Construction of part of metal pieces by the process mig wire with current and pulse

The present invention relates to a method of constructing at least one width portion L of a metal part of a turbomachine. It is characterized by the fact that said filler metal built by portion with a MIG welding apparatus comprising a pulsating current generator and a yarn speed pulse input which is varied with said current and said flow, the construction being effected in the form of cords (10) of metal in several successive layers.