Abstract: A method of retouching metal parts joined by brazing at high temperatures is disclosed. The brazed zones are retouched by a retouching laser. The peak power of the retouching laser is between 1500 and 3000 W. The retouching laser is used in pulsed mode.

Abstract: A method for welding two metal parts, in which: the metal parts are positioned against each other in a welding position, the parts being respectively in surface contact along their welding surfaces, at least one of the parts having at least one extra-thick zone along its welding surface; TIG welding is carried out on the welding surfaces (v) of the metal parts by means of a TIG welding torch, a method in which a penetrating welding flux is applied locally on said extra-thick zone of the metal part prior to the TIG welding step.

Abstract: The invention concerns a method of recuperating a turbine element constituted of a substrate, forming the body of the element, and a protective coating adhering to the substrate. The method comprises the control of the turbine element in order to pinpoint the zones having a bonding defect between the protective coating and the substrate, and the elimination of the bonding defects between the protective coating and the substrate. The bonding defects are eliminated by means of a laser beam directed onto each zone having a bonding defect in order to induce a localized melting of the protective coating and the underlying substrate and enable a sound bond, at the level of said zone, between the protective coating and the substrate after stopping the laser beam.

Abstract: The invention relates to a method of retouching metal parts joined by brazing at high temperatures, wherein the brazed zones are retouched by means of a retouching laser, the peak power of the retouching laser being between 1500 and 3000 W, the retouching laser being used in pulsed mode.

Abstract: The invention concerns a method of recuperating a turbine element constituted of a substrate, forming the body of the element, and a protective coating adhering to the substrate. The method comprises the control of the turbine element in order to pinpoint the zones having a bonding defect between the protective coating and the substrate, and the elimination of the bonding defects between the protective coating and the substrate. The bonding defects are eliminated by means of a laser beam directed onto each zone having a bonding defect in order to induce a localised melting of the protective coating and the underlying substrate and enable a sound bond, at the level of said zone, between the protective coating and the substrate after stopping the laser beam.

Abstract: A method for welding two metal parts, in which: the metal parts are positioned against each other in a welding position, the parts being respectively in surface contact along their welding surfaces, at least one of the parts having at least one extra-thick zone along its welding surface; TIG welding is carried out on the welding surfaces (v) of the metal parts by means of a TIG welding torch, a method in which a penetrating welding flux is applied locally on said extra-thick zone of the metal part prior to the TIG welding step.