Method of repairing metallic components

US6626350B2 · kind B2 · utility

Assignee

• MTU Aero Engines AG · DE

Inventor

• Reinhold Meier · Dorfen, DE

Key dates

• Filing date: Jun 25, 2001
• Grant date: Sep 30, 2003
• Expiry date: Jun 25, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49732
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method is available for repairing metallic components such as gas turbines, which have mechanically weight-carrying grooves, where the longitudinal edges of the grooves which exist on the component surface are largely in a plane and their actual contour deviates, at least locally, due to removal and/or displacement the component material from the desired contour. The method begins with abrasive blasting of the groove surfaces, followed by closing of the open groove ends by build-up welding, and subsequent filling of the grooves with soldering powder. The soldering powder is heated to liquefaction, then cooled and solidified in a vacuum, and the desired contour of the groove is then machined.