, particularly through welding industry associations.

For further Information Contact:

Ken Anderson, +61 3 9545 2052, 0414 457 214
Manager Marketing Communications CSIRO Manufacturing & Infrastructure Technology
Email: Ken.Anderson@csiro.au
Website: www.cmit.csiro.au

Dr Colin Chipperfield, +61- 2-4252-8889
Chief Executive Officer
Cooperative Research Centre for Welded Structures
Email: cchipper@uow.edu.au
Website: http://www.crcws.com.au

Rosie Schmedding | CSIRO
Further information:
http://www.csiro.au/index.asp?type=mediaRelease&id=Prkeyhole
http://www.cmit.csiro.au
http://www.crcws.com.au

More articles from Process Engineering:

nachricht Innovative process for environmentally friendly manure treatment comes onto the market
03.05.2018 | Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB

nachricht No compromises: Combining the benefits of 3D printing and casting
23.03.2018 | Fraunhofer-Institut für Produktionstechnik und Automatisierung IPA

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>