Forming gas turbine transition duct bodies without...

Details Forming gas turbine transition duct bodies without... Forming gas turbine transition duct bodies without...

2006-05-23

2006-05-23

Jimenez, Marc (Department: 3726)

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

C029S890140, C072S056000

Reexamination Certificate

active

07047615

ABSTRACT:
A method of making combustion turbine transition duct bodies without longitudinal welds by hydroforming two duct bodies back to back with bellows thrusters secured to the duct body open ends. This enables the manufacturing of duct bodies with detailed features and high pressure without using compression cylinders. Multi-layer transition duct bodies can also be assembled with layers of different materials, for example, having a heat-resistant layer inside and high strength layer outside. They can be assembled using cold shrinking and heat expanding. In addition, anti-fretting and anti-vibration coatings can be applied between the layers for improved performance.

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