Patent · US Expired

Process for repairing damaged blades of turboengines

US5479704A · kind A · utility

31Cited by

9References

20Claims

0Family size

Assignee

MTU Motoren-und Turbinen-Union MÃƒÂ¼nchen GmbH · DE

Inventors

Karl-Hermann Richter · Markt Indersdorf, DE
Reinhold Meier · Dorfen, DE
Thilo Schmitt · Vöcklabruck, AT
Bernd Stimper · Dachau, DE

Key dates

Filing date	Aug 5, 1994
Grant date	Jan 2, 1996
Priority date	—
Expiry date	Aug 5, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49336
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A repair process for blades of turboengines damaged in the head or edge regions in which the damaged regions are first separated to leave an undamaged blade stump with an exposed, repair surface. The repair surface of the blade stump is prepared for butt welding and a repair plate of constant thickness which exceeds the maximum profile height of the blade by more than 50% is provided with a front surface adapted to the repair surface. This front surface of the repair plate is abutted against the repair surface and the blade stump and the repair blade are then butt welded. The weld joint and the repair plate are machined to the profile contour of the blade stump and to the desired blade profile. This process is used for the repair of blades of integral rotor disks of turboengines, particularly for blades of integral compressor impellers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.