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DanStir ApS - Danish stir welding technology

By: Dr Torben Lorentzen (DanStir ApS)

Dr Torben Lorentzen
DanStir ApS
Park Allé 345, P.O. Box 124
DK-2605 Brøndby, Denmark
Tel No : +45 4326 7035
Fax No : +45 4326 7040
E-mail :  WeldIt@DanStir.com
Website: www.danstir.com

DanStir ApS; the first Danish friction stir welding company

DanStir ApS was established in August 2000 as the first Danish industrial company specialising in friction stir welding. DanStir provide large-scale job-shop opportunities to industries in Denmark and abroad. DanStir also engages in R&D activities offering its expertise in tool and process technology development as well as prototype welding and full-scale series production. DanStir engages in business partnerships on turnkey projects taking part in establishing, implementing and maintaining friction stir welding capability locally at its business partners.

DanStir was formed by Senior Scientist Dr T Lorentzen of Risø National Laboratory in Denmark. As a Senior Scientist he was the prime proposer initiating the first dedicated EU-project on friction stir welding - JOIN-DMC; 'Joining Dissimilar Materials and Composites using Friction Stir Welding'. Dr. Lorentzen was also the Risø representative in formulating and initiating the second dedicated EU-project on friction stir welding - WAFS; 'Welding of Airframes using Friction Stir'. Following the success of initiating these EU-funded projects, DanStir was formed in August 2000.

DanStir's new building at the premises of the FORCE Institute

Fig.1. DanStir's new building at the premises of the FORCE Institute © 2001, DanStir

DanStir's SuperStir friction stir welding machine

Fig.2. DanStir's SuperStirTM friction stir welding machine under preparation at ESAB AB in Laxå, Sweden © 2001, DanStir

DanStir is a highly R&D-oriented industry investing heavily in research to maintain its position at the forefront of the friction stir welding technology. Apart from the network established through the EU-projects, DanStir entered in 2000 as a co-sponsor in the TWI co-ordinated Group Sponsored Project; GSP-12030 on 'Transport Structures'. Through this project DanStir collaborate with major industries in the aeronautic, transport and aluminium manufacturing industry, and from the project findings DanStir has access to the most modern tool technology available for light metal alloys.

DanStir's contribution to the EuroStir® project

DanStir's engagement in the EuroStir® project focuses on further developing the process technology for Stainless Steel, Magnesium and Titanium. In collaborating with the partners on these matters, DanStir makes available its newly established friction stir welding plant in Copenhagen. With its newly commissioned ESAB SuperStirTM facility, DanStir offers EuroStir® collaborators a unique opportunity to further explore the friction stir welding process technology. With a capacity to handle large samples, large thickness and large volume production, DanStir provides the opportunity to proceed directly from EuroStir® R&D activities and industrialisation studies to pilot and full-scale series production.

FSW related services available at DanStir

DanStir makes available its newly commissioned friction stir welding facility located in Brøndby near Copenhagen. The facility is a large-scale gantry machine manufactured by ESAB AB of Laxå, Sweden. The facility is of a design identical to the newly commissioned SuperStirTM-machine at TWI, with a gantry capable of down forces in excess of 10 metric ton. The DanStir facility has a welding envelope of 3 x 15 meters making it among the two or three largest available world wide for R&D and job-shop opportunities. The facility has a fixed welding table of 3 x 5 meters with a maximum daylight under the weld head of more than 900 millimetres. Over the remaining 10 meters of the welding envelope dedicated weld tables and fixtures may be installed allowing i.e. applications of rotary tables with horizontal or vertical rotation axes, and allowing the daylight under the head to be increased to more than 1700 millimetres.

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