PROCESS FOR PRODUCING A STATOR DIAPHRAGM IN A STEAM TURBINE AND STATOR DIAPHRAGM THUS PRODUCED.

摘要

TITLE: PROCESS FOR PRODUCING A STATOR DIAPHRAGM IN A STEAM TURBINE AND STATOR DIAPHRAGM THUS PRODUCED. A process for producing a stator diaphragm in a steam turbine or gas expander is disclosed. The process includes a preparation phase of two rings machined separately to obtain radial cavities having the profile of blades of a stator stage of the steam turbine or gas expander and for inserting respective ends of the stator blades into cavities in the two rings. An adhesive linen finish tape is applied to the external and internal diameters of the rings. A quantity of brazing material in paste-like form is injected into the cavities taking care to control the injection pressure so that the paste-like brazing material is caused to ascend as far as the limit of the corners of the edge of the slot facign the steam or gas flow channel. The rings are then subjected to a furnace brazing operation in vacuo.