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Content archived on 2024-04-15

HEAVY SECTION LASER WELDING

Objective


The main findings of this research are:

- Basic knowledge on the laser welding process for heavy sections, especially for:

- Optics performance with high power beams
- Process control and monitoring
- Energy coupling and balance
- Process modelling
- Environmental effects
- Laser welding with wire feeding.

- Thicker samples can be effectively welded using laser opposed runs, coupled to narrow gap chamfer filling.

- Preliminary qualification was performed on stainless steels up to 14 mm thick, welded via single pass laser welds without or with filler wire.
WELDING METAL SHEETS THICKER THAN 10 MM BY LASER SOURCES OF POWER EXCEEDING 10 KW IS A RESEARCH AREA OF MAXIMUM INTEREST FOR THE EUROPEAN COMMUNITY, DUE TO THE LARGE EFFECTS THIS TECHNOLOGY CAN PRODUCE IN SEVERAL INDUSTRIAL SECTORS.
THIS PROGRAMME, JOINING THE EUROPEAN LABS EQUIPPED WITH THE LASERS OF HIGHEST POWER, HAS AS GOALS TO DETERMINE THE POTENTIAL OF LASER TECHNOLOGY IN WELDING HEAVY SECTIONS, TO GAIN INSIGHT IN THE COMPLEX INTERACTION OF THE HIGH POWER LASER BEAM WITH THE MATERIALS AND TO OPTIMIZE THE WORKING CONDITIONS IN ORDER TO OFFER THE EUROPEAN INDUSTRIES THE CHANCE TO WIDELY EXPLOIT THE ADVANTAGES OF LASER IN PRODUCTION.

THEREFORE, THIS RESEARCH WILL INCLUDE A FIRST ANALYSIS OF THE BEAM TRANSPORT AND FOCUSSING OPTICS, AND A DEEP ANALYSIS OF THE PHENOMENA OF INTERACTION OF THE BEAM WITH METALLIC MATERIALS, AS WELL AS THEIR MODELLING. THUS, CONTROL DEVICES FOR SHIELDING GAS WILL BE TESTED AND IMPROVED IN ORDER TO OPTIMIZE THE PROCESS, WHILE DIFFERENT BEAM SHAPING SYSTEMS AND TECHNIQUES FOR DEEP WELDING BY NARROW GAP WILL BE DEVELOPED IN ORDER TO INCREASE THE MAXIMUM WELDING THICKNESS.

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Call for proposal

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Funding Scheme

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CSC - Cost-sharing contracts

Coordinator

Istituto per le Ricerche di Tecnologia Meccanica e per l'Automazione SpA
EU contribution
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Total cost

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Participants (8)

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