Patent · US Active

Method for repairing a single crystal turbine blade

US9488053B2 · kind B2 · utility

2Cited by

6References

20Claims

0Family size

Assignee

GENERAL ELECTRIC TECHNOLOGY GMBH · CH

Inventors

Tobias Schmitt · Olten, CH
Hans Bissig · Wohlen, CH
Stefan Schlegel · Langenthal, CH
Guenter Ambrosy · Stuttgart, DE
Michael Seemann · Laufenbürg, DE
Hermann Emminger · Aarau, CH

Key dates

Filing date	Jan 7, 2015
Grant date	Nov 8, 2016
Priority date	—
Expiry date	Jan 18, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49233
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method is provided for repairing a single crystal turbine blade, which includes an airfoil with a tip having a tip cover plate, tip cooling air holes and a tip crown. The method includes removing the tip crown by manual grinding, thereby preserving the underlying tip cover plate; preparing the tip cooling air holes by manual grinding; closing said prepared tip cooling air holes by manual welding; and building-up a new tip crown by a LMF (Laser Metal Forming) process.

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