Centre National De La Recherche Scientifique

Université De Nantes

Snecma

Universite Paris Sud (ups)

Université Paris—sud

Blue Solutions

Ecole Polytechnique De L'universite De Nantes

Pascal Paillard

Thierry Baudin

Jean-Baptiste Mottin

Olivier Caumont

Jean-François Castagne

Donald Schleich

Alexandre Benoit

Alexandre Yann Michel Benoit

Alexandre Yann Benoit

Jean-Francois Castagne

Guy Saindrenan

Method of assembling a first thin copper part and a second thin aluminum part, each to be welded using heterogeneous welding, includes placing the ends of the parts so that they face one another and pressing the ends against one another so as to constitute a welding zone extending therebetween; and applying an aluminum alloy by way of filler metal to the welding zone using a low energy welding method in which the electric arc and the meltable filler wire are wider than the combined thickness of the parts, the parts being held so as to maintain the welding zone at the top using a fixing element including at least two rigid blocks of a conductive material whose thickness is between 1 and 2 mm, whose length is greater than that of the parts and whose width is sufficient to hold the parts, and a pressure fixing system.

Aluminium/copper heterogeneous welding

A method for hard surface deposition on aluminum metal parts of a turbine engine using MIG welding equipment which includes a pulsed current generator and pulsed filler metal wire feed, wherein the deposition is achieved using a filler metal wire whose composition is of the same nature as the composition of the aluminum alloy of the part to undergo hard surface deposition, with the pulsed metal wire feed and speed of deposition on the metal part of the turbine engine being adapted to carry out deposition without hot fissuring.

Method for welding and for hard surface deposition of metal parts made of aluminium by a MIG method with pulsed current and filler wire

Growing community of inventors

Ligne, France

Pascal Paillard