Abrégé

A rotor for use in an aircraft engine, that has been repaired by (a) welding together a first portion of a damaged blade of the rotor and a second portion of metal to form a weld nugget, (b) compressively stressing the weld nugget throughout its volume, and (c) heat treating the compressively stressed weld nugget to recrystallize metal therein.

Classes IPC  ?

• B23K 26/21 - Assemblage par soudage
• F01D 5/00 - AubesOrganes de support des aubesDispositifs de chauffage, de protection contre l'échauffement, de refroidissement, ou dispositifs contre les vibrations, portés par les aubes ou les organes de support
• B23K 15/00 - Soudage ou découpage par faisceau d'électrons
• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• F02K 9/52 - Injecteurs
• F02K 9/58 - Soupapes d'alimentation en combustible
• F02K 9/62 - Chambres de combustion ou de poussée
• B23P 6/00 - Remise en état ou réparation des objets
• B23K 26/20 - Assemblage
• F01D 5/14 - Forme ou structure
• B23K 101/00 - Objets fabriqués par brasage, soudage ou découpage

Abrégé

A method for joining first and second metal portions includes welding together the portions such that a weld nugget joins them, compressively stressing the weld nugget throughout its volume, and heat treating the compressively stressed weld nugget to recrystallize metal therein. A method for strengthening a metal element includes imparting compressive stress within a region of the metal element, and heat treating it such that metal of the region recrystallizes with a finer grain structure than was present in the region before the step of imparting the compressive stress. A repaired metal part includes a first, original section made of metal alloy, and a second, repair section of metal alloy joined to the original section by a recrystallized metal weld having crystals within +/−3 ASTM-112 grain sizes of the size of the crystals of the original and repair sections.

Classes IPC  ?

• F01D 5/00 - AubesOrganes de support des aubesDispositifs de chauffage, de protection contre l'échauffement, de refroidissement, ou dispositifs contre les vibrations, portés par les aubes ou les organes de support
• B23K 15/00 - Soudage ou découpage par faisceau d'électrons
• F02K 9/52 - Injecteurs
• F02K 9/58 - Soupapes d'alimentation en combustible
• F02K 9/62 - Chambres de combustion ou de poussée
• B23K 26/20 - Assemblage
• F01D 5/14 - Forme ou structure
• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• B23K 26/21 - Assemblage par soudage
• B23K 101/00 - Objets fabriqués par brasage, soudage ou découpage

Abrégé

A method for joining first and second metal portions includes welding together the portions such that a weld nugget joins them, compressively stressing the weld nugget throughout its volume, and heat treating the compressively stressed weld nugget to recrystallize metal therein. A method for strengthening a metal element includes imparting compressive stress within a region of the metal element, and heat treating it such that metal of the region recrystallizes with a finer grain structure than was present in the region before the step of imparting the compressive stress. A repaired metal part includes a first, original section made of metal alloy, and a second, repair section of metal alloy joined to the original section by a recrystallized metal weld having crystals within +/- 3 ASTM-112 grain sizes of the size of the crystals of the original and repair sections.

Classes IPC  ?

• B23K 5/12 - Soudage au chalumeau tenant compte des propriétés des matériaux à souder
• C21D 1/18 - DurcissementTrempe avec ou sans revenu ultérieur