Superalloy Knife Edge Seal Repair.

Kutchera, R. E.; Bailey, P. G.

Superalloy Knife Edge Seal Repair.

Active / Technical Report | Accession Number: ADA057269 |

Open PDF

Abstract:

A twenty month effort has successfully demonstrated the feasibility of the Continuous Seam Diffusion Bonding CSDB process for repairing knife edge seal teeth on superalloy engine components. Seal teeth rings from the F101, Rene 95, Compressor Rotor Spool CRS, stages 4-9, containing five representative seal teeth clusters were used for this investigation. The Rene 95 seal teeth were repaired with Inconel 718 tip extension material. The developed processes were utilized to repair two seal teeth rings machined from the CRS. Isothermal rolling was used successfully to initially widen the seal teeth bond interface to facilitate notch-free diffusion bonds after reprofiling. CSDB parameters were established for bonding the Inconel 718 to the Rene 95 seal teeth. A closure technique was developed to complete the circumferential bonding of a seal teeth ring.

Author(s):

Kutchera, R. E. ; Bailey, P. G.

Author Organization(s):

GENERAL ELECTRIC CO CINCINNATI OHIO MATERIAL AND PROCESS TECHNOLOGY LABS

Descriptive Note:

Final rept. 1 Mar 76-31 Nov 77,

Pagination:

0116

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

AFML-TR-78-56, GIDEP-E143-0248

Contract/Grant Number(s):

F33615-76-C-5123

Project Number(s):

7351

Monitor Series:

TR-78-56, E143-0248

Subject Terms

Joint Capability Areas:

JCA_4.3_Maintain; JCA_5_Command and Control; JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_5.6_Monitor; JCA_5.3_Planning; JCA_6_Net Centric; JCA_5.6.1_Assess Compliance with Guidance; JCA_5.6.3_Assess Achievement of Objectives; JCA_6.1.2_Wireless Transmission

Modernization Areas:

Fully Networked C3

Communities of Interest:

Air Platforms

Descriptor(s):

*SEALS(STOPPERS), *SUPERALLOYS, *COMPRESSOR ROTORS, FIGHTER AIRCRAFT, EDGES, DIFFUSION BONDING, REPAIR, NICKEL ALLOYS, KNIVES, RINGS, CONTINUOUS PROCESSING, ROLLING(METALLURGY), TEETH, ULTRASONIC RADIATION, SEAM WELDING

Field(s)/Group(s):

Adhesives, Seals and Binders, Metallurgy and Metallography, Jet and Gas Turbine Engines

Keyword(s):

F 101 aircraft, Nickel alloy rene 95, Nickel alloy inconel 718, PE62102F

Report Date:

1978 May 01