Cost Effective Repair Techniques for Turbine Airfoils. Volume I
Abstract
A program was conducted to establish cost effective repair procedures for conventionally cast turbine airfoils. Components selected for repair were the TF39 first and second stage turbine vanes and the TF39 first stage turbine blade as determined by a Phase I survey of ALC centers. Processes investigated include Activated Diffusion Healing (ADH) of turbine vanes and Activated Diffusion Bonding (ADB) of turbine blades by the mini-bond process. TF39 Stage 1 HPT vanes and TF39 Stage 2 HPT vanes were successfully processed through ADH repair by the Manufacturing Technology Laboratory (MTL), shipped to the General Electric Aviation Service Shop in Cincinnati for final processing and inspection, and are ready for Phase 3 engine testing. Pilot line processing of Stage 1 HPT blades provided an unsatisfactory yield due to a need for process control improvements. Action was taken to revise the Stage 1 HPT blade program to include use of MTL's new and improved minibonder and to try furnace ADB for additional attempts at bonding squealer tips and end caps to blade airfoils to obtain higher yields.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1978
- Accession Number
- ADB034420
Entities
People
- J. A. Wein
- W. R. Young
Organizations
- General Electric