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Integrated Weld Automation for Gas Turbine Blades PUBLIC ACCESS

[+] Author Affiliations
P. Lowden, C. Pilcher, J. Liburdi

Liburdi Engineering Limited, Hamilton, ON, Canada

Paper No. 91-GT-159, pp. V005T12A008; 7 pages
doi:10.1115/91-GT-159
From:
  • ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General
  • Orlando, Florida, USA, June 3–6, 1991
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7902-3
  • Copyright © 1991 by ASME

abstract

The automation of turbine blade welding provides both metallurgical benefits and production advantages. Heat-affected zone cracking in sensitive superalloys, such as IN738 and IN100, can be eliminated or greatly reduced by optimizing process control, and higher production yields can be achieved when welding jet engine blades.

However, the successful implementation of automated processes requires careful consideration and engineering of the technology package. In particular, the equipment packager must be experienced in the technology associated with turbine blade welding and incorporate appropriate tooling, measurement system, power source and robotic controls. An example of a welding system for high pressure blade tips is presented which required the development and integration of a novel vision system to measure the thickness of the squealer wall, in order to select the appropriate welding parameters. Several practical applications of the technology are demonstrated on turbine blades exhibiting typical dimensional and metallurgical variations.

Copyright © 1991 by ASME
Topics: Gas turbines , Blades
This article is only available in the PDF format.

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