Societe Nationale D'etude Et De Construction De Moteurs D'aviation

Gerard Louis Zanolin

Jacques G Havard

Florent Camy

Michel R Jouardet

Jean-Yves M Loreau

Michel Robert Jouardet

Jacques Georges Havard

Jean-Yves Maurice Loreau

This invention concerns a containment box disposed around a welding head (1) and including a fixed frame carrying a fairing (16) modeled to the shape of the element (3) to be welded, a cover (9) sliding on the frame (10), and a bell with spherical boss (7) integral with the welding head (1) which slides and rotates in a vertical sleeve (8) traversing the cover (9). All the movements of the welding head (1) are therefore permitted which makes it possible to have complicated welding trajectories. Gaskets (15, 17) are provided.

Gas containment box used with a welding head

The process makes it possible to produce partitioned boxes by carrying out the fastening or fixture from the outside of said boxes. Use is made of two successive inclined laser beam shots or flashes (8A,8B), which intersect at the upper surface (1B) of the part (1) constituting the assembly head. The two laser welding axes (8A,8B) intersect two upper corners (2C) of the part (2) serving as the base of the T. The welding device is positioned outside the box, i.e. on the side of the upper surface (1B) of the head (1) of the T. Application to the manufacture of the arms of the outer duct of a turbojet engine.

Laser welding process for an assembly of two metal parts

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Oncy Sur Ecole, France

Gerard Louis Zanolin