Hyblas, economical and safe laser hybrid welding of structural steel
The Hyblas project has developed the techniques of laser hybrid welding to the level that single pass welds can be made up to 25 mm plate thickness using 20 kW of laser power at speeds of about 1 m/min. Multi-pass and dual-sided welding techniques have also been developed up to 30 mm plate thickness and fillet welds up to 20 mm steel thickness. The weldability of steels from 250 to 690 MPa yield strength from 12 to 25 mm in thickness has been quantified and operational windows for defect-free welding defined. In addition, various NDE methods have been studied for their efficiency in regard to the defect types which can occur. The fracture and mechanical properties of the joints have been shown to be perfectly good for all structural uses and an extensive fatigue testing programme has demonstrated fatigue behaviour which exceeds conventional welding expectations. Part of a full-scale industrial component has been manufactured, inspected and tested to demonstrate that the anticipated fatigue benefits are obtained, and they were. Finally, guidance regarding good practice for the industrial use of the techniques has been derived and publicised with a view to generating an agreed standard.
Bibliographic Reference: EUR 23867 EN (2009), 118 pp. Euro: 20
Availability: http://bookshop.europa.eu/is-bin/INTERSHOP.enfinity/WFS/EU-Bookshop-Site/en_GB/-/EUR/ViewPublication-Start?PublicationKey=KINA23867 (Catalogue Number: KI-NA-23867-EN-S)
ISBN: ISBN: 978-92-79-11554-7
Record Number: 200910522 / Last updated on: 2009-12-21
Original language: en
Available languages: en