Method of fabricating a steam turbine deflector

摘要

The invention relates to a method for manufacturing a steam turbine low-pressure or medium-pressure module deflector, said deflector comprising an internal ring and an external ring as well as vanes, said method comprising a step of welding said vanes to said rings. The main characteristic of a method according to the invention is that the welding step is preceded by a step of automatically machining the ends of each vane to create a peripheral recess around each of said ends.

主权项

1. A method of fabricating a deflector of a low-pressure or medium pressure module of a steam turbine, said deflector including an internal ring, an external ring and vanes, said method comprising:
automatic machining of ends of each vane in order to produce a peripheral recess around each of said ends, wherein the peripheral recess around each of said ends is machined to create a groove located between the peripheral recess and the corresponding internal or external ring, each groove being able to accommodate a weld bead; and depositing the weld bead in each groove to weld each of said ends of the respective vane to the corresponding internal or external ring.