Superalloy Knife Edge Seal Repair.

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.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1978
Accession Number
ADA057269

Entities

People

  • P. G. Bailey
  • R. E. Kutchera

Organizations

  • General Electric

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Assembly
  • Compressor Rotors
  • Cost Estimates
  • Diffusion Bonding
  • Engine Components
  • Fabrication
  • Failure Mode And Effect Analysis
  • Heat Treatment
  • Manufacturing
  • Materials
  • Materials Laboratories
  • Mechanical Working
  • Shear Properties
  • Tensile Strength
  • Test And Evaluation
  • Thermal Fatigue

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).