Metal working – Method of mechanical manufacture – Impeller making
Patent
1997-12-18
1999-09-28
Cuda, Irene
Metal working
Method of mechanical manufacture
Impeller making
2940207, 2940218, B23P 1500
Patent
active
059568453
ABSTRACT:
A method of forming an engine airfoil part. The attributes of a final workpiece product are selected. An appropriate substrate composition is determined depending on the selected attributes. A workpiece substrate is formed to near-finished dimensions. An appropriate coating material composition is determined depending on the selected attributes. The workpiece substrate is prepared for a high-density coating process. The high-density coating process, such as HVOF thermal spray, is performed to coat the workpiece substrate with the coating material. The coating material is built-up to a thickness effective to obtain desired finished dimensions after performing a hot isostatic pressing treatment. The appropriate hot isostatic pressing treatment parameters are determined. The hot isostatic pressing treatment is performed on the coated workpiece substrate to obtain a metal product having the desired finished dimensions and diffusion bonding between the coating material and the workpiece substrate.
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Cuda Irene
Daniels John J.
Recast Airfoil Group
LandOfFree
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